libgomp: Fix up -static -fopenmp linking [PR109904]

When an OpenMP program with target regions is linked statically,
it fails to link on various arches (doesn't when using recent glibc
because it has libdl stuff in libc), because libgomp.a(target.o) uses
dlopen/dlsym/dlclose, but we aren't linking against -ldl (unless
user asked for that).  We already have libgomp.spec so that we
can supply extra libraries to link against in the -static case,
this patch adds -ldl to that if plugins are supported.

2023-05-19  Jakub Jelinek  <jakub@redhat.com>

	PR libgomp/109904
	* configure.ac (link_gomp): Include also $DL_LIBS.
	* configure: Regenerated.
This commit is contained in:
Jakub Jelinek 2023-05-19 10:13:14 +02:00
parent e82025df62
commit 9abc830247
2 changed files with 4 additions and 4 deletions

4
libgomp/configure vendored
View File

@ -16788,9 +16788,9 @@ fi
# which will force linkage against -lpthread (or equivalent for the system).
# That's not 100% ideal, but about the best we can do easily.
if test $enable_shared = yes; then
link_gomp="-lgomp %{static: $LIBS}"
link_gomp="-lgomp %{static: $LIBS${DL_LIBS:+ $DL_LIBS}}"
else
link_gomp="-lgomp $LIBS"
link_gomp="-lgomp $LIBS${DL_LIBS:+ $DL_LIBS}"
fi

View File

@ -398,9 +398,9 @@ fi
# which will force linkage against -lpthread (or equivalent for the system).
# That's not 100% ideal, but about the best we can do easily.
if test $enable_shared = yes; then
link_gomp="-lgomp %{static: $LIBS}"
link_gomp="-lgomp %{static: $LIBS${DL_LIBS:+ $DL_LIBS}}"
else
link_gomp="-lgomp $LIBS"
link_gomp="-lgomp $LIBS${DL_LIBS:+ $DL_LIBS}"
fi
AC_SUBST(link_gomp)