From dec36b4f0c71809ed9abae3b4310c38a74118185 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Fri, 25 Nov 2005 18:36:59 +0000
Subject: * Makeconfig (+cflags): Add -fmerge-all-constants by default.

---
 Makeconfig | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'Makeconfig')

diff --git a/Makeconfig b/Makeconfig
index 97f74f7e1f..01ca7097e6 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -557,6 +557,10 @@ else
 +gccwarn := -Wall -Wwrite-strings -Winline -Wstrict-prototypes
 endif
 
+# We do not depend on the address of constants in different files to be
+# actually different, so allow the compiler to merge them all.
++merge-constants = -fmerge-all-constants
+
 # 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.
@@ -611,7 +615,7 @@ ifeq	"$(strip $(+cflags))" ""
 +cflags	:= $(default_cflags)
 endif	# $(+cflags) == ""
 
-+cflags := $(+cflags) $(addprefix -mcpu=,$(with-cpu)) $(+gccwarn)
++cflags += $(addprefix -mcpu=,$(with-cpu)) $(+gccwarn) $(+merge-constants)
 +gcc-nowarn := -w
 
 # Don't duplicate options if we inherited variables from the parent.
-- 
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