Basic implementation of 'make headers_install'

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / Makefile

diff --git a/Makefile b/Makefile
index fc8e08c419f09e81252f3aa41cb7f47524c0af60..98e5af72983feacf09354c6264cb6e61a8d4a0d4 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 6
 SUBLEVEL = 17
-EXTRAVERSION =-rc1
+EXTRAVERSION =-rc4
 NAME=Sliding Snow Leopard
 
 # *DOCUMENTATION*
@@ -344,16 +344,14 @@ scripts_basic:
 scripts/basic/%: scripts_basic ;
 
 PHONY += outputmakefile
-# outputmakefile generate a Makefile to be placed in output directory, if
-# using a seperate output directory. This allows convinient use
-# of make in output directory
+# outputmakefile generates a Makefile in the output directory, if using a
+# separate output directory. This allows convenient use of make in the
+# output directory.
 outputmakefile:
-       $(Q)if test ! $(srctree) -ef $(objtree); then \
-       $(CONFIG_SHELL) $(srctree)/scripts/mkmakefile              \
-           $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)         \
-           > $(objtree)/Makefile;                                 \
-           echo '  GEN    $(objtree)/Makefile';                   \
-       fi
+ifneq ($(KBUILD_SRC),)
+       $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
+           $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
+endif
 
 # To make sure we do not include .config for any of the *config targets
 # catch them early, and hand them over to scripts/kconfig/Makefile
@@ -796,8 +794,8 @@ prepare2: prepare3 outputmakefile
 prepare1: prepare2 include/linux/version.h include/asm \
                    include/config/MARKER
 ifneq ($(KBUILD_MODULES),)
-       $(Q)rm -rf $(MODVERDIR)
        $(Q)mkdir -p $(MODVERDIR)
+       $(Q)rm -f $(MODVERDIR)/*
 endif
 
 archprepare: prepare1 scripts_basic
@@ -857,6 +855,17 @@ PHONY += depend dep
 depend dep:
        @echo '*** Warning: make $@ is unnecessary now.'
 
+# ---------------------------------------------------------------------------
+# Kernel headers
+INSTALL_HDR_PATH=$(MODLIB)/abi
+export INSTALL_HDR_PATH
+
+PHONY += headers_install
+headers_install: include/linux/version.h
+       $(Q)unifdef -Ux /dev/null
+       $(Q)rm -rf $(INSTALL_HDR_PATH)/include
+       $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include
+
 # ---------------------------------------------------------------------------
 # Modules
 
@@ -1029,6 +1038,8 @@ help:
        @echo  '  cscope          - Generate cscope index'
        @echo  '  kernelrelease   - Output the release version string'
        @echo  '  kernelversion   - Output the version stored in Makefile'
+       @echo  '  headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'
+       @echo  '                    (default: /lib/modules/$$VERSION/abi)'
        @echo  ''
        @echo  'Static analysers'
        @echo  '  checkstack      - Generate a list of stack hogs'
@@ -1086,8 +1097,8 @@ else # KBUILD_EXTMOD
 KBUILD_MODULES := 1
 PHONY += crmodverdir
 crmodverdir:
-       $(Q)rm -rf $(MODVERDIR)
        $(Q)mkdir -p $(MODVERDIR)
+       $(Q)rm -f $(MODVERDIR)/*
 
 PHONY += $(objtree)/Module.symvers
 $(objtree)/Module.symvers: