emo/busybox
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

- add target hosttools (see make help)

Browse Source 
- rename check_gcc to check_cc and pass the CC to use as arg#1; peruse check_cc for HOSTCFLAGS
- add and use check_strip
- add checks for {,no-}whole-archive and {start,end}-group LD flags
This commit is contained in:
Bernhard Reutner-Fischer 2006-05-26 13:22:57 +00:00
parent 6d0dbeb550
commit e28d1d6fdc
2 changed files with 141 additions and 64 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
Makefile
View File

@ -8,7 +8,7 @@
#-------------------------------------------------------------- #--------------------------------------------------------------
# You shouldn't need to mess with anything beyond this point... # You shouldn't need to mess with anything beyond this point...
#-------------------------------------------------------------- #--------------------------------------------------------------
noconfig_targets := menuconfig config oldconfig randconfig \ noconfig_targets := menuconfig config oldconfig randconfig hosttools \
defconfig allyesconfig allnoconfig allbareconfig \ defconfig allyesconfig allnoconfig allbareconfig \
clean distclean help \ clean distclean help \
release tags release tags
@ -126,6 +126,10 @@ help:
@echo ' defconfig - set .config to largest generic configuration' @echo ' defconfig - set .config to largest generic configuration'
@echo ' menuconfig - interactive curses-based configurator' @echo ' menuconfig - interactive curses-based configurator'
@echo ' oldconfig - resolve any unresolved symbols in .config' @echo ' oldconfig - resolve any unresolved symbols in .config'
@echo ' hosttools - build sed for the host.'
@echo ' You can use these commands if the commands on the host'
@echo ' is unusable. Afterwards use it like:'
@echo ' make SED="$(top_builddir)/sed"'
@echo @echo
@echo 'Installation:' @echo 'Installation:'
@echo ' install - install busybox into $(PREFIX)' @echo ' install - install busybox into $(PREFIX)'
@ -210,6 +214,18 @@ allbareconfig: scripts/config/conf
@echo "CONFIG_FEATURE_BUFFERS_GO_ON_STACK=y" >> .config @echo "CONFIG_FEATURE_BUFFERS_GO_ON_STACK=y" >> .config
@yes n | ./scripts/config/conf -o $(CONFIG_CONFIG_IN) > /dev/null @yes n | ./scripts/config/conf -o $(CONFIG_CONFIG_IN) > /dev/null
hosttools:
$(Q)cp .config .config.bak || noold=yea
$(Q)$(MAKE) CC="$(HOSTCC)" CFLAGS="$(HOSTCFLAGS) $(INCS)" allnoconfig
$(Q)mv .config .config.in
$(Q)(grep -v CONFIG_SED .config.in ; \
echo "CONFIG_SED=y" ; ) > .config
$(Q)$(MAKE) CC="$(HOSTCC)" CFLAGS="$(HOSTCFLAGS) $(INCS)" oldconfig include/bb_config.h
$(Q)$(MAKE) CC="$(HOSTCC)" CFLAGS="$(HOSTCFLAGS) $(INCS)" busybox
$(Q)[ -f .config.bak ] && mv .config.bak .config || rm .config
mv busybox sed
@echo "Now do: $(MAKE) SED=$(top_builddir)/sed <target>"
else # ifneq ($(strip $(HAVE_DOT_CONFIG)),y) else # ifneq ($(strip $(HAVE_DOT_CONFIG)),y)
all: busybox busybox.links doc all: busybox busybox.links doc
@ -287,9 +303,9 @@ endif
-Wl,-soname=$(LD_LIBBUSYBOX).$(MAJOR_VERSION) \ -Wl,-soname=$(LD_LIBBUSYBOX).$(MAJOR_VERSION) \
-Wl,-z,combreloc $(LIB_LDFLAGS) \ -Wl,-z,combreloc $(LIB_LDFLAGS) \
-o $(@) \ -o $(@) \
-Wl,--start-group -Wl,--whole-archive \ $(LD_START_GROUP) $(LD_WHOLE_ARCHIVE) \
$(LIBRARY_DEFINE) $(^) \ $(LIBRARY_DEFINE) $(^) \
-Wl,--no-whole-archive -Wl,--end-group $(LD_NO_WHOLE_ARCHIVE) $(LD_END_GROUP)
