path: root/Makefile
diff options
authorAndrew Morton <akpm@osdl.org>2006-12-22 01:12:01 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-22 08:55:51 -0800
commitef129412b4cbd6686d0749612cb9b76e207271f4 (patch)
tree54492763733c957405d938a74fb0ac99da927f9b /Makefile
parent[PATCH] sched: fix bad missed wakeups in the i386, x86_64, ia64, ACPI and APM idle code (diff)
[PATCH] build compile.h earlier
compile.h is created super-late in the build. But proc_misc.c want to include it, and it's generally not sane to have a header file in include/linux be created at the end of the build: it's either not present or, worse, wrong for most of the build. So the patch arranges for compile.h to be built at the start of the build process. It also consolidates the compile.h rules with those for version.h and utsname.h, so they all get built together. I hope. My chances of having got this right are about 2%. Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Makefile')
1 files changed, 22 insertions, 9 deletions
diff --git a/Makefile b/Makefile
index 4a4720387936..97155a8fd73c 100644
--- a/Makefile
+++ b/Makefile
@@ -368,10 +368,14 @@ endif
# Detect when mixed targets is specified, and make a second invocation
# of make so .config is not included in this case either (for *config).
-no-dot-config-targets := clean mrproper distclean \
+PHONY += generated_headers
+generated_headers: include/linux/version.h include/linux/compile.h \
+ include/linux/utsrelease.h
+no-dot-config-targets := generated_headers clean mrproper distclean \
cscope TAGS tags help %docs check% \
- include/linux/version.h headers_% \
- kernelrelease kernelversion
+ headers_% kernelrelease kernelversion
config-targets := 0
mixed-targets := 0
@@ -734,6 +738,16 @@ debug_kallsyms: .tmp_map$(last_kallsyms)
endif # ifdef CONFIG_KALLSYMS
+# compile.h changes depending on hostname, generation number, etc,
+# so we regenerate it always.
+# mkcompile_h will make sure to only update the
+# actual file if its content has changed.
+include/linux/compile.h: FORCE
+ @echo ' CHK $@'
+ $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkcompile_h $@ \
# vmlinux image - including updated kernel symbols
vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
@@ -852,8 +866,8 @@ endif
# prepare2 creates a makefile if using a separate output directory
prepare2: prepare3 outputmakefile
-prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \
- include/asm include/config/auto.conf
+prepare1: prepare2 generated_headers include/asm include/config/auto.conf
ifneq ($(KBUILD_MODULES),)
$(Q)mkdir -p $(MODVERDIR)
$(Q)rm -f $(MODVERDIR)/*
@@ -922,14 +936,14 @@ export INSTALL_HDR_PATH
HDRARCHES=$(filter-out generic,$(patsubst $(srctree)/include/asm-%/Kbuild,%,$(wildcard $(srctree)/include/asm-*/Kbuild)))
PHONY += headers_install_all
-headers_install_all: include/linux/version.h scripts_basic FORCE
+headers_install_all: generated_headers scripts_basic FORCE
$(Q)$(MAKE) $(build)=scripts scripts/unifdef
$(Q)for arch in $(HDRARCHES); do \
$(MAKE) ARCH=$$arch -f $(srctree)/scripts/Makefile.headersinst obj=include BIASMDIR=-bi-$$arch ;\
PHONY += headers_install
-headers_install: include/linux/version.h scripts_basic FORCE
+headers_install: generated_headers scripts_basic FORCE
@if [ ! -r $(srctree)/include/asm-$(ARCH)/Kbuild ]; then \
echo '*** Error: Headers not exportable for this architecture ($(ARCH))'; \
exit 1 ; fi
@@ -1026,8 +1040,7 @@ CLEAN_FILES += vmlinux System.map \
# Directories & files removed with 'make mrproper'
MRPROPER_DIRS += include/config include2 usr/include
MRPROPER_FILES += .config .config.old include/asm .version .old_version \
- include/linux/autoconf.h include/linux/version.h \
- include/linux/utsrelease.h \
+ include/linux/autoconf.h generated-headers \
Module.symvers tags TAGS cscope*
# clean - Delete most, but leave enough to build external modules