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authorIngo Molnar <mingo@elte.hu>2008-07-18 19:53:16 +0200
committerIngo Molnar <mingo@elte.hu>2008-07-18 19:53:16 +0200
commit9b610fda0df5d0f0b0c64242e37441ad1b384aac (patch)
tree0ea14b15f2e6546f37fe18d8ac3dc83077ec0e55 /arch/um/Makefile-i386
parentb8f8c3cf0a4ac0632ec3f0e15e9dc0c29de917af (diff)
parent5b664cb235e97afbf34db9c4d77f08ebd725335e (diff)
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Merge branch 'linus' into timers/nohz
Diffstat (limited to 'arch/um/Makefile-i386')
-rw-r--r--arch/um/Makefile-i3867
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/um/Makefile-i386 b/arch/um/Makefile-i386
index 561e373bd85..302cbe50454 100644
--- a/arch/um/Makefile-i386
+++ b/arch/um/Makefile-i386
@@ -32,4 +32,11 @@ cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)
# an unresolved reference.
cflags-y += -ffreestanding
+# Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
+# a lot more stack due to the lack of sharing of stacklots. Also, gcc
+# 4.3.0 needs -funit-at-a-time for extern inline functions.
+KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \
+ echo $(call cc-option,-fno-unit-at-a-time); \
+ else echo $(call cc-option,-funit-at-a-time); fi ;)
+
KBUILD_CFLAGS += $(cflags-y)