@rm -f $(DO_INSTALL_LIBS) @rm -f $(DO_INSTALL_LIBS)
@for i in $(DO_INSTALL_LIBS); do ln -s $(@) $$i ; done @for i in $(DO_INSTALL_LIBS); do ln -s $(@) $$i ; done
$(do_strip) $(do_strip)
@ -298,11 +314,11 @@ endif # ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y)
busybox_unstripped: .depend $(LIBBUSYBOX_SONAME) $(BUSYBOX_SRC) $(APPLET_SRC) $(libraries-y) busybox_unstripped: .depend $(LIBBUSYBOX_SONAME) $(BUSYBOX_SRC) $(APPLET_SRC) $(libraries-y)
$(do_link) $(PROG_CFLAGS) $(PROG_LDFLAGS) $(CFLAGS_COMBINE) \ $(do_link) $(PROG_CFLAGS) $(PROG_LDFLAGS) $(CFLAGS_COMBINE) \
-o $@ -Wl,--start-group \ -o $@ $(LD_START_GROUP) \
$(APPLETS_DEFINE) $(APPLET_SRC) \ $(APPLETS_DEFINE) $(APPLET_SRC) \
$(BUSYBOX_DEFINE) $(BUSYBOX_SRC) $(libraries-y) \ $(BUSYBOX_DEFINE) $(BUSYBOX_SRC) $(libraries-y) \
$(LDBUSYBOX) $(LIBRARIES) \ $(LDBUSYBOX) $(LIBRARIES) \
-Wl,--end-group $(LD_END_GROUP)
busybox: busybox_unstripped busybox: busybox_unstripped
$(Q)cp busybox_unstripped busybox $(Q)cp busybox_unstripped busybox
@ -349,8 +365,8 @@ ifneq ($(strip $(KBUILD_VERBOSE)),)
# ARFLAGS+=v # ARFLAGS+=v
endif endif
check test: busybox check test: busybox
bindir=$(top_builddir) srcdir=$(top_srcdir)/testsuite \ bindir=$(top_builddir) srcdir=$(top_srcdir)/testsuite SED="$(SED)" \
$(top_srcdir)/testsuite/runtest $(CHECK_VERBOSE) $(SHELL) $(top_srcdir)/testsuite/runtest $(CHECK_VERBOSE)
.PHONY: checkhelp .PHONY: checkhelp
checkhelp: checkhelp:
@ -422,7 +438,7 @@ $(USAGE_BIN): $(top_srcdir)/scripts/usage.c
DEP_INCLUDES += include/usage_compressed.h DEP_INCLUDES += include/usage_compressed.h
include/usage_compressed.h: .config $(USAGE_BIN) include/usage_compressed.h: .config $(USAGE_BIN)
$(Q)$(SHELL) $(top_srcdir)/scripts/usage_compressed "$(top_builddir)/scripts" > $@ $(Q)SED="$(SED)" $(SHELL) $(top_srcdir)/scripts/usage_compressed "$(top_builddir)/scripts" > $@
endif # CONFIG_FEATURE_COMPRESS_USAGE endif # CONFIG_FEATURE_COMPRESS_USAGE
# workaround alleged bug in make-3.80, make-3.81 # workaround alleged bug in make-3.80, make-3.81
@ -486,4 +502,4 @@ tags:
endif # ifeq ($(skip-makefile),) endif # ifeq ($(skip-makefile),)
.PHONY: dummy subdirs release distclean clean config oldconfig \ .PHONY: dummy subdirs release distclean clean config oldconfig \
menuconfig tags check test depend dep buildtree menuconfig tags check test depend dep buildtree hosttools

171
Rules.mak
View File

@ -31,7 +31,8 @@ BUILDTIME := $(shell TZ=UTC date -u "+%Y.%m.%d-%H:%M%z")
# to something more interesting... Target architecture is determined # to something more interesting... Target architecture is determined
# by asking the CC compiler what arch it compiles things for, so unless # by asking the CC compiler what arch it compiles things for, so unless
# your compiler is broken, you should not need to specify TARGET_ARCH # your compiler is broken, you should not need to specify TARGET_ARCH
CROSS =$(subst ",, $(strip $(CROSS_COMPILER_PREFIX))) CROSS =$(strip $(subst ",, $(strip $(CROSS_COMPILER_PREFIX))))
# be gentle to vi coloring.. "))
CC = $(CROSS)gcc CC = $(CROSS)gcc
AR = $(CROSS)ar AR = $(CROSS)ar
AS = $(CROSS)as AS = $(CROSS)as
@ -41,16 +42,13 @@ STRIP = $(CROSS)strip
ELF2FLT = $(CROSS)elf2flt ELF2FLT = $(CROSS)elf2flt
CPP = $(CC) -E CPP = $(CC) -E
SED ?= sed SED ?= sed
BZIP2 ?= bzip2
# What OS are you compiling busybox for? This allows you to include # What OS are you compiling busybox for? This allows you to include
