Generally link to libgomp for -ftree-parallelize-loops=*.

	gcc/
	* config/arc/arc.h (LINK_COMMAND_SPEC): For
	-ftree-parallelize-loops=*, link to libgomp and its dependencies.
	* config/ia64/hpux.h (LIB_SPEC): Likewise.
	* config/pa/pa-hpux11.h (LIB_SPEC): Likewise.
	* config/pa/pa64-hpux.h (LIB_SPEC): Likewise.
	* gcc.c (GOMP_SELF_SPECS): Update comment about libgomp's
	dependencies.
	libgomp/
	* libgomp.spec.in: Update comment about libgomp's dependencies.
	* configure.ac: Likewise.
	* configure: Regenerate.

From-SVN: r204517

10 files changed, 37 insertions, 13 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a4bb664..cfb6036 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,13 @@
+2013-11-07  Thomas Schwinge  <thomas@codesourcery.com>
+
+	* config/arc/arc.h (LINK_COMMAND_SPEC): For
+	-ftree-parallelize-loops=*, link to libgomp and its dependencies.
+	* config/ia64/hpux.h (LIB_SPEC): Likewise.
+	* config/pa/pa-hpux11.h (LIB_SPEC): Likewise.
+	* config/pa/pa64-hpux.h (LIB_SPEC): Likewise.
+	* gcc.c (GOMP_SELF_SPECS): Update comment about libgomp's
+	dependencies.
+
 2013-11-07  Jakub Jelinek  <jakub@redhat.com>
 
 	* tree-ssa-loop-niter.c: Include tree-ssanames.h.
diff --git a/gcc/config/arc/arc.h b/gcc/config/arc/arc.h
index 637f7b6..87908d4 100644
--- a/gcc/config/arc/arc.h
+++ b/gcc/config/arc/arc.h
@@ -174,7 +174,8 @@ along with GCC; see the file COPYING3.  If not see
     %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
     %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
     %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
-    %{fopenmp:%:include(libgomp.spec)%(link_gomp)} %(mflib)\
+    %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
+    %(mflib)\
     %{fprofile-arcs|fprofile-generate|coverage:-lgcov}\
     %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
     %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
diff --git a/gcc/config/ia64/hpux.h b/gcc/config/ia64/hpux.h
index ca592e4..517132c 100644
--- a/gcc/config/ia64/hpux.h
+++ b/gcc/config/ia64/hpux.h
@@ -92,7 +92,7 @@ do {							\
 #undef  LIB_SPEC
 #define LIB_SPEC \
   "%{!shared: \
-     %{mt|pthread:%{fopenmp:-lrt} -lpthread} \
+     %{mt|pthread:%{fopenmp|ftree-parallelize-loops=*:-lrt} -lpthread} \
      %{p:%{!mlp64:-L/usr/lib/hpux32/libp} \
 	 %{mlp64:-L/usr/lib/hpux64/libp} -lprof} \
      %{pg:%{!mlp64:-L/usr/lib/hpux32/libp} \
diff --git a/gcc/config/pa/pa-hpux11.h b/gcc/config/pa/pa-hpux11.h
index c217398..4da1b09 100644
--- a/gcc/config/pa/pa-hpux11.h
+++ b/gcc/config/pa/pa-hpux11.h
@@ -120,7 +120,8 @@ along with GCC; see the file COPYING3.  If not see
 #undef LIB_SPEC
 #define LIB_SPEC \
   "%{!shared:\
-     %{fopenmp:%{static:-a archive_shared} -lrt %{static:-a archive}}\
+     %{fopenmp|ftree-parallelize-loops=*:%{static:-a archive_shared} -lrt\
+       %{static:-a archive}}\
      %{mt|pthread:-lpthread} -lc\
      %{static:%{!nolibdld:-a archive_shared -ldld -a archive -lc}\
        %{!mt:%{!pthread:-a shared -lc -a archive}}}}\
diff --git a/gcc/config/pa/pa64-hpux.h b/gcc/config/pa/pa64-hpux.h
index a3e21d3..9efc137 100644
--- a/gcc/config/pa/pa64-hpux.h
+++ b/gcc/config/pa/pa64-hpux.h
@@ -58,19 +58,22 @@ along with GCC; see the file COPYING3.  If not see
 #if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GNU_LD)
 #define LIB_SPEC \
   "%{!shared:\
-     %{!p:%{!pg:%{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
+     %{!p:%{!pg:%{fopenmp|ftree-parallelize-loops=*:%{static:-a shared} -lrt\
+                  %{static:-a archive}}\
 	    %{mt|pthread:-lpthread} -lc\
 	    %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
 		%{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
      %{p:%{!pg:%{static:%{!mhp-ld:-a shared}%{mhp-ld:-a archive_shared}}\
 	   -lprof %{static:-a archive}\
-	   %{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
+	   %{fopenmp|ftree-parallelize-loops=*:%{static:-a shared} -lrt\
+             %{static:-a archive}}\
 	   %{mt|pthread:-lpthread} -lc\
 	   %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
 		%{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
      %{pg:%{static:%{!mhp-ld:-a shared}%{mhp-ld:-a archive_shared}}\
        -lgprof %{static:-a archive}\
-       %{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
+       %{fopenmp|ftree-parallelize-loops=*:%{static:-a shared} -lrt\
+         %{static:-a archive}}\
        %{mt|pthread:-lpthread} -lc\
        %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
 		%{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
@@ -78,19 +81,22 @@ along with GCC; see the file COPYING3.  If not see
 #else
 #define LIB_SPEC \
   "%{!shared:\
-     %{!p:%{!pg:%{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
+     %{!p:%{!pg:%{fopenmp|ftree-parallelize-loops=*:%{static:-a shared} -lrt\
+                  %{static:-a archive}}\
 	    %{mt|pthread:-lpthread} -lc\
 	    %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
 		%{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
      %{p:%{!pg:%{static:%{mgnu-ld:-a shared}%{!mgnu-ld:-a archive_shared}}\
 	   -lprof %{static:-a archive}\
-	   %{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
+	   %{fopenmp|ftree-parallelize-loops=*:%{static:-a shared} -lrt\
+             %{static:-a archive}}\
 	   %{mt|pthread:-lpthread} -lc\
 	   %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
 		%{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
      %{pg:%{static:%{mgnu-ld:-a shared}%{!mgnu-ld:-a archive_shared}}\
        -lgprof %{static:-a archive}\
-       %{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
+       %{fopenmp|ftree-parallelize-loops=*:%{static:-a shared} -lrt\
+         %{static:-a archive}}\
        %{mt|pthread:-lpthread} -lc\
        %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
 		%{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
diff --git a/gcc/gcc.c b/gcc/gcc.c
index 83607e55..dff7477 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -924,7 +924,7 @@ static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
 #define DRIVER_SELF_SPECS ""
 #endif
 
