Test and Bugfix: #include "config.h" with YAC at --prefix

Summary

Compiling a simple dummy program does not work and results in a compilation error, if I install YAC using --prefix=$YAC_INSTALL_DIR. I get the following error:

YAC/examples/toy_multi$ make
mpicc -std=gnu99 -O0 -g -I/home/benjamin/Programming/ebfm_dummy/.venv/include -I/home/benjamin/Software/yaxt/include  -I/home/benjamin/Programming/ebfm_dummy/.venv/include -I/home/benjamin/Software/yaxt/include  -c toy_multi_cube.c
In file included from /home/benjamin/Programming/ebfm_dummy/.venv/include/yac_utils.h:8,
                 from toy_multi_cube.c:13:
/home/benjamin/Programming/ebfm_dummy/.venv/include/yac_core.h:23:10: fatal error: config.h: No such file or directory
   23 | #include "config.h"
      |          ^~~~~~~~~~
compilation terminated.
make: *** [Makefile:44: toy_multi_cube.o] Error 1

I used the following to configure the build and install YAC (on Ubuntu 24.04):

cd YAC
mkdir build
../configure CC=mpicc FC=mpif90 --enable-mpi-checks --enable-silent-rules --enable-concurrent-mpi-tests --with-yaxt-root=$YAXT_INSTALL_DIR --prefix=$YAC_INSTALL_DIR CFLAGS="-g -Wall" FCFLAGS="-g -Wall -fimplicit-none" MPI_LAUNCH="mpirun --oversubscribe"
make install

This problem does not occur when running the examples from build -- presumably because config.h exists in this case.

Todos

• Extend CI to run into this failure; 6d065a71 is sensitive w.r.t the error.
• Implement fix (see below); bbb1c918 provides the fix described above.

Notes

The following change fixes the problem:

diff --git a/src/core/yac_types.h b/src/core/yac_types.h
index e98860b3..a3978e9c 100644
--- a/src/core/yac_types.h
+++ b/src/core/yac_types.h
@@ -9,7 +9,7 @@
 
 #include <stddef.h>
 
-#include "config.h"
+#include "yac_config.h"
 
 // Global index type for YAC
 typedef YAC_INT yac_int;

Related issues

• closes #146 (closed)

Checklist

• All code changes are covered by unit tests
• Code coverage did not deteriorate
• Code follows Style Guide
• Documentation updated, if necessary
• WIP: Manual running of configure/build jobs was successfull
• Update version info, if changes are worth mentioning (Develop section in doc/src/version_info.dox, add section if not yet included)