[glib] Add --disable-Bsymbolic flag

[Ryan Lortie <ryanl src gnome org>]

commit 48881bad99807381afcb55137eced4d7c50ac5a7
Author: Ryan Lortie <desrt desrt ca>
Date:   Mon Jul 5 13:10:28 2010 -0400

    Add --disable-Bsymbolic flag

 configure.in |   27 ++++++++++++++++++---------
 1 files changed, 18 insertions(+), 9 deletions(-)
---
diff --git a/configure.in b/configure.in
index fd9d0c4..437d34b 100644
--- a/configure.in
+++ b/configure.in
@@ -3638,16 +3638,25 @@ dnl
 dnl Check for -Bsymbolic-functions linker flag used to avoid
 dnl intra-library PLT jumps, if available.
 dnl
-SAVED_LDFLAGS="${LDFLAGS}"
-AC_MSG_CHECKING([for -Bsymbolic-functions linker flag])
-LDFLAGS=-Wl,-Bsymbolic-functions
-AC_TRY_LINK([], [int main (void) { return 0; }],
-            GLIB_LINK_FLAGS=-Wl[,]-Bsymbolic-functions
-            AC_MSG_RESULT(yes),
-            GLIB_LINK_FLAGS=
-            AC_MSG_RESULT(no))
+
+AC_ARG_ENABLE(Bsymbolic,
+              [AC_HELP_STRING([--disable-Bsymbolic],
+                              [avoid linking with -Bsymbolic])],,
+              [SAVED_LDFLAGS="${LDFLAGS}"
+               AC_MSG_CHECKING([for -Bsymbolic-functions linker flag])
+               LDFLAGS=-Wl,-Bsymbolic-functions
+               AC_TRY_LINK([], [int main (void) { return 0; }],
+                           AC_MSG_RESULT(yes)
+                           enable_Bsymbolic=yes,
+                           AC_MSG_RESULT(no)
+                           enable_Bsymbolic=no)
+               LDFLAGS="${SAVED_LDFLAGS}"])
+
+if test "x${enable_Bsymbolic}" == "xyes"; then
+  GLIB_LINK_FLAGS=-Wl,-Bsymbolic-functions
+fi
+
 AC_SUBST(GLIB_LINK_FLAGS)
-LDFLAGS="${SAVED_LDFLAGS}"
 
 AC_CONFIG_FILES([
 glib-2.0.pc