diff --git a/.appveyor.yml b/.appveyor.yml
index 967752d..0fdbde4 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -86,6 +86,9 @@ environment:
     APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
   - CMP: vs2017
     APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+    EXTRA: EXTRA_DEF="extra"
+    EXTRA1: EXTRA1_DEF="extra 1"
+    EXTRA2: EXTRA2_DEF="extra 2"
   - CMP: vs2015
   - CMP: vs2013
   - CMP: vs2012
diff --git a/.travis.yml b/.travis.yml
index 43133a6..06a809a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -50,18 +50,20 @@ script:
 # 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)
+# SET         source setup file
+# ADD_MODULES extra modules (for a specific job)
+# EXTRA       content will be added to make command line
+# BCFG        build configuration (static/debug/static-debug;
+#             default: shared-optimized)
+# 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
+# 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:
@@ -96,7 +98,7 @@ jobs:
   - env: SET=test01 BCFG=static-debug
     dist: trusty
 
-  - env: SET=test01
+  - env: SET=test01 EXTRA="CMD_CXXFLAGS=-std=c++11"
   - env: SET=test01 BCFG=static
   - env: SET=test01 BCFG=debug
   - env: SET=test01 BCFG=static-debug
@@ -107,8 +109,12 @@ jobs:
   - env: SET=test01 BCFG=static-debug
     compiler: clang
 
-  - env: SET=test01
-    os: osx
+  - os: osx
+    env:
+      - SET=test01
+      - EXTRA=CMD_CFLAGS="-mmacosx-version-min=10.7"
+      - EXTRA1=CMD_CXXFLAGS="-mmacosx-version-min=10.7 -std=c++11 -stdlib=libc++"
+      - EXTRA2=CMD_LDXFLAGS="-mmacosx-version-min=10.7 -std=c++11 -stdlib=libc++"
     compiler: clang
 
   - env: SET=test01 BCFG=debug