pyDevSup working as a module in require system

GNUMakefile

@@ -0,0 +1,27 @@
+# This build the sinq extensions for the PSI EPICS setup
+include /ioc/tools/driver.makefile
+
+MODULE=pyDevSup
+LIBVERSION=koennecke
+BUILDCLASSES=Linux
+
+# See README.module for more instructions
+
+DBDS += pyIocApp/pyDevSup.dbd
+
+SOURCES += pyIocApp/setup.c
+SOURCES += devsupApp/src/dbapi.c
+SOURCES += devsupApp/src/dbdset.c
+SOURCES += devsupApp/src/dbfield.c
+SOURCES += devsupApp/src/dbrec.c
+SOURCES += devsupApp/src/utest.c
+#SOURCES += devsupApp/src/pyDevSupCommon_registerRecordDeviceDriver.cpp
+
+
+USR_CFLAGS += -I/usr/include/python3.6m -DHAVE_NUMPY 
+USR_CFLAGS += -DXEPICS_ARCH=\"RHEL7-x86_64\" -DXEPICS_BASE=\"/usr/local/epics\" 
+USR_CFLAGS += -DXPYDEV_BASE=\"$(INSTALL_LOCATION)\" -DPYDIR=\"python3.6\"
+USR_LDFLAGS += -L/usr/local/epics/base-3.14.12/lib/RHEL7-x86_64
+LIB_SYS_LIBS += python3.6m 
+#LIB_SYS_LIBS += python3.6m recIoc softDevIoc miscIoc rsrvIoc dbtoolsIoc asIoc dbIoc registryIoc dbStaticIoc
+# MISCS  would be the place to keep the stream device template files

README.module

@@ -0,0 +1,30 @@
+# pyDevSup as a module loadable via require
+
+pyDevSup is not you standard EPICS extension in that it tightly interacts with the 
+python interpreter. This causes some issues with Dirk Zimochs module system which 
+allows to load support modules through the require command. Most importantly, 
+reuire does not know about python and its modules at all. 
+
+
+The good news is that it can be made to work but requires a few manual steps.
+
+1) Build the pyDevSup extension in the normal EPICS way.
+
+2) This generates a pythonXX/$(EPICS_ARCH)/devsup directory. Copy this directory to
+   a safe place.
+
+3) Build the module using the GNUMakefile as normal and install it
+
+4) Copy the saved devsup directory in some place into pyDevSup's module hierarchy. 
+   For example: /ioc/modules/pyDevSup/koennecke/R3.14.12/lib/devsup
+
+5) In order to successfuly load pyDevSup with require the directory underneath 
+   where ypu placed pydevsup needs to be on the python path. For example:
+   /ioc/modules/pyDevSup/koennecke/R3.14.12/lib/
+
+With this, one can at least run the testmodule.cmd script and it workd at least 
+for me.
+
+Please use the module branch, I had to hack the initialisation of pyDevSup to make 
+it work as a module. 
+

devsupApp/src/dbapi.c

@@ -27,7 +27,7 @@
 
 initHookState pyInitLastState;
 
-extern int pyDevSupCommon_registerRecordDeviceDriver(DBBASE *pbase);
+/* extern int pyDevSupCommon_registerRecordDeviceDriver(DBBASE *pbase); */
 
 typedef struct {
     const initHookState state;
@@ -264,9 +264,11 @@ PyObject *py_iocInit(PyObject *unused, PyObject *args, PyObject *kws)
 static
 PyObject *py_pyDevSupCommon(PyObject *unused)
 {
+  /*
     Py_BEGIN_ALLOW_THREADS {
         pyDevSupCommon_registerRecordDeviceDriver(pdbbase);
     } Py_END_ALLOW_THREADS
+  */
 
     Py_RETURN_NONE;
 }

devsupApp/src/devsup/__init__.py

@@ -46,6 +46,10 @@ from ._dbapi import (EPICS_VERSION_STRING,
 __all__ = []
 
 def _init(iocMain=False):
+    _dbapi._dbd_setup()
+    return
+
+def _initOld(iocMain=False):
     if not iocMain:
         # we haven't read/register base.dbd
         _dbapi.dbReadDatabase(os.path.join(XEPICS_BASE, "dbd", "base.dbd"),

testApp/test6.py

@@ -19,7 +19,7 @@ class SumTable(PT.TableBase):
 
     @inputs.anynotvalid
     def inval(self):
-        print self.A.isvalid, self.B.isvalid
+        print(self.A.isvalid, self.B.isvalid)
         LOG.debug("%s.update inputs not valid", self.name)
         self.S.value = None
         self.S.notify()

testmodule.cmd

@@ -0,0 +1,27 @@
+#! /usr/local/bin/iocsh
+
+require pyDevSup, koennecke
+
+py "import logging"
+py "logging.basicConfig(level=logging.DEBUG)"
+
+py "import sys; sys.path.insert(0,'${PWD}/testApp')"
+py "print(sys.path)"
+
+#py "import devsup.hooks"
+#py "devsup.hooks.debugHooks()"
+
+py "import test2"
+py "test2.addDrv('AAAA')"
+py "test2.addDrv('BBBB')"
+
+py "import test6"
+py "test6.SumTable(name='tsum')"
+
+dbLoadRecords("db/test.db","P=md:")
+dbLoadRecords("db/test6.db","P=tst:,TNAME=tsum")
+
+iocInit()
+
+# Start Reference tracker
+#py "from devsup import disect; disect.periodic(10)"