# OS specific things, syscall overrides, etc. # OS specific things, syscall overrides, etc.
TARGET_OS=linux TARGET_OS=linux
# Select the compiler needed to build binaries for your development system
HOSTCC = gcc
HOSTCFLAGS= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
# Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc. # Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc.
LC_ALL:= C LC_ALL:= C
@ -71,7 +69,7 @@ CFLAGS_EXTRA=$(subst ",, $(strip $(EXTRA_CFLAGS_OPTIONS)))
#LDFLAGS+=-nostdlib #LDFLAGS+=-nostdlib
#LIBRARIES:=$(LIBCDIR)/lib/libc.a -lgcc #LIBRARIES:=$(LIBCDIR)/lib/libc.a -lgcc
#CROSS_CFLAGS+=-nostdinc -I$(LIBCDIR)/include -I$(GCCINCDIR) -funsigned-char #CROSS_CFLAGS+=-nostdinc -I$(LIBCDIR)/include -I$(GCCINCDIR) -funsigned-char
#GCCINCDIR:=$(shell gcc -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp") #GCCINCDIR:=$(shell gcc -print-search-dirs | $(SED) -ne "s/install: \(.*\)/\1include/gp")
# This must bind late because srcdir is reset for every source subdirectory. # This must bind late because srcdir is reset for every source subdirectory.
INCS:=-I$(top_builddir)/include -I$(top_srcdir)/include INCS:=-I$(top_builddir)/include -I$(top_srcdir)/include
@ -79,11 +77,6 @@ CFLAGS=$(INCS) -I$(srcdir) -D_GNU_SOURCE
CFLAGS+=$(CHECKED_CFLAGS) CFLAGS+=$(CHECKED_CFLAGS)
ARFLAGS=cru ARFLAGS=cru
# Warnings
CFLAGS += -Wall -Wstrict-prototypes -Wshadow
LDFLAGS += $(call check_ld,--warn-common,)
# gcc centric. Perhaps fiddle with findstring gcc,$(CC) for the rest # gcc centric. Perhaps fiddle with findstring gcc,$(CC) for the rest
# get the CC MAJOR/MINOR version # get the CC MAJOR/MINOR version
CC_MAJOR:=$(shell printf "%02d" $(shell echo __GNUC__ | $(CC) -E -xc - | tail -n 1)) CC_MAJOR:=$(shell printf "%02d" $(shell echo __GNUC__ | $(CC) -E -xc - | tail -n 1))
@ -92,7 +85,7 @@ CC_MINOR:=$(shell printf "%02d" $(shell echo __GNUC_MINOR__ | $(CC) -E -xc - | t
#-------------------------------------------------------- #--------------------------------------------------------
export VERSION BUILDTIME HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP export VERSION BUILDTIME HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP
ifeq ($(strip $(TARGET_ARCH)),) ifeq ($(strip $(TARGET_ARCH)),)
TARGET_ARCH:=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \ TARGET_ARCH:=$(shell $(CC) -dumpmachine | $(SED) -e s'/-.*//' \
-e 's/i.86/i386/' \ -e 's/i.86/i386/' \
-e 's/sparc.*/sparc/' \ -e 's/sparc.*/sparc/' \
-e 's/arm.*/arm/g' \ -e 's/arm.*/arm/g' \
@ -107,27 +100,90 @@ TARGET_ARCH:=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \
endif endif
# A nifty macro to make testing gcc features easier, but note that everything # A nifty macro to make testing gcc features easier, but note that everything
# that uses this _must_ use := or it will be re-evaluated for every file. # that uses this _must_ use := or it will be re-evaluated everytime it is
