Merge pull request #9 from ralphlange/devel/add-releases-cache-setups

- closes #5, closes #7
2019-12-11 15:01:42 +01:00
parent 9b346c400a 82d962639b
commit eff3d31687
48 changed files with 2198 additions and 228 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 *.orig
 *.log
 .*.swp
+*.autosave
--- a/.travis.yml
+++ b/.travis.yml
@@ -0,0 +1,178 @@
+# .travis.yml for testing EPICS Base ci-scripts
+# (see: https://github.com/epics-base/ci-scripts)
+
+# Note:
+# Paths to scripts are different in this test configuration
+# (your module has one more directory level: .ci)
+
+language: cpp
+compiler: gcc
+dist: xenial
+
+cache:
+  directories:
+  - $HOME/.cache
+
+env:
+  global:
+    - SETUP_PATH=.:.ci
+
+addons:
+  apt:
+    packages:
+    - libreadline6-dev
+    - libncurses5-dev
+    - perl
+    - clang
+    - g++-mingw-w64-i686
+    - g++-mingw-w64-x86-64
+    - qemu-system-x86
+
+install:
+  - ./travis/prepare.sh
+
+script:
+  - ./travis-test.sh
+
+# If you need to do more during install and build,
+# add a local directory to your module and do e.g.
+#  - ./.ci-local/travis/install-extras.sh
+
+# Define build jobs
+
+# Well-known variables to use
+# SET      source setup file
+# EXTRA    content will be added to make command line
+# STATIC   set to YES for static build (default: NO)
+# TEST     set to NO to skip running the tests (default: YES)
+# VV       set to make build scripts verbose (default: unset)
+
+# Usually from setup files, but may be specified or overridden
+#  on a job line
+# MODULES  list of dependency modules
+# BASE     branch or release tag name of the EPICS Base to use
+# <MODULE> branch or release tag for a specific module
+# ...      see README for setup file syntax description
+
+jobs:
+  include:
+
+# Run unit tests on Linux and Mac
+
+  - env: SET=test00
+
+  - env: SET=test00
+    os: osx
+
+# Compile the example application
+# using the build configurations from full makeBaseApp example
+
+  - env: SET=test01
+
+  - env: SET=test01
+    compiler: clang
+
+  - env: VV="" SET=test01
+
+  - env: SET=test01 EXTRA="CMD_CXXFLAGS=-std=c++11"
+
+  - env: SET=test01 EXTRA="CMD_CXXFLAGS=-std=c++11"
+    compiler: clang
+
+# trusty is pretty close to RHEL7
+  - env: SET=test01
+    dist: trusty
+
+  - env: SET=test01 EXTRA="CMD_CXXFLAGS=-std=c++11"
+    dist: trusty
+
+# Cross-compilation to Windows using MinGW and WINE
+
+  - env: SET=test01 WINE=32 TEST=NO STATIC=YES
+    compiler: mingw
+
+  - env: SET=test01 WINE=64 TEST=NO STATIC=YES
+    compiler: mingw
+
+# dynamic (DLL) builds are broken on xenial
+  - env: SET=test01 WINE=32 TEST=NO STATIC=NO
+    dist: bionic
+    compiler: mingw
+
+  - env: SET=test01 WINE=64 TEST=NO STATIC=NO
+    dist: bionic
+    compiler: mingw
+
+# Cross-compilation to RTEMS
+# (needs EPICS Base >= 3.16.2)
+
+  - env: SET=test01 RTEMS=4.10 TEST=NO
+
+  - env: SET=test01 RTEMS=4.9 TEST=NO
+
+# Other gcc versions (adding as an extra package)
+
+  - env: SET=test01
+    compiler: gcc-6
+    addons: { apt: { packages: ["g++-6"], sources: ["ubuntu-toolchain-r-test"] } }
+
+  - env: SET=test01
+    compiler: gcc-7
+    addons: { apt: { packages: ["g++-7"], sources: ["ubuntu-toolchain-r-test"] } }
+
+# MacOS build
+
+# SNCSEQ 2.2.7 fails to build on MacOS; currently needs master
+  - env: SET=test01 SNCSEQ=master
+    os: osx
+    compiler: clang
+    addons: { homebrew: { packages: ["re2c"], update: true } }
+
+# Base 3.15 builds
+# ================
+
+  - env: BASE=R3.15.7 SET=test01
+
+  - env: BASE=R3.15.7 SET=test01 WINE=64 TEST=NO STATIC=YES
+    dist: bionic
+    compiler: mingw
+
+# The DLL build for this Base version is known to fail
+#  - env: BASE=R3.15.7 SET=test01 WINE=64 TEST=NO STATIC=NO
+#    dist: bionic
+#    compiler: mingw
+
+# Cross-compilation to RTEMS
+# (needs EPICS Base >= 3.16.2)
+
+  - env: BASE=R3.16.2 SET=test01 RTEMS=4.10 TEST=NO
+    dist: trusty
+
+  - env: BASE=R3.16.2 SET=test01 RTEMS=4.9 TEST=NO
+    dist: trusty
+
+# SNCSEQ 2.2.7 fails to build on MacOS; currently needs master
+  - env: BASE=R3.15.7 SET=test01 SNCSEQ=master
+    os: osx
+    compiler: clang
+    addons: { homebrew: { packages: ["re2c"], update: true } }
+
+# Base 3.14 builds
+# ================
+
+  - env: BASE=R3.14.12.8 SET=test01
+
+  - env: BASE=R3.14.12.8 SET=test01 WINE=64 TEST=NO STATIC=YES
+    dist: bionic
+    compiler: mingw
+
+# The DLL build for this Base version is known to fail
+#  - env: BASE=R3.14.12.8 SET=test01 WINE=64 TEST=NO STATIC=NO
+#    dist: bionic
+#    compiler: mingw
+
+# SNCSEQ 2.2.7 fails to build on MacOS; currently needs master
+  - env: BASE=R3.14.12.8 SET=test01 SNCSEQ=master
+    os: osx
+    compiler: clang
+    addons: { homebrew: { packages: ["re2c"], update: true } }
--- a/31
+++ b/31
@@ -0,0 +1,31 @@
+# Makefile at top of application tree
+TOP = .
+include $(TOP)/configure/CONFIG
+
+# Directories to build, any order
+DIRS += configure
+DIRS += $(wildcard *Sup)
+DIRS += $(wildcard *App)
+DIRS += $(wildcard *Top)
+DIRS += $(wildcard iocBoot)
+
+# The build order is controlled by these dependency rules:
+
+# All dirs except configure depend on configure
+$(foreach dir, $(filter-out configure, $(DIRS)), \
+    $(eval $(dir)_DEPEND_DIRS += configure))
+
+# Any *App dirs depend on all *Sup dirs
+$(foreach dir, $(filter %App, $(DIRS)), \
+    $(eval $(dir)_DEPEND_DIRS += $(filter %Sup, $(DIRS))))
+
+# Any *Top dirs depend on all *Sup and *App dirs
+$(foreach dir, $(filter %Top, $(DIRS)), \
+    $(eval $(dir)_DEPEND_DIRS += $(filter %Sup %App, $(DIRS))))
+
+# iocBoot depends on all *App dirs
+iocBoot_DEPEND_DIRS += $(filter %App,$(DIRS))
+
+# Add any additional dependency rules here:
+
+include $(TOP)/configure/RULES_TOP
--- a/README.md
+++ b/README.md
@@ -1,62 +1,198 @@
 # Continuous Integration Scripts for EPICS Modules

-The scripts in this repository are intended to provide a common,
+The scripts inside this repository are intended to provide a common,
 easy-to-use and flexible way to add Continuous Integration to EPICS
-software modules, e.g. Device Support modules.
+software modules, e.g. Device or Driver Support modules.

-By including this repository as a Git Submodule, your module will
-always use an explicit commit, i.e. a fixed version of the scripts.
-That ensures that further development of these scripts cannot break
-your setup.
+By including this repository as a Git Submodule, you will be able to
+use the same flexible, powerful CI setup that EPICS Bases uses,
+including a mechanism to specify sets of dependent modules
+(with versions) that you want to compile your module against.

-## Travis-CI
+By using the submodule mechnism, your module will always use an
+explicit commit, i.e. a fixed version of the scripts.
+This ensures that any further development of the ci-scripts will
+never break existing use.

-### Features
+## This Repository

- -  Compile against different branches or releases of EPICS Base
- -  Use different versions of compilers (gcc, clang)
- -  Cross-compile for Windows 32bit and 64bit using MinGW and WINE
- -  Cross-compile for RTEMS 4.9 and 4.10
- -  Compile on MacOS
+In addition to the scripts themselves (in the subdirectories),
+this repository contains the test suite that is used to verify
+functionality and features of the ci-scripts.
+
+You are welcome to use the test suite as a reference, but keep in
+mind that in your module the path to the scripts has one level more
+(e.g., `./travis/abc` here would be `./.ci/travis/abc` in your
+module).
+Also, a test suite might not show the same level of quality as an
+example.
+
+## Features
+
+ - Compile against different branches or releases of EPICS Base and
+   additional dependencies (modules like asyn, std, etc.).
+
+ - Define settings files that declare sets of dependencies
+   with their versions and locations.
+
+ - Define hook scripts for any dependency.
+   Hooks are run on the dependency module before it is compiled, so
+   the module can be patched or further configured.
+
+ - Define static or shared builds (executables, libraries).
+
+ - Run tests (using the EPICS unit test suite).
+
+## Supported CI Services
+
+### Travis-CI
+ - Use different compilers (gcc, clang)
+ - Use different gcc versions
+ - Cross-compile for Windows 32bit and 64bit using MinGW and WINE
+ - Cross-compile for RTEMS 4.9 and 4.10 (Base >= 3.16.2)
+ - Compile on MacOS
+ - Built dependencies are cached (for faster builds)
 
-### How to Use these Scripts
+### How to Use the CI-Scripts

- 1. Get an account on [Travis-CI](https://travis-ci.org/), connect
-    it to your GitHub account and activate your support module's
-    repository. For more details, please refer to the
-    [Travis-CI Tutorial](https://docs.travis-ci.com/user/tutorial/).
-    Make sure to use `travis-ci.org` and not their `.com` site.
+ 1. Get an account on a supported CI service provider platform.
+    (e.g. [Travis-CI](https://travis-ci.org/),
+    Appveyor, Azure Pipelines...)

- 1. In your Support Module, add this respository as a Git Submodule
-    (name suggestion: `.ci`).
+    (More details in the specific README of the subdirectory.)
+
+ 2. In your Support Module, add this ci-scripts respository
+    as a Git Submodule (name suggestion: `.ci`).
    ```
    $ git submodule add https://github.com/epics-base/ci-scripts .ci
    ```
-	
- 1. Create a Travis configuration by copying one of the examples.
-    ```
-    $ cp .ci/.travis.yml.example-full .travis.yml
-    ```
-	
- 1. Edit the `.travis.yml` configuration to include the jobs you want
-    Travis to run.
-	
- 1. Push your changes and check 
-    [travis-ci.org](https://travis-ci.org/) for your build results.
+ 3. Create setup files for different sets of dependencies you
+    want to compile against. (See below.)

