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authorPaul Smith <psmith@gnu.org>2006-03-05 17:14:10 -0500
committerSam Ravnborg <sam@mars.ravnborg.org>2006-03-05 18:09:51 -0500
commit4f1933620f57145212cdbb1ac6ce099eeeb21c5a (patch)
treec083cce1f0acedd92be2ac6eb5e6c49ebd84ac46 /arch/x86_64/Makefile
parent7b75b13cda8bd21e8636ea985f76e1ce5bd1a470 (diff)
kbuild: change kbuild to not rely on incorrect GNU make behavior
The kbuild system takes advantage of an incorrect behavior in GNU make. Once this behavior is fixed, all files in the kernel rebuild every time, even if nothing has changed. This patch ensures kbuild works with both the incorrect and correct behaviors of GNU make. For more details on the incorrect behavior, see: http://lists.gnu.org/archive/html/bug-make/2006-03/msg00003.html Changes in this patch: - Keep all targets that are to be marked .PHONY in a variable, PHONY. - Add .PHONY: $(PHONY) to mark them properly. - Remove any $(PHONY) files from the $? list when determining whether targets are up-to-date or not. Signed-off-by: Paul Smith <psmith@gnu.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'arch/x86_64/Makefile')
-rw-r--r--arch/x86_64/Makefile4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86_64/Makefile b/arch/x86_64/Makefile
index d7fd46479c55..7405dfd6522b 100644
--- a/arch/x86_64/Makefile
+++ b/arch/x86_64/Makefile
@@ -67,8 +67,8 @@ drivers-$(CONFIG_OPROFILE) += arch/x86_64/oprofile/
67 67
68boot := arch/x86_64/boot 68boot := arch/x86_64/boot
69 69
70.PHONY: bzImage bzlilo install archmrproper \ 70PHONY += bzImage bzlilo install archmrproper \
71 fdimage fdimage144 fdimage288 archclean 71 fdimage fdimage144 fdimage288 archclean
72 72
73#Default target when executing "make" 73#Default target when executing "make"
74all: bzImage 74all: bzImage