gcc-4.5.0 build脚本

昨天(当地时间2010-4-14),gcc-4.5.0发布,4.5.0还在svn时就受到无数大牛的追捧,它一出来我就尝试编译,不过昨天到睡觉都没能完成,早上起来上网发现原来4.5.0需要mpc支持:

"GCC has been integrated with the MPC library. This allows GCC to evaluate complex arithmetic at compile time more accurately. It also allows GCC to evaluate calls to complex built-in math functions having constant arguments and replace them at compile time with their mathematically equivalent results. In doing so, GCC can generate correct results regardless of the math library implementation or floating point precision of the host platform. This also allows GCC to generate identical results regardless of whether one compiles in native or cross-compile configurations to a particular target. The following built-in functions take advantage of this new capability: cacos, cacosh, casin, casinh, catan, catanh, ccos, ccosh, cexp, clog, cpow, csin, csinh, csqrt, ctan, and ctanh. The float and long double variants of these functions (e.g. csinf and csinl) are also handled."

下载编译之果然就通过了...

下面是编译脚本(具体参考LFS和):

# download

wget

wget

wget

wget

# tools PATH; use your own setting

ROOTDIR=/work/tools/stesen/tools

mkdir -pv $ROOTDIR

ln -svf $ROOTDIR /

#  optimization(core2 T7250,运算速度优化参数)

CFLAGS="-march=native -mfpmath=sse,387 -minline-all-stringops -pipe -O3 -fomit-frame-pointer -fforce-addr -finline-functions -finline-limit=800-fmove-all-movables -freduce-all-givs -freorder-blocks-freorder-functions -fexpensive-optimizations -falign-functions-falign-labels -falign-loops -falign-jumps -frename-registers -fweb-funit-at-a-time -funroll-loops -fprefetch-loop-arrays-ffunction-sections -fdata-sections -fbranch-target-load-optimize-fbranch-target-load-optimize2" && CXXFLAGS=CFLAGS

###########################################################

# 64位cpu装32位系统的用此CFLAGS可能会导致编译失败

# 指定ABI可以解决,或者使用系统的gmp,mpfr,gpc

# aptitude install libgmp3-dev libmpfr-dev libmpc2 libmpc-dev

# configure时不指定--with-XXX=/tools 

############################################################

# gmp

tar xvf gmp-5.0.1.tar.bz2 

cd gmp-5.0.1/

./configure --prefix=/tools --enable-cxx --enable-mpbsd

make -j3

make install

cd ..

rm -fr gmp-5.0.1

# mpfr

tar xf mpfr-2.4.2.tar.bz2 

cd mpfr-2.4.2/

./configure --prefix=/tools --enable-thread-safe --with-gmp=/tools

make -j3

make install

cd ..

rm -fr mpfr-2.4.2

# mpc

tar xvf mpc-0.8.1.tar.gz 

cd mpc-0.8.1/

./configure --with-mpfr=/tools --with-gmp=/tools --prefix=/tools 

make -j3

make install

cd ..

rm -fr mpc-0.8.1

# gcc

tar xvf gcc-4.5.0.tar.bz2 

cd gcc-4.5.0/

mkdir -v ../gcc-build

cd ../gcc-build

../gcc-4.5.0/configure --prefix=/tools --enable-shared --enable-threads=posix --enable-__cxa_atexit     --enable-clocale=gnu --enable-languages=c,c++ --disable-multilib --disable-bootstrap --with-gmp=/tools --with-mpfr=/tools --with-mpc=/tools

make -j3

make install

cd ..

rm -fr gcc-build

rm -fr gcc-4.5.0