-## Releases and Numbering
+    E.g., a setup file `stable.set` specifying
+    ```
+    MODULES=sncseq asyn
+
+    BASE=R3.15.6
+    ASYN=R4-34
+    SNCSEQ=R2-2-7
+    ```
+    will compile against the EPICS Base release 3.15.6, the Sequencer
+    release 2.2.7 and release 4.34 of asyn.
+    (Any settings can be overridden from `.travis.yml`.)
+
+ 4. Create a configuration for the CI service by copying one of
+    the examples provided in the service specific subdirectory
+    and editing it to include the jobs you want the service to run.
+    Use your setup by defining e.g. `SET=stable` in the environment of
+    a job.
+
+ 5. Push your changes and check the CI service for your build results.
+
+## Setup Files
+
+Your module might depend on EPICS Base and a few other support modules.
+(E.g., a specific driver might need StreamDevice, ASYN and the Sequencer.)
+In that case, building against every possible combination of released
+versions of those dependencies is not possible:
+Base (37) x StreamDevice (50) x ASYN (40) x Sequencer (51) would produce
+more than 3.7 million different combinations, i.e. build jobs.
+
+A more reasonable approach is to create a few setups, each being a
+combination of dependency releases, that do a few scans of the available
+"version space". One for the oldest versions you want to support, one or two
+for stable versions that many of your users have in production, one for the
+latest released versions and one for the development branches.
+
+## Setup File Syntax
+
+Setup files are loaded by the bash scripts. They are found by searching
+the locations in `SETUP_PATH` (space or colon separated list of directories,
+relative to your module's root directory).
+
+Setup files can include other setup files by calling `include <setup>`
+(omitting the `.set` extension of the setup file). The configured
+`SETUP_PATH` is searched for the include.
+
+Any `VAR=value` setting of a variable is only executed if `VAR` is unset or
+empty. That way any settings can be overridden by settings in `.travis.yml`.
+
+Empty lines or lines starting with `#` are ignored.
+
+`MODULES="<list of names>"` should list the dependencies (software modules)
+by using their well-known slugs, separated by spaces.
+EPICS Base (slug: `base`) will always be a dependency and will be added and
+compiled first. The other dependencies are added and compiled in the order
+they are defined in `MODULES`.
+
+`REPOOWNER=<name>` sets the default GitHub owner (or organization) for all
+dependency modules. Useful if you want to compile against a complete set
+of dependencies forked into your private GitHub area.
+
+For any module mentioned as `foo` in the `MODULES` setting (and for `BASE`),
+the following settings can be configured:
+
+`FOO=<version>` Set version of the module that should be used. Must either
+be a *tag* name (in that case the module is checked out into Travis' cache
+system) or a *branch* name (in that case the module is always checked out
+and recompiled as part of the job). [default: `master`]
+
+`FOO_REPONAME=<name>` Set the name of the remote repository as `<name>.git`.
+[default is the slug in lower case: `foo`]
+
+`FOO_REPOOWNER=<name>` Set the name of the GitHub owner (or organization)
+that the module repository can be found under.
+
+`FOO_REPOURL="<url>"` Set the complete URL of the remote repository.
+
+The default URL for the repository is pointing to GitHub, under
+`$FOO_REPOOWNER` else `$REPOOWNER` else `epics-modules`,
+using `$FOO_REPONAME` else `foo` and the extension`.git`.
+
+`FOO_DEPTH=<number>` Set the depth of the git clone operation. Use 0 for a
+full clone. [default: 5]
+
+`FOO_RECURSIVE=YES/NO` Set to `NO` (or `0`) for a flat clone without
+recursing into submodules. [default is including submodules: `YES`]
+
+`FOO_DIRNAME=<name>` Set the local directory name for the checkout. This will
+be always be extended by the release or branch name as `<name>-<version>`.
+[default is the slug in lower case: `foo`]
+
+`FOO_HOOK=<script>` Set the name of a script that will be run after cloning
+the module, before compiling it. Working directory when running the script
+is the root of the targeted module (e.g. `.../.cache/foo-1.2`).
+[default: no hooks are run]
+
+`FOO_VARNAME=<name>` Set the name that is used for the module when creating
+the `RELEASE.local` files. [default is the slug in upper case: `FOO`]
+
+The ci-scripts module contains default settings for widely used modules, so
+that usually it is sufficient to set `FOO=<version>`.
+You can find the list of supported (and tested) modules in `defaults.set`.
+Feel free to suggest more default settings using a Pull Request.
+
+## Debugging
+
+Setting `VV=1` in your `.travis.yml` configuration for a specific job
+will run the job with high verbosity, printing every command as it is being
+executed and switching the dependency builds to higher verbosity.
+
+## Release Numbering of this Module

 Major release numbers refer to the API, which is more or less defined
-by the `.travis.yml.example-full` configuration example.
-Changing this file for the existing configuration options or to add
-new configurations options will usually cause a new major release.
+by the full configuration examples in the service specific
+subdirectories.
+If one of these files has to be changed for the existing configuration
+options or important new options are being added, a new major release
+is created.

-Minor release numbers refer to bugfixes that should not require a user
-module (i.e., its `.travis.yml`) to be changed.
+Minor release numbers refer to bugfixes that should not require the
+configuration inside a user module to be changed.

