1 files changed, 38 insertions, 12 deletions

diff --git a/Makefile b/Makefile
index 4dcf25d43fa6..11a850cffd3d 100644
--- a/Makefile
+++ b/Makefile
@@ -309,6 +309,9 @@ CPPFLAGS        := -D__KERNEL__ $(LINUXINCLUDE)
 
 CFLAGS          := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
                    -fno-strict-aliasing -fno-common
+# Force gcc to behave correct even for buggy distributions
+CFLAGS          += $(call cc-option, -fno-stack-protector-all \
+                                     -fno-stack-protector)
 AFLAGS          := -D__ASSEMBLY__
 
 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
@@ -809,8 +812,8 @@ endif
 # prepare2 creates a makefile if using a separate output directory
 prepare2: prepare3 outputmakefile
 
-prepare1: prepare2 include/linux/version.h include/asm \
-                   include/config/auto.conf
+prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \
+                   include/asm include/config/auto.conf
 ifneq ($(KBUILD_MODULES),)
         $(Q)mkdir -p $(MODVERDIR)
         $(Q)rm -f $(MODVERDIR)/*
@@ -845,21 +848,26 @@ include/asm:
 # needs to be updated, so this check is forced on all builds
 
 uts_len := 64
+define filechk_utsrelease.h
+        if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
+          echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2;    \
+          exit 1;                                                         \
+        fi;                                                               \
+        (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
+endef
 
 define filechk_version.h
-        if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
-          echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
-          exit 1; \
-        fi; \
-        (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \
-          echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \
-         echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \
-        )
+        (echo \#define LINUX_VERSION_CODE $(shell                             \
+        expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL));     \
+        echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
 endef
 
-include/linux/version.h: $(srctree)/Makefile include/config/kernel.release FORCE
+include/linux/version.h: $(srctree)/Makefile FORCE
         $(call filechk,version.h)
 
+include/linux/utsrelease.h: include/config/kernel.release FORCE
+        $(call filechk,utsrelease.h)
+
 # ---------------------------------------------------------------------------
 
 PHONY += depend dep
@@ -867,6 +875,21 @@ 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
+
+PHONY += headers_check
+headers_check: headers_install
+        $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include HDRCHECK=1
+
+# ---------------------------------------------------------------------------
 # Modules
 
 ifdef CONFIG_MODULES
@@ -952,7 +975,8 @@ CLEAN_FILES +=	vmlinux System.map \
 # Directories & files removed with 'make mrproper'
 MRPROPER_DIRS  += include/config include2
 MRPROPER_FILES += .config .config.old include/asm .version .old_version \
-                  include/linux/autoconf.h include/linux/version.h \
+                  include/linux/autoconf.h include/linux/version.h      \
+                  include/linux/utsrelease.h                            \
                   Module.symvers tags TAGS cscope*
 
 # clean - Delete most, but leave enough to build external modules
@@ -1039,6 +1063,8 @@ 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'