【记录】尝试分析Buildroot在make menuconfig后make时的内部执行逻辑
【背景】
https://www.crifan.com/try_analysis_buildroot_after_make
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：
|
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|
CLi@PC-CLI-1 ~
/develop/buildroot/buildroot-2013
.05
$
make
/usr/bin/make
-j4 HOSTCC=
"/usr/bin/gcc"
HOSTCXX=
"/usr/bin/g++"
silentoldconfig
make
[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 conf
make
[2]: Entering directory `
/home/CLi/develop/buildroot/buildroot-2013
.05
/support/kconfig
'
/usr/bin/gcc
-I
/usr/include/ncursesw
-DCURSES_LOC=
"
-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=
"
-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=
"
-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.o
In
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=
"
-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/conf
rm
/home/CLi/develop/buildroot/buildroot-2013
.05
/output/build/buildroot-config/zconf
.tab.c
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
make
[1]: Leaving directory `
/home/CLi/develop/buildroot/buildroot-2013
.05'
mkdir
-p
/home/CLi/develop/buildroot/buildroot-2013
.05
/output/target
rsync
-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
touch
/home/CLi/develop/buildroot/buildroot-2013
.05
/output/build/
.root
>>> host-ccache 3.1.8 Extracting
bzcat
/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.guess
for
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 1
CLi@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) $< $(CONFIG_CONFIG_IN)
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->
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$(BUILD_DIR)/buildroot-config/%onf:
mkdir -p $(@D)/lxdialog
$(MAKE) CC="$(HOSTCC_NOCCACHE)" HOSTCC="$(HOSTCC_NOCCACHE)" obj=$(@D) -C $(CONFIG) -f Makefile.br $(@F)
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好像是的。
3.不管如何，此处，先去创建lxdialog文件夹，然后继续去：
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/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
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此处很明显，其实是对应的是：
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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 "# $$pkg is not set" >> $(CONFIG_DIR)/.config.nopkg; done
@$(COMMON_CONFIG_ENV) \
KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
$< --randconfig $(CONFIG_CONFIG_IN)
@rm -f $(CONFIG_DIR)/.config.nopkg
allyespackageconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
@mkdir -p $(BUILD_DIR)/buildroot-config
@grep -v BR2_PACKAGE_ $(BUILDROOT_CONFIG) > $(CONFIG_DIR)/.config.nopkg
@grep '^config BR2_PACKAGE_' Config.in.legacy | \
while read config pkg; do \
echo "# $$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.nopkg
allnopackageconfig: $(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.nopkg
silentoldconfig: $(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) \
$(CONFIG_CONFIG_IN)
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中的某一个。
4.然后去看了看对应的文件夹：
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\support\kconfig
以及其中的Makefile文件：
Makefile.br
然后其又用：
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include Makefile
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而调用了：
D:\tmp\tmp_dev_root\cgwin\home\CLi\develop\buildroot\buildroot-2013.05\support\kconfig\Makefile
此处，即：
执行Makefile.br，传入conf的目标；
而Makefile.br先会去包含Makefile
5.但是具体执行逻辑没看懂。
但是通过：
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make
[2]: Entering directory `
/home/CLi/develop/buildroot/buildroot-2013
.05
/support/kconfig
'
/usr/bin/gcc
-I
/usr/include/ncursesw
-DCURSES_LOC=
"
-DNCURSES_WIDECHAR=1 -DLOCALE -DKBUILD_NO_NLS -I
/home/CLi/develop/buildroot/buildroot-2013
.05
/output/build/buildroot-config
-DCONFIG_=\"\" -MM *.c >
/home/CLi/develop/buildroot/buildroot-2013
.05
/output/build/buildroot-config/
.depend 2>
/dev/null
|| :
|
中的：
| 2>/dev/null |
而找到对应的地方了，是：
Makefile.br中的：
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$(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：
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conf.o: conf.c lkc.h expr.h list.h lkc_proto.h
confdata.o: confdata.c lkc.h expr.h list.h lkc_proto.h
expr.o: expr.c lkc.h expr.h list.h lkc_proto.h
images.o: images.c
kxgettext.o: kxgettext.c lkc.h expr.h list.h lkc_proto.h
mconf.o: mconf.c lkc.h expr.h list.h lkc_proto.h lxdialog/dialog.h
menu.o: menu.c lkc.h expr.h list.h lkc_proto.h
nconf.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.h
nconf.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.h
symbol.o: symbol.c lkc.h expr.h list.h lkc_proto.h
util.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：
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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=
"
-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=
"
-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.o
In
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=
"
-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
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