elementary: automatically detect if compiler can build quicklaunch binary.

1 files changed, 24 insertions, 0 deletions

diff --git a/m4/elm_quicklaunch.m4 b/m4/elm_quicklaunch.m4
new file mode 100644
index 000000000..19fb4bed1
--- /dev/null
+++ b/m4/elm_quicklaunch.m4
@@ -0,0 +1,24 @@
+dnl Copyright (C) 2013 Cedric Bail <cedric dot bail at samsung dot com>
+dnl That code is public domain and can be freely used or copied
+
+dnl Macro that check if -pie -rdynamic can be given to ld
+
+dnl Usage: ELM_QUICKLAUNCH
+dnl add -pie -rdynamic to LDFLAGS and -fpie to CFLAGS
+
+AC_DEFUN([ELM_QUICKLAUNCH],
+[
+AC_MSG_CHECKING([If the compiler as what it takes to do quicklaunch (-pie -rdynamic)])
+old_LDFLAGS="$LDFLAGS"
+old_CFLAGS="$CFLAGS"
+
+LDFLAGS="$LDFLAGS -pie -rdynamic"
+CFLAGS="$CFLAGS -fpie"
+
+AC_LINK_IFELSE([int main(){}],
+        [AC_MSG_RESULT([yes])],
+        [LDFLAGS="$old_LDFLAGS"
+	CFLAGS="$old_CFLAGS"
+        AC_MSG_RESULT([no])
+        ])
+])