【背景】
折腾：
【已解决】Cygwin下为xscale编译BuildRoot时make出错：/bin/sh: -c: line 0: syntax error near unexpected token `(‘
期间，需要去分析Buildroot的make的逻辑。
对于Buildroot在make menuconfig后，（又去make clean了一下，然后）去make，此时的输出是：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05$ make/usr/bin/make -j4 HOSTCC="/usr/bin/gcc" HOSTCXX="/usr/bin/g++" silentoldconfigmake[1]: Entering directory `/home/CLi/develop/buildroot/buildroot-2013.05'mkdir -p /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/lxdialog/usr/bin/make CC="/usr/bin/gcc" HOSTCC="/usr/bin/gcc" obj=/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config -C support/kconfig -f Makefile.br confmake[2]: Entering directory `/home/CLi/develop/buildroot/buildroot-2013.05/support/kconfig'/usr/bin/gcc -I/usr/include/ncursesw -DCURSES_LOC="<ncursesw/curses.h>" -DNCURSES_WIDECHAR=1 -DLOCALE -DKBUILD_NO_NLS -I/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config -DCONFIG_=\"\" -MM *.c > /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/.depend 2>/dev/null || :make[2]: Leaving directory `/home/CLi/develop/buildroot/buildroot-2013.05/support/kconfig'make[2]: Entering directory `/home/CLi/develop/buildroot/buildroot-2013.05/support/kconfig'/usr/bin/gcc -I/usr/include/ncursesw -DCURSES_LOC="<ncursesw/curses.h>" -DNCURSES_WIDECHAR=1 -DLOCALE -DKBUILD_NO_NLS -I/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config -DCONFIG_=\"\" -c conf.c -o /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/conf.o/usr/bin/gcc -I/usr/include/ncursesw -DCURSES_LOC="<ncursesw/curses.h>" -DNCURSES_WIDECHAR=1 -DLOCALE -DKBUILD_NO_NLS -I/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config -DCONFIG_=\"\" -I. -c /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/zconf.tab.c -o /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/zconf.tab.oIn file included from /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/zconf.tab.c:2500:0:./confdata.c: In function ‘conf_split_config’:./confdata.c:849:6: warning: assignment makes pointer from integer without a cast [enabled by default]/usr/bin/gcc -I/usr/include/ncursesw -DCURSES_LOC="<ncursesw/curses.h>" -DNCURSES_WIDECHAR=1 -DLOCALE -DKBUILD_NO_NLS -I/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config -DCONFIG_=\"\" /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/conf.o /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/zconf.tab.o -o /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/confrm /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/zconf.tab.cmake[2]: Leaving directory `/home/CLi/develop/buildroot/buildroot-2013.05/support/kconfig'BR2_DEFCONFIG='' KCONFIG_AUTOCONFIG=/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/auto.conf KCONFIG_AUTOHEADER=/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/autoconf.h KCONFIG_TRISTATE=/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/tristate.config BUILDROOT_CONFIG=/home/CLi/develop/buildroot/buildroot-2013.05/.config /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/conf --silentoldconfig Config.inmake[1]: Leaving directory `/home/CLi/develop/buildroot/buildroot-2013.05'mkdir -p /home/CLi/develop/buildroot/buildroot-2013.05/output/targetrsync -a \ --exclude .empty --exclude .svn --exclude .git \ --exclude .hg --exclude=CVS --exclude '*~' \ /home/CLi/develop/buildroot/buildroot-2013.05/system/skeleton/ /home/CLi/develop/buildroot/buildroot-2013.05/output/target/cp support/misc/target-dir-warning.txt /home/CLi/develop/buildroot/buildroot-2013.05/output/target/THIS_IS_NOT_YOUR_ROOT_FILESYSTEMtouch /home/CLi/develop/buildroot/buildroot-2013.05/output/build/.root>>> host-ccache 3.1.8 Extractingbzcat /home/CLi/develop/buildroot/buildroot-2013.05/dl/ccache-3.1.8.tar.bz2 | tar --strip-components=1 -C /home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-ccache-3.1.8 -xf ->>> host-ccache 3.1.8 Patching package//ccache>>> host-ccache 3.1.8 Updating config.sub and config.guessfor file in config.guess config.sub; do for i in $(find /home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-ccache-3.1.8 -name $file); do cp support/gnuconfig/$file $i; done; done>>> host-ccache 3.1.8 Patching libtool>>> host-ccache 3.1.8 Configuring(cd /home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-ccache-3.1.8/ && rm -rf config.cache; PATH=/home/CLi/develop/buildroot/buildroot-2013.05/output/host/bin:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin:/home/CLi/develop/crosstool-ng/x-tools/arm-xscale-linux-gnueabi/bin:/opt/crosstool-ng/bin:/home/CLi/develop/crosstool-ng/x-tools/armxscalecurl/bin:/usr/local/bin:/usr/bin:/cygdrive/d/tmp/dev_install_root/Python27_x64:/cygdrive/d/tmp/dev_install_root/Python27_x64/Lib/site-packages/PyQt4:/cygdrive/d/tmp/dev_install_root/Perl64/site/bin:/cygdrive/d/tmp/dev_install_root/Perl64/bin:/cygdrive/c/Program Files/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Program Files (x86)/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Program Files (x86)/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/DTS/Binn:/cygdrive/d/tmp/WordPress/mysql/mysql-5.5.18/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64/ext:/cygdrive/d/tmp/WordPress/DevRoot/Python27:/cygdrive/c/Program Files (x86)/Common Files/Acronis/SnapAPI:/cygdrive/c/Program Files (x86)/Windows Live/Shared:/cygdrive/c/Program Files/Java/jdk1.7.0_11/bin:/home/CLi/develop/docbook/tools/fop/lib:/home/CLi/develop/docbook/tools/fop:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.1.2/TOK/BIN:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.2.0/TOK/BIN:/cygdrive/d/DevRoot/EmbeddedDevelop/trunk/Research/CLI/FF/FBK/develop/tools/develop-tools:/cygdrive/d/tmp/WordPress/DevRoot/Python27/Scripts:/cygdrive/d/tmp/dev_install_root/PostgreSQL/8.3/bin:/cygdrive/d/tmp/dev_install_root/ant/apache-ant-1.8.4/bin:/cygdrive/c/Program Files/nodejs:/cygdrive/c/Program Files/Microsoft/Web Platform Installer:/cygdrive/c/Program Files/TortoiseSVN/bin:/cygdrive/d/DevRoot/IndustrialMobileAutomation/HandheldDataSetter/ANTLR/batchFile:/cygdrive/c/Program Files (x86)/QuickTime/QTSystem:/cygdrive/d/tmp/tmp_dev_root/android/adt-bundle-windows/sdk/platform-tools:/cygdrive/d/tmp/dev_install_root/Tesseract-OCR:/cygdrive/d/tmp/dev_install_root/jython2.5.3/bin:/cygdrive/d/devinstallroot/gnuarm/bin:/cygdrive/d/tmp/dev_install_root/HTML Help Workshop:/cygdrive/c/Users/CLi/AppData/Roaming/npm:/usr/lib/lapack:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include/linux AR="/usr/bin/ar" AS="/usr/bin/as" LD="/usr/bin/ld" NM="/usr/bin/nm" CC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /usr/bin/gcc" GCC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /usr/bin/gcc" CXX="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /usr/bin/g++" CPP="/usr/bin/cpp" CPPFLAGS="-I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CXXFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_LIBDIR="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/pkgconfig:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/share/pkgconfig" PERLLIB="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/perl" LD_LIBRARY_PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib:" CFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" CC="/usr/bin/gcc" ./configure --prefix="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr" --sysconfdir="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/etc" --enable-shared --disable-static --disable-gtk-doc --disable-doc --disable-docs --disable-documentation --with-xmlto=no --with-fop=no ccache_cv_zlib_1_2_3=no )/bin/sh: -c: line 0: syntax error near unexpected token `('/bin/sh: -c: line 0: `(cd /home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-ccache-3.1.8/ && rm -rf config.cache; PATH=/home/CLi/develop/buildroot/buildroot-2013.05/output/host/bin:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin:/home/CLi/develop/crosstool-ng/x-tools/arm-xscale-linux-gnueabi/bin:/opt/crosstool-ng/bin:/home/CLi/develop/crosstool-ng/x-tools/armxscalecurl/bin:/usr/local/bin:/usr/bin:/cygdrive/d/tmp/dev_install_root/Python27_x64:/cygdrive/d/tmp/dev_install_root/Python27_x64/Lib/site-packages/PyQt4:/cygdrive/d/tmp/dev_install_root/Perl64/site/bin:/cygdrive/d/tmp/dev_install_root/Perl64/bin:/cygdrive/c/Program Files/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Program Files (x86)/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Program Files (x86)/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/Tools/Binn:/cygdrive/c/Program Files/Microsoft SQL Server/100/DTS/Binn:/cygdrive/d/tmp/WordPress/mysql/mysql-5.5.18/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/MySQL/MySQL Server 5.5/bin:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64:/cygdrive/d/tmp/WordPress/DevRoot/php-5.3.6-Win32-VC9-x64/ext:/cygdrive/d/tmp/WordPress/DevRoot/Python27:/cygdrive/c/Program Files (x86)/Common Files/Acronis/SnapAPI:/cygdrive/c/Program Files (x86)/Windows Live/Shared:/cygdrive/c/Program Files/Java/jdk1.7.0_11/bin:/home/CLi/develop/docbook/tools/fop/lib:/home/CLi/develop/docbook/tools/fop:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.1.2/TOK/BIN:/cygdrive/d/DevInstallRoot/FF/DD_IDE_1.2.0/TOK/BIN:/cygdrive/d/DevRoot/EmbeddedDevelop/trunk/Research/CLI/FF/FBK/develop/tools/develop-tools:/cygdrive/d/tmp/WordPress/DevRoot/Python27/Scripts:/cygdrive/d/tmp/dev_install_root/PostgreSQL/8.3/bin:/cygdrive/d/tmp/dev_install_root/ant/apache-ant-1.8.4/bin:/cygdrive/c/Program Files/nodejs:/cygdrive/c/Program Files/Microsoft/Web Platform Installer:/cygdrive/c/Program Files/TortoiseSVN/bin:/cygdrive/d/DevRoot/IndustrialMobileAutomation/HandheldDataSetter/ANTLR/batchFile:/cygdrive/c/Program Files (x86)/QuickTime/QTSystem:/cygdrive/d/tmp/tmp_dev_root/android/adt-bundle-windows/sdk/platform-tools:/cygdrive/d/tmp/dev_install_root/Tesseract-OCR:/cygdrive/d/tmp/dev_install_root/jython2.5.3/bin:/cygdrive/d/devinstallroot/gnuarm/bin:/cygdrive/d/tmp/dev_install_root/HTML Help Workshop:/cygdrive/c/Users/CLi/AppData/Roaming/npm:/usr/lib/lapack:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include:/opt/gcc-4.0.4-glibc-2.3.6-kernel-2.6.17/sysroot-arm-xscale-linux-gnu/usr/include/linux AR="/usr/bin/ar" AS="/usr/bin/as" LD="/usr/bin/ld" NM="/usr/bin/nm" CC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /usr/bin/gcc" GCC="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /usr/bin/gcc" CXX="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/ccache /usr/bin/g++" CPP="/usr/bin/cpp" CPPFLAGS="-I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" CXXFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_LIBDIR="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/pkgconfig:/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/share/pkgconfig" PERLLIB="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib/perl" LD_LIBRARY_PATH="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib:" CFLAGS="-O2 -I/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/include" LDFLAGS="-L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/lib -L/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib -Wl,-rpath,/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr/lib" CC="/usr/bin/gcc" ./configure --prefix="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/usr" --sysconfdir="/home/CLi/develop/buildroot/buildroot-2013.05/output/host/etc" --enable-shared --disable-static --disable-gtk-doc --disable-doc --disable-docs --disable-documentation --with-xmlto=no --with-fop=no ccache_cv_zlib_1_2_3=no )'make: *** [/home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-ccache-3.1.8/.stamp_configured] Error 1CLi@PC-CLI-1 ~/develop/buildroot/buildroot-2013.05$ |
然后，对照着makefile，看看能否看出完整的make的逻辑。
【折腾过程】
1.此处的：
| /usr/bin/make -j4 HOSTCC="/usr/bin/gcc" HOSTCXX="/usr/bin/g++" silentoldconfig |
很明显，对应着是：
1 2 | $(BUILD_DIR)/buildroot-config/auto.conf: $(BUILDROOT_CONFIG) $(MAKE) $(EXTRAMAKEARGS) HOSTCC="$(HOSTCC_NOCCACHE)" HOSTCXX="$(HOSTCXX_NOCCACHE)" silentoldconfig |
对应的关系是：
make时，调用的是：
1 | all: world |
->
1 | world: toolchain $(TARGETS_ALL) |
->
1 | toolchain: prepare dirs dependencies $(BASE_TARGETS) |
->
1 | prepare: $(BUILD_DIR)/buildroot-config/auto.conf |
->
1 2 | $(BUILD_DIR)/buildroot-config/auto.conf: $(BUILDROOT_CONFIG) $(MAKE) $(EXTRAMAKEARGS) HOSTCC="$(HOSTCC_NOCCACHE)" HOSTCXX="$(HOSTCXX_NOCCACHE)" silentoldconfig |
2.然后继续看剩下的逻辑。
| mkdir -p /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/lxdialog |
此处，也容易分析出来是：
1 2 3 | $(BUILD_DIR)/buildroot-config/%onf: mkdir -p $(@D)/lxdialog $(MAKE) CC="$(HOSTCC_NOCCACHE)" HOSTCC="$(HOSTCC_NOCCACHE)" obj=$(@D) -C $(CONFIG) -f Makefile.br $(@F) |
然后反推出来，好像是：
1 2 3 4 5 6 | .PHONY: all world toolchain dirs clean distclean source outputmakefile \ legal-info legal-info-prepare legal-info-clean \ $(BASE_TARGETS) $(TARGETS) $(TARGETS_ALL) \ $(TARGETS_CLEAN) $(TARGETS_DIRCLEAN) $(TARGETS_SOURCE) $(TARGETS_LEGAL_INFO) \ $(TOOLCHAIN_DIR) $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \ $(HOST_DIR) $(BINARIES_DIR) $(STAMP_DIR) |
调用到了all：
1 | all: menuconfig |
->
1 2 3 | menuconfig: $(BUILD_DIR)/buildroot-config/mconf outputmakefile @mkdir -p $(BUILD_DIR)/buildroot-config @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN) |
->
1 2 3 | $(BUILD_DIR)/buildroot-config/%onf: mkdir -p $(@D)/lxdialog $(MAKE) CC="$(HOSTCC_NOCCACHE)" HOSTCC="$(HOSTCC_NOCCACHE)" obj=$(@D) -C $(CONFIG) -f Makefile.br $(@F) |
好像是的。
3.不管如何，此处，先去创建lxdialog文件夹，然后继续去：
1 | /usr/bin/make CC="/usr/bin/gcc" HOSTCC="/usr/bin/gcc" obj=/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config -C support/kconfig -f Makefile.br conf |
