Details on this package are located in Section 10.18.2, “Contents of GCC.”
The GCC package contains the GNU compiler collection, which includes the C and C++ compilers.
Make a couple of essential adjustments to GCC's specs to ensure GCC uses our build environment:
patch -Np1 -i ../gcc-7.1.0-specs-1.patch
Change the StartFile Spec so that GCC looks in /tools:
echo -en '\n#undef STANDARD_STARTFILE_PREFIX_1\n#define STANDARD_STARTFILE_PREFIX_1 "/tools/lib/"\n' >> gcc/config/rs6000/sysv4.h echo -en '\n#undef STANDARD_STARTFILE_PREFIX_2\n#define STANDARD_STARTFILE_PREFIX_2 ""\n' >> gcc/config/rs6000/sysv4.h
The GCC documentation recommends building GCC outside of the source directory in a dedicated build directory:
mkdir -v ../gcc-build cd ../gcc-build
Prepare GCC for compilation:
AR=ar \
LDFLAGS="-Wl,-rpath,/cross-tools/lib" \
../gcc-7.1.0/configure \
--prefix=/cross-tools \
--build=${CLFS_HOST} \
--target=${CLFS_TARGET} \
--host=${CLFS_HOST} \
--with-sysroot=${CLFS} \
--with-local-prefix=/tools \
--with-native-system-header-dir=/tools/include \
--disable-nls \
--disable-static \
--enable-languages=c,c++ \
--disable-multilib \
--with-mpc=/cross-tools \
--with-mpfr=/cross-tools \
--with-gmp=/cross-tools \
--with-isl=/cross-tools
The meaning of the new configure options:
--enable-languages=c,c++
This option ensures that only the C and C++ compilers are built.
Continue with compiling the package:
make AS_FOR_TARGET="${CLFS_TARGET}-as" \
LD_FOR_TARGET="${CLFS_TARGET}-ld"
Install the package:
make install
Details on this package are located in Section 10.18.2, “Contents of GCC.”