diff options
author | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2006-03-13 22:04:00 +0300 |
---|---|---|
committer | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2006-03-13 22:04:00 +0300 |
commit | df10094870c28cc0c6c5577c9aa03b8ede9cb8a6 (patch) | |
tree | 49493696039b285aa751a5bc884fc70c9c85e878 /Rules.mak | |
parent | c5b1d4d6b14f22b5e2f7ae42eb01bf2746b8001c (diff) |
- revert back to r14406
Diffstat (limited to 'Rules.mak')
-rw-r--r-- | Rules.mak | 312 |
1 files changed, 109 insertions, 203 deletions
@@ -10,10 +10,6 @@ ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),) -include $(top_builddir)/.config endif -ifeq ($(HAVE_DOT_CONFIG),y) -rules-mak-rules:=0 -endif - #-------------------------------------------------------- PROG := busybox MAJOR_VERSION :=1 @@ -34,9 +30,8 @@ BUILDTIME := $(shell TZ=UTC date -u "+%Y.%m.%d-%H:%M%z") # If you are running a cross compiler, you will want to set 'CROSS' # to something more interesting... Target architecture is determined # by asking the CC compiler what arch it compiles things for, so unless -# your compiler is broken, you should not need to specify __TARGET_ARCH +# your compiler is broken, you should not need to specify TARGET_ARCH CROSS =$(subst ",, $(strip $(CROSS_COMPILER_PREFIX))) -#") CC = $(CROSS)gcc AR = $(CROSS)ar AS = $(CROSS)as @@ -45,18 +40,7 @@ NM = $(CROSS)nm STRIP = $(CROSS)strip CPP = $(CC) -E SED ?= sed -AWK ?= awk - -ifdef PACKAGE_BE_VERBOSE -PACKAGE_BE_VERBOSE := $(shell echo $(PACKAGE_BE_VERBOSE) | $(SED) "s/[[:alpha:]]*//g") -endif - -# for make V=3 and above make $(shell) invocations verbose -ifeq ($(if $(strip $(PACKAGE_BE_VERBOSE)),$(shell test $(PACKAGE_BE_VERBOSE) -gt 2 ; echo $$?),1),0) - SHELL+=-x - MKDEP_ARGS:=-w -endif # What OS are you compiling busybox for? This allows you to include # OS specific things, syscall overrides, etc. @@ -69,21 +53,10 @@ HOSTCFLAGS= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer # Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc. LC_ALL:= C -# initialize flags here -CFLAGS:= -CFLAGS_COMBINE:= -CFLAGS_PIC:= -LD_FLAGS:= -LIB_LDFLAGS:= -PROG_LDFLAGS:= -PROG_CFLAGS:= -OPTIMIZATIONS:= - # If you want to add some simple compiler switches (like -march=i686), # especially from the command line, use this instead of CFLAGS directly. -# For optimization overrides, it's better still to set OPTIMIZATIONS. +# For optimization overrides, it's better still to set OPTIMIZATION. CFLAGS_EXTRA=$(subst ",, $(strip $(EXTRA_CFLAGS_OPTIONS))) -#") # To compile vs some other alternative libc, you may need to use/adjust # the following lines to meet your needs... @@ -100,50 +73,20 @@ CFLAGS_EXTRA=$(subst ",, $(strip $(EXTRA_CFLAGS_OPTIONS))) #GCCINCDIR:=$(shell gcc -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp") WARNINGS=-Wall -Wstrict-prototypes -Wshadow -CFLAGS+=-I$(top_builddir)/include -I$(top_srcdir)/include +CFLAGS+=-I$(top_builddir)/include -I$(top_srcdir)/include -I$(srcdir) ARFLAGS=cru - -# Get the CC MAJOR/MINOR version # gcc centric. Perhaps fiddle with findstring gcc,$(CC) for the rest +# get the CC MAJOR/MINOR version CC_MAJOR:=$(shell printf "%02d" $(shell echo __GNUC__ | $(CC) -E -xc - | tail -n 1)) CC_MINOR:=$(shell