-/* Adding -fopenmp should imply pthreads.  This is particularly important
+/* Linking to libgomp implies pthreads.  This is particularly important
    for targets that use different start files and suchlike.  */
 #ifndef GOMP_SELF_SPECS
 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
diff --git a/libgomp/ChangeLog b/libgomp/ChangeLog
index e04c56a..507a589 100644
--- a/libgomp/ChangeLog
+++ b/libgomp/ChangeLog
@@ -1,3 +1,9 @@
+2013-11-07  Thomas Schwinge  <thomas@codesourcery.com>
+
+	* libgomp.spec.in: Update comment about libgomp's dependencies.
+	* configure.ac: Likewise.
+	* configure: Regenerate.
+
 2013-10-16  Tobias Burnus  <burnus@net-b.de>
 
 	* libgomp.texi: (Runtime Library Routines): Update references for
diff --git a/libgomp/configure b/libgomp/configure
index 06276e1..766eb09 100755
--- a/libgomp/configure
+++ b/libgomp/configure
@@ -16154,7 +16154,7 @@ else
 fi
 
 # Set up the set of libraries that we need to link against for libgomp.
-# Note that the GOMP_SELF_SPEC in gcc.c will force -pthread for -fopenmp,
+# Note that the GOMP_SELF_SPEC in gcc.c may force -pthread,
 # 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
diff --git a/libgomp/configure.ac b/libgomp/configure.ac
index e7fbb31..84d250f 100644
--- a/libgomp/configure.ac
+++ b/libgomp/configure.ac
@@ -274,7 +274,7 @@ else
 fi
 
 # Set up the set of libraries that we need to link against for libgomp.
-# Note that the GOMP_SELF_SPEC in gcc.c will force -pthread for -fopenmp,
+# Note that the GOMP_SELF_SPEC in gcc.c may force -pthread,
 # 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
diff --git a/libgomp/libgomp.spec.in b/libgomp/libgomp.spec.in
index b7319f3..5651603 100644
--- a/libgomp/libgomp.spec.in
+++ b/libgomp/libgomp.spec.in
@@ -1,3 +1,3 @@
 # This spec file is read by gcc when linking.  It is used to specify the
-# standard libraries we need in order to link with -fopenmp.
+# standard libraries we need in order to link with libgomp.
 *link_gomp: @link_gomp@