-Again: using git submodule to include these scripts means that user
-modules always work with a fixed, frozen version of these scripts.
-I.e., developments in the ci-scripts will never break an existing
-application.
+Again: using the git submodule mechanism to include these scripts means
+that user modules always work with a fixed, frozen version.
+I.e., developments in the ci-scripts repository will never break an\
+existing application.
 These release numbering considerations are just a hint to assess the
-risk when updating the submodule.
+risks when updating the submodule.
--- a/configure/CONFIG
+++ b/configure/CONFIG
@@ -0,0 +1,29 @@
+# CONFIG - Load build configuration data
+#
+# Do not make changes to this file!
+
+# Allow user to override where the build rules come from
+RULES = $(EPICS_BASE)
+
+# RELEASE files point to other application tops
+include $(TOP)/configure/RELEASE
+-include $(TOP)/configure/RELEASE.$(EPICS_HOST_ARCH).Common
+ifdef T_A
+-include $(TOP)/configure/RELEASE.Common.$(T_A)
+-include $(TOP)/configure/RELEASE.$(EPICS_HOST_ARCH).$(T_A)
+endif
+
+CONFIG = $(RULES)/configure
+include $(CONFIG)/CONFIG
+
+# Override the Base definition:
+INSTALL_LOCATION = $(TOP)
+
+# CONFIG_SITE files contain other build configuration settings
+include $(TOP)/configure/CONFIG_SITE
+-include $(TOP)/configure/CONFIG_SITE.$(EPICS_HOST_ARCH).Common
+ifdef T_A
+ -include $(TOP)/configure/CONFIG_SITE.Common.$(T_A)
+ -include $(TOP)/configure/CONFIG_SITE.$(EPICS_HOST_ARCH).$(T_A)
+endif
+
--- a/configure/CONFIG_SITE
+++ b/configure/CONFIG_SITE
@@ -0,0 +1,43 @@
+# CONFIG_SITE
+
+# Make any application-specific changes to the EPICS build
+#   configuration variables in this file.
+#
+# Host/target specific settings can be specified in files named
+#   CONFIG_SITE.$(EPICS_HOST_ARCH).Common
+#   CONFIG_SITE.Common.$(T_A)
+#   CONFIG_SITE.$(EPICS_HOST_ARCH).$(T_A)
+
+# CHECK_RELEASE controls the consistency checking of the support
+#   applications pointed to by the RELEASE* files.
+# Normally CHECK_RELEASE should be set to YES.
+# Set CHECK_RELEASE to NO to disable checking completely.
+# Set CHECK_RELEASE to WARN to perform consistency checking but
+#   continue building even if conflicts are found.
+CHECK_RELEASE = YES
+
+# Set this when you only want to compile this application
+#   for a subset of the cross-compiled target architectures
+#   that Base is built for.
+#CROSS_COMPILER_TARGET_ARCHS = vxWorks-ppc32
+
+# To install files into a location other than $(TOP) define
+#   INSTALL_LOCATION here.
+#INSTALL_LOCATION=</absolute/path/to/install/top>
+
+# Set this when the IOC and build host use different paths
+#   to the install location. This may be needed to boot from
+#   a Microsoft FTP server say, or on some NFS configurations.
+#IOCS_APPL_TOP = </IOC's/absolute/path/to/install/top>
+
+# For application debugging purposes, override the HOST_OPT and/
+#   or CROSS_OPT settings from base/configure/CONFIG_SITE
+#HOST_OPT = NO
+#CROSS_OPT = NO
+
+# These allow developers to override the CONFIG_SITE variable
+# settings without having to modify the configure/CONFIG_SITE
+# file itself.
+-include $(TOP)/../CONFIG_SITE.local
+-include $(TOP)/configure/CONFIG_SITE.local
+
--- a/configure/Makefile
+++ b/configure/Makefile
@@ -0,0 +1,8 @@
+TOP=..
+
+include $(TOP)/configure/CONFIG
+
+TARGETS = $(CONFIG_TARGETS)
+CONFIGS += $(subst ../,,$(wildcard $(CONFIG_INSTALLS)))
+
+include $(TOP)/configure/RULES
--- a/configure/RELEASE
+++ b/configure/RELEASE
@@ -0,0 +1,43 @@
+# RELEASE - Location of external support modules
+#
+# IF YOU MAKE ANY CHANGES to this file you must subsequently
+# do a "gnumake rebuild" in this application's top level
+# directory.
+#
+# The build process does not check dependencies against files
+# that are outside this application, thus you should do a
+# "gnumake rebuild" in the top level directory after EPICS_BASE
+# or any other external module pointed to below is rebuilt.
+#
+# Host- or target-specific settings can be given in files named
+#  RELEASE.$(EPICS_HOST_ARCH).Common
+#  RELEASE.Common.$(T_A)
+#  RELEASE.$(EPICS_HOST_ARCH).$(T_A)
+#
+# This file is parsed by both GNUmake and an EPICS Perl script,
+# so it can ONLY contain definititions of paths to other support
+# modules, variable definitions that are used in module paths,
+# and include statements that pull in other RELEASE files.
+# Variables may be used before their values have been set.
+# Build variables that are NOT used in paths should be set in
+# the CONFIG_SITE file.
+
+# Variables and paths to dependent modules:
+#MODULES = /path/to/modules
+#MYMODULE = $(MODULES)/my-module
+
+# If using the sequencer, point SNCSEQ at its top directory:
+#SNCSEQ = $(MODULES)/seq-ver
+
+# EPICS_BASE should appear last so earlier modules can override stuff:
+EPICS_BASE = /home/ralph/work/EPICS/V3/base-3.15.6
+
+# Set RULES here if you want to use build rules from somewhere
+# other than EPICS_BASE:
+#RULES = $(MODULES)/build-rules
+
+# These allow developers to override the RELEASE variable settings
+# without having to modify the configure/RELEASE file itself.
+-include $(TOP)/../RELEASE.local
+-include $(TOP)/configure/RELEASE.local
+
--- a/configure/RULES
+++ b/configure/RULES
@@ -0,0 +1,6 @@
+# RULES
+
+include $(CONFIG)/RULES
+
+# Library should be rebuilt because LIBOBJS may have changed.
+$(LIBNAME): ../Makefile
--- a/configure/RULES.ioc
+++ b/configure/RULES.ioc
@@ -0,0 +1,2 @@
+#RULES.ioc
+include $(CONFIG)/RULES.ioc
--- a/configure/RULES_DIRS
+++ b/configure/RULES_DIRS
@@ -0,0 +1,2 @@
+#RULES_DIRS
+include $(CONFIG)/RULES_DIRS
--- a/configure/RULES_TOP
+++ b/configure/RULES_TOP
@@ -0,0 +1,3 @@
+#RULES_TOP
+include $(CONFIG)/RULES_TOP
+
--- a/defaults.set
+++ b/defaults.set
@@ -0,0 +1,35 @@
+# EPICS Base
+BASE_DIRNAME=base
+BASE_REPONAME=epics-base
+BASE_REPOOWNER=epics-base
+BASE_VARNAME=EPICS_BASE
+
+PVDATA_DIRNAME=pvData
+PVDATA_REPONAME=pvDataCPP
+PVDATA_REPOOWNER=epics-base
+
+PVACCESS_DIRNAME=pvAccess
+PVACCESS_REPONAME=pvAccessCPP
+PVACCESS_REPOOWNER=epics-base
+
+NTYPES_DIRNAME=normativeTypes
+NTYPES_REPONAME=normativeTypesCPP
+NTYPES_REPOOWNER=epics-base
+
+# Sequencer
+SNCSEQ_REPOURL=https://www-csr.bessy.de/control/SoftDist/sequencer/repo/branch-2-2.git
+SNCSEQ_DEPTH=0
+SNCSEQ_DIRNAME=seq
+
+# StreamDevice
+STREAM_REPONAME=StreamDevice
+STREAM_REPOOWNER=paulscherrerinstitute
+
+# The default settings also work (and are tested) for:
+# asyn
+# std
+# calc
+# autosave
+# busy
+# sscan
+# iocStats
--- a/exampleApp/Db/Makefile
+++ b/exampleApp/Db/Makefile
@@ -0,0 +1,18 @@
+TOP=../..
+include $(TOP)/configure/CONFIG
+#----------------------------------------
+#  ADD MACRO DEFINITIONS BELOW HERE
+
+# Install databases, templates & substitutions like this
+DB += dbExample1.db
+DB += dbExample2.db
+DB += dbSubExample.db
+DB += user.substitutions
+
+# If <anyname>.db template is not named <anyname>*.template add
+# <anyname>_TEMPLATE = <templatename>
+
+include $(TOP)/configure/RULES
+#----------------------------------------
+#  ADD EXTRA GNUMAKE RULES BELOW HERE
+
--- a/exampleApp/Db/dbExample1.db
+++ b/exampleApp/Db/dbExample1.db
@@ -0,0 +1,62 @@
+record(ai, "$(user):aiExample")
+{
+	field(DESC, "Analog input")
+	field(INP, "$(user):calcExample.VAL  NPP NMS")
+	field(EGUF, "10")
+	field(EGU, "Counts")
+	field(HOPR, "10")
+	field(LOPR, "0")
+	field(HIHI, "8")
+	field(HIGH, "6")
+	field(LOW, "4")
+	field(LOLO, "2")
+	field(HHSV, "MAJOR")
+	field(HSV, "MINOR")
+	field(LSV, "MINOR")
+	field(LLSV, "MAJOR")
+}
+record(calc, "$(user):calcExample")
+{
+	field(DESC, "Counter")
+	field(SCAN,"1 second")
+	field(FLNK, "$(user):aiExample")
+	field(CALC, "(A<B)?(A+C):D")
+	field(INPA, "$(user):calcExample.VAL  NPP NMS")
+	field(INPB, "9")
+	field(INPC, "1")
+	field(INPD, "0")
+	field(EGU, "Counts")
+	field(HOPR, "10")
+	field(HIHI, "8")
+	field(HIGH, "6")
+	field(LOW, "4")
+	field(LOLO, "2")
+	field(HHSV, "MAJOR")
+	field(HSV, "MINOR")
+	field(LSV, "MINOR")
+	field(LLSV, "MAJOR")
+}
+record(xxx, "$(user):xxxExample")
+{
+	field(DESC, "xxx record")
+	field(EGU, "Counts")
+	field(HOPR, "10")
+	field(HIHI, "8")
+	field(HIGH, "6")
+	field(LOW, "4")
+	field(LOLO, "2")
+	field(HHSV, "MAJOR")
+	field(HSV, "MINOR")
+	field(LSV, "MINOR")
+	field(LLSV, "MAJOR")
+}
+record(compress,"$(user):compressExample")
+{
+	field(DESC, "Circular buffer")
+	field(INP,"$(user):aiExample.VAL CP NMS")
+	field(ALG,"Circular Buffer")
+	field(NSAM,"10")
+	field(HOPR,"10")
+	field(EGU,"Counts")
+}
+
--- a/exampleApp/Db/dbExample2.db
+++ b/exampleApp/Db/dbExample2.db
@@ -0,0 +1,40 @@
+record(calc, "$(user):calcExample$(no)")
+{
+	alias("$(user):calc$(no)")
+	field(DESC, "Counter No. $(no)")
+	field(SCAN,"$(scan)")
+	field(FLNK, "$(user):aiExample$(no)")
+	field(CALC, "(A<B)?(A+C):D")
+	field(INPA, "$(user):calcExample$(no).VAL NPP NMS")
+	field(INPB, "9")
+	field(INPC, "1")
+	field(INPD, "0")
+	field(EGU, "Counts")
+	field(HOPR, "10")
+	field(HIHI, "8")
+	field(HIGH, "6")
+	field(LOW, "4")
+	field(LOLO, "2")
+	field(HHSV, "MAJOR")
+	field(HSV, "MINOR")
+	field(LSV, "MINOR")
+	field(LLSV, "MAJOR")
+}
+record(ai, "$(user):aiExample$(no)")
+{
+	field(DESC, "Analog input No. $(no)")
+	field(INP, "$(user):calcExample$(no).VAL NPP NMS")
+	field(EGUF, "10")
+	field(EGU, "Counts")
+	field(HOPR, "10")
+	field(LOPR, "0")
+	field(HIHI, "8")
+	field(HIGH, "6")
+	field(LOW, "4")
+	field(LOLO, "2")
+	field(HHSV, "MAJOR")
+	field(HSV, "MINOR")
+	field(LSV, "MINOR")
+	field(LLSV, "MAJOR")
+}
+alias("$(user):aiExample$(no)","$(user):ai$(no)")
--- a/exampleApp/Db/dbSubExample.db
+++ b/exampleApp/Db/dbSubExample.db
@@ -0,0 +1,13 @@
+record(sub,"$(user):subExample")
+{
+    field(INAM,"mySubInit")
+    field(SNAM,"mySubProcess")
+}
+record(aSub,"$(user):aSubExample")
+{
+    field(INAM,"myAsubInit")
+    field(SNAM,"myAsubProcess")
+    field(FTA,"DOUBLE")
+    field(NOA,"10")
+    field(INPA,"$(user):compressExample CPP")
+}
--- a/exampleApp/Db/user.substitutions
+++ b/exampleApp/Db/user.substitutions
@@ -0,0 +1,12 @@
+# Example substitutions file
+
+file "db/dbExample1.db" {
+    { user = "ralph" }
+}
+
+file db/dbExample2.db {
+    pattern { user, no, scan }
+        { "ralph", 1, "1 second" }
+        { "ralph", 2, "2 second" }
+        { "ralph", 3, "5 second" }
+}
--- a/exampleApp/Makefile
+++ b/exampleApp/Makefile
@@ -0,0 +1,8 @@
+TOP = ..
+include $(TOP)/configure/CONFIG
+DIRS := $(DIRS) $(filter-out $(DIRS), $(wildcard *src*))
+DIRS := $(DIRS) $(filter-out $(DIRS), $(wildcard *Src*))
+DIRS := $(DIRS) $(filter-out $(DIRS), $(wildcard *db*))
+DIRS := $(DIRS) $(filter-out $(DIRS), $(wildcard *Db*))
+include $(TOP)/configure/RULES_DIRS
+
--- a/exampleApp/src/Makefile
+++ b/exampleApp/src/Makefile
@@ -0,0 +1,79 @@
+TOP=../..
+
+include $(TOP)/configure/CONFIG
+#----------------------------------------
+#  ADD MACRO DEFINITIONS BELOW HERE
+
+# xxxRecord.h will be created from xxxRecord.dbd
+DBDINC += xxxRecord
+
+# Install xxxSupport.dbd into <top>/dbd
