X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=Makefile;h=6d419f67939c29f28a2b003272ce70d9881bc769;hb=ac18e7509e7df327e30d6e073a787d922eaf211d;hp=f9c264e243a2a01e78cd85d209b8cdae8102a6ab;hpb=4800be295c34268fd3211d49828bfaa6bf62867f;p=safe%2Fjmp%2Flinux-2.6

diff --git a/Makefile b/Makefile
index f9c264e..6d419f6 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 VERSION = 2
 PATCHLEVEL = 6
-SUBLEVEL = 23
+SUBLEVEL = 24
 EXTRAVERSION =
 NAME = Arr Matey! A Hairy Bilge Rat!
 
@@ -12,7 +12,7 @@ NAME = Arr Matey! A Hairy Bilge Rat!
 
 # Do not:
 # o  use make's built-in rules and variables
-#    (this increases performance and avoid hard-to-debug behavour);
+#    (this increases performance and avoids hard-to-debug behaviour);
 # o  print "Entering directory ...";
 MAKEFLAGS += -rR --no-print-directory
 
@@ -108,6 +108,9 @@ endif
 PHONY := _all
 _all:
 
+# Cancel implicit rules on top Makefile
+$(CURDIR)/Makefile Makefile: ;
+
 ifneq ($(KBUILD_OUTPUT),)
 # Invoke a second make in the output directory, passing relevant variables
 # check that the output directory actually exists
@@ -115,13 +118,10 @@ saved-output := $(KBUILD_OUTPUT)
 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
 $(if $(KBUILD_OUTPUT),, \
      $(error output directory "$(saved-output)" does not exist))
-# Check that OUTPUT directory is not the same as where we have kernel src
-$(if $(filter-out $(KBUILD_OUTPUT),$(shell /bin/pwd)),, \
-     $(error Output directory (O=...) specifies kernel src dir))
 
 PHONY += $(MAKECMDGOALS) sub-make
 
-$(filter-out _all sub-make,$(MAKECMDGOALS)) _all: sub-make
+$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
 	$(Q)@:
 
 sub-make: FORCE
@@ -168,7 +168,8 @@ export srctree objtree VPATH TOPDIR
 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
 				  -e s/arm.*/arm/ -e s/sa110/arm/ \
 				  -e s/s390x/s390/ -e s/parisc64/parisc/ \
-				  -e s/ppc.*/powerpc/ -e s/mips.*/mips/ )
+				  -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
+				  -e s/sh.*/sh/ )
 
 # Cross compiling and selecting different set of gcc/bin-utils
 # ---------------------------------------------------------------------------
@@ -196,6 +197,14 @@ CROSS_COMPILE	?=
 UTS_MACHINE 	:= $(ARCH)
 SRCARCH 	:= $(ARCH)
 
+# Additional ARCH settings for x86
+ifeq ($(ARCH),i386)
+        SRCARCH := x86
+endif
+ifeq ($(ARCH),x86_64)
+        SRCARCH := x86
+endif
+
 KCONFIG_CONFIG	?= .config
 
 # SHELL used by kbuild
@@ -282,7 +291,8 @@ export quiet Q KBUILD_VERBOSE
 # Look for make include files relative to root of kernel src
 MAKEFLAGS += --include-dir=$(srctree)
 
-# We need some generic definitions.
+# We need some generic definitions (do not try to remake the file).
+$(srctree)/scripts/Kbuild.include: ;
 include $(srctree)/scripts/Kbuild.include
 
 # Make variables (CC, etc...)
@@ -418,7 +428,7 @@ ifeq ($(config-targets),1)
 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
 # KBUILD_DEFCONFIG may point out an alternative default configuration
 # used for 'make defconfig'
-include $(srctree)/arch/$(ARCH)/Makefile
+include $(srctree)/arch/$(SRCARCH)/Makefile
 export KBUILD_DEFCONFIG
 
 config %config: scripts_basic outputmakefile FORCE
@@ -497,7 +507,7 @@ else
 KBUILD_CFLAGS	+= -O2
 endif
 
-include $(srctree)/arch/$(ARCH)/Makefile
+include $(srctree)/arch/$(SRCARCH)/Makefile
 
 ifdef CONFIG_FRAME_POINTER
 KBUILD_CFLAGS	+= -fno-omit-frame-pointer -fno-optimize-sibling-calls
@@ -524,9 +534,22 @@ KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
 KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,)
 
 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
-KBUILD_CPPFLAGS += $(CPPFLAGS)
-KBUILD_AFLAGS   += $(AFLAGS)
-KBUILD_CFLAGS   += $(CFLAGS)
+# But warn user when we do so
+warn-assign = \
+$(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)")
+
+ifneq ($(KCPPFLAGS),)
+        $(call warn-assign,CPPFLAGS)
+        KBUILD_CPPFLAGS += $(KCPPFLAGS)
+endif
+ifneq ($(KAFLAGS),)
+        $(call warn-assign,AFLAGS)
+        KBUILD_AFLAGS += $(KAFLAGS)
+endif
+ifneq ($(KCFLAGS),)
+        $(call warn-assign,CFLAGS)
+        KBUILD_CFLAGS += $(KCFLAGS)
+endif
 
 # Use --build-id when available.
 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
@@ -1306,16 +1329,11 @@ else
 ALLINCLUDE_ARCHS := $(SRCARCH)
 endif
 else
-#Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behavour.
+#Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour.
 ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
 endif
 
-# Take care of arch/x86
-ifeq ($(ARCH), $(SRCARCH))
-ALLSOURCE_ARCHS := $(ARCH)
-else
-ALLSOURCE_ARCHS := $(ARCH) $(SRCARCH)
-endif
+ALLSOURCE_ARCHS := $(SRCARCH)
 
 define find-sources
         ( for arch in $(ALLSOURCE_ARCHS) ; do \
@@ -1505,15 +1523,16 @@ quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files))
 # and we build for the host arch
 quiet_cmd_depmod = DEPMOD  $(KERNELRELEASE)
       cmd_depmod = \
-	if [ -r System.map -a -x $(DEPMOD) -a "$(SUBARCH)" == "$(ARCH)" ]; then \
+	if [ -r System.map -a -x $(DEPMOD) ]; then                              \
 		$(DEPMOD) -ae -F System.map                                     \
 		$(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) -r)   \
 		$(KERNELRELEASE);                                               \
 	fi
 
 # Create temporary dir for module support files
-cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR); rm -f $(MODVERDIR)/*
-
+# clean it up only when building all modules
+cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
+                  $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
 
 a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \
 	  $(NOSTDINC_FLAGS) $(KBUILD_CPPFLAGS) \
@@ -1542,9 +1561,6 @@ endif	# skip-makefile
 PHONY += FORCE
 FORCE:
 
-# Cancel implicit rules on top Makefile, `-rR' will apply to sub-makes.
-Makefile: ;
-
 # Declare the contents of the .PHONY variable as phony.  We keep that
 # information in a variable se we can use it in if_changed and friends.
 .PHONY: $(PHONY)