Models and cdsrfm need dolphin symvers.  The code needs to look for either ix or px dolphin symvers.

We are assuming we would never have both installed, but in that case, the goal is to have px files overwrite ix files.

find_module_symvers has been changed to look for multiple module names.  It will return all symvers found among all the models.

Makefiles now honor symvers file locations if they are already specified in the environment.
This could cause problems if variables are unkowingly left defined.
A better option would be to override the variables on the command line
Variable names are changed to make it easier to derive them from module names.

Setting epics/util/Makefile.in to custom output dir and regenerating configure script for it, don't copy files that can cause race condition

 * work towards #335
 * modify find_module_symvers to user argparser and have a quiet option to make missing symvers files empty strings
 * update the src/epics/util/Makefile.in to pass the location of the rts cpu isolator symver file to feCodeGen.pl
 * update createKernelMakefile.pm to add the rts cpu isolator symvers file to the KBUILD_EXTRA_SYMBOLS for the module

Jameson Rollins authored 5 years ago and Rolf Bork committed 5 years ago

This makes discovery of the Module.symvers happen at model build time,
instead of at build tree creation/configuration.

A find_module_symvers script is included to find the Module.symvers
file, and it's used in the RCG Makefile to find module symvers files
at build time.

This reverts the top-level configure script changes from
8c01de98, restoring the configure
script and dropping the autoconf-generated configure step from the
build setup.

Closes #14 - Restore support for kernel module versioning
patches/kernel-4.19-cs/config-4.19.67-cs - change to MODVERSIONS=y
patches/kernel-4.19-cs/README - Update note on config file
-- changes for mbuf, gpstime symbol versions --
Update RCG autotools - remove configure, move configure.in to configure.ac
bootstrap - add to generate configure from configure.ac
configure.ac - rename from configure.in, add tests to find path to mbuf, gpstime
Module.symvers files - either /var/lib/dkms/$MODNAME/$MODVERS/$KVERS/$ARCH/
for DKMS package or /var/cache/$MODNAME from local build
src/drv/ExtraSymbols.symvers - Remove mbuf, gpstime symbols
src/drv/gpstime/Makefile - Add caching of Module.symvers in /var/cache/gpstime on install
src/drv/mbuf/Makefile - Add caching of Module.symvers in /var/cache/mbuf on install
src/epics/util/Makefile.in  - Add mbuf,gpstime Module.symvers paths
src/epics/util/feCodeGen.pl - Add KBUILD_EXTRA_SYMBOLS statements to front-end make file
-- changes to front-end kernel module symbol versions --
src/drv/ExtraSymbols.symvers - Remove need_to_load_IOP_first
src/epics/util/Makefile.in - Add caching of need_to_load_IOP_first symbol version, copy of cache for builds
src/epics/util/feCodeGen.pl - Add KBUILD_EXTRA_SYMBOLS for this

git-svn-id: https://redoubt.ligo-wa.caltech.edu/svn/advLigoRTS/trunk@2879 6dcd42c9-f523-4c6d-aada-af552506706e

git-svn-id: https://redoubt.ligo-wa.caltech.edu/svn/advLigoRTS/trunk@2600 6dcd42c9-f523-4c6d-aada-af552506706e

directory, like ../trunk and not /opt/rcg, for instance.


git-svn-id: https://redoubt.ligo-wa.caltech.edu/svn/advLigoRTS/trunk@2548 6dcd42c9-f523-4c6d-aada-af552506706e