diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 231 |
1 files changed, 103 insertions, 128 deletions
@@ -15,18 +15,11 @@ noconfig_targets := menuconfig config oldconfig randconfig \ # the toplevel sourcedir ifndef top_srcdir -# make-3.79.1 didn't support MAKEFILE_LIST -# for building out-of-tree, users of make-3.79.1 still have to pass top_srcdir= -# to make: make -f /srcs/busybox/Makefile top_srcdir=/srcs/busybox -ifdef MAKEFILE_LIST -top_srcdir:=$(shell cd $(dir $(firstword $(MAKEFILE_LIST))) && pwd) -else -top_srcdir:=$(CURDIR) -endif +top_srcdir=$(CURDIR) endif # toplevel directory of the object-tree ifndef top_builddir -top_builddir:=$(CURDIR) +top_builddir=$(CURDIR) endif export srctree=$(top_srcdir) @@ -41,86 +34,79 @@ SRC_DIRS:=$(patsubst %,$(top_srcdir)/%,$(DIRS)) # That's our default target when none is given on the command line .PHONY: _all +_all: -_all: all +CONFIG_CONFIG_IN = $(top_srcdir)/Config.in -# see if we are in verbose mode -ifdef VERBOSE - CHECK_VERBOSE := -v - PACKAGE_BE_VERBOSE := $(VERBOSE) -endif -ifdef V - CHECK_VERBOSE := -v - PACKAGE_BE_VERBOSE := $(V) -endif +ifeq ($(KBUILD_SRC),) ifdef O ifeq ("$(origin O)", "command line") - PACKAGE_OUTPUTDIR := $(shell cd $(O) && pwd) - top_builddir := $(PACKAGE_OUTPUTDIR) + KBUILD_OUTPUT := $(O) + top_builddir := $(O) endif else # If no alternate output-dir was specified, we build in cwd - PACKAGE_OUTPUTDIR := $(top_builddir) +# We are using KBUILD_OUTPUT nevertheless to make sure that we create +# Rules.mak and the toplevel Makefile, in case they don't exist. + KBUILD_OUTPUT := $(top_builddir) endif -define check_gcc -$(if $(2),$(if $(shell $(CC) $(2) -S -o /dev/null -xc /dev/null > /dev/null 2>&1 && echo y),$(2),$(if $(3),$(3))),$(if $(3),$(3))) -endef - -define check_ld -$(if $(2),$(if $(shell $(LD) $(2) -o /dev/null -b binary /dev/null > /dev/null 2>&1 && echo y),$(shell echo \-Wl,$(2)),$(if $(3),$(3))),$(if $(3),$(3))) -endef - -####################################################################### -# make-3.79.1 doesn't support order-only prerequisites.. -ifeq ($(MAKE_VERSION),3.79.1) -|: $(^) ; +ifneq ($(strip $(HAVE_DOT_CONFIG)),y) +# pull in OS specific commands like cp, mkdir, etc. early +-include $(top_srcdir)/Rules.mak endif -####################################################################### - - -# Handle building out of tree -ifneq ($(top_builddir),$(top_srcdir)) -all_tree := $(patsubst %,$(top_builddir)/%,$(DIRS) scripts scripts/config include include/config) +# All object directories. +OBJ_DIRS := $(DIRS) +all_tree := $(patsubst %,$(top_builddir)/%,$(OBJ_DIRS) scripts scripts/config include) +all_tree: $(all_tree) $(all_tree): @mkdir -p "$@" -saved-output := $(PACKAGE_OUTPUTDIR) - -$(if $(wildcard $(PACKAGE_OUTPUTDIR)),, \ +ifneq ($(KBUILD_OUTPUT),) +# Invoke a second make in the output directory, passing relevant variables +# Check that the output directory actually exists +saved-output := $(KBUILD_OUTPUT) +KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) +$(if $(wildcard $(KBUILD_OUTPUT)),, \ $(error output directory "$(saved-output)" does not exist)) -.PHONY: $(filter $(noconfig_targets),$(MAKECMDGOALS)) +.PHONY: $(MAKECMDGOALS) + +$(filter-out _all,$(MAKECMDGOALS)) _all: $(KBUILD_OUTPUT)/Rules.mak $(KBUILD_OUTPUT)/Makefile all_tree + $(Q)$(MAKE) -C $(KBUILD_OUTPUT) \ + top_srcdir=$(top_srcdir) \ + top_builddir=$(top_builddir) \ + KBUILD_SRC=$(top_srcdir) \ + -f $(CURDIR)/Makefile $@ -$(PACKAGE_OUTPUTDIR)/Rules.mak: +$(KBUILD_OUTPUT)/Rules.mak: @echo > $@ @echo top_srcdir=$(top_srcdir) >> $@ - @echo top_builddir=$(PACKAGE_OUTPUTDIR) >> $@ - @echo include $$\(top_srcdir\)/Rules.mak >> $@ + @echo top_builddir=$(KBUILD_OUTPUT) >> $@ + @echo include $(top_srcdir)/Rules.mak >> $@ -$(PACKAGE_OUTPUTDIR)/Makefile: +$(KBUILD_OUTPUT)/Makefile: @echo > $@ @echo top_srcdir=$(top_srcdir) >> $@ - @echo top_builddir=$(PACKAGE_OUTPUTDIR) >> $@ - @echo PACKAGE_SOURCEDIR='$$(top_srcdir)' >> $@ - @echo include '$$(PACKAGE_SOURCEDIR)'/Makefile >> $@ + @echo top_builddir=$(KBUILD_OUTPUT) >> $@ + @echo KBUILD_SRC='$$(top_srcdir)' >> $@ + @echo include '$$(KBUILD_SRC)'/Makefile >> $@ +# Leave processing to above invocation of make +skip-makefile := 1 +endif # ifneq ($(KBUILD_OUTPUT),) +endif # ifeq ($(KBUILD_SRC),) -buildtree := $(all_tree) $(PACKAGE_OUTPUTDIR)/Rules.mak $(PACKAGE_OUTPUTDIR)/Makefile +ifeq ($(skip-makefile),) # We only need a copy of the Makefile for the config targets and reuse # the rest from the source directory, i.e. we do not cp ALL_MAKEFILES. -scripts/config/Makefile: $(top_srcdir)/scripts/config/Makefile | $(buildtree) - @cp $(top_srcdir)/scripts/config/Makefile $@ +scripts/config/Makefile: $(top_srcdir)/scripts/config/Makefile + cp $< $@ -else -all_tree := include/config -$(all_tree): - @mkdir -p "$@" -buildtree := $(all_tree) -endif # ifneq ($(PACKAGE_OUTPUTDIR),$(top_srcdir)) +_all: all help: @echo 'Cleaning:' @@ -151,44 +137,37 @@ help: @echo ' release - create a distribution tarball' @echo ' sizes - show size of all enabled busybox symbols' @echo - @echo 'Make flags:' - @echo ' V=<number> - print verbose make output (default: unset)' - @echo ' 0 print CC invocations' - @echo ' 1' - @echo ' 2 also print when make enters a directory' - @echo ' 3 also verbosely print shell invocations' --include $(top_srcdir)/Rules.mak + +include $(top_srcdir)/Rules.mak ifneq ($(strip $(HAVE_DOT_CONFIG)),y) + # Default target if none was requested explicitly -all: menuconfig ; +all: defconfig menuconfig -ifneq ($(filter-out $(noconfig_targets),$(MAKECMDGOALS)),) # warn if no configuration exists and we are asked to build a non-config target .config: @echo "" @echo "No $(top_builddir)/$@ found!" - @echo "Please refer to 'make help', section Configuration." + @echo "Please refer to 'make help', section Configuration." @echo "" @exit 1 -else -# Avoid implicit rule to kick in by using an empty command -.config: $(buildtree) ; -endif -endif # ifneq ($(strip $(HAVE_DOT_CONFIG)),y) - # configuration # --------------------------------------------------------------------------- -CONFIG_CONFIG_IN = $(top_srcdir)/Config.in - scripts/config/conf: scripts/config/Makefile $(Q)$(MAKE) -C scripts/config conf + -@if [ ! -f .config ] ; then \ + touch .config; \ + fi scripts/config/mconf: scripts/config/Makefile $(Q)$(MAKE) -C scripts/config ncurses conf mconf + -@if [ ! -f .config ] ; then \ + touch .config; \ + fi menuconfig: scripts/config/mconf @[ -f .config ] || make $(MAKEFLAGS) defconfig @@ -220,6 +199,7 @@ defconfig: scripts/config/conf @$(SED) -i -r -e "s/^(USING_CROSS_COMPILER|CONFIG_(DEBUG.*|STATIC|SELINUX|BUILD_(AT_ONCE|LIBBUSYBOX)|FEATURE_(DEVFS|FULL_LIBBUSYBOX|SHARED_BUSYBOX|MTAB_SUPPORT|CLEAN_UP|UDHCP_DEBUG)|INSTALL_NO_USR))=.*/# \1 is not set/" .config @./scripts/config/conf -o $(CONFIG_CONFIG_IN) + allbareconfig: scripts/config/conf @./scripts/config/conf -y $(CONFIG_CONFIG_IN) @$(SED) -i -r -e "s/^(USING_CROSS_COMPILER|CONFIG_(DEBUG|STATIC|SELINUX|DEVFSD|NC_GAPING_SECURITY_HOLE|BUILD_AT_ONCE)).*/# \1 is not set/" .config @@ -227,28 +207,19 @@ allbareconfig: scripts/config/conf @echo "CONFIG_FEATURE_BUFFERS_GO_ON_STACK=y" >> .config @./scripts/config/conf -o $(CONFIG_CONFIG_IN) -ifeq ($(strip $(HAVE_DOT_CONFIG)),y) +else # ifneq ($(strip $(HAVE_DOT_CONFIG)),y) -# Load all Config.in --include $(top_builddir)/.config.cmd +all: busybox busybox.links doc -endif # ifeq ($(strip $(HAVE_DOT_CONFIG)),y) +# In this section, we need .config +-include $(top_builddir)/.config.cmd +include $(patsubst %,%/Makefile.in, $(SRC_DIRS)) -include $(patsubst %,%/Makefile.in,$(SRC_DIRS)) +endif # ifneq ($(strip $(HAVE_DOT_CONFIG)),y) -ifeq ($(strip $(HAVE_DOT_CONFIG)),y) -# Finally pull in the dependencies (headers and other includes) of the -# individual object files +-include $(top_builddir)/.config -include $(top_builddir)/.depend -$(top_builddir)/applets/applets.o: $(top_builddir)/.config -# Everything is set. - -all: busybox busybox.links doc ; - -# Two modes of operation: legacy and IMA -# Legacy mode builds each object through an individual invocation of CC -# IMA compiles all sources at once (aka IPO aka IPA etc.) ifeq ($(strip $(CONFIG_BUILD_AT_ONCE)),y) libraries-y:= @@ -269,16 +240,18 @@ else # CONFIG_BUILD_AT_ONCE # This was the old way the binary