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| author | kaf24@firebug.cl.cam.ac.uk <kaf24@firebug.cl.cam.ac.uk> | 2006-09-13 13:52:03 +0100 |
|---|---|---|
| committer | kaf24@firebug.cl.cam.ac.uk <kaf24@firebug.cl.cam.ac.uk> | 2006-09-13 13:52:03 +0100 |
| commit | c6fed51d96afce5fa320d87a303460843398dedf (patch) | |
| tree | bcbe158fa4a32c4e45df2a847668c62f9a10116c /xen/arch/x86/Rules.mk | |
| parent | 84804f40f963d9eac6d6504c40293b3735bbd66e (diff) | |
| download | xen-c6fed51d96afce5fa320d87a303460843398dedf.tar.gz xen-c6fed51d96afce5fa320d87a303460843398dedf.tar.bz2 xen-c6fed51d96afce5fa320d87a303460843398dedf.zip | |
[XEN] Define -fvisibility=hidden in CFLAGS to reduce -fpic cost
when compiling for x86/64.
Signed-off-by: Keir Fraser <keir@xensource.com>
Diffstat (limited to 'xen/arch/x86/Rules.mk')
| -rw-r--r-- | xen/arch/x86/Rules.mk | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/xen/arch/x86/Rules.mk b/xen/arch/x86/Rules.mk index e91c8bf02d..32c8e02695 100644 --- a/xen/arch/x86/Rules.mk +++ b/xen/arch/x86/Rules.mk @@ -42,6 +42,9 @@ endif ifeq ($(TARGET_SUBARCH),x86_64) CFLAGS += -mno-red-zone -fpic -fno-reorder-blocks CFLAGS += -fno-asynchronous-unwind-tables +# -fvisibility=hidden reduces -fpic cost, if it's available +CFLAGS += $(shell $(CC) -v --help 2>&1 | grep " -fvisibility=" | \ + grep -q hidden && echo "-fvisibility=hidden") LDFLAGS += -m elf_x86_64 x86_32 := n x86_64 := y |