此处很明显，其实是对应的是：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | config: $(BUILD_DIR)/buildroot-config/conf outputmakefile @mkdir -p $(BUILD_DIR)/buildroot-config @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)oldconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile mkdir -p $(BUILD_DIR)/buildroot-config @$(COMMON_CONFIG_ENV) $< --oldconfig $(CONFIG_CONFIG_IN)randconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile @mkdir -p $(BUILD_DIR)/buildroot-config @$(COMMON_CONFIG_ENV) $< --randconfig $(CONFIG_CONFIG_IN)allyesconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile @mkdir -p $(BUILD_DIR)/buildroot-config @$(COMMON_CONFIG_ENV) $< --allyesconfig $(CONFIG_CONFIG_IN)allnoconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile @mkdir -p $(BUILD_DIR)/buildroot-config @$(COMMON_CONFIG_ENV) $< --allnoconfig $(CONFIG_CONFIG_IN)randpackageconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile @mkdir -p $(BUILD_DIR)/buildroot-config @grep -v BR2_PACKAGE_ $(BUILDROOT_CONFIG) > $(CONFIG_DIR)/.config.nopkg @grep '^config BR2_PACKAGE_' Config.in.legacy | \ while read config pkg; do \ echo "# $$pkg is not set" >> $(CONFIG_DIR)/.config.nopkg; done @$(COMMON_CONFIG_ENV) \ KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \ $< --randconfig $(CONFIG_CONFIG_IN) @rm -f $(CONFIG_DIR)/.config.nopkgallyespackageconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile @mkdir -p $(BUILD_DIR)/buildroot-config @grep -v BR2_PACKAGE_ $(BUILDROOT_CONFIG) > $(CONFIG_DIR)/.config.nopkg @grep '^config BR2_PACKAGE_' Config.in.legacy | \ while read config pkg; do \ echo "# $$pkg is not set" >> $(CONFIG_DIR)/.config.nopkg; done @$(COMMON_CONFIG_ENV) \ KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \ $< --allyesconfig $(CONFIG_CONFIG_IN) @rm -f $(CONFIG_DIR)/.config.nopkgallnopackageconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile @mkdir -p $(BUILD_DIR)/buildroot-config @grep -v BR2_PACKAGE_ $(BUILDROOT_CONFIG) > $(CONFIG_DIR)/.config.nopkg @$(COMMON_CONFIG_ENV) \ KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \ $< --allnoconfig $(CONFIG_CONFIG_IN) @rm -f $(CONFIG_DIR)/.config.nopkgsilentoldconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile @mkdir -p $(BUILD_DIR)/buildroot-config $(COMMON_CONFIG_ENV) $< --silentoldconfig $(CONFIG_CONFIG_IN)olddefconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile @mkdir -p $(BUILD_DIR)/buildroot-config $(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN)defconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile @mkdir -p $(BUILD_DIR)/buildroot-config @$(COMMON_CONFIG_ENV) $< --defconfig$(if $(DEFCONFIG),=$(DEFCONFIG)) $(CONFIG_CONFIG_IN)%_defconfig: $(BUILD_DIR)/buildroot-config/conf $(TOPDIR)/configs/%_defconfig outputmakefile @mkdir -p $(BUILD_DIR)/buildroot-config @$(COMMON_CONFIG_ENV) $< --defconfig=$(TOPDIR)/configs/$@ $(CONFIG_CONFIG_IN)savedefconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile @mkdir -p $(BUILD_DIR)/buildroot-config @$(COMMON_CONFIG_ENV) $< \ --savedefconfig=$(if $(DEFCONFIG),$(DEFCONFIG),$(CONFIG_DIR)/defconfig) \ $(CONFIG_CONFIG_IN) |
中的某一个。
4.然后去看了看对应的文件夹：
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\support\kconfig
以及其中的Makefile文件：
Makefile.br
然后其又用：
1 | include Makefile |
而调用了：
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\support\kconfig\Makefile
此处，即：
执行Makefile.br，传入conf的目标；
而Makefile.br先会去包含Makefile
5.但是具体执行逻辑没看懂。
但是通过：
1 2 | make[2]: Entering directory `/home/CLi/develop/buildroot/buildroot-2013.05/support/kconfig'/usr/bin/gcc -I/usr/include/ncursesw -DCURSES_LOC="<ncursesw/curses.h>" -DNCURSES_WIDECHAR=1 -DLOCALE -DKBUILD_NO_NLS -I/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config -DCONFIG_=\"\" -MM *.c > /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/.depend 2>/dev/null || : |
中的：
| 2>/dev/null |
而找到对应的地方了，是：
Makefile.br中的：
1 2 | $(obj)/.depend: $(wildcard *.h *.c) $(HOSTCC) $(HOST_EXTRACFLAGS) $(HOSTCFLAGS) -MM *.c > $@ 2>/dev/null || : |
