Update the build system for pristine source directory builds. This
update is primarily work done by Larry Doolittle, but I did some touchups of my own to make it work for me, -Erik
This commit is contained in:
Eric Andersen
127
Makefile
127
Makefile
@@ -72,7 +72,7 @@ DOLFS = false
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# If you have a "pristine" source directory, point BB_SRC_DIR to it.
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# Experimental and incomplete; tell the mailing list
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# <busybox@opensource.lineo.com> if you do or don't like it so far.
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BB_SRC_DIR = .
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BB_SRC_DIR =
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# If you are running a cross compiler, you may want to set this
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# to something more interesting, like "powerpc-linux-".
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@@ -94,14 +94,21 @@ STRIPTOOL = $(CROSS)strip
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#CROSS_CFLAGS+=-nostdinc -I$(LIBCDIR)/include -I$(GCCINCDIR)
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#GCCINCDIR = $(shell gcc -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp")
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#--------------------------------------------------------
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# use '-Os' optimization if available, else use -O2
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OPTIMIZATION = $(shell if $(CC) -Os -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \
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OPTIMIZATION := $(shell if $(CC) -Os -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \
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then echo "-Os"; else echo "-O2" ; fi)
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WARNINGS = -Wall
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#
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#--------------------------------------------------------
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# If you're going to do a lot of builds with a non-vanilla configuration,
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# it makes sense to adjust parameters above, so you can type "make"
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# by itself, instead of following it by the same half-dozen overrides
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# every time. The stuff below, on the other hand, is probably less
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# prone to casual user adjustment.
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#
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ifeq ($(strip $(DOLFS)),true)
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# For large file summit support
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CFLAGS+=-D_FILE_OFFSET_BITS=64
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@@ -142,22 +149,48 @@ ifndef $(PREFIX)
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endif
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# Additional complications due to support for pristine source dir.
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# Config.h in the build directory should take precedence over the
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# copy in BB_SRC_DIR, both during the compilation phase and the
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# Include files in the build directory should take precedence over
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# the copy in BB_SRC_DIR, both during the compilation phase and the
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# shell script that finds the list of object files.
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#
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# Work in progress by <ldoolitt@recycle.lbl.gov>.
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# If it gets in your way, set DISABLE_VPATH=yes
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ifeq ($(strip $(DISABLE_VPATH)),yes)
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CONFIG_H = Config.h
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else
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VPATH = .:$(BB_SRC_DIR)
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CONFIG_LIST = $(addsuffix /Config.h,$(subst :, ,$(VPATH)))
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CONFIG_H = $(word 1,$(shell ls -f -1 $(CONFIG_LIST) 2>/dev/null))
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CFLAGS += -I- $(patsubst %,-I%,$(subst :, ,$(VPATH)))
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#
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ifneq ($(strip $(BB_SRC_DIR)),)
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VPATH = $(BB_SRC_DIR)
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endif
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#ifneq ($(strip $(VPATH)),)
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# CFLAGS += -I- -I. $(patsubst %,-I%,$(subst :, ,$(VPATH)))
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#endif
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OBJECTS = $(shell $(BB_SRC_DIR)/busybox.sh $(CONFIG_H) $(BB_SRC_DIR)) busybox.o messages.o usage.o utility.o
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# We need to set APPLET_SOURCES to something like
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# $(shell busybox.sh Config.h)
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# but in a manner that works with VPATH and BB_SRC_DIR.
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# Possible ways to approach this:
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#
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# 1. Explicitly search through .:$(VPATH) for busybox.sh and config.h,
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# then $(shell $(BUSYBOX_SH) $(CONFIG_H) $(BB_SRC_DIR))
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#
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# 2. Explicity search through .:$(VPATH) for slist.mk,
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# then $(shell $(MAKE) -f $(SLIST_MK) VPATH=$(VPATH) BB_SRC_DIR=$(BB_SRC_DIR))
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#
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# 3. Create slist.mk in this directory, with commands embedded in
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# a $(shell ...) command, and $(MAKE) it immediately.
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#
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# 4. Use a real rule within this makefile to create a file that sets
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# APPLET_SOURCE_LIST, then include that file. Has complications
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# with the first trip through the makefile (before processing the
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# include) trying to do too much, and a spurious warning the first
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# time make is run.
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#
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# This is option 3:
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#
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#APPLET_SOURCES = $(shell \
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# echo -e 'all: busybox.sh Config.h\n\t@ $$(SHELL) $$^ $$(BB_SRC_DIR)' >slist.mk; \
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# make -f slist.mk VPATH=$(VPATH) BB_SRC_DIR=$(BB_SRC_DIR) \
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#)
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# And option 4:
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-include applet_source_list
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OBJECTS = $(APPLET_SOURCES:.c=.o) busybox.o messages.o usage.o utility.o
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CFLAGS += $(CROSS_CFLAGS)
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CFLAGS += -DBB_VER='"$(VERSION)"'
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CFLAGS += -DBB_BT='"$(BUILDTIME)"'
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@@ -166,20 +199,29 @@ ifdef BB_INIT_SCRIPT
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endif
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ifneq ($(strip $(USE_SYSTEM_PWD_GRP)),true)
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PWD_LIB = pwd_grp/libpwd.a
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LIBRARIES += $(PWD_LIB)
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PWD_GRP = pwd_grp
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PWD_GRP_DIR = $(BB_SRC_DIR)$(PWD_GRP)
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PWD_LIB = libpwd.a
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LIBRARIES += $(PWD_LIB)
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PWD_CSRC=__getpwent.c pwent.c getpwnam.c getpwuid.c putpwent.c getpw.c \
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fgetpwent.c __getgrent.c grent.c getgrnam.c getgrgid.c fgetgrent.c \
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initgroups.c setgroups.c
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PWD_OBJS=$(patsubst %.c,$(PWD_GRP)/%.o, $(PWD_CSRC))
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PWD_CFLAGS = -I$(PWD_GRP_DIR)
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else
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CFLAGS += -DUSE_SYSTEM_PWD_GRP
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endif
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# Put user-supplied flags at the end, where they
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# have a chance of winning.
