build system overhaul

1 files changed, 0 insertions, 436 deletions

diff --git a/Rules.mak b/Rules.mak
deleted file mode 100644
index e0704989b..000000000
--- a/Rules.mak
+++ /dev/null
@@ -1,436 +0,0 @@
-# Rules.make for busybox
-#
-# Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
-#
-# Licensed under GPLv2, see the file LICENSE in this tarball for details.
-#
-
-# Pull in the user's busybox configuration
-ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
--include $(top_builddir)/.config
-endif
-
-#--------------------------------------------------------
-PROG      := busybox
-MAJOR_VERSION   :=1
-MINOR_VERSION   :=2
-SUBLEVEL_VERSION:=0
-EXTRAVERSION    :=-svn
-VERSION   :=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL_VERSION)$(EXTRAVERSION)
-BUILDTIME := $(shell TZ=UTC date -u "+%Y.%m.%d-%H:%M%z")
-
-
-#--------------------------------------------------------
-# With a modern GNU make(1) (highly recommended, that's what all the
-# developers use), all of the following configuration values can be
-# overridden at the command line.  For example:
-#   make CROSS_COMPILE=powerpc-linux- top_srcdir="$HOME/busybox" PREFIX=/mnt/app
-#--------------------------------------------------------
-
-# If you are running a cross compiler, you will want to set CROSS_COMPILE
-# 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
-CC             = $(CROSS_COMPILE)gcc
-AR             = $(CROSS_COMPILE)ar
-AS             = $(CROSS_COMPILE)as
-LD             = $(CROSS_COMPILE)ld
-NM             = $(CROSS_COMPILE)nm
-STRIP          = $(CROSS_COMPILE)strip
-ELF2FLT        = $(CROSS_COMPILE)elf2flt
-CPP            = $(CC) -E
-SED           ?= sed
-BZIP2         ?= bzip2
-
-
-# What OS are you compiling busybox for?  This allows you to include
-# OS specific things, syscall overrides, etc.
-TARGET_OS=linux
-
-# Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc.
-LC_ALL:= C
-
-# This must bind late because srcdir is reset for every source subdirectory.
-INCS:=-I$(top_builddir)/include -I$(top_srcdir)/include
-CFLAGS=$(INCS) -I$(srcdir) -D_GNU_SOURCE
-CFLAGS+=$(CHECKED_CFLAGS)
-ARFLAGS=cru
-
-# 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__ | $(CC) -E -xc - | tail -n 1))
-
-#--------------------------------------------------------
-export VERSION BUILDTIME HOSTCC HOSTCFLAGS CROSS_COMPILE CC AR AS LD NM STRIP CPP
-ifeq ($(strip $(TARGET_ARCH)),)
-TARGET_ARCH:=$(shell $(CC) -dumpmachine | $(SED) -e s'/-.*//' \
-                -e 's/i.86/i386/' \
-                -e 's/sparc.*/sparc/' \
-                -e 's/arm.*/arm/g' \
-                -e 's/m68k.*/m68k/' \
-                -e 's/ppc/powerpc/g' \
-                -e 's/v850.*/v850/g' \
-                -e 's/sh[234]/sh/' \
-                -e 's/mips-.*/mips/' \
-                -e 's/mipsel-.*/mipsel/' \
-                -e 's/cris.*/cris/' \
-                )
-endif
-
-# A nifty macro to make testing gcc features easier, but note that everything
-# that uses this _must_ use := or it will be re-evaluated everytime it is
-# referenced.
