https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104006
--- Comment #27 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:ac6a1181209b756882f89cdba6128565fad1a56e commit r12-6580-gac6a1181209b756882f89cdba6128565fad1a56e Author: Jakub Jelinek <ja...@redhat.com> Date: Fri Jan 14 12:11:00 2022 +0100 libgfortran: Partly revert my r12-6498 change to fix Solaris build [PR104006] In r12-6498 I've added $(version_dep) to BUILT_SOURCES, previously version_dep on Linux used to be a file in $(srcdir), but with my changes it is a generated file in the object directory (preprocessed version of the $(srcdir) file) and I thought generated files belong to BUILT_SOURCES so that they are cleaned up etc. For Linux that is fine, but it broke parallel builds on Solaris. BUILT_SOURCES is a special variable for automake where automake ensures that for make all, make check and make install all those $(BUILT_SOURCES) are generated before actually starting building in parallel the various object files. That way we can avoid hacks like: $(patsubst %.F90,%.lo,$(notdir $(filter %.F90,$(prereq_SRC)))): kinds.inc c99_protos.inc $(patsubst %.c,%.lo,$(notdir $(filter %.c,$(prereq_SRC)))): kinds.h $(patsubst %.f90,%.lo,selected_real_kind.f90): selected_real_kind.inc $(patsubst %.f90,%.lo,selected_int_kind.f90): selected_int_kind.inc $(patsubst %.F90,%.lo,ieee_exceptions.F90): fpu-target.inc $(patsubst %.F90,%.lo,ieee_arithmetic.F90): fpu-target.inc ieee_exceptions.lo $(patsubst %.c,%.lo,fpu.c): fpu-target.h which makes those dependencies explicit but hides it from automake, so that it doesn't throw away its rules for those object files. On Solaris, $(version_dep) contains gfortran.ver and gfortran.ver-sun. gfortran.ver is like on Linux, it can be in $(BUILT_SOURCES), but unfortunately gfortran.ver-sun depends on all the object files being compiled already, so if gfortran.ver-sun appears in $(BUILT_SOURCES), the BUILT_SOURCES function of ensuring the generated files are generated before building object files is gone, almost everything is built before all-am is entered and there are no explicit dependencies that e.g. *.F90 files depend on kinds.inc etc. So, this change reverts that mistake and instead adds $(version_dep) to what is removed during make clean (clean-local in particular). 2022-01-14 Jakub Jelinek <ja...@redhat.com> PR libfortran/104006 * Makefile.am (BUILT_SOURCES): Don't include $(version_dep). (clean-local): Remove $(version_dep). * Makefile.in: Regenerated.
