Merge branch 'core/topology' of git://git.kernel.org/pub/scm/linux/kernel/git/tip...

[sfrench/cifs-2.6.git] / arch / um / Makefile-i386

diff --git a/arch/um/Makefile-i386 b/arch/um/Makefile-i386
index 67290117d90924ff0dc712af68725562b574c450..302cbe504543c04ea709f030b74425fd6cb859e2 100644 (file)
--- a/arch/um/Makefile-i386
+++ b/arch/um/Makefile-i386
@@ -22,11 +22,6 @@ export LDFLAGS HOSTCFLAGS HOSTLDFLAGS UML_OBJCOPYFLAGS
 endif
 endif
 
-KBUILD_CFLAGS          += -DCONFIG_X86_32
-KBUILD_AFLAGS          += -DCONFIG_X86_32
-CONFIG_X86_32          := y
-export CONFIG_X86_32
-
 # First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y.
 include $(srctree)/arch/x86/Makefile_32.cpu
 
@@ -37,4 +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)