Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild

* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild:
  kbuild: fix first module build
  kconfig: update kconfig-language text
  kbuild: introduce cc-cross-prefix
  kbuild: disable depmod in cross-compile kernel build
  kbuild: make deb-pkg - add 'Provides:' line
  kconfig: comment typo in scripts/kconfig/Makefile.
  kbuild: stop docproc segfaulting when SRCTREE isn't set.
  kbuild: modpost problem when symbols move from one module to another
  kbuild: cscope - filter out .tmp_* in find_sources
  kbuild: mailing list has moved
  kbuild: check asm symlink when building a kernel

1 files changed, 38 insertions, 33 deletions

diff --git a/Makefile b/Makefile
index 68ef80b3034..f9c264e243a 100644
--- a/Makefile
+++ b/Makefile
@@ -887,10 +887,7 @@ prepare2: prepare3 outputmakefile
 
 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)/*
-endif
+	$(cmd_crmodverdir)
 
 archprepare: prepare1 scripts_basic
 
@@ -906,14 +903,24 @@ prepare: prepare0
 
 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
 
-# FIXME: The asm symlink changes when $(ARCH) changes. That's
-# hard to detect, but I suppose "make mrproper" is a good idea
-# before switching between archs anyway.
-
-include/asm:
-	@echo '  SYMLINK $@ -> include/asm-$(SRCARCH)'
-	$(Q)if [ ! -d include ]; then mkdir -p include; fi;
-	@ln -fsn asm-$(SRCARCH) $@
+# The asm symlink changes when $(ARCH) changes.
+# Detect this and ask user to run make mrproper
+
+include/asm: FORCE
+	$(Q)set -e; asmlink=`readlink include/asm | cut -d '-' -f 2`;   \
+	if [ -L include/asm ]; then                                     \
+		if [ "$$asmlink" != "$(SRCARCH)" ]; then                \
+			echo "ERROR: the symlink $@ points to asm-$$asmlink but asm-$(SRCARCH) was expected"; \
+			echo "       set ARCH or save .config and run 'make mrproper' to fix it";             \
+			exit 1;                                         \
+		fi;                                                     \
+	else                                                            \
+		echo '  SYMLINK $@ -> include/asm-$(SRCARCH)';          \
+		if [ ! -d include ]; then                               \
+			mkdir -p include;                               \
+		fi;                                                     \
+		ln -fsn asm-$(SRCARCH) $@;                              \
+	fi
 
 # Generate some files
 # ---------------------------------------------------------------------------
@@ -1023,19 +1030,12 @@ _modinst_:
 	fi
 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
 
-# If System.map exists, run depmod.  This deliberately does not have a
-# dependency on System.map since that would run the dependency tree on
-# vmlinux.  This depmod is only for convenience to give the initial
+# This depmod is only for convenience to give the initial
 # boot a modules.dep even before / is mounted read-write.  However the
 # boot script depmod is the master version.
-ifeq "$(strip $(INSTALL_MOD_PATH))" ""
-depmod_opts	:=
-else
-depmod_opts	:= -b $(INSTALL_MOD_PATH) -r
-endif
 PHONY += _modinst_post
 _modinst_post: _modinst_
-	if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
+	$(call cmd,depmod)
 
 else # CONFIG_MODULES
 
@@ -1223,8 +1223,7 @@ else # KBUILD_EXTMOD
 KBUILD_MODULES := 1
 PHONY += crmodverdir
 crmodverdir:
-	$(Q)mkdir -p $(MODVERDIR)
-	$(Q)rm -f $(MODVERDIR)/*
+	$(cmd_crmodverdir)
 
 PHONY += $(objtree)/Module.symvers
 $(objtree)/Module.symvers:
@@ -1252,15 +1251,6 @@ _emodinst_:
 	$(Q)mkdir -p $(MODLIB)/$(install-dir)
 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
 
-# Run depmod only is we have System.map and depmod is executable
-quiet_cmd_depmod = DEPMOD  $(KERNELRELEASE)
-      cmd_depmod = 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
-
 PHONY += _emodinst_post
 _emodinst_post: _emodinst_
 	$(call cmd,depmod)
@@ -1344,7 +1334,7 @@ define find-sources
 	  find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
 	       -name $1 -print; \
 	  find $(__srctree) $(RCS_FIND_IGNORE) \
-	       \( -name include -o -name arch \) -prune -o \
+	       \( -name include -o -name arch -o -name '.tmp_*' \) -prune -o \
 	       -name $1 -print; \
 	  )
 endef
@@ -1493,9 +1483,11 @@ endif
 
 # Modules
 / %/: prepare scripts FORCE
+	$(cmd_crmodverdir)
 	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
 	$(build)=$(build-dir)
 %.ko: prepare scripts FORCE
+	$(cmd_crmodverdir)
 	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
 	$(build)=$(build-dir) $(@:.ko=.o)
 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
@@ -1509,6 +1501,19 @@ quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
       cmd_rmfiles = rm -f $(rm-files)
 
+# Run depmod only is we have System.map and depmod is executable
+# 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 \
+		$(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)/*
+
 
 a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \
 	  $(NOSTDINC_FLAGS) $(KBUILD_CPPFLAGS) \