X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=Makefile;h=68ef80b30340371e13ff8e38777d0bf9d715dc33;hb=caea7602f309cbd55ba609800fd3c3e5d19ab684;hp=2738966e1d3786b9d602b087efe998fee6f7636e;hpb=c34114f4acbc89a217148ebe166b2a68f973a7b9;p=linux-2.6-omap-h63xx.git

diff --git a/Makefile b/Makefile
index 2738966e1d3..68ef80b3034 100644
--- a/Makefile
+++ b/Makefile
@@ -115,13 +115,20 @@ 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)
+PHONY += $(MAKECMDGOALS) sub-make
 
-$(filter-out _all,$(MAKECMDGOALS)) _all:
+$(filter-out _all sub-make,$(MAKECMDGOALS)) _all: sub-make
+	$(Q)@:
+
+sub-make: FORCE
 	$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
 	KBUILD_SRC=$(CURDIR) \
-	KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@
+	KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
+	$(filter-out _all sub-make,$(MAKECMDGOALS))
 
 # Leave processing to above invocation of make
 skip-makefile := 1
@@ -311,12 +318,12 @@ LINUXINCLUDE    := -Iinclude \
                    $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
 		   -include include/linux/autoconf.h
 
-CPPFLAGS        := -D__KERNEL__ $(LINUXINCLUDE)
+KBUILD_CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
 
-CFLAGS          := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
+KBUILD_CFLAGS   := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
 		   -fno-strict-aliasing -fno-common \
 		   -Werror-implicit-function-declaration
-AFLAGS          := -D__ASSEMBLY__
+KBUILD_AFLAGS   := -D__ASSEMBLY__
 
 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
@@ -327,9 +334,9 @@ export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
 export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE
 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
 
-export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
-export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
-export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
+export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
+export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
+export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
 
 # When compiling out-of-tree modules, put MODVERDIR in the module
 # tree rather than in the kernel tree. The kernel tree might
@@ -485,35 +492,41 @@ endif # $(dot-config)
 all: vmlinux
 
 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
-CFLAGS		+= -Os
+KBUILD_CFLAGS	+= -Os
 else
-CFLAGS		+= -O2
+KBUILD_CFLAGS	+= -O2
 endif
 
 include $(srctree)/arch/$(ARCH)/Makefile
 
 ifdef CONFIG_FRAME_POINTER
-CFLAGS		+= -fno-omit-frame-pointer -fno-optimize-sibling-calls
+KBUILD_CFLAGS	+= -fno-omit-frame-pointer -fno-optimize-sibling-calls
 else
-CFLAGS		+= -fomit-frame-pointer
+KBUILD_CFLAGS	+= -fomit-frame-pointer
 endif
 
 ifdef CONFIG_DEBUG_INFO
-CFLAGS		+= -g
+KBUILD_CFLAGS	+= -g
+KBUILD_AFLAGS	+= -gdwarf-2
 endif
 
 # Force gcc to behave correct even for buggy distributions
-CFLAGS          += $(call cc-option, -fno-stack-protector)
+KBUILD_CFLAGS         += $(call cc-option, -fno-stack-protector)
 
 # arch Makefile may override CC so keep this after arch Makefile is included
 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
 CHECKFLAGS     += $(NOSTDINC_FLAGS)
 
 # warn about C99 declaration after statement
-CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
+KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
 
 # disable pointer signed / unsigned warnings in gcc 4.0
-CFLAGS += $(call cc-option,-Wno-pointer-sign,)
+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)
 
 # Use --build-id when available.
 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
@@ -760,6 +773,9 @@ endef
 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) vmlinux.o FORCE
 ifdef CONFIG_HEADERS_CHECK
 	$(Q)$(MAKE) -f $(srctree)/Makefile headers_check
+endif
+ifdef CONFIG_SAMPLES
+	$(Q)$(MAKE) $(build)=samples
 endif
 	$(call vmlinux-modpost)
 	$(call if_changed_rule,vmlinux__)
@@ -1149,6 +1165,7 @@ help:
 	@echo  'Static analysers'
 	@echo  '  checkstack      - Generate a list of stack hogs'
 	@echo  '  namespacecheck  - Name space analysis on compiled kernel'
+	@echo  '  export_report   - List the usages of all exported symbols'
 	@if [ -r $(srctree)/include/asm-$(SRCARCH)/Kbuild ]; then \
 	 echo  '  headers_check   - Sanity check on exported headers'; \
 	 fi
@@ -1311,8 +1328,8 @@ ALLSOURCE_ARCHS := $(ARCH) $(SRCARCH)
 endif
 
 define find-sources
-        ( for ARCH in $(ALLSOURCE_ARCHS) ; do \
-	       find $(__srctree)arch/$${SRCARCH} $(RCS_FIND_IGNORE) \
+        ( for arch in $(ALLSOURCE_ARCHS) ; do \
+	       find $(__srctree)arch/$${arch} $(RCS_FIND_IGNORE) \
 	            -name $1 -print; \
 	  done ; \
 	  find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
@@ -1320,8 +1337,8 @@ define find-sources
 	  find $(__srctree)include $(RCS_FIND_IGNORE) \
 	       \( -name config -o -name 'asm-*' \) -prune \
 	       -o -name $1 -print; \
-	  for ARCH in $(ALLINCLUDE_ARCHS) ; do \
-	       find $(__srctree)include/asm-$${SRCARCH} $(RCS_FIND_IGNORE) \
+	  for arch in $(ALLINCLUDE_ARCHS) ; do \
+	       find $(__srctree)include/asm-$${arch} $(RCS_FIND_IGNORE) \
 	            -name $1 -print; \
 	  done ; \
 	  find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
@@ -1413,6 +1430,9 @@ versioncheck:
 namespacecheck:
 	$(PERL) $(srctree)/scripts/namespace.pl
 
+export_report:
+	$(PERL) $(srctree)/scripts/export_report.pl
+
 endif #ifeq ($(config-targets),1)
 endif #ifeq ($(mixed-targets),1)
 
@@ -1490,8 +1510,8 @@ quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files))
       cmd_rmfiles = rm -f $(rm-files)
 
 
-a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
-	  $(NOSTDINC_FLAGS) $(CPPFLAGS) \
+a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \
+	  $(NOSTDINC_FLAGS) $(KBUILD_CPPFLAGS) \
 	  $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
 
 quiet_cmd_as_o_S = AS      $@