printf 'BUILDING CROSS GCC\n'
mkdir -p $top_build_dir
cp -f $top_src_dir/gcc-10.3.0.tar.xz $top_build_dir
rm -Rf $top_build_dir/gcc-10.3.0
cd $top_build_dir
tar xf gcc-10.3.0.tar.xz

rm -Rf $top_build_dir/gcc
mkdir -p $top_build_dir/gcc
cd  $top_build_dir/gcc
# we are forced to put AR into PATH coze diarreha
mkdir -p $top_build_dir/gcc/bin
ln -sTf /nyan/toolchains/binutils-2.36.1-gcc-4.7.4/current/bin/x86_64-nyan2-linux-gnu-ar $top_build_dir/gcc/bin/ar
PATH_SAVED=$PATH
export PATH=/nyan/make/current/bin:$top_build_dir/gcc/bin:$PATH
export CC='/nyan/toolchains/binutils-2.36.1-gcc-4.7.4/current/bin/x86_64-nyan2-linux-gnu-gcc -B/nyan/glibc/current/lib -isystem /nyan/glibc/current/include -isystem /nyan/linux-headers/current/include -static-libgcc'
export CFLAGS='-O2 -fPIC -pipe'
export CXX='/nyan/toolchains/binutils-2.36.1-gcc-4.7.4/current/bin/x86_64-nyan2-linux-gnu-g++ -B/nyan/glibc/current/lib -isystem /nyan/glibc/current/include -isystem /nyan/linux-headers/current/include -isystem /nyan/toolchains/binutils-2.36.1-gcc-4.7.4/current/x86_64-nyan2-linux-gnu/include/c++/4.7.4/x86_64-nyan2-linux-gnu -isystem /nyan/toolchains/binutils-2.36.1-gcc-4.7.4/current/x86_64-nyan2-linux-gnu/include/c++/4.7.4 -static-libgcc -static-libstdc++'
export CXXFLAGS='-O2 -fPIC -pipe'
export "CFLAGS_FOR_TARGET=-O2 -pipe -fPIC -B$x86_system_lib_dir -L$x86_system_lib_dir -isystem $x86_system_header_dir -isystem /nyan/linux-headers/current/include"
export "CXXFLAGS_FOR_TARGET=-O2 -pipe -fPIC -B$x86_system_lib_dir -L$x86_system_lib_dir -isystem $x86_system_header_dir -isystem /nyan/linux-headers/current/include"
$top_build_dir/gcc-10.3.0/configure \
	--prefix=$install_dir \
	--target=i686-pc-linux-gnu \
	--disable-libquadmath \
	--disable-libada \
	--disable-libssp \
	--disable-bootstrap \
	--disable-host-shared \
	--disable-vtable-verify \
	--with-gpm=$install_dir \
	--with-mpfr=$install_dir \
	--with-mpc=$install_dir \
	--with-static-standard-libraries \
	--disable-nls \
	\
	--enable-decimal-float=no \
	--disable-fixed-point \
	--enable-threads=posix \
	--enable-tls \
	--disable-analyzer \
	--disable-gcov \
	--enable-languages=c,c++ \
	--disable-libssp \
	--disable-default-ssp \
	--enable-link-mutex \
	--disable-host-shared \
	--with-native-system-header-dir=$x86_system_header_dir \
	--enable-explicit-exception-frame-registration
unset CC
unset CLFLAGS
unset CXX
unset CXXFLAGS
# may need to set sysroot to /...
make -j $jobs_n all-gcc
make install-gcc

make -j $jobs_n all-target-libgcc
make install-target-libgcc

make -j $jobs_n all-target-libstdc++-v3
make install-target-libstdc++-v3

cd $top_build_dir
rm -Rf gcc-10.3.0.tar.xz gcc-10.3.0 gcc
export PATH=$PATH_SAVED