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-rw-r--r--Makefile31
1 files changed, 22 insertions, 9 deletions
diff --git a/Makefile b/Makefile
index 4a472038793..97155a8fd73 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 $@ \
+ "$(UTS_MACHINE)" "$(CONFIG_SMP)" "$(CONFIG_PREEMPT)" "$(CC) $(CFLAGS)"
+
# vmlinux image - including updated kernel symbols
vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
ifdef CONFIG_HEADERS_CHECK
@@ -852,8 +866,8 @@ endif
# prepare2 creates a makefile if using a separate output directory
prepare2: prepare3 outputmakefile
-prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \
- include/asm include/config/auto.conf
+prepare1: prepare2 generated_headers include/asm include/config/auto.conf
+
ifneq ($(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 ;\
done
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