+DBD += xxxSupport.dbd
+
+# Build an IOC support library
+LIBRARY_IOC += exampleSupport
+
+# Compile and add the code to the support library
+exampleSupport_SRCS += xxxRecord.c
+exampleSupport_SRCS += devXxxSoft.c
+
+# Link locally-provided code into the support library,
+# rather than directly into the IOC application.
+# This is required for Windows DLL builds.
+exampleSupport_SRCS += dbSubExample.c
+exampleSupport_SRCS += exampleHello.c
+exampleSupport_SRCS += initTrace.c
+
+exampleSupport_LIBS += $(EPICS_BASE_IOC_LIBS)
+
+
+# Build the IOC application
+PROD_IOC = example
+
+# example.dbd will be created and installed
+DBD += example.dbd
+
+# example.dbd will include these files:
+example_DBD += base.dbd
+example_DBD += xxxSupport.dbd
+example_DBD += dbSubExample.dbd
+example_DBD += exampleHello.dbd
+example_DBD += initTrace.dbd
+
+# example_registerRecordDeviceDriver.cpp derives from example.dbd
+example_SRCS += example_registerRecordDeviceDriver.cpp
+
+# Build the main IOC entry point where needed
+example_SRCS_DEFAULT += exampleMain.cpp
+example_SRCS_vxWorks += -nil-
+
+# Link in the code from our support library
+example_LIBS += exampleSupport
+
+# To build SNL programs, SNCSEQ must be defined
+# in the <top>/configure/RELEASE file
+ifneq ($(SNCSEQ),)
+    # Build sncExample into exampleSupport
+    sncExample_SNCFLAGS += +r
+    example_DBD += sncExample.dbd
+    # A .stt sequence program is *not* pre-processed:
+    exampleSupport_SRCS += sncExample.stt
+    exampleSupport_LIBS += seq pv
+    example_LIBS += seq pv
+
+    # Build sncProgram as a standalone program
+    PROD_HOST += sncProgram
+    sncProgram_SNCFLAGS += +m
+    # A .st sequence program *is* pre-processed:
+    sncProgram_SRCS += sncProgram.st
+    sncProgram_LIBS += seq pv
+    sncProgram_LIBS += $(EPICS_BASE_HOST_LIBS)
+endif
+
+# Finally link IOC to the EPICS Base libraries
+example_LIBS += $(EPICS_BASE_IOC_LIBS)
+
+include $(TOP)/configure/RULES
+#----------------------------------------
+#  ADD EXTRA GNUMAKE RULES BELOW HERE
+
--- a/exampleApp/src/dbSubExample.c
+++ b/exampleApp/src/dbSubExample.c
@@ -0,0 +1,49 @@
+#include <stdio.h>
+
+#include <dbDefs.h>
+#include <registryFunction.h>
+#include <subRecord.h>
+#include <aSubRecord.h>
+#include <epicsExport.h>
+
+int mySubDebug;
+
+static long mySubInit(subRecord *precord)
+{
+    if (mySubDebug)
+        printf("Record %s called mySubInit(%p)\n",
+               precord->name, (void*) precord);
+    return 0;
+}
+
+static long mySubProcess(subRecord *precord)
+{
+    if (mySubDebug)
+        printf("Record %s called mySubProcess(%p)\n",
+               precord->name, (void*) precord);
+    return 0;
+}
+
+static long myAsubInit(aSubRecord *precord)
+{
+    if (mySubDebug)
+        printf("Record %s called myAsubInit(%p)\n",
+               precord->name, (void*) precord);
+    return 0;
+}
+
+static long myAsubProcess(aSubRecord *precord)
+{
+    if (mySubDebug)
+        printf("Record %s called myAsubProcess(%p)\n",
+               precord->name, (void*) precord);
+    return 0;
+}
+
+/* Register these symbols for use by IOC code: */
+
+epicsExportAddress(int, mySubDebug);
+epicsRegisterFunction(mySubInit);
+epicsRegisterFunction(mySubProcess);
+epicsRegisterFunction(myAsubInit);
+epicsRegisterFunction(myAsubProcess);
--- a/exampleApp/src/dbSubExample.dbd
+++ b/exampleApp/src/dbSubExample.dbd
@@ -0,0 +1,5 @@
+variable(mySubDebug)
+function(mySubInit)
+function(mySubProcess)
+function(myAsubInit)
+function(myAsubProcess)
--- a/exampleApp/src/devXxxSoft.c
+++ b/exampleApp/src/devXxxSoft.c
@@ -0,0 +1,58 @@
+/* devXxxSoft.c */
+/* Example device support module */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "alarm.h"
+#include "cvtTable.h"
+#include "dbDefs.h"
+#include "dbAccess.h"
+#include "recGbl.h"
+#include "recSup.h"
+#include "devSup.h"
+#include "link.h"
+#include "xxxRecord.h"
+#include "epicsExport.h"
+
+/*Create the dset for devXxxSoft */
+static long init_record();
+static long read_xxx();
+struct {
+	long		number;
+	DEVSUPFUN	report;
+	DEVSUPFUN	init;
+	DEVSUPFUN	init_record;
+	DEVSUPFUN	get_ioint_info;
+	DEVSUPFUN	read_xxx;
+}devXxxSoft={
+	5,
+	NULL,
+	NULL,
+	init_record,
+	NULL,
+	read_xxx,
+};
+epicsExportAddress(dset,devXxxSoft);
+
+
+static long init_record(pxxx)
+    struct xxxRecord	*pxxx;
+{
+    if(recGblInitConstantLink(&pxxx->inp,DBF_DOUBLE,&pxxx->val))
+         pxxx->udf = FALSE;
+    return(0);
+}
+
+static long read_xxx(pxxx)
+    struct xxxRecord	*pxxx;
+{
+    long status;
+
+    status = dbGetLink(&(pxxx->inp),DBF_DOUBLE, &(pxxx->val),0,0);
+    /*If return was succesful then set undefined false*/
+    if(!status) pxxx->udf = FALSE;
+    return(0);
+}
--- a/exampleApp/src/exampleHello.c
+++ b/exampleApp/src/exampleHello.c
@@ -0,0 +1,31 @@
+/* Example showing how to register a new command with iocsh */
+
+#include <stdio.h>
+
+#include <epicsExport.h>
+#include <iocsh.h>
+
+/* This is the command, which the vxWorks shell will call directly */
+void hello(const char *name) {
+    if (name) {
+	printf("Hello %s, from example\n", name);
+    } else {
+	puts("Hello from example");
+    }
+}
+
+/* Information needed by iocsh */
+static const iocshArg     helloArg0 = {"name", iocshArgString};
+static const iocshArg    *helloArgs[] = {&helloArg0};
+static const iocshFuncDef helloFuncDef = {"hello", 1, helloArgs};
+
+/* Wrapper called by iocsh, selects the argument types that hello needs */
+static void helloCallFunc(const iocshArgBuf *args) {
+    hello(args[0].sval);
+}
+
+/* Registration routine, runs at startup */
+static void helloRegister(void) {
+    iocshRegister(&helloFuncDef, helloCallFunc);
+}
+epicsExportRegistrar(helloRegister);
--- a/exampleApp/src/exampleHello.dbd
+++ b/exampleApp/src/exampleHello.dbd
@@ -0,0 +1 @@
+registrar(helloRegister)
--- a/exampleApp/src/exampleMain.cpp
+++ b/exampleApp/src/exampleMain.cpp
@@ -0,0 +1,23 @@
+/* exampleMain.cpp */
+/* Author:  Marty Kraimer Date:    17MAR2000 */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "epicsExit.h"
+#include "epicsThread.h"
+#include "iocsh.h"
+
+int main(int argc,char *argv[])
+{
+    if(argc>=2) {    
+        iocsh(argv[1]);
+        epicsThreadSleep(.2);
+    }
+    iocsh(NULL);
+    epicsExit(0);
+    return(0);
+}
--- a/exampleApp/src/initTrace.c
+++ b/exampleApp/src/initTrace.c
@@ -0,0 +1,39 @@
+/* initTrace.c */
+
+/*
+ * An initHook routine to trace the iocInit() process.
+ * Prints out the name of each state as it is reached.
+ */
+
+#include <stdio.h>
+
+#include "initHooks.h"
+#include "epicsExport.h"
+#include "iocsh.h"
+
+
+static void trace(initHookState state) {
+    printf("iocInit: Reached %s\n", initHookName(state));
+}
+
+int traceIocInit(void) {
+    static int done = 0;
+    if (done)
+        return -1;
+    done = 1;
+
+    initHookRegister(trace);
+    puts("iocInit will be traced");
+    return 0;
+}
+
+
+static const iocshFuncDef traceInitFuncDef = {"traceIocInit", 0, NULL};
+static void traceInitFunc(const iocshArgBuf *args) {
+    traceIocInit();
+}
+
+static void initTraceRegister(void) {
+    iocshRegister(&traceInitFuncDef, traceInitFunc);
+}
+epicsExportRegistrar(initTraceRegister);
--- a/exampleApp/src/initTrace.dbd
+++ b/exampleApp/src/initTrace.dbd
@@ -0,0 +1 @@
+registrar(initTraceRegister)
--- a/exampleApp/src/sncExample.dbd
+++ b/exampleApp/src/sncExample.dbd
@@ -0,0 +1 @@
+registrar(sncExampleRegistrar)
--- a/exampleApp/src/sncExample.stt
+++ b/exampleApp/src/sncExample.stt
@@ -0,0 +1,22 @@
+program sncExample
+double v;
+assign v to "{user}:aiExample";
+monitor v;
+
+ss ss1 {
+    state init {
+	when (delay(10)) {
+	    printf("sncExample: Startup delay over\n");
+	} state low
+    }
+    state low {
+	when (v > 5.0) {
+	    printf("sncExample: Changing to high\n");
+	} state high
+    }
+    state high {
+	when (v <= 5.0) {
+	    printf("sncExample: Changing to low\n");
+	} state low
+    }
+}
--- a/exampleApp/src/sncProgram.st
+++ b/exampleApp/src/sncProgram.st
@@ -0,0 +1 @@
+#include "../sncExample.stt"
--- a/exampleApp/src/xxxRecord.c
+++ b/exampleApp/src/xxxRecord.c
@@ -0,0 +1,273 @@
+/* xxxRecord.c */
+/* Example record support module */
+  
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "epicsMath.h"
+#include "alarm.h"
+#include "dbAccess.h"
+#include "recGbl.h"
+#include "dbEvent.h"
+#include "dbDefs.h"
+#include "dbAccess.h"
+#include "devSup.h"
+#include "errMdef.h"
+#include "recSup.h"
+#include "special.h"
+#define GEN_SIZE_OFFSET
+#include "xxxRecord.h"
+#undef  GEN_SIZE_OFFSET
+#include "epicsExport.h"
+
+/* Create RSET - Record Support Entry Table */
+#define report NULL
+#define initialize NULL
+static long init_record();
+static long process();
+#define special NULL
+#define get_value NULL
+#define cvt_dbaddr NULL
+#define get_array_info NULL
+#define put_array_info NULL
+static long get_units();
+static long get_precision();
+#define get_enum_str NULL
+#define get_enum_strs NULL
+#define put_enum_str NULL
+static long get_graphic_double();
+static long get_control_double();
+static long get_alarm_double();
+ 
+rset xxxRSET={
+	RSETNUMBER,
+	report,
+	initialize,
+	init_record,
+	process,
+	special,
+	get_value,
+	cvt_dbaddr,
+	get_array_info,
+	put_array_info,
+	get_units,
+	get_precision,
+	get_enum_str,
+	get_enum_strs,
+	put_enum_str,
+	get_graphic_double,
+	get_control_double,
+	get_alarm_double
+};
+epicsExportAddress(rset,xxxRSET);
+
+typedef struct xxxset { /* xxx input dset */
+	long		number;
+	DEVSUPFUN	dev_report;
+	DEVSUPFUN	init;
+	DEVSUPFUN	init_record; /*returns: (-1,0)=>(failure,success)*/
+	DEVSUPFUN	get_ioint_info;
+	DEVSUPFUN	read_xxx;
+}xxxdset;
+
+static void checkAlarms(xxxRecord *prec);
+static void monitor(xxxRecord *prec);
+
+static long init_record(void *precord,int pass)
+{
+    xxxRecord	*prec = (xxxRecord *)precord;
+    xxxdset	*pdset;
+    long	status;
+
+    if (pass==0) return(0);
+
+    if(!(pdset = (xxxdset *)(prec->dset))) {
+	recGblRecordError(S_dev_noDSET,(void *)prec,"xxx: init_record");
+	return(S_dev_noDSET);
+    }
+    /* must have read_xxx function defined */
+    if( (pdset->number < 5) || (pdset->read_xxx == NULL) ) {
+	recGblRecordError(S_dev_missingSup,(void *)prec,"xxx: init_record");
+	return(S_dev_missingSup);
+    }
+
+    if( pdset->init_record ) {
+	if((status=(*pdset->init_record)(prec))) return(status);
+    }
+    return(0);
+}
+
+static long process(void *precord)
+{
+	xxxRecord	*prec = (xxxRecord *)precord;
+	xxxdset		*pdset = (xxxdset *)(prec->dset);
+	long		 status;
+	unsigned char    pact=prec->pact;
+
+	if( (pdset==NULL) || (pdset->read_xxx==NULL) ) {
+		prec->pact=TRUE;
+		recGblRecordError(S_dev_missingSup,(void *)prec,"read_xxx");
+		return(S_dev_missingSup);
+	}
+
+	/* pact must not be set until after calling device support */
+	status=(*pdset->read_xxx)(prec);
+	/* check if device support set pact */
+	if ( !pact && prec->pact ) return(0);
+	prec->pact = TRUE;
+
+	recGblGetTimeStamp(prec);
+	/* check for alarms */
+	checkAlarms(prec);
