制作交叉工具链(龙芯)

系统环境：ubuntu10.04 + gcc-4.3.3
所需软件：
Binutils 2.20: http://ftp.gnu.org/gnu/binutils/binutils-2.20.tar.bz2
GCC Core 4.4.2: http://ftp.gnu.org/gnu/gcc/gcc-4.4.2/gcc-core-4.4.2.tar.bz2
Binutils 2.20 Loongson2f 补丁:

binutils-2.20-loongson2f.zip
设置环境变量和新建目录
$ mkdir -p /opt/loongson-cross-tools/usr/{bin, lib, share}
$ echo "PATH=$PATH:/opt/loongson-cross-tools/usr/bin" >> ~/.bashrc
编译 Binutils:
$ tar xjf binutils-2.20.tar.bz2
$ cd binutils-2.20
$ patch -Np1 -i ../binutils-2.20-loongson2f.patch //这步没做，没有找到patch
$ cd .. && mkdir binutils-build && cd binutils-build
$ ../binutils-2.20/configure --prefix=/opt/loongson-cross-tools/usr --target=mipsel-pc-linux-gnu --with-sysroot=/opt/loongson-cross-tools --enable-64-bit-bfd --disable-nls --enable-shared
$ make configure-host
$ make
$ make install
出错信息：
rm -rf $backupdir; exit $rc
WARNING: `makeinfo' is missing on your system. You should only need it if
you modified a `.texi' or `.texinfo' file, or any other file
indirectly affecting the aspect of the manual. The spurious
call might also be the consequence of using a buggy `make' (AIX,
DU, IRIX). You might want to install the `Texinfo' package or
the `GNU make' package. Grab either from any GNU archive site.
make[4]: *** [as.info] Error 1
make[4]: Leaving directory `/home/loongson/loongson-cross-tool/binutils-build/gas/doc'
make[3]: *** [install-am] Error 2
make[3]: Leaving directory `/home/loongson/loongson-cross-tool/binutils-build/gas/doc'
Making install in po
make[3]: Entering directory `/home/loongson/loongson-cross-tool/binutils-build/gas/po'
make[3]: Nothing to be done for `install'.
make[3]: Leaving directory `/home/loongson/loongson-cross-tool/binutils-build/gas/po'
make[3]: Entering directory `/home/loongson/loongson-cross-tool/binutils-build/gas'
make[4]: Entering directory `/home/loongson/loongson-cross-tool/binutils-build/gas'
/bin/bash ../../binutils-2.20/gas/../mkinstalldirs /opt/loongson-cross-tools/usr/bin
/bin/bash ./libtool --mode=install /usr/bin/install -c as-new /opt/loongson-cross-tools/usr/bin/mipsel-pc-linux-gnu-as
libtool: install: /usr/bin/install -c .libs/as-new /opt/loongson-cross-tools/usr/bin/mipsel-pc-linux-gnu-as
/bin/bash ../../binutils-2.20/gas/../mkinstalldirs /opt/loongson-cross-tools/usr/mipsel-pc-linux-gnu/bin
n=`echo as | sed 's&^&mipsel-pc-linux-gnu-&'`; \
if [ "/opt/loongson-cross-tools/usr/bin/$n" != "/opt/loongson-cross-tools/usr/mipsel-pc-linux-gnu/bin/as" ]; then \
rm -f /opt/loongson-cross-tools/usr/mipsel-pc-linux-gnu/bin/as; \
ln /opt/loongson-cross-tools/usr/bin/$n /opt/loongson-cross-tools/usr/mipsel-pc-linux-gnu/bin/as >/dev/null 2>/dev/null \
|| /bin/bash ./libtool --mode=install /usr/bin/install -c as-new /opt/loongson-cross-tools/usr/mipsel-pc-linux-gnu/bin/as; \
else \
true ; \
fi
make[4]: Nothing to be done for `install-data-am'.
make[4]: Leaving directory `/home/loongson/loongson-cross-tool/binutils-build/gas'
make[3]: Leaving directory `/home/loongson/loongson-cross-tool/binutils-build/gas'
make[2]: *** [install-recursive] Error 1
make[2]: Leaving directory `/home/loongson/loongson-cross-tool/binutils-build/gas'
make[1]: *** [install-gas] Error 2
make[1]: Leaving directory `/home/loongson/loongson-cross-tool/binutils-build'
make: *** [install] Error 2
参考解决办法：
原因是本机没有安装texinfo,安装之后版本也不够高,顾修改configure文件
$ sudo apt-get install texinfo
$ makeinfo --version
makeinfo (GNU texinfo) 4.13
$ vim ../binuitl-2.20/configure
将


改成：



$ make install
编译 GCC:
$ tar xjf gcc-core-4.4.2.tar.bz2
$ mkdir gcc-build && cd gcc-build
$ ../gcc-4.4.2/configure --prefix=/opt/loongson-cross-tools/usr --target=mipsel-pc-linux-gnu --with-sysroot=/opt/loongson-cross-tools --disable-multilib --with-newlib --disable-nls --disable-shared --disable-threads --enable-languages=c --with-abi=64
出错信息：
configure: error: Building GCC requires GMP 4.1+ and MPFR 2.3.2+.
Try the --with-gmp and/or --with-mpfr options to specify their locations.
Copies of these libraries' source code can be found at their respective
hosting sites as well as at ftp://gcc.gnu.org/pub/gcc/infrastructure/. See also http://gcc.gnu.org/install/prerequisites.html for additional info.
If you obtained GMP and/or MPFR from a vendor distribution package, make
sure that you have installed both the libraries and the header files.
They may be located in separate packages.
参考解决办法： http://ftp.gnu.org/gnu/gmp/ #gmp下载 http://ftp.gnu.org/gnu/mpfr/ #mpfr下载

$ tar xf tar xf gmp-5.0.1.tar.bz2
$ tar xf mpfr-3.0.0.tar.bz2
$ mv gmp-5.0.1/ gmp
$ mv mpfr-3.0.0/ mpfr
$ mv gmp/ mpfr/ gcc-4.4.2/
$ cd gcc-build
$ ../gcc-4.4.2/configure --prefix=/opt/loongson-cross-tools/usr --target=mipsel-pc-linux-gnu --with-sysroot=/opt/loongson-cross-tools --disable-multilib --with-newlib --disable-nls --disable-shared --disable-threads --enable-languages=c --with-abi=64
$ make all-gcc
出错信息：
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... no
checking whether to build static libraries... yes
checking whether gcc __attribute__ ((mode (XX))) works... yes
checking for recent GMP... yes
checking for gmp internal files... configure: error: header files gmp-impl.h and longlong.h not found
make: *** [configure-mpfr] Error 1
参考解决办法：
换mpfr3.0为mpfr2.4.2
因为mpfr3.0改了默认路径(网上如此说)
$ tar xf mpfr-2.4.2.tar.bz2
$ mv mpfr-2.4.2/ mpfr
$ rm gcc-4.4.2/mpfr
$ mv mpfr gcc-4.4.2

$ make all-gcc
$ make all-target-libgcc
$ make install-gcc
$ make install-target-libgcc

参考资料：
https://heiher.info/916.html
http://www.linuxsir.org/bbs/showthread.php?t=338748
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44455
http://blog.sina.com.cn/s/blog_4e9da0010100dhvk.html

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