-ifeq ($(strip $(BUILD_VERBOSE)),2)
-VERBOSE_CHECK_CC=echo CC=\"$(1)\" check_cc $(2) >&2;
-endif
-check_cc=$(shell \
-        $(VERBOSE_CHECK_CC) \
-        if [ "x$(1)" != "x" ] && [ "x$(2)" != "x" ]; then \
-                echo "int i;" > ./conftest.c; \
-                if $(1) $(2) -c -o conftest.o conftest.c > /dev/null 2>&1; \
-                then echo "$(2)"; else echo "$(3)"; fi ; \
-                rm -f conftest.c conftest.o; \
-        fi)
-
-ifneq ($(filter $(nocheck_targets),$(MAKECMDGOALS)),)
-check_cc:=
-endif
-
-# A not very robust macro to check for available ld flags
-ifeq ($(strip $(BUILD_VERBOSE)),2)
-VERBOSE_CHECK_LD=echo LD=\"$(1)\" check_ld $(2) >&2;
-endif
-check_ld=$(shell \
-        $(VERBOSE_CHECK_LD) \
-        if [ "x$(1)" != "x" ] && [ "x$(2)" != "x" ]; then \
-                $(1) -o /dev/null -b binary /dev/null > /dev/null 2>&1 && \
-                echo "-Wl,$(2)" ; \
-        fi)
-
-ifneq ($(filter $(nocheck_targets),$(MAKECMDGOALS)),)
-check_ld:=
-endif
-
-# A not very robust macro to check for available strip flags
-ifeq ($(strip $(BUILD_VERBOSE)),2)
-VERBOSE_CHECK_STRIP=echo STRIPCMD=\"$(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)
-
-ifneq ($(filter $(nocheck_targets),$(MAKECMDGOALS)),)
-check_strip:=
-endif
-
-
-# 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 ; \
-        $(CC) -Wl,--start-group conftest.a conftest_main.o -Wl,--end-group \
-         -o conftest > /dev/null 2>&1 && echo "-Wl,--start-group" ; \
-        rm conftest_main.o conftest_main.c conftest.o conftest.c \
-         conftest.a conftest > /dev/null 2>&1 ; )
-ifneq ($(findstring start-group,$(LD_START_GROUP)),)
-LD_END_GROUP:= -Wl,--end-group
-endif
-
-CHECKED_LDFLAGS := $(call check_ld,$(LD),--warn-common,)
-#CHECKED_LDFLAGS := $(call check_ld,$(LD),-static-libgcc,)
-
-# Pin CHECKED_CFLAGS with := so it's only evaluated once.
-CHECKED_CFLAGS:=$(call check_cc,$(CC),-Wall,)
-CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wstrict-prototypes,)
-CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wshadow,)
-CHECKED_CFLAGS+=$(call check_cc,$(CC),-funsigned-char,)
-CHECKED_CFLAGS+=$(call check_cc,$(CC),-fno-builtin-strlen,)
-CHECKED_CFLAGS+=$(call check_cc,$(CC),-finline-limit=0,)
-
-# gcc 2.95 exits with 0 for "unrecognized option"
-ifeq ($(strip $(shell [ $(CC_MAJOR) -ge 3 ] ; echo $$?)),0)
-  CHECKED_CFLAGS+=$(call check_cc,$(CC),-static-libgcc,)
-endif
-
-# Preemptively pin this too.
-PROG_CFLAGS:=
-
-
-#--------------------------------------------------------
-# Arch specific compiler optimization stuff should go here.
-# Unless you want to override the defaults, do not set anything
-# for OPTIMIZATION...
-
-# use '-Os' optimization if available, else use -O2
-OPTIMIZATION:=$(call check_cc,$(CC),-Os,-O2)
-
-ifeq ($(CONFIG_BUILD_AT_ONCE),y)
-# gcc 2.95 exits with 0 for "unrecognized option"
-ifeq ($(strip $(shell [ $(CC_MAJOR) -ge 3 ] ; echo $$?)),0)
-        CFLAGS_COMBINE:=$(call check_cc,$(CC),--combine,)
-endif
-OPTIMIZATION+=$(call check_cc,$(CC),-funit-at-a-time,)
-OPTIMIZATION+=$(call check_cc,$(CC),-fgcse-after-reload,)
-ifneq ($(CONFIG_BUILD_LIBBUSYBOX),y)
-# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25795
-# This prevents us from using -fwhole-program when we build the lib
-PROG_CFLAGS+=$(call check_cc,$(CC),-fwhole-program,)
-endif # CONFIG_BUILD_LIBBUSYBOX
-endif # CONFIG_BUILD_AT_ONCE
-
-LIB_LDFLAGS:=$(call check_ld,$(LD),--enable-new-dtags,)
-#LIB_LDFLAGS+=$(call check_ld,$(LD),--reduce-memory-overheads,)
-#LIB_LDFLAGS+=$(call check_ld,$(LD),--as-needed,)
-#LIB_LDFLAGS+=$(call check_ld,$(LD),--warn-shared-textrel,)
-
-
-# Some nice architecture specific optimizations
-ifeq ($(strip $(TARGET_ARCH)),arm)
-        OPTIMIZATION+=-fstrict-aliasing
-endif
-ifeq ($(strip $(TARGET_ARCH)),i386)
-        OPTIMIZATION+=$(call check_cc,$(CC),-march=i386,)
