1.8. pass2-gcc-9.2.0
#!/bin/sh # Copyright © 1999-2020 Gerard Beekmans # Copyright © 2017-2020 Random Crew # Distributed under the terms of MIT License. MY_P="${P#pass2-}" MY_PD="${MY_P}"
Additional source handling
src_postfetch() { tar xf ${ANYSRCDIR}/mpfr-4.0.2.tar.xz mv mpfr-4.0.2 mpfr tar xf ${ANYSRCDIR}/gmp-6.2.0.tar.xz mv gmp-6.2.0 gmp tar xf ${ANYSRCDIR}/mpc-1.1.0.tar.gz mv mpc-1.1.0 mpc }
Additional patches handling
src_postprepare() { for file in gcc/config/{linux,i386/linux{,64}}.h do cp -u $file{,.orig} sed -e "s@/lib\(64\)\?\(32\)\?/ld@${PREFIX}&@g" \ -e "s@/usr@${PREFIX}@g" \ -e "s@/lib64@/lib@g" \ $file.orig > $file echo " #undef STANDARD_STARTFILE_PREFIX_1 #undef STANDARD_STARTFILE_PREFIX_2 #define STANDARD_STARTFILE_PREFIX_1 \"${PREFIX}/lib/\" #define STANDARD_STARTFILE_PREFIX_2 \"\"" >> $file touch $file.orig done case $(uname -m) in x86_64) sed -e '/m64=/s/lib64/lib/' \ -i.orig gcc/config/i386/t-linux64 ;; esac }
Configuration
As in pass1-gcc, additionally replace lib64 with lib:
-e "s@/lib64@/lib@g" \
Pass macros HAVE_DECL_VASPRINTF to configure:
CFLAGS="-DHAVE_DECL_VASPRINTF=1" \ CXXFLAGS="-DHAVE_DECL_VASPRINTF=1" \
include/libiberty.h contains its own prototype of function vasprintf, which is incompatible with system prototype from glibc, located in file $PREFIX/include/stdio.h. At minimum, versions glibc-2.27 and higher are incompatible.
gcc-7 and gcc-8 ignore the incompatibility, but our self-built pass1-gcc-9 does not. That results in multiple failures during configuration tests of pass2-gcc and the further build is screwed.
The macros above turns off the usage of prototype variant from include/libiberty.h.
Why gcc-9 does not handle the situation with vasprintf itself? That't unclear.
src_config() { sed -e '1161 s|^|//|' \ -i libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc mkdir -v build cd build CC=${LFS_TGT}-gcc \ CXX=${LFS_TGT}-g++ \ AR=${LFS_TGT}-ar \ RANLIB=${LFS_TGT}-ranlib \ CFLAGS="-DHAVE_DECL_VASPRINTF=1" \ CXXFLAGS="-DHAVE_DECL_VASPRINTF=1" \ ../configure \ --prefix=${PREFIX} \ --with-local-prefix=${PREFIX} \ --with-native-system-header-dir=${PREFIX}/include \ --enable-languages=c,c++ \ --disable-libstdcxx-pch \ --disable-multilib \ --disable-bootstrap \ --disable-libgomp }
Compilation
src_compile() { make ${MAKEOPTS} }
Installation
src_install() { make install ${MAKEOPTS} DESTDIR=$D ln -s gcc ${D}/${PREFIX}/bin/cc }
Links
- url.lfs:
- url.lfs.stage1: https://linuxfromscratch.org/lfs/view/9.1/chapter05/gcc-pass2.html