[Linux From Scratch 作一个自己的Linux操作系统发行版本]三、编译gcc

本是古典何须时尚 2022-12-05 12:25 68阅读 0赞

执行指令

#!/bin/bash
    
    tar -jxf $LFS/sources/gcc-6.3.0.tar.bz2
    (
    	cd gcc-6.3.0/
    	# GCC now requires the GMP, MPFR and MPC packages
    	tar -xf $LFS/sources/mpfr-3.1.5.tar.xz
    	mv -v mpfr-3.1.5 mpfr
    	tar -xf $LFS/sources/gmp-6.1.2.tar.xz
    	mv -v gmp-6.1.2 gmp
    	tar -xf $LFS/sources/mpc-1.0.3.tar.gz
    	mv -v mpc-1.0.3 mpc
    	# The following command will change the location of GCC's default dynamic linker to use the one installed in /tools.
    	# It also removes /usr/include from GCC's include search path.
    	for file in gcc/config/{linux,i386/linux{,64}}.h
    		do
    		cp -uv $file{,.orig}
    		sed -e 's@/lib$64$\?$32$\?/ld@/tools&@g' \
    		-e 's@/usr@/tools@g' $file.orig > $file
    		echo '
    		#undef STANDARD_STARTFILE_PREFIX_1
    		#undef STANDARD_STARTFILE_PREFIX_2
    		#define STANDARD_STARTFILE_PREFIX_1 "/tools/lib/"
    		#define STANDARD_STARTFILE_PREFIX_2 ""' >> $file
    		touch $file.orig
    	done
    
    	# on x86_64 hosts, set the default directory name for 64-bit libraries to “lib”
    	case $(uname -m) in
    	x86_64)
    	sed -e '/m64=/s/lib64/lib/' \
    	-i.orig gcc/config/i386/t-linux64
    	;;
    	esac
    
    	mkdir -v build    
    	cd build
    	../configure \
    		--target=$LFS_TGT \
    		--prefix=/tools \
    		--with-glibc-version=2.11 \
    		--with-sysroot=$LFS \
    		--with-newlib \
    		--without-headers \
    		--with-local-prefix=/tools \
    		--with-native-system-header-dir=/tools/include \
    		--disable-nls \
    		--disable-shared \
    		--disable-multilib \
    		--disable-decimal-float \
    		--disable-threads \
    		--disable-libatomic \
    		--disable-libgomp \
    		--disable-libmpx \
    		--disable-libquadmath \
    		--disable-libssp \
    		--disable-libvtv \
    		--disable-libstdcxx \
    		--enable-languages=c,c++
        
    	make -j12	
    	make install    
    )
    rm -fr gcc-6.3.0/