[15/15] Enable -fstack-protector=* when requested by configure.
Commit Message
From: Nick Alcock <nick.alcock@oracle.com>
This finally turns on all the machinery added in previous commits.
v3: Wrap long lines.
v5: Shuffle to the end.
* Makeconfig (+stack-protector): New variable.
(+cflags): Use it.
---
Makeconfig | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
@@ -762,6 +762,11 @@ endif
# disable any optimization that assume default rounding mode.
+math-flags = -frounding-math
+# We might want to compile with some stack-protection flag.
+ifneq ($(stack-protector),)
++stack-protector=$(stack-protector)
+endif
+
# This is the program that generates makefile dependencies from C source files.
# The -MP flag tells GCC >= 3.2 (which we now require) to produce dummy
# targets for headers so that removed headers don't break the build.
@@ -821,7 +826,8 @@ ifeq "$(strip $(+cflags))" ""
+cflags := $(default_cflags)
endif # $(+cflags) == ""
-+cflags += $(cflags-cpu) $(+gccwarn) $(+merge-constants) $(+math-flags)
++cflags += $(cflags-cpu) $(+gccwarn) $(+merge-constants) $(+math-flags) \
+ $(+stack-protector)
+gcc-nowarn := -w
# Don't duplicate options if we inherited variables from the parent.