printf "%02d" $(shell echo __GNUC_MINOR__ | $(CC) -E -xc - | tail -n 1)) -# Note: spaces are significant here! -# Check if CC version is equal to given MAJOR,MINOR. Returns empty if false. -define cc_eq -$(shell [ $(CC_MAJOR) -eq $(1) -a $(CC_MINOR) -eq $(2) ] && echo y) -endef -# Check if CC version is greater or equal than given MAJOR,MINOR -define cc_ge -$(shell [ $(CC_MAJOR) -ge $(1) -a $(CC_MINOR) -ge $(2) ] && echo y) -endef -# Check if CC version is less or equal than given MAJOR,MINOR -define cc_le -$(shell [ $(CC_MAJOR) -le $(1) -a $(CC_MINOR) -le $(2) ] && echo y) -endef - -# Workaround bugs in make-3.80 for eval in conditionals -define is_eq -$(shell [ $(1) = $(2) ] 2> /dev/null && echo y) -endef -define is_neq -$(shell [ $(1) != $(2) ] 2> /dev/null && echo y) -endef - #-------------------------------------------------------- export VERSION BUILDTIME HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP - -# TARGET_ARCH and TARGET_MACH will be passed verbatim to CC with recent -# versions of make, so we use __TARGET_ARCH here. -# Current builtin rules looks like that: -# COMPILE.s = $(AS) $(ASFLAGS) $(TARGET_MACH) -# COMPILE.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c - -ifeq ($(strip $(__TARGET_ARCH)),) -__TARGET_ARCH:=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \ +ifeq ($(strip $(TARGET_ARCH)),) +TARGET_ARCH:=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \ -e 's/i.86/i386/' \ -e 's/sparc.*/sparc/' \ -e 's/arm.*/arm/g' \ @@ -157,60 +100,70 @@ __TARGET_ARCH:=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \ ) endif -CFLAGS+=$(call check_gcc,CFLAGS,-funsigned-char,) -CFLAGS+=$(call check_gcc,CFLAGS,-mmax-stack-frame=256,) +# A nifty macro to make testing gcc features easier +check_gcc=$(shell \ + if [ "$(1)" != "" ]; then \ + if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \ + then echo "$(1)"; else echo "$(2)"; fi \ + fi) + +# A not very robust macro to check for available ld flags +check_ld=$(shell \ + if [ "x$(1)" != "x" ]; then \ + $(LD) --help | grep -q "\$(1)" && echo "-Wl,$(1)" ; \ + fi) + +CFLAGS+=$(call check_gcc,-funsigned-char,) + +CFLAGS+=$(call check_gcc,-mmax-stack-frame=256,) #-------------------------------------------------------- # Arch specific compiler optimization stuff should go here. # Unless you want to override the defaults, do not set anything -# for OPTIMIZATIONS... +# for OPTIMIZATION... # use '-Os' optimization if available, else use -O2 -OPTIMIZATIONS+=$(call check_gcc,OPTIMIZATIONS,-Os,-O2) +OPTIMIZATION:=$(call check_gcc,-Os,-O2) +ifeq ($(CONFIG_BUILD_AT_ONCE),y) # gcc 2.95 exits with 0 for "unrecognized option" -CFLAGS_COMBINE+=$(if $(call is_eq,$(CONFIG_BUILD_AT_ONCE),y),\ - $(if $(call cc_ge,3,0),\ - $(call check_gcc,CFLAGS_COMBINE,--combine,))) - -OPTIMIZATIONS+=$(if $(call is_eq,$(CONFIG_BUILD_AT_ONCE),y),\ - $(call check_gcc,OPTIMIZATIONS,-funit-at-a-time,)) - -# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25795 -#PROG_CFLAGS+=$(if $(call is_eq,$(CONFIG_BUILD_AT_ONCE),y),\ -# $(call check_gcc,PROG_CFLAGS,-fwhole-program,)) +ifeq ($(strip $(shell [ $(CC_MAJOR) -ge 3 ] ; echo $$?)),0) + CFLAGS_COMBINE:=$(call check_gcc,--combine,) +endif +OPTIMIZATION+=$(call