Experimental Physics and
Industrial Control System

Philipp Kampmann via Tech-talk <tech-talk at aps.anl.gov> · Tue, 20 Jul 2021 17:34:01 +0200

Dear EPICS-users,

I am relatively new to EPICS and in our project we would like to share
some software variables via EPICS. Therefore I implemented a first
version of channel access interface using the cadef.h header, which
works well in one program we are using, which uses only gcc to compile.

However, another program uses partially clang (as part of the
CERN-ROOT-libraries if someone is familiar) to compile, which gives me
the error:

In file included from
/home/philipp/software/EPICS/epics-base/include/cadef.h:40:
In file included from
/home/philipp/software/EPICS/epics-base/include/epicsThread.h:131:
In file included from
/home/philipp/software/EPICS/epics-base/include/epicsMutex.h:13:
In file included from
/home/philipp/software/EPICS/epics-base/include/epicsAssert.h:20:
In file included from
/home/philipp/software/EPICS/epics-base/include/compilerDependencies.h:19:
/home/philipp/software/EPICS/epics-base/include/compiler/gcc/compilerSpecific.h:24:5:
error: compiler/gcc/compilerSpecific.h is not for use with the clang
compiler

A corresponding "compiler/clang" path does not exist in my build. I
would like to compile epics headers with both, g++ and clang. Does
someone know if it works and how I can build EPICS with both compilers
supported?

I am using EPICS version 3.15 here.

Regards,

Philipp

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System