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
parent
69c8572f29
commit
19f86207f5
22
Config.h
22
Config.h
@ -142,25 +142,18 @@
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//
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// Turn this on to use Erik's very cool devps, and devmtab kernel drivers,
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// thereby eliminating the need for the /proc filesystem and thereby saving
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// lots and lots memory for more important things. You can not use this and
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// USE_PROCFS at the same time... NOTE: If you enable this feature, you
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// _must_ have patched the kernel to include the devps patch that is included
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// in the busybox/kernel-patches directory. You will also need to create some
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// device special files in /dev on your embedded system:
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// lots and lots memory for more important things. NOTE: If you enable this
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// feature, you _must_ have patched the kernel to include the devps patch that
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// is included in the busybox/kernel-patches directory. You will also need to
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// create some device special files in /dev on your embedded system:
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// mknod /dev/mtab c 10 22
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// mknod /dev/ps c 10 21
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// I emailed Linus and this patch will not be going into the stock kernel.
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//#define BB_FEATURE_USE_DEVPS_PATCH
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//
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// enable features that use the /proc filesystem (apps that
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// break without this will tell you on compile)...
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// You can't use this and BB_FEATURE_USE_DEVPS_PATCH
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// at the same time...
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#define BB_FEATURE_USE_PROCFS
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//
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// This compiles out everything but the most
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// trivial --help usage information (i.e. reduces binary size)
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//#define BB_FEATURE_TRIVIAL_HELP
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#define BB_FEATURE_TRIVIAL_HELP
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//
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// Use termios to manipulate the screen ('more' is prettier with this on)
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#define BB_FEATURE_USE_TERMIOS
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@ -198,11 +191,6 @@
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//Have init enable core dumping for child processes (for debugging only)
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//#define BB_FEATURE_INIT_COREDUMPS
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//
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// Allow init to permenently chroot, and umount the old root fs
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// just like an initrd does. Requires a kernel patch by Werner Almesberger.
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// ftp://icaftp.epfl.ch/pub/people/almesber/misc/umount-root-*.tar.gz
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//#define BB_FEATURE_INIT_CHROOT
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//
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//Make sure nothing is printed to the console on boot
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//#define BB_FEATURE_EXTRA_QUIET
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//
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125
Makefile
125
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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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=\"$(OBJECTS)\"
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dist release: distclean doc
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@ -7,7 +7,7 @@ RAW=` \
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`
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test "${RAW}" != "" || exit
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cd ${2:-.}
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# I added in the extra "ls" so only source files that
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# actually exist will show up in the compile list.
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ls -1 $RAW 2>/dev/null | sed -e 's/\.c$/\.o/g'
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# By running $RAW through "ls", we avoid listing
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# source files that don't exist.
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ls $RAW 2>/dev/null | tr '\n' ' '
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@ -1,2 +1,2 @@
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#define USAGE_MESSAGES
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#include <usage.h>
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#include "usage.h"
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@ -7,7 +7,7 @@ RAW=` \
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`
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test "${RAW}" != "" || exit
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cd ${2:-.}
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# I added in the extra "ls" so only source files that
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# actually exist will show up in the compile list.
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ls -1 $RAW 2>/dev/null | sed -e 's/\.c$/\.o/g'
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# By running $RAW through "ls", we avoid listing
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# source files that don't exist.
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ls $RAW 2>/dev/null | tr '\n' ' '
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@ -2,8 +2,7 @@
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#
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# Figure out (i) the type of dev_t (ii) the defines for loop stuff
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#
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rm -f loop.h
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# Output of this script is normally redirected to "loop.h".
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# Since 1.3.79 there is an include file <asm/posix_types.h>
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# that defines __kernel_dev_t.
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@ -12,23 +11,27 @@ rm -f loop.h
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# avoids namespace pollution. Otherwise we guess that __kernel_dev_t
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# is an unsigned short (which is true on i386, but false on alpha).
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# BUG: This test is actually broken if your gcc is not configured to
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# search /usr/include, as may well happen with cross-compilers.
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# It would be better to ask $(CC) if these files can be found.