was built. libbusybox-obj:=archival/libunarchive/libunarchive.a \ networking/libiproute/libiproute.a \ - libpwdgrp/libpwdgrp.a coreutils/libcoreutils/libcoreutils.a \ + libpwdgrp/libpwdgrp.a \ + coreutils/libcoreutils/libcoreutils.a \ libbb/libbb.a libbusybox-obj:=$(patsubst %,$(top_builddir)/%,$(libbusybox-obj)) + ifeq ($(strip $(CONFIG_FEATURE_SHARED_BUSYBOX)),y) # linking against libbusybox, so don't build the .a already contained in the .so libraries-y:=$(filter-out $(libbusybox-obj),$(libraries-y)) endif # CONFIG_FEATURE_SHARED_BUSYBOX - endif # CONFIG_BUILD_AT_ONCE + ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y) LD_LIBBUSYBOX:=libbusybox.so LIBBUSYBOX_SONAME:=$(LD_LIBBUSYBOX).$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL_VERSION) @@ -286,21 +259,17 @@ DO_INSTALL_LIBS:=$(LD_LIBBUSYBOX) \ $(LD_LIBBUSYBOX).$(MAJOR_VERSION) \ $(LD_LIBBUSYBOX).$(MAJOR_VERSION).$(MINOR_VERSION) -endif # CONFIG_BUILD_LIBBUSYBOX - ifeq ($(strip $(CONFIG_BUILD_AT_ONCE)),y) ifneq ($(strip $(CONFIG_FEATURE_SHARED_BUSYBOX)),y) -# --combine but not linking against libbusybox, so compile lib*.c +# --combine but not linking against libbusybox, so compile all BUSYBOX_SRC := $(LIBRARY_SRC) BUSYBOX_DEFINE:= $(LIBRARY_DEFINE) endif # !CONFIG_FEATURE_SHARED_BUSYBOX $(LIBBUSYBOX_SONAME): $(LIBRARY_SRC) else # CONFIG_BUILD_AT_ONCE $(LIBBUSYBOX_SONAME): $(libbusybox-obj) -AR_INTRO:=-Wl,--whole-archive -AR_EXTRO:=-Wl,--no-whole-archive endif # CONFIG_BUILD_AT_ONCE - +endif # CONFIG_BUILD_LIBBUSYBOX ifeq ($(strip $(CONFIG_FEATURE_SHARED_BUSYBOX)),y) LDBUSYBOX:=-L$(top_builddir) -lbusybox @@ -315,23 +284,20 @@ endif -Wl,-soname=$(LD_LIBBUSYBOX).$(MAJOR_VERSION) \ -Wl,-z,combreloc $(LIB_LDFLAGS) \ -o $(@) \ - -Wl,--start-group \ - $(LIBRARY_DEFINE) $(AR_INTRO) $(^) $(AR_EXTRO) \ - -Wl,--end-group + -Wl,--start-group -Wl,--whole-archive \ + $(LIBRARY_DEFINE) $(^) \ + -Wl,--no-whole-archive -Wl,--end-group @rm -f $(DO_INSTALL_LIBS) @for i in $(DO_INSTALL_LIBS); do ln -s $(@) $$i ; done $(do_strip) endif # ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y) -busybox_unstripped: $(top_builddir)/.depend $(LIBBUSYBOX_SONAME) $(BUSYBOX_SRC) $(APPLET_SRC) $(libraries-y) +busybox_unstripped: .depend $(LIBBUSYBOX_SONAME) $(BUSYBOX_SRC) $(libraries-y) $(do_link) $(PROG_CFLAGS) $(PROG_LDFLAGS) $(CFLAGS_COMBINE) \ - $(foreach f,$(^:.o=.c),$(CFLAGS-$(notdir $(patsubst %/$,%,$(dir $(f))))-$(notdir $(f)))) \ - $(CFLAGS-$(@)) \ - -o $@ -Wl,--start-group \ + -o $@ -Wl,--start-group \ $(APPLETS_DEFINE) $(APPLET_SRC) \ - $(BUSYBOX_DEFINE) $(BUSYBOX_SRC) \ - $(libraries-y) \ + $(BUSYBOX_DEFINE) $(BUSYBOX_SRC) $(libraries-y) \ $(LDBUSYBOX) $(LIBRARIES) \ -Wl,--end-group @@ -365,6 +331,17 @@ ifneq ($(strip $(DO_INSTALL_LIBS)),n) done endif +# see