2010年06月23日 星期三
因为前面的工具链可能有时重复编译安装（LFS 学习日记（第5章构建临时系统之5.4. Binutils-2.20 - 第一遍） http://www.learndiary.com/home/space-1-do-blog-id-3792.html ），也许会引起问题，因为刚编译安装完成的工具可能马上会被使用，那么也许当第二次编译这个工具时使用了第一次编译的这个工具，这与LFS BOOK是不符合的。因此，决定重新编译工具链。作为宿主机的虚拟机内存以后为 512M 了。
命令即所用时间如下：
lfs:/mnt/lfs/sources/binutils-build$ time { ../binutils-2.20/configure --target=$LFS_TGT --prefix=/tools --disable-nls --disable-werror && make && make install; }
real 1m29.152s
user 1m17.121s
sys 1m21.221s
lfs:/mnt/lfs/sources/gcc-build$ time { ../gcc-4.4.3/configure --target=$LFS_TGT --prefix=/tools --disable-nls --disable-shared --disable-multilib --disable-decimal-float --disable-threads --disable-libmudflap --disable-libssp --disable-libgomp --enable-languages=c && make && make install; }
real 8m11.628s
user 7m36.129s
sys 5m3.607s
lfs:/mnt/lfs/sources/linux-2.6.32.15$ time { make mrproper && make headers_check && make INSTALL_HDR_PATH=dest headers_install && cp -rv dest/include/* /tools/include; }
real 0m16.629s
user 0m2.740s
sys 0m15.113s
lfs:/mnt/lfs/sources/glibc-build$ time { ../glibc-2.11.1/configure --prefix=/tools --host=$LFS_TGT --build=$(../glibc-2.11.1/scripts/config.guess) --disable-profile --enable-add-ons --enable-kernel=2.6.18 --with-headers=/tools/include libc_cv_forced_unwind=yes libc_cv_c_cleanup=yes && make && make install; }
real 8m11.960s
user 8m2.762s
sys 5m42.513s
编译glibc时摘录的config.log内容：
## ----------- ##
## Core tests. ##
## ----------- ##
configure:2028: checking build system type
configure:2046: result: i686-pc-linux-gnu
configure:2068: checking host system type
configure:2083: result: i686-lfs-linux-gnu
configure:2114: checking for i686-lfs-linux-gnu-gcc
configure:2130: found /tools/bin/i686-lfs-linux-gnu-gcc
configure:2141: result: i686-lfs-linux-gnu-gcc
configure:2413: checking for C compiler version
configure:2421: i686-lfs-linux-gnu-gcc --version >&5
i686-lfs-linux-gnu-gcc (GCC) 4.4.3
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
然后，备份tools目录，只保留tools/include的内容，删除glibc-build里面的内容，重新生成configparms文件和执行LFS BOOK中的configure步骤，得到config.log作为对比glibc的编译系统找不到除了API之外的已编译安装工具链的情况：
## ----------- ##
## Core tests. ##
## ----------- ##
configure:2028: checking build system type
configure:2046: result: i686-pc-linux-gnu
configure:2068: checking host system type
configure:2083: result: i686-lfs-linux-gnu
configure:2114: checking for i686-lfs-linux-gnu-gcc
configure:2144: result: no
configure:2154: checking for gcc
configure:2170: found /usr/bin/gcc
configure:2181: result: gcc
configure:2193: WARNING: using cross tools not prefixed with host triplet
configure:2413: checking for C compiler version
configure:2421: gcc --version >&5
gcc (Ubuntu 4.4.3-4ubuntu5) 4.4.3
Copyright (C) 2009 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
对比上面的内容，已昨天的试验一致（LFS 学习日记（第5章构建临时系统之5.7. Glibc-2.11.1 ） http://www.learndiary.com/home/space-1-do-blog-id-3795.html ）。
恢复已编译好的tools，进行调整工具链的学习。