# referenced.
ifeq ($(strip $(V)),2) ifeq ($(strip $(V)),2)
VERBOSE_CHECK_GCC=echo check_gcc $(1) >> /dev/stderr; VERBOSE_CHECK_CC=echo CC=\"$(1)\" check_cc $(2) >&2;
endif endif
check_gcc=$(shell \ check_cc=$(shell \
$(VERBOSE_CHECK_GCC)\ $(VERBOSE_CHECK_CC) \
if [ "$(1)" != "" ]; then \ if [ "x$(1)" != "x" ] && [ "x$(2)" != "x" ]; then \
if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \ echo "int i;" > ./conftest.c; \
then echo "$(1)"; else echo "$(2)"; fi \ if $(1) $(2) -c -o conftest.o conftest.c > /dev/null 2>&1; \
then echo "$(2)"; else echo "$(3)"; fi ; \
rm -f conftest.c conftest.o; \
fi) fi)
# A not very robust macro to check for available ld flags # A not very robust macro to check for available ld flags
ifeq ($(strip $(V)),2)
VERBOSE_CHECK_LD=echo LD=\"$(1)\" check_ld $(2) >&2;
endif
check_ld=$(shell \ check_ld=$(shell \
if [ "x$(1)" != "x" ]; then \ $(VERBOSE_CHECK_LD) \
$(LD) --help | grep -q "\$(1)" && echo "-Wl,$(1)" ; \ if [ "x$(1)" != "x" ] && [ "x$(2)" != "x" ]; then \
$(1) -o /dev/null -b binary /dev/null > /dev/null 2>&1 && \
echo "-Wl,$(2)" ; \
fi) fi)
# A not very robust macro to check for available strip flags
ifeq ($(strip $(V)),2)
VERBOSE_CHECK_STRIP=echo STRIPCMD=\"$(1)\" check_strip $(2) >&2;
endif
check_strip=$(shell \
$(VERBOSE_CHECK_STRIP) \
if [ "x$(1)" != "x" ] && [ "x$(2)" != "x" ]; then \
echo "int i;" > ./conftest.c ; \
$(CC) -c -o conftest.o conftest.c > /dev/null 2>&1 ; \
$(1) $(2) conftest.o > /dev/null 2>&1 && \
echo "$(1) $(2)" || echo "$(3)"; \
rm -f conftest.c conftest.o > /dev/null 2>&1 ; \
fi)
# Select the compiler needed to build binaries for your development system
HOSTCC = gcc
HOSTCFLAGS:=$(call check_cc,$(HOSTCC),-Wall,)
HOSTCFLAGS+=$(call check_cc,$(HOSTCC),-Wstrict-prototypes,)
HOSTCFLAGS+=$(call check_cc,$(HOSTCC),-O2,)
HOSTCFLAGS+=$(call check_cc,$(HOSTCC),-fomit-frame-pointer,)
LD_WHOLE_ARCHIVE:=$(shell echo "int i;" > conftest.c ; \
$(CC) -c -o conftest.o conftest.c ; \
echo "int main(void){return 0;}" > conftest_main.c ; \
$(CC) -c -o conftest_main.o conftest_main.c ; \
$(AR) $(ARFLAGS) conftest.a conftest.o ; \
$(CC) -Wl,--whole-archive conftest.a -Wl,--no-whole-archive \
conftest_main.o -o conftest > /dev/null 2>&1 \
&& echo "-Wl,--whole-archive" ; \
rm conftest_main.o conftest_main.c conftest.o conftest.c \
conftest.a conftest > /dev/null 2>&1 ; )
ifneq ($(findstring whole-archive,$(LD_WHOLE_ARCHIVE)),)
LD_NO_WHOLE_ARCHIVE:= -Wl,--no-whole-archive
endif
LD_START_GROUP:=$(shell echo "int bar(void){return 0;}" > conftest.c ; \
$(CC) -c -o conftest.o conftest.c ; \
echo "int main(void){return bar();}" > conftest_main.c ; \
$(CC) -c -o conftest_main.o conftest_main.c ; \
$(AR) $(ARFLAGS) conftest.a conftest.o ; \
$(CC) -Wl,--start-group conftest.a conftest_main.o -Wl,--end-group \
-o conftest > /dev/null 2>&1 && echo "-Wl,--start-group" ; \
echo rm conftest_main.o conftest_main.c conftest.o conftest.c \
conftest.a conftest > /dev/null 2>&1 ; )
ifneq ($(findstring start-group,$(LD_START_GROUP)),)
LD_END_GROUP:= -Wl,--end-group
endif
CHECKED_LDFLAGS := $(call check_ld,$(LD),--warn-common,)