check_gcc,-funit-at-a-time,) +PROG_CFLAGS+=$(call check_gcc,-fwhole-program,) +endif # CONFIG_BUILD_AT_ONCE -LIB_LDFLAGS+=$(call check_ld,LIB_LDFLAGS,--enable-new-dtags,) -#LIB_LDFLAGS+=$(call check_ld,LIB_LDFLAGS,--reduce-memory-overheads,) -#LIB_LDFLAGS+=$(call check_ld,LIB_LDFLAGS,--as-needed,) -#LIB_LDFLAGS+=$(call check_ld,LIB_LDFLAGS,--warn-shared-textrel,) +LIB_LDFLAGS:=$(call check_ld,--enable-new-dtags,) +#LIB_LDFLAGS+=$(call check_ld,--reduce-memory-overheads,) +#LIB_LDFLAGS+=$(call check_ld,--as-needed,) +#LIB_LDFLAGS+=$(call check_ld,--warn-shared-textrel,) -PROG_LDFLAGS+=$(call check_ld,PROG_LDFLAGS,--gc-sections,) # Some nice architecture specific optimizations -ifeq ($(__TARGET_ARCH),arm) - OPTIMIZATIONS+=-fstrict-aliasing -endif # arm - -OPTIMIZATIONS+=$(if $(call is_eq,$(__TARGET_ARCH),i386),\ - $(call check_gcc,OPTIMIZATIONS,-march=i386,)) - +ifeq ($(strip $(TARGET_ARCH)),arm) + OPTIMIZATION+=-fstrict-aliasing +endif +ifeq ($(strip $(TARGET_ARCH)),i386) + OPTIMIZATION+=$(call check_gcc,-march=i386,) # gcc-4.0 and older seem to benefit from these -OPTIMIZATIONS+=$(if $(call cc_le,4,0),\ - $(call check_gcc,OPTIMIZATIONS,-mpreferred-stack-boundary=2,)\ - $(call check_gcc,OPTIMIZATIONS,-falign-functions=1 -falign-jumps=1 -falign-loops=1,\ - -malign-functions=0 -malign-jumps=0 -malign-loops=0)) +#ifneq ($(strip $(shell [ $(CC_MAJOR) -ge 4 -a $(CC_MINOR) -ge 1 ] ; echo $$?)),0) + OPTIMIZATION+=$(call check_gcc,-mpreferred-stack-boundary=2,) + OPTIMIZATION+=$(call check_gcc,-falign-functions=1 -falign-jumps=1 -falign-loops=1,\ + -malign-functions=0 -malign-jumps=0 -malign-loops=0) +#endif # gcc-4.0 and older # gcc-4.1 and beyond seem to benefit from these -# turn off flags which hurt -Os -OPTIMIZATIONS+=$(if $(call cc_ge,4,1),\ - $(call check_gcc,OPTIMIZATIONS,-fno-tree-loop-optimize,)\ - $(call check_gcc,OPTIMIZATIONS,-fno-tree-dominator-opts,)\ - $(call check_gcc,OPTIMIZATIONS,-fno-strength-reduce,)\ -\ - $(call check_gcc,OPTIMIZATIONS,-fno-branch-count-reg,)) - -OPTIMIZATIONS+=$(call check_gcc,OPTIMIZATIONS,-fomit-frame-pointer,) +ifeq ($(strip $(shell [ $(CC_MAJOR) -ge 4 -a $(CC_MINOR) -ge 1 ] ; echo $$?)),0) + # turn off flags which hurt -Os + OPTIMIZATION+=$(call check_gcc,-fno-tree-loop-optimize,) + OPTIMIZATION+=$(call check_gcc,-fno-tree-dominator-opts,) + OPTIMIZATION+=$(call check_gcc,-fno-strength-reduce,) + + OPTIMIZATION+=$(call check_gcc,-fno-branch-count-reg,) +endif # gcc-4.1 and beyond +endif +OPTIMIZATIONS:=$(OPTIMIZATION) $(call check_gcc,-fomit-frame-pointer,) # #-------------------------------------------------------- @@ -221,42 +174,45 @@ OPTIMIZATIONS+=$(call check_gcc,OPTIMIZATIONS,-fomit-frame-pointer,) # prone to casual user adjustment. # -ifeq ($(CONFIG_LFS),y) +ifeq ($(strip $(CONFIG_LFS)),y) # For large file summit support CFLAGS+=-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 endif -ifeq ($(CONFIG_DMALLOC),y) +ifeq ($(strip $(CONFIG_DMALLOC)),y) # For testing mem leaks with dmalloc CFLAGS+=-DDMALLOC LIBRARIES:=-ldmalloc else - ifeq ($(CONFIG_EFENCE),y) + ifeq ($(strip $(CONFIG_EFENCE)),y) LIBRARIES:=-lefence endif endif - -LDFLAGS+=$(if $(call is_eq,$(CONFIG_DEBUG),y),$(call