configure.ac: add conditional for -z,defs

gmp216 · gmp216 · commit 1b8a6ef561c0 · 2017-01-04T09:19:04.000-05:00
diff --git a/configure.ac b/configure.ac
@@ -219,7 +219,12 @@ if test x"$debug_enabled" != x"yes" ; then
     CFLAGS="-DNDEBUG $CFLAGS"
 fi
 
+AS_ECHO_N(["checking to see if linker understands -z,defs... "])
+LDFLAGS_OLD="-Wl $LDFLAGS"
 LDFLAGS="-Wl,-z,defs $LDFLAGS"
+AC_LINK_IFELSE([AC_LANG_PROGRAM()],
+    AS_ECHO("yes"),
+    AS_ECHO("no"); LDFLAGS="$LDFLAGS_OLD")
 
 dnl
 dnl Make sure we can actually handle the "--with-*" and "--enable-*" stuff.