此处，也不是完全懂，但是不关心。跳过。
后来看懂了一点：
是生成对应的依赖文件：
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\output\build\buildroot-config\.depend
此处其内容为：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | conf.o: conf.c lkc.h expr.h list.h lkc_proto.hconfdata.o: confdata.c lkc.h expr.h list.h lkc_proto.hexpr.o: expr.c lkc.h expr.h list.h lkc_proto.himages.o: images.ckxgettext.o: kxgettext.c lkc.h expr.h list.h lkc_proto.hmconf.o: mconf.c lkc.h expr.h list.h lkc_proto.h lxdialog/dialog.hmenu.o: menu.c lkc.h expr.h list.h lkc_proto.hnconf.o: nconf.c lkc.h expr.h list.h lkc_proto.h nconf.h \ /usr/include/ncursesw/curses.h /usr/include/ncursesw/menu.h \ /usr/include/ncursesw/panel.h /usr/include/ncursesw/form.h \ /usr/include/ncursesw/ncurses.hnconf.gui.o: nconf.gui.c nconf.h /usr/include/ncursesw/curses.h \ /usr/include/ncursesw/menu.h /usr/include/ncursesw/panel.h \ /usr/include/ncursesw/form.h /usr/include/ncursesw/ncurses.hsymbol.o: symbol.c lkc.h expr.h list.h lkc_proto.hutil.o: util.c lkc.h expr.h list.h lkc_proto.h |
6.接下来，主要是去编译一些.c文件：
1 2 3 4 5 6 7 8 9 | make[2]: Leaving directory `/home/CLi/develop/buildroot/buildroot-2013.05/support/kconfig'make[2]: Entering directory `/home/CLi/develop/buildroot/buildroot-2013.05/support/kconfig'/usr/bin/gcc -I/usr/include/ncursesw -DCURSES_LOC="<ncursesw/curses.h>" -DNCURSES_WIDECHAR=1 -DLOCALE -DKBUILD_NO_NLS -I/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config -DCONFIG_=\"\" -c conf.c -o /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/conf.o/usr/bin/gcc -I/usr/include/ncursesw -DCURSES_LOC="<ncursesw/curses.h>" -DNCURSES_WIDECHAR=1 -DLOCALE -DKBUILD_NO_NLS -I/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config -DCONFIG_=\"\" -I. -c /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/zconf.tab.c -o /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/zconf.tab.oIn file included from /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/zconf.tab.c:2500:0:./confdata.c: In function ‘conf_split_config’:./confdata.c:849:6: warning: assignment makes pointer from integer without a cast [enabled by default]/usr/bin/gcc -I/usr/include/ncursesw -DCURSES_LOC="<ncursesw/curses.h>" -DNCURSES_WIDECHAR=1 -DLOCALE -DKBUILD_NO_NLS -I/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config -DCONFIG_=\"\" /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/conf.o /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/zconf.tab.o -o /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/confrm /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/zconf.tab.c |
所以无需关心。
7.对于：
1 2 | make[2]: Leaving directory `/home/CLi/develop/buildroot/buildroot-2013.05/support/kconfig'BR2_DEFCONFIG='' KCONFIG_AUTOCONFIG=/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/auto.conf KCONFIG_AUTOHEADER=/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/autoconf.h KCONFIG_TRISTATE=/home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/tristate.config BUILDROOT_CONFIG=/home/CLi/develop/buildroot/buildroot-2013.05/.config /home/CLi/develop/buildroot/buildroot-2013.05/output/build/buildroot-config/conf --silentoldconfig Config.in |
则是去调用对应的conf，加上一堆参数，然后去silent的去配置。
传入的参数有
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\Config.in
存为对应的
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\.config
8.然后对于：
