Try to only use the GCC workaround if gcc version is 4.8

git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk@24587 f25d12d1-65f4-0310-ae8a-bbce733d8d8e

Author: sjoelund

configure.in

@@ -146,8 +146,12 @@ AC_TRY_LINK([void abc() {}], [abc();], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([n
 fi
 fi
 
+TRY_FLAGS="-fno-stack-protector"
 # GCC 4.8 generates bad code with some optimisation flags. Let's try to disable them.
-for flag in -fno-tree-ch -fno-tree-vrp -fno-tree-pre -fno-stack-protector; do
+if $CC --version | head -n1 | sed "s/ *[(].*[)]//" | grep -q 4[.]8; then
+  TRY_FLAGS="$TRY_FLAGS -fno-tree-ch -fno-tree-vrp -fno-tree-pre"
+fi
+for flag in $TRY_FLAGS; do
   OLD_CFLAGS="$CFLAGS"
   CFLAGS="$RUNTIMECFLAGS $flag -Werror"
   AC_TRY_LINK([], [return 0;], [CFLAGS="$OLD_CFLAGS $flag"],[CFLAGS="$OLD_CFLAGS"])