diff options
| -rw-r--r-- | Config.h | 22 | ||||
| -rw-r--r-- | Makefile | 129 | ||||
| -rwxr-xr-x | applets/busybox.sh | 6 | ||||
| -rw-r--r-- | applets/usage.c | 2 | ||||
| -rwxr-xr-x | busybox.sh | 6 | ||||
| -rwxr-xr-x | libbb/mk_loop_h.sh | 23 | ||||
| -rwxr-xr-x | mk_loop_h.sh | 23 | ||||
| -rwxr-xr-x | pristine_setup.sh | 39 | ||||
| -rw-r--r-- | usage.c | 2 |
9 files changed, 167 insertions, 85 deletions
@@ -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 // @@ -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 - -OBJECTS = $(shell $(BB_SRC_DIR)/busybox.sh $(CONFIG_H) $(BB_SRC_DIR)) busybox.o messages.o usage.o utility.o +#ifneq ($(strip $(VPATH)),) +# CFLAGS += -I- -I. $(patsubst %,-I%,$(subst :, ,$(VPATH))) +#endif + +# 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=\"$(OBJECTS)\" dist release: distclean doc diff --git a/applets/busybox.sh b/applets/busybox.sh index 547aca4..3382980 100755 --- a/applets/busybox.sh +++ b/applets/busybox.sh @@ -7,7 +7,7 @@ RAW=` \ ` test "${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 $RAW 2>/dev/null | tr '\n' ' ' diff --git a/applets/usage.c b/applets/usage.c index 1515c08..e429c5a 100644 --- a/applets/usage.c +++ b/applets/usage.c @@ -1,2 +1,2 @@ #define USAGE_MESSAGES -#include <usage.h> +#include "usage.h" @@ -7,7 +7,7 @@ RAW=` \ ` test "${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' ' ' diff --git a/libbb/mk_loop_h.sh b/libbb/mk_loop_h.sh index c33c010..71c9873 100755 --- a/libbb/mk_loop_h.sh +++ b/libbb/mk_loop_h.sh @@ -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' diff --git a/mk_loop_h.sh b/mk_loop_h.sh index c33c010..71c9873 100755 --- a/mk_loop_h.sh +++ b/mk_loop_h.sh @@ -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' diff --git a/pristine_setup.sh b/pristine_setup.sh new file mode 100755 index 0000000..dca278c --- /dev/null +++ b/pristine_setup.sh @@ -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 " " + @@ -1,2 +1,2 @@ #define USAGE_MESSAGES -#include <usage.h> +#include "usage.h" |