+	/* check event list */
+	monitor(prec);
+	/* process the forward scan link record */
+        recGblFwdLink(prec);
+
+	prec->pact=FALSE;
+	return(status);
+}
+
+static long get_units(DBADDR *paddr, char *units)
+{
+    xxxRecord	*prec=(xxxRecord *)paddr->precord;
+
+    strncpy(units,prec->egu,DB_UNITS_SIZE);
+    return(0);
+}
+
+static long get_precision(DBADDR *paddr, long *precision)
+{
+    xxxRecord	*prec=(xxxRecord *)paddr->precord;
+
+    *precision = prec->prec;
+    if(paddr->pfield == (void *)&prec->val) return(0);
+    recGblGetPrec(paddr,precision);
+    return(0);
+}
+
+static long get_graphic_double(DBADDR *paddr,struct dbr_grDouble *pgd)
+{
+    xxxRecord	*prec=(xxxRecord *)paddr->precord;
+    int		fieldIndex = dbGetFieldIndex(paddr);
+
+    if(fieldIndex == xxxRecordVAL
+    || fieldIndex == xxxRecordHIHI
+    || fieldIndex == xxxRecordHIGH
+    || fieldIndex == xxxRecordLOW
+    || fieldIndex == xxxRecordLOLO
+    || fieldIndex == xxxRecordHOPR
+    || fieldIndex == xxxRecordLOPR) {
+        pgd->upper_disp_limit = prec->hopr;
+        pgd->lower_disp_limit = prec->lopr;
+    } else recGblGetGraphicDouble(paddr,pgd);
+    return(0);
+}
+
+static long get_control_double(DBADDR *paddr,struct dbr_ctrlDouble *pcd)
+{
+    xxxRecord	*prec=(xxxRecord *)paddr->precord;
+    int		fieldIndex = dbGetFieldIndex(paddr);
+
+    if(fieldIndex == xxxRecordVAL
+    || fieldIndex == xxxRecordHIHI
+    || fieldIndex == xxxRecordHIGH
+    || fieldIndex == xxxRecordLOW
+    || fieldIndex == xxxRecordLOLO) {
+	pcd->upper_ctrl_limit = prec->hopr;
+	pcd->lower_ctrl_limit = prec->lopr;
+    } else recGblGetControlDouble(paddr,pcd);
+    return(0);
+}
+
+static long get_alarm_double(DBADDR *paddr,struct dbr_alDouble *pad)
+{
+    xxxRecord	*prec=(xxxRecord *)paddr->precord;
+    int		fieldIndex = dbGetFieldIndex(paddr);
+
+    if(fieldIndex == xxxRecordVAL) {
+        pad->upper_alarm_limit = prec->hhsv ? prec->hihi : epicsNAN;
+        pad->upper_warning_limit = prec->hsv ? prec->high : epicsNAN;
+        pad->lower_warning_limit = prec->lsv ? prec->low : epicsNAN;
+        pad->lower_alarm_limit = prec->llsv ? prec->lolo : epicsNAN;
+    } else recGblGetAlarmDouble(paddr,pad);
+    return(0);
+}
+
+static void checkAlarms(xxxRecord *prec)
+{
+    double		val, hyst, lalm;
+    float		hihi, high, low, lolo;
+	unsigned short	hhsv, llsv, hsv, lsv;
+
+	if(prec->udf == TRUE ){
+        recGblSetSevr(prec,UDF_ALARM,INVALID_ALARM);
+		return;
+	}
+	hihi = prec->hihi; lolo = prec->lolo; high = prec->high; low = prec->low;
+	hhsv = prec->hhsv; llsv = prec->llsv; hsv = prec->hsv; lsv = prec->lsv;
+	val = prec->val; hyst = prec->hyst; lalm = prec->lalm;
+
+	/* alarm condition hihi */
+	if (hhsv && (val >= hihi || ((lalm==hihi) && (val >= hihi-hyst)))){
+	        if (recGblSetSevr(prec,HIHI_ALARM,prec->hhsv)) prec->lalm = hihi;
+		return;
+	}
+
+	/* alarm condition lolo */
+	if (llsv && (val <= lolo || ((lalm==lolo) && (val <= lolo+hyst)))){
+	        if (recGblSetSevr(prec,LOLO_ALARM,prec->llsv)) prec->lalm = lolo;
+		return;
+	}
+
+	/* alarm condition high */
+	if (hsv && (val >= high || ((lalm==high) && (val >= high-hyst)))){
+	        if (recGblSetSevr(prec,HIGH_ALARM,prec->hsv)) prec->lalm = high;
+		return;
+	}
+
+	/* alarm condition low */
+	if (lsv && (val <= low || ((lalm==low) && (val <= low+hyst)))){
+	        if (recGblSetSevr(prec,LOW_ALARM,prec->lsv)) prec->lalm = low;
+		return;
+	}
+
+	/* we get here only if val is out of alarm by at least hyst */
+	prec->lalm = val;
+	return;
+}
+
+static void monitor(xxxRecord *prec)
+{
+	unsigned short	monitor_mask;
+	double		delta;
+
+        monitor_mask = recGblResetAlarms(prec);
+	/* check for value change */
+	delta = prec->mlst - prec->val;
+	if(delta<0.0) delta = -delta;
+	if (delta > prec->mdel) {
+		/* post events for value change */
+		monitor_mask |= DBE_VALUE;
+		/* update last value monitored */
+		prec->mlst = prec->val;
+	}
+
+	/* check for archive change */
+	delta = prec->alst - prec->val;
+	if(delta<0.0) delta = -delta;
+	if (delta > prec->adel) {
+		/* post events on value field for archive change */
+		monitor_mask |= DBE_LOG;
+		/* update last archive value monitored */
+		prec->alst = prec->val;
+	}
+
+	/* send out monitors connected to the value field */
+	if (monitor_mask){
+		db_post_events(prec,&prec->val,monitor_mask);
+	}
+	return;
+}
--- a/exampleApp/src/xxxRecord.dbd
+++ b/exampleApp/src/xxxRecord.dbd
@@ -0,0 +1,117 @@
+recordtype(xxx) {
+        include "dbCommon.dbd"
+        field(VAL,DBF_DOUBLE) {
+                prompt("Current EGU Value")
+                asl(ASL0)
+                pp(TRUE)
+        }
+        field(INP,DBF_INLINK) {
+                prompt("Input Specification")
+                promptgroup(GUI_INPUTS)
+                special(SPC_NOMOD)
+                interest(1)
+        }
+        field(PREC,DBF_SHORT) {
+                prompt("Display Precision")
+                promptgroup(GUI_DISPLAY)
+                interest(1)
+        }
+        field(EGU,DBF_STRING) {
+                prompt("Engineering Units")
+                promptgroup(GUI_DISPLAY)
+                interest(1)
+                size(16)
+        }
+        field(HOPR,DBF_FLOAT) {
+                prompt("High Operating Range")
+                promptgroup(GUI_DISPLAY)
+                interest(1)
+        }
+        field(LOPR,DBF_FLOAT) {
+                prompt("Low Operating Range")
+                promptgroup(GUI_DISPLAY)
+                interest(1)
+        }
+        field(HIHI,DBF_FLOAT) {
+                prompt("Hihi Alarm Limit")
+                promptgroup(GUI_ALARMS)
+                pp(TRUE)
+                interest(1)
+        }
+        field(LOLO,DBF_FLOAT) {
+                prompt("Lolo Alarm Limit")
+                promptgroup(GUI_ALARMS)
+                pp(TRUE)
+                interest(1)
+        }
+        field(HIGH,DBF_FLOAT) {
+                prompt("High Alarm Limit")
+                promptgroup(GUI_ALARMS)
+                pp(TRUE)
+                interest(1)
+        }
+        field(LOW,DBF_FLOAT) {
+                prompt("Low Alarm Limit")
+                promptgroup(GUI_ALARMS)
+                pp(TRUE)
+                interest(1)
+        }
+        field(HHSV,DBF_MENU) {
+                prompt("Hihi Severity")
+                promptgroup(GUI_ALARMS)
+                pp(TRUE)
+                interest(1)
+                menu(menuAlarmSevr)
+        }
+        field(LLSV,DBF_MENU) {
+                prompt("Lolo Severity")
+                promptgroup(GUI_ALARMS)
+                pp(TRUE)
+                interest(1)
+                menu(menuAlarmSevr)
+        }
+        field(HSV,DBF_MENU) {
+                prompt("High Severity")
+                promptgroup(GUI_ALARMS)
+                pp(TRUE)
+                interest(1)
+                menu(menuAlarmSevr)
+        }
+        field(LSV,DBF_MENU) {
+                prompt("Low Severity")
+                promptgroup(GUI_ALARMS)
+                pp(TRUE)
+                interest(1)
+                menu(menuAlarmSevr)
+        }
+        field(HYST,DBF_DOUBLE) {
+                prompt("Alarm Deadband")
+                promptgroup(GUI_ALARMS)
+                interest(1)
+        }
+        field(ADEL,DBF_DOUBLE) {
+                prompt("Archive Deadband")
+                promptgroup(GUI_DISPLAY)
+                interest(1)
+        }
+        field(MDEL,DBF_DOUBLE) {
+                prompt("Monitor Deadband")
+                promptgroup(GUI_DISPLAY)
+                interest(1)
+        }
+        field(LALM,DBF_DOUBLE) {
+                prompt("Last Value Alarmed")
+                special(SPC_NOMOD)
+                interest(3)
+        }
+        field(ALST,DBF_DOUBLE) {
+                prompt("Last Value Archived")
+                special(SPC_NOMOD)
+                interest(3)
+        }
+        field(MLST,DBF_DOUBLE) {
+                prompt("Last Val Monitored")
+                special(SPC_NOMOD)
+                interest(3)
+        }
+}
--- a/exampleApp/src/xxxSupport.dbd
+++ b/exampleApp/src/xxxSupport.dbd
@@ -0,0 +1,2 @@
+include "xxxRecord.dbd"
+device(xxx,CONSTANT,devXxxSoft,"SoftChannel")
--- a/test00.set
+++ b/test00.set
@@ -0,0 +1,3 @@
+MODULES=
+
+BASE=R3.15.6
--- a/test01.set
+++ b/test01.set
@@ -0,0 +1,4 @@
+MODULES="sncseq"
+
+BASE=7.0
+SNCSEQ=R2-2-7
--- a/test02.set
+++ b/test02.set
@@ -0,0 +1,10 @@
+# a comment, then an empty line
+
+  # a comment that is indented
+BASE=foo
+# include an existing file
+include test01
+
+FOO=bar
+FOO2=bar bar2
+  FOO3=bar bar2
--- a/test03.set
+++ b/test03.set
@@ -0,0 +1,4 @@
+# Check for avoiding multiple includions
+
+include test01
+include test01
--- a/travis-build.sh
+++ b/travis-build.sh
@@ -1,10 +0,0 @@
-#!/bin/sh
-set -e -x
-
-make -j2 $EXTRA
-
-if [ "$TEST" != "NO" ]
-then
-  make tapfiles
-  make -s test-results
-fi
--- a/travis-prepare.sh
+++ b/travis-prepare.sh
@@ -1,159 +0,0 @@
-#!/bin/sh
-set -e -x
-
-CURDIR="$PWD"
-
-# determine if BASE is a release or a branch
-git ls-remote --quiet --exit-code --tags https://github.com/${REPOBASE:-epics-base}/epics-base.git "$BASE" && BASE_RELEASE=YES
-git ls-remote --quiet --exit-code --heads https://github.com/${REPOBASE:-epics-base}/epics-base.git "$BASE" && BASE_BRANCH=YES
-
-if [ "$BASE_RELEASE" = "YES" ]
-then
-  # TODO: use a cached location
-  BASE_LOCATION=$HOME/.source/epics-base
-else
-  if [ "$BASE_BRANCH" = "YES" ]
-  then
-  BASE_LOCATION=$HOME/.source/epics-base
-  else
-  echo $BASE is neither a tag nor a branch name for BASE
-  exit 1
-  fi
-fi
-
-cat << EOF > $CURDIR/configure/RELEASE.local
-EPICS_BASE=$BASE_LOCATION
-EOF
-
-install -d "$HOME/.source"
-cd "$HOME/.source"
-
-add_gh_flat() {
-  MODULE=$1
-  REPOOWNER=$2
-  REPONAME=$3
-  BRANCH=$4
-  MODULE_UC=$5
-  ( git clone --quiet --depth 5 --branch $BRANCH https://github.com/$REPOOWNER/$REPONAME.git $MODULE && \
-  cd $MODULE && git log -n1 )
-  cat < $CURDIR/configure/RELEASE.local > $MODULE/configure/RELEASE.local
-  cat << EOF >> $CURDIR/configure/RELEASE.local
-${MODULE_UC}=$HOME/.source/$MODULE
-EOF
-}
-
-# not recursive
-git clone --quiet --depth 5 --branch "$BASE" https://github.com/${REPOBASE:-epics-base}/epics-base.git epics-base
-(cd epics-base && git log -n1 )
-for modrepo in ${MODULES}
-do
-  module=${modrepo%CPP}
-  module_uc=$(echo $module | tr 'a-z' 'A-Z')
-  eval add_gh_flat $module \${REPO${module_uc}:-epics-base} $modrepo \${BR${module_uc}:-master} $module_uc
-done
-
-if [ -e $CURDIR/configure/RELEASE.local ]
-then
-  cat $CURDIR/configure/RELEASE.local
-fi
-
-[ "$EPICS_HOST_ARCH" ] || EPICS_HOST_ARCH=`sh epics-base/startup/EpicsHostArch`
-
-# requires wine and g++-mingw-w64-i686
-if [ "$WINE" = "32" ]
-then
-  echo "Cross mingw32"
-  sed -i -e '/CMPLR_PREFIX/d' epics-base/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw
-  cat << EOF >> epics-base/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw
-CMPLR_PREFIX=i686-w64-mingw32-
-EOF
-  cat << EOF >> epics-base/configure/CONFIG_SITE
-CROSS_COMPILER_TARGET_ARCHS+=win32-x86-mingw
-EOF
-
-elif [ "$WINE" = "64" ]
-then
-  echo "Cross mingw64"
-  sed -i -e '/CMPLR_PREFIX/d' epics-base/configure/os/CONFIG_SITE.linux-x86.windows-x64-mingw
-  cat << EOF >> epics-base/configure/os/CONFIG_SITE.linux-x86.windows-x64-mingw
-CMPLR_PREFIX=x86_64-w64-mingw32-
-EOF
-  cat << EOF >> epics-base/configure/CONFIG_SITE
-CROSS_COMPILER_TARGET_ARCHS+=windows-x64-mingw
-EOF
-fi
-
-if [ "$STATIC" = "YES" ]
-then
-  echo "Build static libraries/executables"
-  cat << EOF >> epics-base/configure/CONFIG_SITE
-SHARED_LIBRARIES=NO
-STATIC_BUILD=YES
-EOF
-fi
-
-HOST_CCMPLR_NAME=`echo "$TRAVIS_COMPILER" | sed -E 's/^([[:alpha:]][^-]*(-[[:alpha:]][^-]*)*)+(-[0-9\.]+)?$/\1/g'`
-HOST_CMPLR_VER_SUFFIX=`echo "$TRAVIS_COMPILER" | sed -E 's/^([[:alpha:]][^-]*(-[[:alpha:]][^-]*)*)+(-[0-9\.]+)?$/\3/g'`
-HOST_CMPLR_VER=`echo "$HOST_CMPLR_VER_SUFFIX" | cut -c 2-`
-
-case "$HOST_CCMPLR_NAME" in
-clang)
-  echo "Host compiler is clang"
-  HOST_CPPCMPLR_NAME=$(echo "$HOST_CCMPLR_NAME" | sed 's/clang/clang++/g')
-  cat << EOF >> epics-base/configure/os/CONFIG_SITE.Common.$EPICS_HOST_ARCH
-GNU         = NO
-CMPLR_CLASS = clang
-CC          = ${HOST_CCMPLR_NAME}$HOST_CMPLR_VER_SUFFIX
-CCC         = ${HOST_CPPCMPLR_NAME}$HOST_CMPLR_VER_SUFFIX
-EOF
-
-  # hack
-  sed -i -e 's/CMPLR_CLASS = gcc/CMPLR_CLASS = clang/' epics-base/configure/CONFIG.gnuCommon
-
-  ${HOST_CCMPLR_NAME}$HOST_CMPLR_VER_SUFFIX --version
-  ;;
-gcc)
-  echo "Host compiler is GCC"
-  HOST_CPPCMPLR_NAME=$(echo "$HOST_CCMPLR_NAME" | sed 's/gcc/g++/g')
-  cat << EOF >> epics-base/configure/os/CONFIG_SITE.Common.$EPICS_HOST_ARCH
-CC          = ${HOST_CCMPLR_NAME}$HOST_CMPLR_VER_SUFFIX
-CCC         = ${HOST_CPPCMPLR_NAME}$HOST_CMPLR_VER_SUFFIX
-EOF
-
-  ${HOST_CCMPLR_NAME}$HOST_CMPLR_VER_SUFFIX --version
-  ;;
-*)
-  echo "Host compiler is default"
-  gcc --version
-  ;;
-esac
-
-cat <<EOF >> epics-base/configure/CONFIG_SITE
-USR_CPPFLAGS += $USR_CPPFLAGS
-USR_CFLAGS += $USR_CFLAGS
-USR_CXXFLAGS += $USR_CXXFLAGS
-EOF
-
-# set RTEMS to eg. "4.9" or "4.10"
-# requires qemu, bison, flex, texinfo, install-info
-if [ -n "$RTEMS" ]
-then
-  echo "Cross RTEMS${RTEMS} for pc386"
-  curl -L "https://github.com/mdavidsaver/rsb/releases/download/20171203-${RTEMS}/i386-rtems${RTEMS}-trusty-20171203-${RTEMS}.tar.bz2" \
-  | tar -C / -xmj
-
-  sed -i -e '/^RTEMS_VERSION/d' -e '/^RTEMS_BASE/d' epics-base/configure/os/CONFIG_SITE.Common.RTEMS
-  cat << EOF >> epics-base/configure/os/CONFIG_SITE.Common.RTEMS
-RTEMS_VERSION=$RTEMS
-RTEMS_BASE=$HOME/.rtems
-EOF
-  cat << EOF >> epics-base/configure/CONFIG_SITE
-CROSS_COMPILER_TARGET_ARCHS += RTEMS-pc386-qemu
-EOF
-fi
-
-for modrepo in epics-base ${MODULES}
-do
-  module=${modrepo%CPP}
-  make -j2 -C $module $EXTRA
-done
--- a/travis-test.sh
+++ b/travis-test.sh
@@ -0,0 +1,175 @@
+#!/bin/bash
+
+# Module ci-scripts unit tests
+
+# SET=test00 in .travis.yml runs the tests in this script
+# all other jobs are started as compile jobs
+
+# Set VV empty in .travis.yml to make scripts terse
+[ "${VV:-1}" ] && set -x
+
+[ "$SET" != "test00" ] && exec ./travis/build.sh
+
+UTILS_UNITTEST=1
+
+# Perl version of "readlink -f" (which MacOS does not provide)
+readlinkf() { perl -MCwd -e 'print Cwd::abs_path shift' "$1"; }
+
+# test utilities
+die() {
+  echo "${ANSI_RED}$1${ANSI_RESET}"
+  exit 1
+}
+
+fn_exists() {
+  LC_ALL=C type -t $1 | grep -q function
+}
+
+repo_exists() {
+  DEP=$1
+  dep_lc=$(echo $DEP | tr 'A-Z' 'a-z')
+  eval dirname=\${${DEP}_DIRNAME:=${dep_lc}}
+  eval reponame=\${${DEP}_REPONAME:=${dep_lc}}
+  eval repourl=\${${DEP}_REPOURL:="https://github.com/\${${DEP}_REPOOWNER:=${REPOOWNER:-epics-modules}}/${reponame}.git"}
+
+  git ls-remote --quiet --heads --exit-code $repourl > /dev/null 2>&1
+}
+
+SETUP_DIRS=$(echo $SETUP_PATH | tr ":" "\n")
+
+SCRIPTDIR=$(dirname $(readlinkf $0))/travis
+CURDIR="$PWD"
+CACHEDIR="$HOME/.cache"
+
+echo "Testing contents of utils.sh"
+
+[ -d "$SCRIPTDIR" ] || die "SCRIPTDIR does not exist"
+[ -e "$SCRIPTDIR/utils.sh" ] || die "SCRIPTDIR/utils.sh does not exist"
+
+# source functions
+. $SCRIPTDIR/utils.sh
+
+# check for functions
+fn_exists fold_start || die "function fold_start missing from SCRIPTDIR/utils.sh"
+fn_exists fold_end || die "function fold_end missing from SCRIPTDIR/utils.sh"
+fn_exists source_set || die "function source_set missing from SCRIPTDIR/utils.sh"
+fn_exists update_release_local || die "function update_release_local missing from SCRIPTDIR/utils.sh"
+fn_exists add_dependency || die "function add_dependency missing from SCRIPTDIR/utils.sh"
+
+# test source_set()
+######################################################################
+
+SETUP_DIRS= source_set test01 | grep -q "(SETUP_PATH) is empty" || die "empty search path not detected"
+source_set xxdoesnotexistxx | grep -q "does not exist" || die "missing setup file not detected"
+source_set test01 | grep -q "Loading setup file" || die "test01 setup file not found"
+unset SEEN_SETUPS
+export BASE=foo
+source_set test01
+[ "$BASE" = "foo" ] || die "preset module BASE version does not override test01 setup file (expected foo got $BASE)"
+unset SEEN_SETUPS
+BASE=
+source_set test02
+[ "$BASE" = "foo" ] || die "BASE set in test02 does not override included test01 setup file (expected foo got $BASE)"
+[ "$FOO" = "bar" ] || die "Setting of single word does not work"
+[ "$FOO2" = "bar bar2" ] || die "Setting of multiple words does not work"
+[ "$FOO3" = "bar bar2" ] || die "Indented setting of multiple words does not work"
+[ "$SNCSEQ" = "R2-2-7" ] || die "Setup test01 was not included"
+unset SEEN_SETUPS
+source_set test03 | grep -q "Ignoring already included setup file" || die "test01 setup file included twice"
+
+# test default settings file
+######################################################################
+
+echo "Testing default settings for completeness and valid git repo settings"
+
+[ -e ./defaults.set ] || die "defaults.set does not exist"
+source_set defaults
+
+repo_exists BASE || die "Defaults for BASE do not point to a valid git repository at $repourl"
+repo_exists PVDATA || die "Defaults for PVDATA do not point to a valid git repository at $repourl"
+repo_exists PVACCESS || die "Defaults for PVACCESS do not point to a valid git repository at $repourl"
+repo_exists NTYPES || die "Defaults for NTYPES do not point to a valid git repository at $repourl"
+repo_exists SNCSEQ || die "Defaults for SNCSEQ do not point to a valid git repository at $repourl"
+repo_exists STREAM || die "Defaults for STREAM do not point to a valid git repository at $repourl"
+repo_exists ASYN || die "Defaults for STREAM do not point to a valid git repository at $repourl"
+repo_exists STD || die "Defaults for STD do not point to a valid git repository at $repourl"
+repo_exists CALC || die "Defaults for CALC do not point to a valid git repository at $repourl"
+repo_exists AUTOSAVE || die "Defaults for AUTOSAVE do not point to a valid git repository at $repourl"
+repo_exists BUSY || die "Defaults for BUSY do not point to a valid git repository at $repourl"
+repo_exists SSCAN || die "Defaults for SSCAN do not point to a valid git repository at $repourl"
+repo_exists IOCSTATS || die "Defaults for IOCSTATS do not point to a valid git repository at $repourl"
+
+# test update_release_local()
+######################################################################
+
+echo "Testing updating the RELEASE.local file"
+
+release_local=$CACHEDIR/RELEASE.local
+
+rm -f $release_local
+
+# Set a module
+update_release_local MOD1 /tmp/mod1
+updated_line="MOD1=/tmp/mod1"
+grep -q "MOD1=" $release_local || die "Line for MOD1 not added to RELEASE.local"
+existing_line=$(grep "MOD1=" $release_local)
+[ "${existing_line}" = "${updated_line}" ] || die "Wrong line for MOD1 in RELEASE.local (expected=\"$updated_line\" found=\"$existing_line\")"
+
+# Set base
+update_release_local EPICS_BASE /tmp/base
+updated_line="EPICS_BASE=/tmp/base"
+grep -q "EPICS_BASE=" $release_local || die "Line for EPICS_BASE not added to RELEASE.local"
+
+# Set another module
+update_release_local MOD2 /tmp/mod2
+updated_line="MOD2=/tmp/mod2"
+grep -q "MOD2=" $release_local || die "Line for MOD2 not added to RELEASE.local"
+existing_line=$(grep "MOD2=" $release_local)
+[ "${existing_line}" = "${updated_line}" ] || die "Wrong line for MOD2 in RELEASE.local (expected=\"$updated_line\" found=\"$existing_line\")"
+tail -n 1 $release_local | grep -q "EPICS_BASE=" || die "Line for EPICS_BASE not moved to the end of RELEASE.local"
+
+# Update a module
+update_release_local MOD1 /tmp/mod1b
+updated_line="MOD1=/tmp/mod1b"
+grep -q "MOD1=" $release_local || die "Line for MOD1 not present in RELEASE.local"
+existing_line=$(grep "MOD1=" $release_local)
+[ "${existing_line}" = "${updated_line}" ] || die "Wrong line for MOD1 in RELEASE.local (expected=\"$updated_line\" found=\"$existing_line\")"
+head -n 1 $release_local | grep -q "MOD1=" || die "Line for MOD1 not at the top of RELEASE.local"
+tail -n 1 $release_local | grep -q "EPICS_BASE=" || die "Line for EPICS_BASE not moved to the end of RELEASE.local"
+
+# Check that RELEASE.local only contains variable settings
+[ $(grep -v -c '[^ =]*=.*' $release_local) -ne 0 ] && die "RELEASE.local contains invalid lines"
+
+rm -f $release_local
+
+# test add_dependency()
+######################################################################
+
+echo "Testing adding a specific commit (branch or tag) of a dependency"
+
+hash_3_15_6="ce7943fb44beb22b453ddcc0bda5398fadf72096"
+location=$CACHEDIR/base-R3.15.6
+
+# CAREFUL: order of the following check matters (speeds up the test)
+
+# dependency does not exist in the cache
+rm -fr $location
+add_dependency BASE R3.15.6
+[ -e $location/LICENSE ] || die "Missing dependency was not checked out"
+BUILT=$(cat "$location/built")
+[ "$BUILT" != "$hash_3_15_6" ] && die "Wrong commit of dependency checked out (expected=\"$hash_3_15_6\" found=\"$BUILT\")"
+
+# up-to-date dependency does exist in the cache
+( cd $CACHEDIR; git clone --quiet --depth 5 --recursive --branch R3.15.6 https://github.com/epics-base/epics-base.git base-R3.15.6 )
+rm -f $location/LICENSE
+add_dependency BASE R3.15.6
+[ -e $location/LICENSE ] && die "Existing correct dependency was checked out on top"
+
+# dependency in the cache is outdated
+echo "nottherighthash" > "$location/built"
+add_dependency BASE R3.15.6
+[ -e $location/LICENSE ] || die "Outdated dependency was not checked out"
+BUILT=$(cat "$location/built")
+[ "$BUILT" != "$hash_3_15_6" ] && die "Wrong commit of dependency checked out (expected=\"$hash_3_15_6\" found=\"$BUILT\")"
+
+rm -fr $location
--- a/travis/.travis.yml.example-full
+++ b/travis/.travis.yml.example-full
@@ -1,39 +1,62 @@
-# .travis.xml for use with EPICS Base ci-scripts
+# .travis.yml for use with EPICS Base ci-scripts
 # (see: https://github.com/epics-base/ci-scripts)