1 2 3 4 5 6 7 | make[1]: Leaving directory `/home/CLi/develop/buildroot/buildroot-2013.05'mkdir -p /home/CLi/develop/buildroot/buildroot-2013.05/output/targetrsync -a \ --exclude .empty --exclude .svn --exclude .git \ --exclude .hg --exclude=CVS --exclude '*~' \ /home/CLi/develop/buildroot/buildroot-2013.05/system/skeleton/ /home/CLi/develop/buildroot/buildroot-2013.05/output/target/cp support/misc/target-dir-warning.txt /home/CLi/develop/buildroot/buildroot-2013.05/output/target/THIS_IS_NOT_YOUR_ROOT_FILESYSTEM |
对应着，是：
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\Makefile
中的：
1 2 3 4 5 6 7 8 9 10 | $(BUILD_DIR)/.root: mkdir -p $(TARGET_DIR) rsync -a \ --exclude .empty --exclude .svn --exclude .git \ --exclude .hg --exclude=CVS --exclude '*~' \ $(TARGET_SKELETON)/ $(TARGET_DIR)/ cp support/misc/target-dir-warning.txt $(TARGET_DIR_WARNING_FILE) touch $@$(TARGET_DIR): $(BUILD_DIR)/.root |
作用是：
去创建target文件夹。
然后再去看看rsync的-a，–exclude参数的含义：
然后去拷贝target-dir-warning.txt文件。
而关于target-dir-warning.txt，即THIS_IS_NOT_YOUR_ROOT_FILESYSTEM，详见：
【整理】Buildroot生成的output/target下面的根文件系统rootfs不能直接使用
另外也去对比了rsync和cp：
9.然后对于后面的：
1 2 3 4 5 6 7 | >>> host-ccache 3.1.8 Extractingbzcat /home/CLi/develop/buildroot/buildroot-2013.05/dl/ccache-3.1.8.tar.bz2 | tar --strip-components=1 -C /home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-ccache-3.1.8 -xf ->>> host-ccache 3.1.8 Patching package//ccache>>> host-ccache 3.1.8 Updating config.sub and config.guessfor file in config.guess config.sub; do for i in $(find /home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-ccache-3.1.8 -name $file); do cp support/gnuconfig/$file $i; done; done>>> host-ccache 3.1.8 Patching libtool>>> host-ccache 3.1.8 Configuring |
都找不到对应的makefile是哪里的
其中，关于bzcat，是可以找到：
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\Makefile
中有：
1 | BZCAT:=$(call qstrip,$(BR2_BZCAT)) |
但是没找到被别人调用。
10.后来终于找到了，是在：
（此处忽略之前已经下载：
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\package\pkg-download.mk
的部分）
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\package\pkg-generic.mk
中的：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | # default extract command$(2)_EXTRACT_CMDS ?= \ $$(if $$($(2)_SOURCE),$$(INFLATE$$(suffix $$($(2)_SOURCE))) $(DL_DIR)/$$($(2)_SOURCE) | \ $(TAR) $(TAR_STRIP_COMPONENTS)=1 -C $$($(2)_DIR) $(TAR_OPTIONS) -)# Unpack the archive$(BUILD_DIR)/%/.stamp_extracted: @$(call MESSAGE,"Extracting") $(Q)mkdir -p $(@D) $($(PKG)_EXTRACT_CMDS) $(BUILD_DIR)/%/.stamp_patched: @$(call MESSAGE,"Patching $($(PKG)_DIR_PREFIX)/$(RAWNAME)") $(foreach hook,$($(PKG)_PRE_PATCH_HOOKS),$(call $(hook))$(sep)) $(foreach p,$($(PKG)_PATCH),support/scripts/apply-patches.sh $(@D) $(DL_DIR) $(p)$(sep)) $(Q)( \ for D in $(PATCH_BASE_DIRS); do \ if test -d $${D}; then \ if test -d $${D}/$($(PKG)_VERSION); then \ support/scripts/apply-patches.sh $(@D) $${D}/$($(PKG)_VERSION) \*.patch \*.patch.$(ARCH) || exit 1; \ else \ support/scripts/apply-patches.sh $(@D) $${D} \*.patch \*.patch.$(ARCH) || exit 1; \ fi; \ fi; \ done; \ ) $(foreach hook,$($(PKG)_POST_PATCH_HOOKS),$(call $(hook))$(sep)) $(Q)touch $@# Configure$(BUILD_DIR)/%/.stamp_configured: $(foreach hook,$($(PKG)_PRE_CONFIGURE_HOOKS),$(call $(hook))$(sep)) @$(call MESSAGE,"Configuring") $($(PKG)_CONFIGURE_CMDS) $(foreach hook,$($(PKG)_POST_CONFIGURE_HOOKS),$(call $(hook))$(sep)) $(Q)touch $@ |
去解压Extracting，打补丁Patching和配置Configuring的。其中在：
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\package\pkg-autotools.mk