# Pin CHECKED_CFLAGS with := so it's only evaluated once. # Pin CHECKED_CFLAGS with := so it's only evaluated once.
CHECKED_CFLAGS:=$(call check_gcc,-funsigned-char,) CHECKED_CFLAGS:=$(call check_cc,$(CC),-Wall,)
CHECKED_CFLAGS+=$(call check_gcc,-mmax-stack-frame=256,) CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wstrict-prototypes,)
CHECKED_CFLAGS+=$(call check_gcc,-fno-builtin-strlen) CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wshadow,)
CHECKED_CFLAGS+=$(call check_cc,$(CC),-funsigned-char,)
CHECKED_CFLAGS+=$(call check_cc,$(CC),-mmax-stack-frame=256,)
CHECKED_CFLAGS+=$(call check_cc,$(CC),-fno-builtin-strlen)
# Preemptively pin this too. # Preemptively pin this too.
PROG_CFLAGS:= PROG_CFLAGS:=
@ -139,26 +195,26 @@ PROG_CFLAGS:=
# for OPTIMIZATION... # for OPTIMIZATION...
# use '-Os' optimization if available, else use -O2 # use '-Os' optimization if available, else use -O2
OPTIMIZATION:=$(call check_gcc,-Os,-O2) OPTIMIZATION:=$(call check_cc,$(CC),-Os,-O2)
ifeq ($(CONFIG_BUILD_AT_ONCE),y) ifeq ($(CONFIG_BUILD_AT_ONCE),y)
# gcc 2.95 exits with 0 for "unrecognized option" # gcc 2.95 exits with 0 for "unrecognized option"
ifeq ($(strip $(shell [ $(CC_MAJOR) -ge 3 ] ; echo $$?)),0) ifeq ($(strip $(shell [ $(CC_MAJOR) -ge 3 ] ; echo $$?)),0)
CFLAGS_COMBINE:=$(call check_gcc,--combine,) CFLAGS_COMBINE:=$(call check_cc,$(CC),--combine,)
endif endif
OPTIMIZATION+=$(call check_gcc,-funit-at-a-time,) OPTIMIZATION+=$(call check_cc,$(CC),-funit-at-a-time,)
OPTIMIZATION+=$(call check_gcc,-fgcse-after-reload,) OPTIMIZATION+=$(call check_cc,$(CC),-fgcse-after-reload,)
ifneq ($(CONFIG_BUILD_LIBBUSYBOX),y) ifneq ($(CONFIG_BUILD_LIBBUSYBOX),y)
# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25795 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25795
# This prevents us from using -fwhole-program when we build the lib # This prevents us from using -fwhole-program when we build the lib
PROG_CFLAGS+=$(call check_gcc,-fwhole-program,) PROG_CFLAGS+=$(call check_cc,$(CC),-fwhole-program,)
endif # CONFIG_BUILD_LIBBUSYBOX endif # CONFIG_BUILD_LIBBUSYBOX
endif # CONFIG_BUILD_AT_ONCE endif # CONFIG_BUILD_AT_ONCE
LIB_LDFLAGS:=$(call check_ld,--enable-new-dtags,) LIB_LDFLAGS:=$(call check_ld,$(LD),--enable-new-dtags,)
#LIB_LDFLAGS+=$(call check_ld,--reduce-memory-overheads,) #LIB_LDFLAGS+=$(call check_ld,$(LD),--reduce-memory-overheads,)
#LIB_LDFLAGS+=$(call check_ld,--as-needed,) #LIB_LDFLAGS+=$(call check_ld,$(LD),--as-needed,)
#LIB_LDFLAGS+=$(call check_ld,--warn-shared-textrel,) #LIB_LDFLAGS+=$(call check_ld,$(LD),--warn-shared-textrel,)
# Some nice architecture specific optimizations # Some nice architecture specific optimizations
@ -166,25 +222,25 @@ ifeq ($(strip $(TARGET_ARCH)),arm)
