Second toolchain
2.2.3 preparation
1) create new user vita
Groupadd vita
Useradd-m-s / bin/bash-g vita vita
2) add file vita to / etc/sudoers.d, file content is below:
Vita ALL= (ALL) NOPASSWD: ALL
3) mkdir / vita
4) mkdir source build cross-tool cross-gcc-tmp sysroot
5) chown-R vita.vita / vita
6) add below content to / home/vita/.bashrc
Unset LANG
Export HOST=i686-pc-linux-gnu
Export BUILD=$HOST
Export TARGET=i686-none-linux-gnu
Export CROSS_TOOL=/vita/cross-tool
Export CROSS_GCC_TMP=/vita/cross-gcc-tmp
Export SYSROOT=/vita/sysroot
PATH=$CROSS_TOOL/bin:$CROSS_GCC_TMP/bin:/sbin:/usr/sbin:$PATH
7) su-vita
2.2.4 install binutils
1) tar xvf.. / source/binutils-2.23.1.tar.bz2
2) mkdir binutils-build
3) cd binutils-build
4).. / binutils-2.23.1/configure-- prefix=$CROSS_TOOL-- target=$TARGET-- with-sysroot=$SYSROOT
5) make
6) make install
2.2.5 compile freestanding cross tool
1) cd / vita/build
2) tar xvf.. / source/gcc-4.7.2.tar.bz2
Cd gcc-4.7.2/
Tar xvf.. /.. / source/gmp-5.0.5.tar.bz2
Mv gmp-5.0.5/ gmp
Tar xvf.. /.. / source/mpc-1.0.1.tar.gz
Mv mpc-1.0.1/ mpc
Tar xvf.. /.. / source/mpfr-3.1.1.tar.bz2
Mv mpfr-3.1.1/ mpfr
Cd / vita/build
Mkdir gcc-build
Cd gcc-build
.. / gcc-4.7.2/configure-- prefix=$CROSS_GCC_TMP-- target=$TARGET-- with-sysroot=$SYSROOT-- with-newlib-- enable-languages=c-- with-mpfr-include=/vita/build/gcc-4.7.2/mpfr/src-- with-mpfr-lib=/vita/build/gcc-build/mpfr/src/.libs-- disable-shared-- disable-threads-- disable-decimal-float-- disable-libquadmath-- disable-libmudflap-- disable-libgomp-- disable-nls-- disable-libssp
Make
Make install
Cd / vita/cross-gcc-tmp
Ln-s libgcc.a lib/gcc/i686-none-linux-gnu/4.7.2/libgcc_eh.a
2.2.6 install kernel header file
Cd / vita/build
Tar xvf.. / source/linux-3.7.4.tar.xz
Cd linux-3.7.4/
Make mrproper
Make ARCH=i386 headers_check
Make ARCH=i386 INSTALL_HDR_PATH=$SYSROOT/usr/ headers_install
2.2.7 compile object system C library
Apt-get install gawk
Cd / vita/build
Tar xvf.. / source/glibc-2.15.tar.xz
Cd glibc-2.15
Patch-p1 <.. /.. / source/glibc-2.15-cpuid.patch
Patch-p1 <.. /.. / source/glibc-2.15-s_frexp.patch
Mkdir glibc-build
Cd glibc-build
.. / glibc-2.15/configure-prefix=/usr-host=$TARGET-enable-kernel=3.7.4-enable-add-ons-with-headers=$SYSROOT/usr/include libc_cv_forced_unwind=yes libc_cv_c_cleanup=yes libc_cv_ctors_header=yes
Make
Make install_root=$SYSROOT install
2.2.8 setup whole cross compiler
Cd / vita/build/gcc-build
Rm-rf *
.. / gcc-4.7.2/configure-prefix=$CROSS_TOOL-- target=$TARGET-- with-sysroot=$SYSROOT-- with-mpfr-include=/vita/build/gcc-4.7.2/mpfr/src-- with-mpfr-lib=/vita/build/gcc-build/mpfr/src/.libs-- enable-languages=c,c++-- enable-threads=posix
Make
Make install
2.2.9 set the environment variable
1) add below content to / home/vita/.bashrc
Export CC= "$TARGET-gcc"
Export CXX= "$TARGET-g++"
Export AR= "$TARGET-ar"
Export AS= "$TARGET-as"
Export RANLIB= "$TARGET-ranlib"
Export LD= "$TARGET-ld"
Export STRIP= "$TARGET-strip"
Export DESTDIR=$SYSROOT
2) source / home/vita/.bashrc
2.2.10 encapsulate cross pkg-config
1) add below content to .bashrc
Unset PKG_CONFIG_PATH
Export PKG_CONFIG_LIBDIR=$SYSROOT/usr/lib/pkgconfig:\
$SYSROOT/usr/share/pkgconfig
2) add file / vita/cross-tool/bin/pkg-config
#! / bin/bash
HOST_PKG_CFG=/usr/bin/pkg-config
If [! $SYSROOT]; then
Echo "Please make sure you are in cross-compile environment!"
Exit 1
Fi
$HOST_PKG_CFG-- exists $*
If [$?-ne 0]; then
Exit 1
Fi
If $HOST_PKG_CFG $* | sed-e "s/-I/-I\ / vita\ / sysroot/g;\"
S/-L/-L\ / vita\ / sysroot/g "
Then
Exit 0
Else
Exit 1
Fi
3) chmod aquix / vita/cross-tool/bin/pkg-config
2.2.11 handle libtool
Find $SYSROOT-name "* .la"-exec rm-f'{}'\
2.2.12 start code
Foo.c
# include
Void myinit (int argc, char * argv, char * * envp)
{
Printf ("% s\ n", _ _ FUNCTION__)
}
_ _ attribute__ ((section (".init _ array")) typeof (myinit) * _ myinit = myinit
Void test ()
{
Printf ("% s\ n", _ _ FUNCTION__)
}
Bar.c
# include
Void main ()
{
Printf ("Enter main.\ n")
Test ()
}
# gcc-shared-fPIC foo.c-o libfoo.so
# gcc bar.c-o bar-L.L /-lfoo
# LD_LIBRARY_PATH=./. / bar
Myinit
Enter main.
Test
