X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fum%2FMakefile-i386;h=302cbe504543c04ea709f030b74425fd6cb859e2;hb=d1a35e4d74d070b06163e435e590ca90a2420b9e;hp=561e373bd8500f1f07ed4cc52b203dc903585f70;hpb=c64768a7d671bcde80bca2aed93f9e07edc069c3;p=linux-2.6-omap-h63xx.git

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)