OPTIMIZATION+=-fstrict-aliasing OPTIMIZATION+=-fstrict-aliasing
endif endif
ifeq ($(strip $(TARGET_ARCH)),i386) ifeq ($(strip $(TARGET_ARCH)),i386)
OPTIMIZATION+=$(call check_gcc,-march=i386,) OPTIMIZATION+=$(call check_cc,$(CC),-march=i386,)
# gcc-4.0 and older seem to benefit from these # gcc-4.0 and older seem to benefit from these
#ifneq ($(strip $(shell [ $(CC_MAJOR) -ge 4 -a $(CC_MINOR) -ge 1 ] ; echo $$?)),0) #ifneq ($(strip $(shell [ $(CC_MAJOR) -ge 4 -a $(CC_MINOR) -ge 1 ] ; echo $$?)),0)
OPTIMIZATION+=$(call check_gcc,-mpreferred-stack-boundary=2,) OPTIMIZATION+=$(call check_cc,$(CC),-mpreferred-stack-boundary=2,)
OPTIMIZATION+=$(call check_gcc,-falign-functions=1 -falign-jumps=1 -falign-loops=1,\ OPTIMIZATION+=$(call check_cc,$(CC),-falign-functions=1 -falign-jumps=1 -falign-loops=1,\
-malign-functions=0 -malign-jumps=0 -malign-loops=0) -malign-functions=0 -malign-jumps=0 -malign-loops=0)
#endif # gcc-4.0 and older #endif # gcc-4.0 and older
# gcc-4.1 and beyond seem to benefit from these # gcc-4.1 and beyond seem to benefit from these
ifeq ($(strip $(shell [ $(CC_MAJOR) -ge 4 -a $(CC_MINOR) -ge 1 ] ; echo $$?)),0) ifeq ($(strip $(shell [ $(CC_MAJOR) -ge 4 -a $(CC_MINOR) -ge 1 ] ; echo $$?)),0)
# turn off flags which hurt -Os # turn off flags which hurt -Os
OPTIMIZATION+=$(call check_gcc,-fno-tree-loop-optimize,) OPTIMIZATION+=$(call check_cc,$(CC),-fno-tree-loop-optimize,)
OPTIMIZATION+=$(call check_gcc,-fno-tree-dominator-opts,) OPTIMIZATION+=$(call check_cc,$(CC),-fno-tree-dominator-opts,)
OPTIMIZATION+=$(call check_gcc,-fno-strength-reduce,) OPTIMIZATION+=$(call check_cc,$(CC),-fno-strength-reduce,)
OPTIMIZATION+=$(call check_gcc,-fno-branch-count-reg,) OPTIMIZATION+=$(call check_cc,$(CC),-fno-branch-count-reg,)
endif # gcc-4.1 and beyond endif # gcc-4.1 and beyond
endif endif
OPTIMIZATION+=$(call check_gcc,-fomit-frame-pointer,) OPTIMIZATION+=$(call check_cc,$(CC),-fomit-frame-pointer,)
# #
#-------------------------------------------------------- #--------------------------------------------------------
@ -215,7 +271,7 @@ ifeq ($(strip $(CONFIG_DEBUG)),y)
CFLAGS +=-g CFLAGS +=-g
else else
CFLAGS +=-DNDEBUG CFLAGS +=-DNDEBUG
LDFLAGS += $(call check_ld,--sort-common,) CHECKED_LDFLAGS += $(call check_ld,$(LD),--sort-common,)
endif endif
ifneq ($(strip $(CONFIG_DEBUG_PESSIMIZE)),y) ifneq ($(strip $(CONFIG_DEBUG_PESSIMIZE)),y)
@ -224,27 +280,26 @@ endif
# warn a bit more verbosely for non-release versions # warn a bit more verbosely for non-release versions
ifneq ($(EXTRAVERSION),) ifneq ($(EXTRAVERSION),)