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CFLAGS += $(CFLAGS_EXTRA)
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.EXPORT_ALL_VARIABLES:
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all: busybox busybox.links doc
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all: applet_source_list busybox busybox.links doc
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applet_source_list: busybox.sh Config.h
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(echo -n "APPLET_SOURCES := "; $(SHELL) $^ $(BB_SRC_DIR)) > $@
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doc: olddoc
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@@ -191,12 +233,12 @@ docs/BusyBox.txt: docs/busybox.pod
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@echo BusyBox Documentation
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@echo
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-mkdir -p docs
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-pod2text $(BB_SRC_DIR)/docs/busybox.pod > docs/BusyBox.txt
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-pod2text $< > $@
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docs/BusyBox.1: docs/busybox.pod
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- mkdir -p docs
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- pod2man --center=BusyBox --release="version $(VERSION)" \
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$(BB_SRC_DIR)/docs/busybox.pod > docs/BusyBox.1
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$< > $@
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docs/BusyBox.html: docs/busybox.lineo.com/BusyBox.html
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-@ rm -f docs/BusyBox.html
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@@ -204,7 +246,7 @@ docs/BusyBox.html: docs/busybox.lineo.com/BusyBox.html
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docs/busybox.lineo.com/BusyBox.html: docs/busybox.pod
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-@ mkdir -p docs/busybox.lineo.com
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- pod2html --noindex $(BB_SRC_DIR)/docs/busybox.pod > \
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- pod2html --noindex $< > \
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docs/busybox.lineo.com/BusyBox.html
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-@ rm -f pod2html*
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@@ -236,55 +278,62 @@ docs/busybox/busyboxdocumentation.html: docs/busybox.sgml
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(cd docs/busybox.lineo.com; sgmltools -b html ../busybox.sgml)
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busybox: $(PWD_LIB) $(OBJECTS)
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$(CC) $(LDFLAGS) -o $@ $^ $(LIBRARIES)
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$(STRIP)
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$(PWD_LIB):
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$(MAKE) -eC pwd_grp
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busybox.links: Config.h applets.h
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- $(BB_SRC_DIR)/busybox.mkll $(CONFIG_H) $(BB_SRC_DIR)/applets.h >$@
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# Without VPATH, rule expands to "/bin/sh busybox.mkll Config.h applets.h"
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# but with VPATH, some or all of those file names are resolved to the
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# directories in which they live.
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busybox.links: busybox.mkll Config.h applets.h
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- $(SHELL) $^ >$@
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nfsmount.o cmdedit.o: %.o: %.h
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$(OBJECTS): %.o: %.c Config.h busybox.h applets.h Makefile
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$(CC) $(CFLAGS) -I- -I. $(patsubst %,-I%,$(subst :, ,$(BB_SRC_DIR))) -c $< -o $*.o
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$(PWD_OBJS): %.o: %.c pwd_lib_objdir Config.h busybox.h applets.h Makefile
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$(CC) $(CFLAGS) $(PWD_CFLAGS) -c $< -o $*.o
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$(PWD_LIB): $(PWD_OBJS)
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$(AR) $(ARFLAGS) $(PWD_LIB) $^
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pwd_lib_objdir:
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mkdir -p $(PWD_GRP)
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usage.o: usage.h
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utility.o: loop.h
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loop.h: mk_loop_h.sh
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@ sh $<
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@ $(SHELL) $< > $@
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test tests:
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cd tests && $(MAKE) all
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clean:
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- cd tests && $(MAKE) clean
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- cd pwd_grp && $(MAKE) clean
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- rm -f docs/BusyBox.txt docs/BusyBox.1 docs/BusyBox.html \
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docs/busybox.lineo.com/BusyBox.html
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- rm -f docs/busybox.txt docs/busybox.dvi docs/busybox.ps \
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docs/busybox.pdf docs/busybox.lineo.com/busybox.html
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- rm -f multibuild.log Config.h.orig
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- rm -rf docs/busybox _install
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- rm -f busybox.links loop.h *~ *.o core
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- rm -rf docs/busybox _install $(PWD_LIB)
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- rm -f busybox.links loop.h *~ slist.mk core applet_source_list
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- find -name *.o | xargs rm -f;
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distclean: clean
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- rm -f busybox
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- cd tests && $(MAKE) distclean
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install: busybox busybox.links
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$(BB_SRC_DIR)/install.sh $(PREFIX)
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install: install.sh busybox busybox.links
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$(SHELL) $< $(PREFIX)
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install-hardlinks: busybox busybox.links
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$(BB_SRC_DIR)/install.sh $(PREFIX) --hardlinks
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install-hardlinks: install.sh busybox busybox.links
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$(SHELL) $< $(PREFIX) --hardlinks
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debug_pristine:
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@ echo VPATH=\"$(VPATH)\"
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@ echo CONFIG_LIST=\"$(CONFIG_LIST)\"
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@ echo CONFIG_H=\"$(CONFIG_H)\"
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@ echo OBJECTS=\"$(OBJECTS)\"
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dist release: distclean doc
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