check_ld,LDFLAGS,--warn-common,)$(call check_ld,LDFLAGS,--sort-common,)) -ifeq ($(CONFIG_DEBUG),y) +ifeq ($(strip $(CONFIG_DEBUG)),y) CFLAGS +=$(WARNINGS) -g -D_GNU_SOURCE + LDFLAGS += $(call check_ld,--warn-common,) else CFLAGS+=$(WARNINGS) $(OPTIMIZATIONS) -D_GNU_SOURCE -DNDEBUG + LDFLAGS += $(call check_ld,--warn-common,) + LDFLAGS += $(call check_ld,--sort-common,) endif ifeq ($(CONFIG_STRIP_BINARIES),y) STRIPCMD:=$(STRIP) -s --remove-section=.note --remove-section=.comment else STRIPCMD:=/bin/true -Not_stripping_since_we_are_debugging endif -PROG_CFLAGS+=$(if $(call is_eq,$(CONFIG_STATIC),y),\ - $(call check_gcc,PROG_CFLAGS,-static,)) - -CFLAGS_SHARED+=$(call check_gcc,CFLAGS_SHARED,-shared,) +ifeq ($(strip $(CONFIG_STATIC)),y) + PROG_CFLAGS += $(call check_gcc,-static,) +endif +CFLAGS_SHARED += $(call check_gcc,-shared,) LIB_CFLAGS+=$(CFLAGS_SHARED) -CFLAGS_PIC+=$(if $(call is_eq,$(CONFIG_BUILD_LIBBUSYBOX),y),\ - $(call check_gcc,CFLAGS_PIC,-fPIC,)) -LIB_CFLAGS+=$(CFLAGS_PIC) +ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y) + CFLAGS_PIC:= $(call check_gcc,-fPIC,) + LIB_CFLAGS+=$(CFLAGS_PIC) +endif + -ifeq ($(CONFIG_SELINUX),y) +ifeq ($(strip $(CONFIG_SELINUX)),y) LIBRARIES += -lselinux endif @@ -264,6 +220,14 @@ ifeq ($(strip $(PREFIX)),) PREFIX:=`pwd`/_install endif +# Additional complications due to support for pristine source dir. +# Include files in the build directory should take precedence over +# the copy in top_srcdir, both during the compilation phase and the +# shell script that finds the list of object files. +# Work in progress by <ldoolitt@recycle.lbl.gov>. + + +OBJECTS:=$(APPLET_SOURCES:.c=.o) busybox.o usage.o applets.o CFLAGS += $(CROSS_CFLAGS) ifdef BB_INIT_SCRIPT CFLAGS += -DINIT_SCRIPT='"$(BB_INIT_SCRIPT)"' @@ -285,117 +249,59 @@ ifeq ($(strip $(CONFIG_INSTALL_APPLET_DONT)),y) INSTALL_OPTS= endif - -#------------------------------------------------------------ -# object extensions - -# object potentially used in shared object -ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y) -# single-object extension -os:=.os -# multi-object extension -om:=.osm -else -os:=.o -om:=.om -endif - #------------------------------------------------------------ # Make the output nice and tight - -# for make V=2 and above, do print directory -ifneq ($(shell test -n "$(strip $(PACKAGE_BE_VERBOSE))" && test $(PACKAGE_BE_VERBOSE) -gt 1 ; echo $$?),0) - MAKEFLAGS += --no-print-directory -endif - -export MAKEOVERRIDES +MAKEFLAGS += --no-print-directory export MAKE_IS_SILENT=n ifneq ($(findstring s,$(MAKEFLAGS)),) export MAKE_IS_SILENT=y +SECHO := @-false DISP := sil Q := @ else ifneq ($(V)$(VERBOSE),) +SECHO := @-false DISP := ver Q := else +SECHO := @echo DISP := pur Q := @ endif endif -define show_objs - $(subst $(top_builddir)/,,$(subst ../,,$@)) -endef -pur_disp_compile.c = @echo " "CC $(show_objs) ; -pur_disp_compile.h = @echo " "HOSTCC $(show_objs) ; -pur_disp_strip = @echo " "STRIP $(show_objs) ; -pur_disp_link = @echo " "LINK $(show_objs) ; -pur_disp_link.h = @echo " "HOSTLINK $(show_objs) ; -pur_disp_ar = @echo " "AR $(ARFLAGS) $(show_objs) ; -pur_disp_gen = @echo " "GEN $@ ; -pur_disp_doc = @echo " "DOC $(subst docs/,,$@) ; -pur_disp_bin = @echo " "BIN $(show_objs) ; -sil_disp_compile.c = @ -sil_disp_compile.h = @ -sil_disp_strip = @ -sil_disp_link = @ -sil_disp_link.h = @ -sil_disp_ar = @ -sil_disp_gen = @ -sil_disp_doc = @ -sil_disp_bin = @ -ver_disp_compile.c = -ver_disp_compile.h = -ver_disp_strip = -ver_disp_link = -ver_disp_link.h = -ver_disp_ar = -ver_disp_gen = -ver_disp_doc = -ver_disp_bin = +show_objs = $(subst $(top_builddir)/,,$(subst ../,,$@)) +pur_disp_compile.c = echo " "CC $(show_objs) +pur_disp_compile.h = echo " "HOSTCC $(show_objs) +pur_disp_strip = echo " "STRIP $(show_objs) +pur_disp_link = echo " "LINK $(show_objs) +pur_disp_ar = echo " "AR $(ARFLAGS) $(show_objs) +sil_disp_compile.c = true +sil_disp_compile.h = true +sil_disp_strip = true +sil_disp_link = true +sil_disp_ar = true +ver_disp_compile.c = echo $(cmd_compile.c) +ver_disp_compile.h = echo $(cmd_compile.h) +ver_disp_strip = echo $(cmd_strip) +ver_disp_link = echo $(cmd_link) +ver_disp_ar = echo $(cmd_ar) disp_compile.c = $($(DISP)_disp_compile.c) disp_compile.h = $($(DISP)_disp_compile.h) disp_strip = $($(DISP)_disp_strip) disp_link = $($(DISP)_disp_link) -disp_link.h = $($(DISP)_disp_link.h) disp_ar = $($(DISP)_disp_ar) -disp_gen = $($(DISP)_disp_gen) -disp_doc = $($(DISP)_disp_doc) -disp_bin = $($(DISP)_disp_bin) -# CFLAGS-dir == $(CFLAGS-$(notdir $(@D))) -# CFLAGS-dir-file.o == $(CFLAGS-$(notdir $(@D))-$(notdir $(@F))) -# CFLAGS-dir-file.c == $(CFLAGS-$(notdir $(<D))-$(notdir $(<F))) -# all prerequesites == $(foreach fil,$^,$(CFLAGS-$(notdir $(patsubst %/$,%,$(dir $(fil))))-$(notdir $(fil)))) -cmd_compile.c = $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -I$(srcdir) -c -o $@ $< \ - $(foreach f,$^,$(CFLAGS-$(notdir $(patsubst %/$,%,$(dir $(f))))-$(notdir $(f)))) \ - $(CFLAGS-$(notdir $(@D))-$(notdir $(@F))) \ - $(CFLAGS-$(notdir $(@D))) -cmd_compile.m = $(cmd_compile.c) -DL_$(patsubst %$(suffix $(notdir $@)),%,$(notdir $@)) +disp_gen = $(SECHO) " "GEN $@ ; true +disp_doc = $(SECHO) " "DOC $(subst docs/,,$@) ; true +cmd_compile.c = $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -c -o $@ $< cmd_compile.h = $(HOSTCC) $(HOSTCFLAGS) -c -o $@ $< cmd_strip = $(STRIPCMD) $@ -cmd_link = $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -I$(srcdir) $(LDFLAGS) -cmd_link.h = $(HOSTCC) $(HOSTCFLAGS) $(HOST_LDFLAGS) $^ -o $@ +cmd_link = $(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(LDFLAGS) cmd_ar = $(AR) $(ARFLAGS) $@ $^ -compile.c = $(disp_compile.c) $(cmd_compile.c) -compile.m = $(disp_compile.c) $(cmd_compile.m) -compile.h = $(disp_compile.h) $(cmd_compile.h) -do_strip = $(disp_strip) $(cmd_strip) -do_link = $(disp_link) $(cmd_link) -do_link.h = $(disp_link.h) $(cmd_link.h) -do_ar = $(disp_ar) $(cmd_ar) - -ifdef rules-mak-rules -.SUFFIXES: .c .S .o .os .om .osm .oS .so .a .s .i .E - -# generic rules -%.o: ; $(compile.c) -%.os: ; $(compile.c) $(CFLAGS_PIC) -%.om: ; $(compile.m) -%.osm: ; $(compile.m) $(CFLAGS_PIC) -%.a: ; $(do_ar) - -endif # rules-mak-rules +compile.c = @$(disp_compile.c) ; $(cmd_compile.c) +compile.h = @$(disp_compile.h) ; $(cmd_compile.h) +do_strip = @$(disp_strip) ; $(cmd_strip) +do_link = @$(disp_link) ; $(cmd_link) +do_ar = @$(disp_ar) ; $(cmd_ar) .PHONY: dummy - |