CHECKED_CFLAGS+=$(call check_gcc,-Wstrict-prototypes,) CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wstrict-prototypes,)
CHECKED_CFLAGS+=$(call check_gcc,-Wmissing-prototypes,) CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wmissing-prototypes,)
CHECKED_CFLAGS+=$(call check_gcc,-Wmissing-declarations,) CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wmissing-declarations,)
CHECKED_CFLAGS+=$(call check_gcc,-Wunused,) CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wunused,)
CHECKED_CFLAGS+=$(call check_gcc,-Winit-self,) CHECKED_CFLAGS+=$(call check_cc,$(CC),-Winit-self,)
CHECKED_CFLAGS+=$(call check_gcc,-Wshadow,) CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wshadow,)
CHECKED_CFLAGS+=$(call check_gcc,-Wcast-align,) CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wcast-align,)
endif endif
STRIPCMD:=$(STRIP) -s --remove-section=.note --remove-section=.comment STRIPCMD:=$(call check_strip,$(STRIP),-s --remove-section=.note --remove-section=.comment,$(STRIP))
ifeq ($(strip $(CONFIG_STATIC)),y) ifeq ($(strip $(CONFIG_STATIC)),y)
PROG_CFLAGS += $(call check_gcc,-static,) PROG_CFLAGS += $(call check_cc,$(CC),-static,)
endif endif
CFLAGS_SHARED := $(call check_gcc,-shared,) CFLAGS_SHARED := $(call check_cc,$(CC),-shared,)
LIB_CFLAGS+=$(CFLAGS_SHARED) LIB_CFLAGS+=$(CFLAGS_SHARED)
ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y) ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y)
CFLAGS_PIC:= $(call check_gcc,-fPIC,) CFLAGS_PIC:= $(call check_cc,$(CC),-fPIC,)
LIB_CFLAGS+=$(CFLAGS_PIC) LIB_CFLAGS+=$(CFLAGS_PIC)
endif endif
ifeq ($(strip $(CONFIG_SELINUX)),y) ifeq ($(strip $(CONFIG_SELINUX)),y)
LIBRARIES += -lselinux LIBRARIES += -lselinux
endif endif
@ -253,6 +308,10 @@ ifeq ($(strip $(PREFIX)),)
PREFIX:=`pwd`/_install PREFIX:=`pwd`/_install
endif endif
#ifneq ($(strip $(CONFIG_GETOPT_LONG)),y)
# CFLAGS += -D__need_getopt
#endif
# Additional complications due to support for pristine source dir. # Additional complications due to support for pristine source dir.
# Include files in the build directory should take precedence over # Include files in the build directory should take precedence over
# the copy in top_srcdir, both during the compilation phase and the # the copy in top_srcdir, both during the compilation phase and the
@ -261,7 +320,9 @@ endif
OBJECTS:=$(APPLET_SOURCES:.c=.o) busybox.o usage.o applets.o OBJECTS:=$(APPLET_SOURCES:.c=.o) busybox.o usage.o applets.o
CFLAGS += $(CHECKED_CFLAGS) $(CROSS_CFLAGS) CFLAGS += $(CHECKED_CFLAGS) $(CROSS_CFLAGS)
LDFLAGS += $(CHECKED_LDFLAGS)
ifdef BB_INIT_SCRIPT ifdef BB_INIT_SCRIPT
CFLAGS += -DINIT_SCRIPT='"$(BB_INIT_SCRIPT)"' CFLAGS += -DINIT_SCRIPT='"$(BB_INIT_SCRIPT)"'
endif endif