[PATCH] kbuild: add -Wundef to global CFLAGS

[deliverable/linux.git] / Makefile

diff --git a/Makefile b/Makefile
index 9cf07e7b9f88dc43da8c06dde1b949f50b479aac..423397f03921326922628b006309283332d2bffe 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -203,7 +203,7 @@ CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
 
 HOSTCC         = gcc
 HOSTCXX        = g++
-HOSTCFLAGS     = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
+HOSTCFLAGS     = -Wall -Wundef -Wstrict-prototypes -O2 -fomit-frame-pointer
 HOSTCXXFLAGS   = -O2
 
 #      Decide whether to build built-in, modular, or both.
@@ -348,7 +348,7 @@ LINUXINCLUDE    := -Iinclude \
 
 CPPFLAGS        := -D__KERNEL__ $(LINUXINCLUDE)
 
-CFLAGS                 := -Wall -Wstrict-prototypes -Wno-trigraphs \
+CFLAGS                 := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
                   -fno-strict-aliasing -fno-common \
                   -ffreestanding
 AFLAGS         := -D__ASSEMBLY__
@@ -722,6 +722,16 @@ quiet_cmd_kallsyms = KSYM    $@
 # Needs to visit scripts/ before $(KALLSYMS) can be used.
 $(KALLSYMS): scripts ;
 
+# Generate some data for debugging strange kallsyms problems
+debug_kallsyms: .tmp_map$(last_kallsyms)
+
+.tmp_map%: .tmp_vmlinux% FORCE
+       ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
+
+.tmp_map3: .tmp_map2
+
+.tmp_map2: .tmp_map1
+
 endif # ifdef CONFIG_KALLSYMS
 
 # vmlinux image - including updated kernel symbols
@@ -757,7 +767,7 @@ $(vmlinux-dirs): prepare-all scripts
 prepare2:
 ifneq ($(KBUILD_SRC),)
        @echo '  Using $(srctree) as source for kernel'
-       $(Q)if [ -h $(srctree)/include/asm -o -f $(srctree)/.config ]; then \
+       $(Q)if [ -f $(srctree)/.config ]; then \
                echo "  $(srctree) is not clean, please run 'make mrproper'";\
                echo "  in the '$(srctree)' directory.";\
                /bin/false; \
@@ -769,7 +779,8 @@ endif
 # prepare1 creates a makefile if using a separate output directory
 prepare1: prepare2 outputmakefile
 
-prepare0: prepare1 include/linux/version.h include/asm include/config/MARKER
+prepare0: prepare1 include/linux/version.h include/asm \
+                   include/config/MARKER
 ifneq ($(KBUILD_MODULES),)
        $(Q)rm -rf $(MODVERDIR)
        $(Q)mkdir -p $(MODVERDIR)
@@ -875,7 +886,7 @@ modules_install: _modinst_ _modinst_post
 
 .PHONY: _modinst_
 _modinst_:
-       @if [ -z "`$(DEPMOD) -V | grep module-init-tools`" ]; then \
+       @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
                echo "Warning: you may need to install module-init-tools"; \
                echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
                sleep 1; \
@@ -1159,28 +1170,34 @@ else
 __srctree = $(srctree)/
 endif
 
+ALLSOURCE_ARCHS := $(ARCH)
+
 define all-sources
        ( find $(__srctree) $(RCS_FIND_IGNORE) \
               \( -name include -o -name arch \) -prune -o \
               -name '*.[chS]' -print; \
-         find $(__srctree)arch/$(ARCH) $(RCS_FIND_IGNORE) \
-              -name '*.[chS]' -print; \
+         for ARCH in $(ALLSOURCE_ARCHS) ; do \
+              find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
+                   -name '*.[chS]' -print; \
+         done ; \
          find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
               -name '*.[chS]' -print; \
          find $(__srctree)include $(RCS_FIND_IGNORE) \
               \( -name config -o -name 'asm-*' \) -prune \
               -o -name '*.[chS]' -print; \
-         find $(__srctree)include/asm-$(ARCH) $(RCS_FIND_IGNORE) \
-              -name '*.[chS]' -print; \
+         for ARCH in $(ALLSOURCE_ARCHS) ; do \
+              find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
+                   -name '*.[chS]' -print; \
+         done ; \
          find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
               -name '*.[chS]' -print )
 endef
 
 quiet_cmd_cscope-file = FILELST cscope.files
-      cmd_cscope-file = $(all-sources) > cscope.files
+      cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
 
 quiet_cmd_cscope = MAKE    cscope.out
-      cmd_cscope = cscope -k -b -q
+      cmd_cscope = cscope -b
 
 cscope: FORCE
        $(call cmd,cscope-file)