-# gcc-4.0 and older seem to benefit from these
-ifneq ($(strip $(shell [ $(CC_MAJOR) -ge 4 -a $(CC_MINOR) -ge 1 ] ; echo $$?)),0)
-        OPTIMIZATION+=$(call check_cc,$(CC),-mpreferred-stack-boundary=2,)
-        OPTIMIZATION+=$(call check_cc,$(CC),-falign-functions=1 -falign-jumps=1 -falign-loops=1, -malign-functions=0 -malign-jumps=0 -malign-loops=0,)
-
-        # gcc 4.1 produces many broken, totally invalid warnings
-        CHECKED_CFLAGS+=$(call check_cc,$(CC),-Werror,)
-endif # gcc-4.0 and older
-
-# gcc-4.1 and beyond seem to benefit from these
-ifeq ($(strip $(shell [ $(CC_MAJOR) -ge 4 -a $(CC_MINOR) -ge 1 ] ; echo $$?)),0)
-        # turn off flags which hurt -Os
-        OPTIMIZATION+=$(call check_cc,$(CC),-fno-tree-loop-optimize,)
-        OPTIMIZATION+=$(call check_cc,$(CC),-fno-tree-dominator-opts,)
-        OPTIMIZATION+=$(call check_cc,$(CC),-fno-strength-reduce,)
-
-        OPTIMIZATION+=$(call check_cc,$(CC),-fno-branch-count-reg,)
-endif # gcc-4.1 and beyond
-endif
-OPTIMIZATION+=$(call check_cc,$(CC),-fomit-frame-pointer,)
-CHECKED_LDFLAGS += $(call check_ld,$(LD),--sort-common,)
-
-#
-#--------------------------------------------------------
-# If you're going to do a lot of builds with a non-vanilla configuration,
-# it makes sense to adjust parameters above, so you can type "make"
-# by itself, instead of following it by the same half-dozen overrides
-# every time.  The stuff below, on the other hand, is probably less
-# prone to casual user adjustment.
-#
-
-ifeq ($(strip $(CONFIG_LFS)),y)
-    # For large file summit support
-    CFLAGS+=-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
-endif
-ifeq ($(strip $(CONFIG_DMALLOC)),y)
-    # For testing mem leaks with dmalloc
-    CFLAGS+=-DDMALLOC
-    LIBRARIES:=-ldmalloc
-else
-    ifeq ($(strip $(CONFIG_EFENCE)),y)
-        LIBRARIES:=-lefence
-    endif
-endif
-
-# Debugging info
-
-ifeq ($(strip $(CONFIG_DEBUG)),y)
-    CFLAGS +=-g
-else
-    CFLAGS +=-DNDEBUG
-endif
-
-ifneq ($(strip $(CONFIG_DEBUG_PESSIMIZE)),y)
-    CFLAGS += $(OPTIMIZATION)
-endif
-
-# warn a bit more verbosely for non-release versions
-ifneq ($(EXTRAVERSION),)
-    CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wstrict-prototypes,)
-    CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wmissing-prototypes,)
-    CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wmissing-declarations,)
-    CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wunused,)
-    CHECKED_CFLAGS+=$(call check_cc,$(CC),-Winit-self,)
-    CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wshadow,)
-    CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wcast-align,)
-endif
-STRIPCMD:=$(call check_strip,$(STRIP),-s --remove-section=.note --remove-section=.comment,$(STRIP))
-ifeq ($(strip $(CONFIG_STATIC)),y)
-    PROG_CFLAGS += $(call check_cc,$(CC),-static,)
-else
-    ifneq ($(strip $(CONFIG_DEBUG)),y)
-        OPTIMIZATION+=$(call check_cc,$(CC),-ffunction-sections -fdata-sections,)
-        CHECKED_LDFLAGS += $(call check_ld,$(LD),--gc-sections,)
-    endif
-endif
-CFLAGS_SHARED := $(call check_cc,$(CC),-shared,)
-LIB_CFLAGS+=$(CFLAGS_SHARED)
-
-ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y)
-    CFLAGS_PIC:= $(call check_cc,$(CC),-fPIC,)
-    LIB_CFLAGS+=$(CFLAGS_PIC)
-endif
-
-ifeq ($(strip $(CONFIG_SELINUX)),y)
-    LIBRARIES += -lselinux -lsepol
-endif
-
-ifeq ($(strip $(PREFIX)),)
-    PREFIX:=`pwd`/_install
-endif
-
-ifneq ($(strip $(CONFIG_GETOPT_LONG)),y)
-    CFLAGS += -D__need_getopt
-endif
-
-# Additional complications due to support for pristine source dir.
-# Include files in the build directory should take precedence over
-# the copy in top_srcdir, both during the compilation phase and the
-# shell script that finds the list of object files.
-# Work in progress by <ldoolitt@recycle.lbl.gov>.
