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authorUlrich Drepper <drepper@redhat.com>2005-11-25 18:36:59 +0000
committerUlrich Drepper <drepper@redhat.com>2005-11-25 18:36:59 +0000
commitdec36b4f0c71809ed9abae3b4310c38a74118185 (patch)
treef75ef2cdf81e088abc493e276a5ca74afc2e4659 /Makeconfig
parenteed38d45aa28b78f82b0af92cd29efc6961f01cd (diff)
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* Makeconfig (+cflags): Add -fmerge-all-constants by default.
Diffstat (limited to 'Makeconfig')
-rw-r--r--Makeconfig6
1 files changed, 5 insertions, 1 deletions
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.