re PR target/65351 (libiberty's pic version contains non-pic code on m32 darwin; causes bootstrap fail building libcc1.)

	PR target/65351
config/
	* mh-darwin: Only apply -mdynamic-no-pic for m32 Darwin when the compiler in
	use supports -mno-dynamic-no-pic.
	* picflag.m4: Only append -mno-dynamic-no-pic for Darwin when -mdynamic-no-pic
	is present in CFLAGS.

libiberty/
	* configure: Regenerate.
libada/
	* configure: Regenerate.
libgcc/
	* configure: Regenerate.
gcc/
	* configure: Regenerate.


Co-Authored-By: Iain Sandoe <iain@codesourcery.com>

From-SVN: r221967

1 files changed, 9 insertions, 5 deletions

diff --git a/libiberty/configure b/libiberty/configure
index eaed56e3e1b..b06cab24efa 100755
--- a/libiberty/configure
+++ b/libiberty/configure
@@ -4885,11 +4885,15 @@ fi
 case "${host}" in
     # PIC is the default on some targets or must not be used.
     *-*-darwin*)
-	# PIC is the default on this platform
-	# Common symbols not allowed in MH_DYLIB files
-	# Cancel any earlier -mdynamic-no-pic, as that makes
-	# the code not suitable for shared libraries.
-	PICFLAG='-fno-common -mno-dynamic-no-pic'
+	# For darwin, common symbols are not allowed in MH_DYLIB files
+	case "${CFLAGS}" in
+	  # If we are using a compiler supporting mdynamic-no-pic
+	  # and the option has been tested as safe to add, then cancel
+	  # it here, since the code generated is incompatible with shared
+	  # libs.
+	  *-mdynamic-no-pic*) PICFLAG='-fno-common -mno-dynamic-no-pic' ;;
+	  *) PICFLAG=-fno-common ;;
+	esac
 	;;
     alpha*-dec-osf5*)
 	# PIC is the default.