+# This is YAML - indentation levels are crucial
+
 language: cpp
 compiler: gcc
 dist: xenial

+cache:
+  directories:
+  - $HOME/.cache
+
+env:
+  global:
+    - SETUP_PATH=.ci-local:.ci
+
 addons:
  apt:
    packages:
+    # for all EPICS builds
    - libreadline6-dev
    - libncurses5-dev
    - perl
+    # for clang compiler
    - clang
+    # for mingw builds (32bit and 64bit)
    - g++-mingw-w64-i686
+    - g++-mingw-w64-x86-64
+    # for RTEMS cross builds
    - qemu-system-x86

 install:
-  - ./.ci/travis-prepare.sh
+  - ./.ci/travis/prepare.sh

 script:
-  - ./.ci/travis-build.sh
+  - ./.ci/travis/build.sh

 # If you need to do more during install and build,
 # add a local directory to your module and do e.g.
-#  - ./.ci-local/travis-install-extras.sh
+#  - ./.ci-local/travis/install-extras.sh

 # Define build jobs

 # Well-known variables to use
-# BASE     branch or release tag name of the EPICS Base to use
+# SET      source setup file
 # EXTRA    content will be added to make command line
 # STATIC   set to YES for static build (default: NO)
 # TEST     set to NO to skip running the tests (default: YES)
+# VV       set to make build scripts verbose (default: unset)

-matrix:
+# Usually from setup files, but may be specified or overridden
+#  on a job line
+# MODULES  list of dependency modules
+# BASE     branch or release tag name of the EPICS Base to use
+# <MODULE> branch or release tag for a specific module
+# ...      see README for setup file syntax description
+
+jobs:
  include:

 # Different configurations of default gcc and clang
@@ -56,7 +79,7 @@ matrix:
  - env: BASE=7.0 EXTRA="CMD_CXXFLAGS=-std=c++11"
    dist: trusty

-# Cross-compilation to Windows using MinGW and WINE
+# Cross-compilations to Windows using MinGW and WINE
    
  - env: BASE=7.0 WINE=32 TEST=NO STATIC=YES
    compiler: mingw
@@ -70,7 +93,7 @@ matrix:

  - env: BASE=7.0 RTEMS=4.9 TEST=NO

-# Other gcc versions (adding as an extra package)
+# Other gcc versions (added as an extra package)