-
-
-OBJECTS:=$(APPLET_SOURCES:.c=.o) busybox.o usage.o applets.o
-CFLAGS  += $(CHECKED_CFLAGS) $(CROSS_CFLAGS)
-LDFLAGS += $(CHECKED_LDFLAGS)
-
-ifdef BB_INIT_SCRIPT
-    CFLAGS += -DINIT_SCRIPT='"$(BB_INIT_SCRIPT)"'
-endif
-
-# Put user-supplied flags at the end, where they
-# have a chance of winning.
--include $(top_builddir)/.config.mak
-
-#------------------------------------------------------------
-# Installation options
-ifeq ($(strip $(CONFIG_INSTALL_APPLET_HARDLINKS)),y)
-INSTALL_OPTS=--hardlinks
-endif
-ifeq ($(strip $(CONFIG_INSTALL_APPLET_SYMLINKS)),y)
-INSTALL_OPTS=--symlinks
-endif
-ifeq ($(strip $(CONFIG_INSTALL_APPLET_DONT)),y)
-INSTALL_OPTS=
-endif
-
-#------------------------------------------------------------
-# Make the output nice and tight
-MAKEFLAGS += --no-print-directory
-export MAKE_IS_SILENT=n
-ifneq ($(findstring s,$(MAKEFLAGS)),)
-export MAKE_IS_SILENT=y
-SECHO := @-false
-DISP  := sil
-Q     := @
-else
-ifneq ($(BUILD_VERBOSE),)
-SECHO := @-false
-DISP  := ver
-Q     := 
-else
-SECHO := @echo
-DISP  := pur
-Q     := @
-endif
-endif
-
-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_link.h    = echo "  "HOSTLINK $(show_objs) ;
-pur_disp_ar        = echo "  "AR $(ARFLAGS) $(show_objs) ;
-pur_disp_elf2flt   = echo "  "ELF2FLT $(ELF2FLTFLAGS) $(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_elf2flt   = 
-ver_disp_compile.c = 
-ver_disp_compile.h = 
-ver_disp_strip     = 
-ver_disp_link      = 
-ver_disp_link.h    = 
-ver_disp_ar        = 
-ver_disp_elf2flt   = 
-disp_compile.c     = $(Q)$($(DISP)_disp_compile.c)
-disp_compile.h     = $(Q)$($(DISP)_disp_compile.h)
-disp_strip         = $(Q)$($(DISP)_disp_strip)
-disp_link          = $(Q)$($(DISP)_disp_link)
-disp_link.h        = $(Q)$($(DISP)_disp_link.h)
-disp_ar            = $(Q)$($(DISP)_disp_ar)
-disp_elf2flt       = $(Q)$($(DISP)_disp_elf2flt)
-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) $(INCS) -c -o $@ $<
-cmd_strip          = $(STRIPCMD) $@
-cmd_link           = $(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(LDFLAGS) \
-                        $(PROG_CFLAGS) $(PROG_LDFLAGS) $(CFLAGS_COMBINE) \
-                        -o $@ $(LD_START_GROUP)  \
-                        $(APPLETS_DEFINE) $(APPLET_SRC) \
-                        $(BUSYBOX_DEFINE) $(BUSYBOX_SRC) $(libraries-y) \
-                        $(LDBUSYBOX) $(LIBRARIES) \
-                        $(LD_END_GROUP)
-cmd_link.so        = $(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(LDFLAGS) \
-                        $(LIB_CFLAGS) $(CFLAGS_COMBINE) $(LIB_LDFLAGS) \
-                        -o $(@) $(LD_START_GROUP) $(LD_WHOLE_ARCHIVE) \
-                        $(LIBRARY_DEFINE) $(^) \
-                        $(LD_NO_WHOLE_ARCHIVE) $(LD_END_GROUP)
-cmd_link.h         = $(HOSTCC) $(HOSTCFLAGS) $(INCS) $< -o $@
-cmd_ar             = $(AR) $(ARFLAGS) $@ $^
-cmd_elf2flt        = $(ELF2FLT) $(ELF2FLTFLAGS) $< -o $@
-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_link.so         = $(disp_link)      $(cmd_link.so)
-do_link.h          = $(disp_link.h)    $(cmd_link.h)
-do_ar              = $(disp_ar)        $(cmd_ar)
-do_elf2flt         = $(disp_elf2flt)   $(cmd_elf2flt)
-
-uppercase = $(shell echo $1 | $(SED) -e "y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/")
-%.a:
-        @if test -z "$($(call uppercase,$*)_DIR)" ; then \
-                echo "Invalid target $@" ; \
-                exit 1 ; \
-        fi
-        $(Q)$(MAKE) $($(call uppercase,$*)_DIR)$@
-
-.PHONY: dummy