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 2001-02-17 00:42:47 +00:00
parent 69c8572f29
commit 19f86207f5
9 changed files with 166 additions and 84 deletions

View File

@ -142,25 +142,18 @@
//
// Turn this on to use Erik's very cool devps, and devmtab kernel drivers,
// thereby eliminating the need for the /proc filesystem and thereby saving
// lots and lots memory for more important things. You can not use this and
// USE_PROCFS at the same time... NOTE: If you enable this feature, you
// _must_ have patched the kernel to include the devps patch that is included
// in the busybox/kernel-patches directory. You will also need to create some
// device special files in /dev on your embedded system:
// lots and lots memory for more important things. NOTE: If you enable this
// feature, you _must_ have patched the kernel to include the devps patch that
// is included in the busybox/kernel-patches directory. You will also need to
// create some device special files in /dev on your embedded system:
// mknod /dev/mtab c 10 22
// mknod /dev/ps c 10 21
// I emailed Linus and this patch will not be going into the stock kernel.
//#define BB_FEATURE_USE_DEVPS_PATCH
//
// enable features that use the /proc filesystem (apps that
// break without this will tell you on compile)...
// You can't use this and BB_FEATURE_USE_DEVPS_PATCH
// at the same time...
#define BB_FEATURE_USE_PROCFS
//
// This compiles out everything but the most
// trivial --help usage information (i.e. reduces binary size)
//#define BB_FEATURE_TRIVIAL_HELP
#define BB_FEATURE_TRIVIAL_HELP
//
// Use termios to manipulate the screen ('more' is prettier with this on)
#define BB_FEATURE_USE_TERMIOS
@ -198,11 +191,6 @@
//Have init enable core dumping for child processes (for debugging only)
//#define BB_FEATURE_INIT_COREDUMPS
//
// Allow init to permenently chroot, and umount the old root fs
// just like an initrd does. Requires a kernel patch by Werner Almesberger.
// ftp://icaftp.epfl.ch/pub/people/almesber/misc/umount-root-*.tar.gz
//#define BB_FEATURE_INIT_CHROOT
//
//Make sure nothing is printed to the console on boot
//#define BB_FEATURE_EXTRA_QUIET
//

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

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@ -7,7 +7,7 @@ RAW=` \
`
test "${RAW}" != "" || exit
cd ${2:-.}
# I added in the extra "ls" so only source files that
# actually exist will show up in the compile list.
ls -1 $RAW 2>/dev/null | sed -e 's/\.c$/\.o/g'
# By running $RAW through "ls", we avoid listing
# source files that don't exist.
ls $RAW 2>/dev/null | tr '\n' ' '

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@ -1,2 +1,2 @@
#define USAGE_MESSAGES
#include <usage.h>
#include "usage.h"

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@ -7,7 +7,7 @@ RAW=` \
`
test "${RAW}" != "" || exit
cd ${2:-.}
# I added in the extra "ls" so only source files that
# actually exist will show up in the compile list.
ls -1 $RAW 2>/dev/null | sed -e 's/\.c$/\.o/g'
# By running $RAW through "ls", we avoid listing
# source files that don't exist.
ls $RAW 2>/dev/null | tr '\n' ' '

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@ -2,8 +2,7 @@
#
# Figure out (i) the type of dev_t (ii) the defines for loop stuff
#
rm -f loop.h
# Output of this script is normally redirected to "loop.h".
# Since 1.3.79 there is an include file <asm/posix_types.h>
# that defines __kernel_dev_t.
@ -12,23 +11,27 @@ rm -f loop.h
# avoids namespace pollution. Otherwise we guess that __kernel_dev_t
# is an unsigned short (which is true on i386, but false on alpha).
# BUG: This test is actually broken if your gcc is not configured to
# search /usr/include, as may well happen with cross-compilers.
# It would be better to ask $(CC) if these files can be found.
if [ -f /usr/include/linux/posix_types.h ]; then
echo '#include <linux/posix_types.h>' >> loop.h
echo '#undef dev_t' >> loop.h
echo '#define dev_t __kernel_dev_t' >> loop.h
echo '#include <linux/posix_types.h>'
echo '#undef dev_t'
echo '#define dev_t __kernel_dev_t'
else
echo '#undef dev_t' >> loop.h
echo '#define dev_t unsigned short' >> loop.h
echo '#undef dev_t'
echo '#define dev_t unsigned short'
fi
# Next we have to find the loop stuff itself.
# First try kernel source, then a private version.
if [ -f /usr/include/linux/loop.h ]; then
echo '#include <linux/loop.h>' >> loop.h
echo '#include <linux/loop.h>'
else
echo '#include "real_loop.h"' >> loop.h
echo '#include "real_loop.h"'
fi
echo '#undef dev_t' >> loop.h
echo '#undef dev_t'

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@ -2,8 +2,7 @@
#
# Figure out (i) the type of dev_t (ii) the defines for loop stuff
#
rm -f loop.h
# Output of this script is normally redirected to "loop.h".
# Since 1.3.79 there is an include file <asm/posix_types.h>
# that defines __kernel_dev_t.
@ -12,23 +11,27 @@ rm -f loop.h
# avoids namespace pollution. Otherwise we guess that __kernel_dev_t
# is an unsigned short (which is true on i386, but false on alpha).
# BUG: This test is actually broken if your gcc is not configured to
# search /usr/include, as may well happen with cross-compilers.
# It would be better to ask $(CC) if these files can be found.
if [ -f /usr/include/linux/posix_types.h ]; then
echo '#include <linux/posix_types.h>' >> loop.h
echo '#undef dev_t' >> loop.h
echo '#define dev_t __kernel_dev_t' >> loop.h
echo '#include <linux/posix_types.h>'
echo '#undef dev_t'
echo '#define dev_t __kernel_dev_t'
else
echo '#undef dev_t' >> loop.h
echo '#define dev_t unsigned short' >> loop.h
echo '#undef dev_t'
echo '#define dev_t unsigned short'
fi
# Next we have to find the loop stuff itself.
# First try kernel source, then a private version.
if [ -f /usr/include/linux/loop.h ]; then
echo '#include <linux/loop.h>' >> loop.h
echo '#include <linux/loop.h>'
else
echo '#include "real_loop.h"' >> loop.h
echo '#include "real_loop.h"'
fi
echo '#undef dev_t' >> loop.h
echo '#undef dev_t'

39
pristine_setup.sh Executable file
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@ -0,0 +1,39 @@
#!/bin/sh
#
# To compile BusyBox without touching the original sources
# (as might be interesting for multi-target builds), create
# 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.
#
# 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 " "

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@ -1,2 +1,2 @@
#define USAGE_MESSAGES
#include <usage.h>
#include "usage.h"