中调用对应的PATCH的HOOK的：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | ## Utility function to upgrade config.sub and config.guess files## argument 1 : directory into which config.guess and config.sub need# to be updated. Note that config.sub and config.guess are searched# recursively in this directory.#define CONFIG_UPDATE for file in config.guess config.sub; do \ for i in $$(find $(1) -name $$file); do \ cp support/gnuconfig/$$file $$i; \ done; \ doneendef## Hook to update config.sub and config.guess if needed#define UPDATE_CONFIG_HOOK @$$(call MESSAGE,"Updating config.sub and config.guess") $$(call CONFIG_UPDATE,$$(@D))endef$(2)_POST_PATCH_HOOKS += UPDATE_CONFIG_HOOK |
此时，真正明白了：
是在：
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\package\pkg-generic.mk
中的：
1 2 3 4 5 6 7 | # Configure$(BUILD_DIR)/%/.stamp_configured: $(foreach hook,$($(PKG)_PRE_CONFIGURE_HOOKS),$(call $(hook))$(sep)) @$(call MESSAGE,"Configuring") $($(PKG)_CONFIGURE_CMDS) $(foreach hook,$($(PKG)_POST_CONFIGURE_HOOKS),$(call $(hook))$(sep)) $(Q)touch $@ |
中的：
1 | $($(PKG)_CONFIGURE_CMDS) |
去产生对应的：
| (cd /home/CLi/develop/buildroot/buildroot-2013.05/output/build/host-ccache-3.1.8/ && rm -rf config.cache; PATH=xxxxxx …… ) |
即，其中包含了我们此处关心的PATH的。
11.而对应的：
1 | $($(PKG)_CONFIGURE_CMDS) |
是在
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\package\pkg-autotools.mk
中的host的package的configure的：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | # Configure package for host# disable all kind of documentation generation in the process,# because it often relies on host tools which may or may not be# installed.define $(2)_CONFIGURE_CMDS (cd $$($$(PKG)_SRCDIR) && rm -rf config.cache; \ $$(HOST_CONFIGURE_OPTS) \ CFLAGS="$$(HOST_CFLAGS)" \ LDFLAGS="$$(HOST_LDFLAGS)" \ $$($$(PKG)_CONF_ENV) \ ./configure \ --prefix="$$(HOST_DIR)/usr" \ --sysconfdir="$$(HOST_DIR)/etc" \ --enable-shared --disable-static \ --disable-gtk-doc \ --disable-doc \ --disable-docs \ --disable-documentation \ --with-xmlto=no \ --with-fop=no \ $$($$(PKG)_CONF_OPT) \ )endefendifendif |
此处，对应着是：
1 | $$(HOST_CONFIGURE_OPTS) |
包括了我们关心的PATH变量的。
12.而
1 | $$(HOST_CONFIGURE_OPTS) |
是在：
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\package\Makefile.in
中的：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | TARGET_MAKE_ENV=PATH=$(TARGET_PATH) \ PERLLIB="$(HOST_DIR)/usr/lib/perl"HOST_CONFIGURE_OPTS=PATH=$(HOST_PATH) \ AR="$(HOSTAR)" \ AS="$(HOSTAS)" \ LD="$(HOSTLD)" \ NM="$(HOSTNM)" \ CC="$(HOSTCC)" \ GCC="$(HOSTCC)" \ CXX="$(HOSTCXX)" \ CPP="$(HOSTCPP)" \ CPPFLAGS="$(HOST_CPPFLAGS)" \ CFLAGS="$(HOST_CFLAGS)" \ CXXFLAGS="$(HOST_CXXFLAGS)" \ LDFLAGS="$(HOST_LDFLAGS)" \ PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 \ PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 \ PKG_CONFIG="$(PKG_CONFIG_HOST_BINARY)" \ PKG_CONFIG_SYSROOT_DIR="/" \ PKG_CONFIG_LIBDIR="$(HOST_DIR)/usr/lib/pkgconfig:$(HOST_DIR)/usr/share/pkgconfig" \ PERLLIB="$(HOST_DIR)/usr/lib/perl" \ LD_LIBRARY_PATH="$(HOST_DIR)/usr/lib:$(LD_LIBRARY_PATH)" |
至此，彻底明白了，对应的PATH，就是此处添加的：
1 | PATH=$(HOST_PATH) |
13.而对应的：
1 | HOST_PATH |
是对应的同文件：
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\package\Makefile.in
中的：
1 | HOST_PATH=$(HOST_DIR)/bin:$(HOST_DIR)/usr/bin:$(PATH) |
而其中是，直接包含：
1 | $(PATH) |
进来的。
所以：
cygwin中的PATH包含了Window中的一些变量，其中包含了空格和括号，导致之前出错的。
所以此处，应该是去对PATH得到的值，加上引号，估计就可以解决问题了。
【总结】
至此，算是搞懂了，绝大部分的，Buildroot中的make的逻辑。
也找到了真正的，此处所关心的，PATH路径引入的位置，是：
| D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\package\Makefile.in |
中的：
1 | HOST_PATH=$(HOST_DIR)/bin:$(HOST_DIR)/usr/bin:$(PATH) |
所以如果有路径方面的问题，估计就是关心一下package\Makefile.in中的各种路径变量即可。
后续问题的解决，详见：
【已解决】Cygwin下为xscale编译BuildRoot时make出错：/bin/sh: -c: line 0: syntax error near unexpected token `(‘