uml: fix gcc problem

this is what caused gcc 4.3 to throw an internal error when OPTIMIZE_INLINING was enabled ... Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

uml: fix gcc problem
this is what caused gcc 4.3 to throw an internal error when OPTIMIZE_INLINING was enabled ... Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Ingo Molnar
1 parent 48b83d2425
Showing 1 changed file with 4 additions and 1 deletions Side-by-side Diff
arch/um/Makefile
@@ -77,7 +77,10 @@
 KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
 			 -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES))
 KBUILD_CFLAGS += $(KERNEL_DEFINES)
-KBUILD_CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
+# 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:
+KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \
+			echo $(call cc-option,-fno-unit-at-a-time); fi ;)
  
 PHONY += linux
...	...	@@ -77,7 +77,10 @@
77	77	KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
78	78	-Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES))
79	79	KBUILD_CFLAGS += $(KERNEL_DEFINES)
80		-KBUILD_CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
	80	+# Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
	81	+# a lot more stack due to the lack of sharing of stacklots:
	82	+KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \
	83	+ echo $(call cc-option,-fno-unit-at-a-time); fi ;)
81	84
82	85	PHONY += linux
83	86