  - env: BASE=7.0
    compiler: gcc-6
@@ -85,8 +108,4 @@ matrix:
  - env: BASE=7.0
    os: osx
    compiler: clang
-
-# All above jobs can be defined for other branches or releases of EPICS Base
-# by setting BASE to the branch name or release tag name, e.g.
-# BASE=3.15      (to use the 3.15 branch of Base)
-# BASE=R7.0.3    (to use the 7.0.3 release of Base)
+    addons: { homebrew: { packages: ["re2c"], update: true } }
--- a/travis/.travis.yml.example-mini
+++ b/travis/.travis.yml.example-mini
@@ -15,14 +15,14 @@ addons:
    - perl

 install:
-  - ./.ci/travis-prepare.sh
+  - ./.ci/travis/prepare.sh

 script:
-  - ./.ci/travis-build.sh
+  - ./.ci/travis/build.sh

 # Build using default gcc for Base branches 7.0 and 3.15

-matrix:
+jobs:
  include:
  - env: BASE=7.0
  - env: BASE=3.15
--- a/travis/Add-RTEMS-pc368-qemu-target.patch
+++ b/travis/Add-RTEMS-pc368-qemu-target.patch
@@ -0,0 +1,77 @@
+From 00ee7bf7d3618c748491c88742c011a8353abeba Mon Sep 17 00:00:00 2001
+From: Andrew Johnson <anj@anl.gov>
+Date: Wed, 24 Oct 2018 14:27:15 -0500
+Subject: [PATCH] Add RTEMS-pc368-qemu target, use in Travis-CI builds
+
+---
+ configure/os/CONFIG.Common.RTEMS-pc386-qemu      | 11 +++++++++++
+ configure/os/CONFIG_SITE.Common.RTEMS-pc386      |  5 -----
+ configure/os/CONFIG_SITE.Common.RTEMS-pc386-qemu |  9 +++++++++
+ src/libCom/RTEMS/Makefile                        |  2 +-
+ src/tools/makeTestfile.pl                        |  2 +-
+ 6 files changed, 24 insertions(+), 10 deletions(-)
+ create mode 100644 configure/os/CONFIG.Common.RTEMS-pc386-qemu
+ delete mode 100644 configure/os/CONFIG_SITE.Common.RTEMS-pc386
+ create mode 100644 configure/os/CONFIG_SITE.Common.RTEMS-pc386-qemu
+
+diff --git a/configure/os/CONFIG.Common.RTEMS-pc386-qemu b/configure/os/CONFIG.Common.RTEMS-pc386-qemu
+new file mode 100644
+index 000000000..684f01a19
+--- /dev/null
+++ b/configure/os/CONFIG.Common.RTEMS-pc386-qemu
+@@ -0,0 +1,11 @@
+# CONFIG.Common.RTEMS-pc386-qemu
+#
+# Definitions for the RTEMS-pc386-qemu target
+# Site-specific overrides go in CONFIG_SITE.Common.RTEMS-pc386-qemu
+#
+#-------------------------------------------------------
+
+# Include definitions from RTEMS-pc386
+include $(CONFIG)/os/CONFIG.Common.RTEMS-pc386
+
+RTEMS_QEMU_FIXUPS = YES
+diff --git a/configure/os/CONFIG_SITE.Common.RTEMS-pc386-qemu b/configure/os/CONFIG_SITE.Common.RTEMS-pc386-qemu
+new file mode 100644
+index 000000000..027dcf4ab
+--- /dev/null
+++ b/configure/os/CONFIG_SITE.Common.RTEMS-pc386-qemu
+@@ -0,0 +1,9 @@
+# CONFIG_SITE.Common.RTEMS-pc386-qemu
+#
+# Site-specific overrides for the RTEMS-pc386-qemu target
+#
+
+# If you're building this architecture you _probably_ want to
+# run the tests for it under QEMU, but if not you can turn
+# them off here by commenting out this line:
+CROSS_COMPILER_RUNTEST_ARCHS += RTEMS-pc386-qemu
+diff --git a/src/libCom/RTEMS/Makefile b/src/libCom/RTEMS/Makefile
+index 2f12b7bf0..22a92733c 100644
+--- a/src/libCom/RTEMS/Makefile
+++ b/src/libCom/RTEMS/Makefile
+@@ -24,7 +24,7 @@ rtemsCom_SRCS += epicsRtemsInitHookPre.c
+ rtemsCom_SRCS += epicsRtemsInitHookPost.c
+ rtemsCom_SRCS += epicsMemFs.c
+ 
+-ifeq ($(T_A),RTEMS-pc386)
+ifeq ($(RTEMS_BSP),pc386)
+ rtemsCom_SRCS += ne2kpci.c
+ endif
+ 
+diff --git a/src/tools/makeTestfile.pl b/src/tools/makeTestfile.pl
+index 73f522034..fb431fe7a 100644
+--- a/src/tools/makeTestfile.pl
+++ b/src/tools/makeTestfile.pl
+@@ -37,7 +37,7 @@ if( $TA =~ /^win32-x86/ && $HA !~ /^win/ ) {
+   $exec = "wine64 $exe";
+ 
+ # Run pc386 test harness w/ QEMU
+-} elsif( $TA =~ /^RTEMS-pc386$/ ) {
+} elsif( $TA =~ /^RTEMS-pc386-qemu$/ ) {
+   $exec = "qemu-system-i386 -m 64 -no-reboot -serial stdio -display none -net nic,model=ne2k_pci -net user,restrict=yes -kernel $exe";
+ 
+ # Explicitly fail for other RTEMS targets
+-- 
+2.21.0.windows.1
+
--- a/travis/README.md
+++ b/travis/README.md
@@ -0,0 +1,45 @@
+# Travis-CI Scripts for EPICS Modules
+
+## Features
+
+ - Use different compilers (gcc, clang)
+ - Use different gcc versions
+ - Cross-compile for Windows 32bit and 64bit using MinGW and WINE
+ - Cross-compile for RTEMS 4.9 and 4.10
+ - Compile on MacOS
+ - Released versions of dependencies are cached (for faster builds)
+
+## How to Use these Scripts
+
+ 1. Get an account on [Travis-CI](https://travis-ci.org/), connect
+    it to your GitHub account and activate your support module's
+    repository. For more details, please refer to the
+    [Travis-CI Tutorial](https://docs.travis-ci.com/user/tutorial/).
+    Make sure to use `travis-ci.org` and not their `.com` site.
+
+ 2. Add the ci-scripts respository as a Git Submodule
+    (see [README](../README.md) one level above).
+
+ 3. Add settings files defining which dependencies in which versions
+    you want to build against
+    (see [README](../README.md) one level above).
+
+ 4. Create a Travis configuration by copying one of the examples into
+    the root directory of your module.
+    ```
+    $ cp .ci/travis/.travis.yml.example-full .travis.yml
+    ```
+	
+ 5. Edit the `.travis.yml` configuration to include the jobs you want
+    Travis to run.
+
+    Build jobs are declared in the list following the `jobs: include:`
+    declaration. Each element (starting with `-` in column 3) defines the
+    settings for one build job. `env:` controls the setting of environment
+    variables,`dist:` specifies the Linux distribution,
+    `os:` the operating system.
+    Also see the comments in the examples for more hints, and the Travis-CI
+    documentation for more options and more details.
+	
+ 6. Push your changes and check
+    [travis-ci.org](https://travis-ci.org/) for your build results.
--- a/travis/build.sh
+++ b/travis/build.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+set -e
+
+# Set VV in .travis.yml to make scripts verbose
+[ "$VV" ] && set -x
+
+CACHEDIR="$HOME/.cache"
+
+eval $(grep "EPICS_BASE=" ${CACHEDIR}/RELEASE.local)
+export EPICS_BASE
+
+[ -z "$EPICS_HOST_ARCH" -a -f $EPICS_BASE/src/tools/EpicsHostArch.pl ] && EPICS_HOST_ARCH=$(perl $EPICS_BASE/src/tools/EpicsHostArch.pl)
+[ -z "$EPICS_HOST_ARCH" -a -f $EPICS_BASE/startup/EpicsHostArch.pl ] && EPICS_HOST_ARCH=$(perl $EPICS_BASE/startup/EpicsHostArch.pl)
+export EPICS_HOST_ARCH
+
+make -j2 $EXTRA
+
+if [ "$TEST" != "NO" ]
+then
+  make tapfiles
+  make -s test-results
+fi
--- a/travis/prepare.sh
+++ b/travis/prepare.sh
@@ -0,0 +1,204 @@
+#!/bin/bash
+set -e
+
+# Set VV in .travis.yml to make scripts verbose
+[ "$VV" ] && set -x
+
+# Perl version of "readlink -f" (which MacOS does not provide)
+readlinkf() { perl -MCwd -e 'print Cwd::abs_path shift' "$1"; }
+
+SETUP_DIRS=$(echo $SETUP_PATH | tr ":" "\n")
+
+SCRIPTDIR=$(dirname $(readlinkf $0))
+CURDIR="$PWD"
+CACHEDIR="$HOME/.cache"
+
+# source functions
+. $SCRIPTDIR/utils.sh
+
+# Load settings
+# -------------
+
+fold_start load.settings "Loading settings"
+
+# load default settings for well-known modules
+source_set defaults
+
+# source configured settings
+[ -z "${SET+x}" ] || source_set $SET
+
+fold_end load.settings
+
+# Check out dependencies
+# ----------------------
+
+fold_start check.out.dependencies "Checking/cloning dependencies"
+
+for mod in BASE $MODULES
+do
+  mod_uc=$(echo $mod | tr 'a-z' 'A-Z')
+  eval add_dependency $mod_uc \${${mod_uc}:=master}
+done
+[ -e ./configure ] && cp ${CACHEDIR}/RELEASE.local ./configure/RELEASE.local
+
+fold_end check.out.dependencies
+
+# Set up compiler
+# ---------------
+
+fold_start set.up.epics_build "Setting up EPICS build system"
+
+eval $(grep "EPICS_BASE=" ${CACHEDIR}/RELEASE.local)
+export EPICS_BASE
+echo "EPICS_BASE=$EPICS_BASE"
+
+[ -z "$EPICS_HOST_ARCH" -a -f $EPICS_BASE/src/tools/EpicsHostArch.pl ] && EPICS_HOST_ARCH=$(perl $EPICS_BASE/src/tools/EpicsHostArch.pl)
+[ -z "$EPICS_HOST_ARCH" -a -f $EPICS_BASE/startup/EpicsHostArch.pl ] && EPICS_HOST_ARCH=$(perl $EPICS_BASE/startup/EpicsHostArch.pl)
+export EPICS_HOST_ARCH
+echo "EPICS_HOST_ARCH=$EPICS_HOST_ARCH"
+
+if echo ${modules_to_compile} | grep -q "$EPICS_BASE"
+then
+
+  # requires wine and g++-mingw-w64-i686
+  if [ "$WINE" = "32" ]
+  then
+    echo "Cross mingw32"
+    sed -i -e '/CMPLR_PREFIX/d' $EPICS_BASE/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw
+    cat << EOF >> $EPICS_BASE/configure/os/CONFIG_SITE.linux-x86.win32-x86-mingw
+CMPLR_PREFIX=i686-w64-mingw32-
+EOF
+    cat << EOF >> $EPICS_BASE/configure/CONFIG_SITE
+CROSS_COMPILER_TARGET_ARCHS+=win32-x86-mingw
+EOF
+
+  elif [ "$WINE" = "64" ]
+  then
+    echo "Cross mingw64"
+    sed -i -e '/CMPLR_PREFIX/d' $EPICS_BASE/configure/os/CONFIG_SITE.linux-x86.windows-x64-mingw
+    cat << EOF >> $EPICS_BASE/configure/os/CONFIG_SITE.linux-x86.windows-x64-mingw
+CMPLR_PREFIX=x86_64-w64-mingw32-
+EOF
+    cat << EOF >> $EPICS_BASE/configure/CONFIG_SITE
+CROSS_COMPILER_TARGET_ARCHS+=windows-x64-mingw
+EOF
+  fi
+
+  if [ "$STATIC" = "YES" ]
+  then
+    echo "Build static libraries/executables"
+    cat << EOF >> $EPICS_BASE/configure/CONFIG_SITE
+SHARED_LIBRARIES=NO
+STATIC_BUILD=YES
+EOF
+  fi
+
+  HOST_CCMPLR_NAME=`echo "$TRAVIS_COMPILER" | sed -E 's/^([[:alpha:]][^-]*(-[[:alpha:]][^-]*)*)+(-[0-9\.]+)?$/\1/g'`
+  HOST_CMPLR_VER_SUFFIX=`echo "$TRAVIS_COMPILER" | sed -E 's/^([[:alpha:]][^-]*(-[[:alpha:]][^-]*)*)+(-[0-9\.]+)?$/\3/g'`
+  HOST_CMPLR_VER=`echo "$HOST_CMPLR_VER_SUFFIX" | cut -c 2-`
+
+  case "$HOST_CCMPLR_NAME" in
+  clang)
+    echo "Host compiler is clang"
+    HOST_CPPCMPLR_NAME=$(echo "$HOST_CCMPLR_NAME" | sed 's/clang/clang++/g')
+    cat << EOF >> $EPICS_BASE/configure/os/CONFIG_SITE.Common.$EPICS_HOST_ARCH
+GNU         = NO
+CMPLR_CLASS = clang
+CC          = ${HOST_CCMPLR_NAME}$HOST_CMPLR_VER_SUFFIX
+CCC         = ${HOST_CPPCMPLR_NAME}$HOST_CMPLR_VER_SUFFIX
+EOF
+
+    # hack
+    sed -i -e 's/CMPLR_CLASS = gcc/CMPLR_CLASS = clang/' $EPICS_BASE/configure/CONFIG.gnuCommon
+
+    ${HOST_CCMPLR_NAME}$HOST_CMPLR_VER_SUFFIX --version
+    ;;
+  gcc)
+    echo "Host compiler is GCC"
+    HOST_CPPCMPLR_NAME=$(echo "$HOST_CCMPLR_NAME" | sed 's/gcc/g++/g')
+    cat << EOF >> $EPICS_BASE/configure/os/CONFIG_SITE.Common.$EPICS_HOST_ARCH
+CC          = ${HOST_CCMPLR_NAME}$HOST_CMPLR_VER_SUFFIX
+CCC         = ${HOST_CPPCMPLR_NAME}$HOST_CMPLR_VER_SUFFIX
+EOF
+
+    ${HOST_CCMPLR_NAME}$HOST_CMPLR_VER_SUFFIX --version
+    ;;
+  *)
+    echo "Host compiler is default"
+    gcc --version
+    ;;
+  esac
+
+  cat <<EOF >> $EPICS_BASE/configure/CONFIG_SITE
+USR_CPPFLAGS += $USR_CPPFLAGS
+USR_CFLAGS += $USR_CFLAGS
+USR_CXXFLAGS += $USR_CXXFLAGS
+EOF
+
+  # set RTEMS to eg. "4.9" or "4.10"
+  # requires qemu, bison, flex, texinfo, install-info
+  if [ -n "$RTEMS" ]
+  then
+    echo "Cross RTEMS${RTEMS} for pc386"
+    sed -i -e '/^RTEMS_VERSION/d' -e '/^RTEMS_BASE/d' $EPICS_BASE/configure/os/CONFIG_SITE.Common.RTEMS
+    cat << EOF >> $EPICS_BASE/configure/os/CONFIG_SITE.Common.RTEMS
+RTEMS_VERSION=$RTEMS
+RTEMS_BASE=$HOME/.rtems
+EOF
+    cat << EOF >> $EPICS_BASE/configure/CONFIG_SITE
+CROSS_COMPILER_TARGET_ARCHS += RTEMS-pc386-qemu
+EOF
+  fi
+
+else
+  echo "${ANSI_GREEN}EPICS build system already set up (Base was loaded from cache)${ANSI_RESET}"
+fi
+
+# Download RTEMS cross compiler
+if [ -n "$RTEMS" ]
+then
+  echo "Downloading RTEMS${RTEMS} cross compiler for pc386"
+  curl -L "https://github.com/mdavidsaver/rsb/releases/download/20171203-${RTEMS}/i386-rtems${RTEMS}-trusty-20171203-${RTEMS}.tar.bz2" \
+  | tar -C / -xmj
+fi
+
+fold_end set.up.compiler
+
+echo "\$ make --version"
+make --version
+
+# Build required dependencies
+# ---------------------------
+
+fold_start build.dependencies "Build missing/outdated dependencies"
+
+[ "$VV" ] && silent="-s" || silent=
+
+[ -z "$modules_to_compile" ] && echo "${ANSI_GREEN}All dependency modules are up-to-date (nothing to do)${ANSI_RESET}"
+
+for module in ${modules_to_compile}
+do
+  eval name=\${module#${CACHEDIR}/}
+  fold_start build.$name "Build $name"
+  make -j2 $silent -C $module $EXTRA
+  fold_end build.$name
+done
+
+fold_end build.dependencies
+
+echo "${ANSI_BLUE}Dependency module information${ANSI_RESET}"
+
+echo "Module     Tag          Binaries    Commit"
+echo "-----------------------------------------------------------------------------------"
+for mod in base $MODULES
+do
+  mod_uc=$(echo $mod | tr 'a-z' 'A-Z')
+  eval tag=\${${mod_uc}}
+  eval dir=${CACHEDIR}/\${${mod_uc}_DIRNAME}-$tag
+  echo "$modules_to_compile" | grep -q "$dir" && stat="rebuilt" || stat="from cache"
+  commit=$(git -C $dir log -n1 --oneline)
+  printf "%-10s %-12s %-11s %s\n" "$mod" "$tag" "$stat" "$commit"
+done
+
+echo "${ANSI_BLUE}Contents of RELEASE.local${ANSI_RESET}"
+cat ${CACHEDIR}/RELEASE.local
--- a/travis/utils.sh
+++ b/travis/utils.sh
@@ -0,0 +1,204 @@
+# Utility functions for Travis scripts in ci-scripts
+#
+# This file is sourced by the executable scripts
+
+# Portable version of 'sed -i'  (that MacOS doesn't provide)
+
+# sedi (cmd, file)
+# Do the equivalent of "sed -i cmd file"
+sedi () {
+  cat $2 | sed "$1" > $2.tmp$$; mv -f $2.tmp$$ $2
+}
+
+# Setup ANSI Colors
+export ANSI_RED="\033[31;1m"
+export ANSI_GREEN="\033[32;1m"
+export ANSI_YELLOW="\033[33;1m"
+export ANSI_BLUE="\033[34;1m"
+export ANSI_RESET="\033[0m"
+export ANSI_CLEAR="\033[0K"
+
+# Travis log fold control
+# from https://github.com/travis-ci/travis-rubies/blob/build/build.sh
+
+fold_start() {
+  echo -en "travis_fold:start:$1\\r${ANSI_YELLOW}$2${ANSI_RESET}"
+}
+
+fold_end() {
+  echo -en "travis_fold:end:$1\\r"
+}
+
+# source_set(settings)
+#
+# Source a settings file (extension .set) found in the SETUP_DIRS path
+# May be called recursively (from within a settings file)
+declare -a SEEN_SETUPS
+source_set() {
+  local set_file=${1//[$'\r']}
+  local set_dir
+  local found=0
+  if [ -z "${SETUP_DIRS}" ]
+  then
+    echo "${ANSI_RED}Search path for setup files (SETUP_PATH) is empty${ANSI_RESET}"
+    [ "$UTILS_UNITTEST" ] || exit 1
+  fi
+  for set_dir in ${SETUP_DIRS}
+  do
+    if [ -e $set_dir/$set_file.set ]
+    then
+      if [[ " ${SEEN_SETUPS[@]} " =~ " $set_dir/$set_file.set " ]]
+      then
+        echo "Ignoring already included setup file $set_dir/$set_file.set"
+        return
+      fi
+      SEEN_SETUPS+=($set_dir/$set_file.set)
+      echo "Loading setup file $set_dir/$set_file.set"
+      local line
+      while read -r line
+      do
+        [ -z "$line" ] && continue
+        echo $line | grep -q "^#" && continue
+        if echo $line | grep -q "^include\W"
+        then
+          source_set $(echo $line | awk '{ print $2 }')
+          continue
+        fi
+        if echo "$line" | grep -q "^\w\+="
+        then
+          IFS== read var value <<< "${line//[$'\r']}"
+          value=$(sed "s/^\(\"\)\(.*\)\1\$/\2/g" <<< "$value") # remove surrounding quotes
+          eval [ "\${$var}" ] || eval "$var=\$value"
+        fi
+      done < $set_dir/$set_file.set
+      found=1
+      break
+    fi
+  done
+  if [ $found -eq 0 ]
+  then
+    echo "${ANSI_RED}Setup file $set_file.set does not exist in SETUP_DIRS search path ($SETUP_DIRS)${ANSI_RESET}"
+    [ "$UTILS_UNITTEST" ] || exit 1
+  fi
+}
+
+# update_release_local(varname, place)
+#   varname   name of the variable to set in RELEASE.local
+#   place     place (absolute path) of where variable should point to
+#
+# Manipulate RELEASE.local in the cache location:
+# - replace "$varname=$place" line if it exists and has changed
+# - otherwise add "$varname=$place" line and possibly move EPICS_BASE=... line to the end
+update_release_local() {
+  local var=$1
+  local place=$2
+  local release_local=${CACHEDIR}/RELEASE.local
+  local updated_line="${var}=${place}"
+
+  local ret=0
+  [ -e ${release_local} ] && grep -q "${var}=" ${release_local} || ret=$?
+  if [ $ret -eq 0 ]
+  then
+    existing_line=$(grep "${var}=" ${release_local})
+    if [ "${existing_line}" != "${updated_line}" ]
+    then
+      sedi "s|${var}=.*|${var}=${place}|g" ${release_local}
+    fi
+  else
+    echo "$var=$place" >> ${release_local}
+    ret=0
+    grep -q "EPICS_BASE=" ${release_local} || ret=$?
+    if [ $ret -eq 0 ]
+    then
+      base_line=$(grep "EPICS_BASE=" ${release_local})
+      sedi '\|EPICS_BASE=|d' ${release_local}
+      echo ${base_line} >> ${release_local}
+    fi
+  fi
+}
+
+# add_dependency(dep, tag)
+#
+# Add a dependency to the cache area:
+# - check out (recursive if configured) in the CACHE area unless it already exists and the
+#   required commit has been built
+# - Defaults:
+#   $dep_DIRNAME = lower case ($dep)
+#   $dep_REPONAME = lower case ($dep)
+#   $dep_REPOURL = GitHub / $dep_REPOOWNER (or $REPOOWNER or epics-modules) / $dep_REPONAME .git
+#   $dep_VARNAME = $dep
+#   $dep_DEPTH = 5
+#   $dep_RECURSIVE = 1/YES (0/NO to for a flat clone)
+# - Add $dep_VARNAME line to the RELEASE.local file in the cache area (unless already there)
+# - Add full path to $modules_to_compile
+add_dependency() {
+  curdir="$PWD"
+  DEP=$1
+  TAG=$2
+  dep_lc=$(echo $DEP | tr 'A-Z' 'a-z')
+  eval dirname=\${${DEP}_DIRNAME:=${dep_lc}}
+  eval reponame=\${${DEP}_REPONAME:=${dep_lc}}
+  eval repourl=\${${DEP}_REPOURL:="https://github.com/\${${DEP}_REPOOWNER:=${REPOOWNER:-epics-modules}}/${reponame}.git"}
+  eval varname=\${${DEP}_VARNAME:=${DEP}}
+  eval recursive=\${${DEP}_RECURSIVE:=1}
+  recursive=$(echo $recursive | tr 'A-Z' 'a-z')
+  [ "$recursive" != "0" -a "$recursive" != "no" ] && recurse="--recursive"
+
+  # determine if $DEP points to a valid release or branch
+  if ! git ls-remote --quiet --exit-code --refs $repourl "$TAG" > /dev/null 2>&1
+  then
+    echo "${ANSI_RED}$TAG is neither a tag nor a branch name for $DEP ($repourl)${ANSI_RESET}"
+    [ "$UTILS_UNITTEST" ] || exit 1
+  fi
+
+  if [ -e $CACHEDIR/$dirname-$TAG ]
+  then
+    [ -e $CACHEDIR/$dirname-$TAG/built ] && BUILT=$(cat $CACHEDIR/$dirname-$TAG/built) || BUILT="never"
+    HEAD=$(cd "$CACHEDIR/$dirname-$TAG" && git log -n1 --pretty=format:%H)
+    if [ "$HEAD" != "$BUILT" ]
+    then
+      rm -fr $CACHEDIR/$dirname-$TAG
+    else
+      echo "Found $TAG of dependency $DEP in $CACHEDIR/$dirname-$TAG"
+    fi
+  fi
+
+  if [ ! -e $CACHEDIR/$dirname-$TAG ]
+  then
+    cd $CACHEDIR
+    eval depth=\${${DEP}_DEPTH:-"-1"}
+    case ${depth} in
+    -1 )
+      deptharg="--depth 5"
+      ;;
+    0 )
+      deptharg=""
+      ;;
+    * )
+      deptharg="--depth $depth"
+      ;;
+    esac
+    echo "Cloning $TAG of dependency $DEP into $CACHEDIR/$dirname-$TAG"
+    git clone --quiet $deptharg $recurse --branch "$TAG" $repourl $dirname-$TAG
+    ( cd $dirname-$TAG && git log -n1 )
+    modules_to_compile="${modules_to_compile} $CACHEDIR/$dirname-$TAG"
+    # run hook
+    eval hook="\${${DEP}_HOOK}"
+    if [ "$hook" ]
+    then
+      if [ -x "$curdir/$hook" ]
+      then
+        echo "Running hook $hook in $CACHEDIR/$dirname-$TAG"
+        ( cd $CACHEDIR/$dirname-$TAG; "$curdir/$hook" )
+      else
+        echo "${ANSI_RED}Hook script $hook is not executable or does not exist.${ANSI_RESET}"
+        exit 1
+      fi
+    fi
+    HEAD=$(cd "$CACHEDIR/$dirname-$TAG" && git log -n1 --pretty=format:%H)
+    echo "$HEAD" > "$CACHEDIR/$dirname-$TAG/built"
+    cd "$curdir"
+  fi
+
+  update_release_local ${varname} $CACHEDIR/$dirname-$TAG
+}