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if [ -f /usr/include/linux/posix_types.h ]; then
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echo '#include <linux/posix_types.h>' >> loop.h
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echo '#undef dev_t' >> loop.h
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echo '#define dev_t __kernel_dev_t' >> loop.h
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echo '#include <linux/posix_types.h>'
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echo '#undef dev_t'
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echo '#define dev_t __kernel_dev_t'
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else
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echo '#undef dev_t' >> loop.h
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echo '#define dev_t unsigned short' >> loop.h
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echo '#undef dev_t'
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echo '#define dev_t unsigned short'
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fi
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# Next we have to find the loop stuff itself.
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# First try kernel source, then a private version.
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if [ -f /usr/include/linux/loop.h ]; then
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echo '#include <linux/loop.h>' >> loop.h
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echo '#include <linux/loop.h>'
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else
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echo '#include "real_loop.h"' >> loop.h
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echo '#include "real_loop.h"'
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fi
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echo '#undef dev_t' >> loop.h
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echo '#undef dev_t'
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23
mk_loop_h.sh
23
mk_loop_h.sh
@ -2,8 +2,7 @@
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#
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# Figure out (i) the type of dev_t (ii) the defines for loop stuff
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#
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rm -f loop.h
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# Output of this script is normally redirected to "loop.h".
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# Since 1.3.79 there is an include file <asm/posix_types.h>
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# that defines __kernel_dev_t.
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@ -12,23 +11,27 @@ rm -f loop.h
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# avoids namespace pollution. Otherwise we guess that __kernel_dev_t
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# is an unsigned short (which is true on i386, but false on alpha).
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||||
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# BUG: This test is actually broken if your gcc is not configured to
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# search /usr/include, as may well happen with cross-compilers.
|
||||
# It would be better to ask $(CC) if these files can be found.
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if [ -f /usr/include/linux/posix_types.h ]; then
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echo '#include <linux/posix_types.h>' >> loop.h
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echo '#undef dev_t' >> loop.h
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echo '#define dev_t __kernel_dev_t' >> loop.h
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echo '#include <linux/posix_types.h>'
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echo '#undef dev_t'
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echo '#define dev_t __kernel_dev_t'
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else
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echo '#undef dev_t' >> loop.h
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echo '#define dev_t unsigned short' >> loop.h
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echo '#undef dev_t'
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echo '#define dev_t unsigned short'
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fi
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# Next we have to find the loop stuff itself.
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# First try kernel source, then a private version.
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if [ -f /usr/include/linux/loop.h ]; then
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echo '#include <linux/loop.h>' >> loop.h
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echo '#include <linux/loop.h>'
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else
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echo '#include "real_loop.h"' >> loop.h
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echo '#include "real_loop.h"'
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fi
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echo '#undef dev_t' >> loop.h
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echo '#undef dev_t'
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39
pristine_setup.sh
Executable file
39
pristine_setup.sh
Executable file
@ -0,0 +1,39 @@
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#!/bin/sh
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#
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||||
# To compile BusyBox without touching the original sources
|
||||
# (as might be interesting for multi-target builds), create
|
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# an empty directory, cd into it, and run this program by
|
||||
# giving its explicit path (kind of like how you would run
|
||||
# configure, if BusyBox had one). Then you should be ready
|
||||
# to "make". Files in the build tree, in particular Config.h,
|
||||
# will override those in the pristine source tree.
|
||||
#
|
||||
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||||
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# if you use a ? in your path name, you lose.
|
||||
DIR=`basedir ${0%%/pristine_setup}`
|
||||
if [ ! -d $DIR ]; then
|
||||
echo "unexpected problem: $DIR is not a directory. Aborting pristine setup"
|
||||
exit
|
||||
fi
|
||||
|
||||
echo " "
|
||||
|
||||
if [ -e ./Config.h ]; then
|
||||
echo "./Config.h already exists: not overwriting"
|
||||
else
|
||||
cp $DIR/Config.h Config.h
|
||||
fi
|
||||
|
||||
if [ -e ./Makefile ]; then
|
||||
echo "./Makefile already exists: not overwriting"
|
||||
else
|
||||
sed -e "s?BB_SRC_DIR =?BB_SRC_DIR = $DIR?" <$DIR/Makefile >Makefile || exit
|
||||
fi
|
||||
|
||||
|
||||
echo " "
|
||||
echo "You may now type 'make' to build busybox in this directory"
|
||||
echo "($PWD) using the pristine sources in $DIR"
|
||||
echo " "
|
||||
|
||||
Loading…
Reference in New Issue
Block a user