std99 pb within whereami

[alaingdl]

On a centos7 up-to-date, I have the problem :

[ 15%] Building C object src/CMakeFiles/whereami.dir/whereami/src/whereami.c.o
/home/alaingdl/GDL/gdl-1.0.2git230125/src/whereami/src/whereami.c: In function ‘wai_getModulePath’:
/home/alaingdl/GDL/gdl-1.0.2git230125/src/whereami/src/whereami.c:259:3: erreur: ‘for’ loop initial declarations are only allowed in C99 mode
   for (int r = 0; r < WAI_PROC_SELF_MAPS_RETRY; ++r)
   ^
/home/alaingdl/GDL/gdl-1.0.2git230125/src/whereami/src/whereami.c:259:3: note: use option -std=c99 or -std=gnu99 to compile your code

I don't have this problem on other OS

I not sure how to change/force flags because the flags (conservatives) in "whereami" are not the flags we may would like to use outside.

[slayoo]

@alaingdl Please check if this would help: #1497