if we are in verbose mode +KBUILD_VERBOSE := +ifdef V + ifeq ("$(origin V)", "command line") + KBUILD_VERBOSE := $(V) + endif +endif +ifneq ($(strip $(KBUILD_VERBOSE)),) + CHECK_VERBOSE := -v +# ARFLAGS+=v +endif check test: busybox bindir=$(top_builddir) srcdir=$(top_srcdir)/testsuite \ $(top_srcdir)/testsuite/runtest $(CHECK_VERBOSE) @@ -373,7 +350,7 @@ sizes: busybox_unstripped $(NM) --size-sort $(<) # Documentation Targets -doc: docs/busybox.pod docs/BusyBox.txt docs/BusyBox.1 docs/BusyBox.html ; +doc: docs/busybox.pod docs/BusyBox.txt docs/BusyBox.1 docs/BusyBox.html docs/busybox.pod : $(top_srcdir)/docs/busybox_header.pod $(top_srcdir)/include/usage.h $(top_srcdir)/docs/busybox_footer.pod $(top_srcdir)/docs/autodocifier.pl $(disp_doc) @@ -407,7 +384,7 @@ docs/busybox.net/BusyBox.html: docs/busybox.pod # The nifty new dependency stuff scripts/bb_mkdep: $(top_srcdir)/scripts/bb_mkdep.c - $(do_link.h) + $(Q)$(HOSTCC) $(HOSTCFLAGS) -o $@ $< DEP_INCLUDES := include/bb_config.h @@ -419,21 +396,22 @@ include/bbconfigopts.h: .config $(Q)$(top_srcdir)/scripts/config/mkconfigs > $@ endif -depend dep: $(top_builddir)/.depend ; -$(top_builddir)/.depend: $(buildtree) scripts/bb_mkdep $(DEP_INCLUDES) +depend dep: .depend +.depend: scripts/bb_mkdep $(DEP_INCLUDES) $(disp_gen) $(Q)rm -f .depend - $(Q)scripts/bb_mkdep $(MKDEP_ARGS) \ - -I $(top_srcdir)/include $(top_srcdir) > $@.tmp + $(Q)mkdir -p include/config + $(Q)scripts/bb_mkdep -I $(top_srcdir)/include $(top_srcdir) > $@.tmp $(Q)mv $@.tmp $@ include/bb_config.h: .config - $(disp_gen) + @if [ ! -x $(top_builddir)/scripts/config/conf ] ; then \ + $(MAKE) -C scripts/config conf; \ + fi; @$(top_builddir)/scripts/config/conf -o $(CONFIG_CONFIG_IN) -endif # ifeq ($(strip $(HAVE_DOT_CONFIG)),y) - clean: + - $(MAKE) -C scripts/config $@ - rm -f docs/busybox.dvi docs/busybox.ps \ docs/busybox.pod docs/busybox.net/busybox.html \ docs/busybox pod2htm* *.gdb *.elf *~ core .*config.log \ @@ -446,10 +424,9 @@ clean: -o -name \*.os -o -name \*.osm -o -name \*.a | xargs rm -f distclean: clean - - $(MAKE) -C scripts/config clean - rm -f scripts/bb_mkdep - rm -r -f include/config $(DEP_INCLUDES) - - find . -name .depend'*' | xargs rm -f + - find . -name .depend'*' | xargs rm -f rm -f .config .config.old .config.cmd release: distclean #doc @@ -472,10 +449,8 @@ release: distclean #doc tags: ctags -R . -# keep these in sync with noconfig_targets above! -.PHONY: dummy subdirs check test depend dep buildtree \ - menuconfig config oldconfig randconfig \ - defconfig allyesconfig allnoconfig allbareconfig \ - clean distclean \ - release tags +endif # ifeq ($(skip-makefile),) + +.PHONY: dummy subdirs release distclean clean config oldconfig \ + menuconfig tags check test depend dep buildtree |