Compiled on X8DTU with 2 physical Intel Xeon E5530 CPU (8C16T)

Compile Flags:

unset CFLAGS CXXFLAGS LDFLAGS

Dependencies: (some of them are not required, I'm just following 'compile_tc12_x86_64' to be safe)

tce-load -i compiletc perl5 ncursesw-dev bash mpc-dev udev-lib-dev texinfo coreutils glibc_apps rsync gettext python3.6 git

Commands:

cd gcc-10.2.0

sed -e '/m64=/s/lib64/lib/' -i.orig gcc/config/i386/t-linux64

###  edit gcc/config/i386/linux64.h
###  #define GLIBC_DYNAMIC_LINKER64 "/lib/ld-linux-x86-64.so.2"
###  edit with sed

sed -i '/GLIBC_DYNAMIC_LINKER64/ s:/lib64/:/lib/:' gcc/config/i386/linux64.h

mkdir build
cd build

CC="gcc -mtune=generic -Os -pipe" CXX="g++ -mtune=generic -Os -pipe" ../configure --prefix=/usr/local --enable-languages=c,c++,fortran --disable-multilib --disable-bootstrap --with-system-zlib --libexecdir=/usr/local/lib

find . -name Makefile -type f -exec sed -i 's/-g -O2//g' {} \;
find . -name Makefile -type f -exec sed -i 's/-O2 -g//g' {} \;
find . -name config.status -type f -exec sed -i 's/-g -O2//g' {} \;

time make -j15
real    7m 46.25s
user    1h 10m 04s
sys     4m 23.12s

make DESTDIR=/tmp/packing install

cd /tmp

mkdir -p packing-lib/usr/local/lib

# shared objects first
mv /tmp/packing/usr/local/lib/libgfortran.so* packing-lib/usr/local/lib

strip --strip-unneeded packing-lib/usr/local/lib/libgfortran.so.5.0.0

mkdir -p packing-main/usr/local/lib/gcc/x86_64-pc-linux-gnu/10.2.0/

# f951
mv packing/usr/local/lib/gcc/x86_64-pc-linux-gnu/10.2.0/f951 packing-main/usr/local/lib/gcc/x86_64-pc-linux-gnu/10.2.0/

# finclude/
mv packing/usr/local/lib/gcc/x86_64-pc-linux-gnu/10.2.0/finclude/ packing-main/usr/local/lib/gcc/x86_64-pc-linux-gnu/10.2.0/

# libcaf_single.a, libcaf_single.la
mv packing/usr/local/lib/gcc/x86_64-pc-linux-gnu/10.2.0/libcaf_single.* packing-main/usr/local/lib/gcc/x86_64-pc-linux-gnu/10.2.0/

# libgfortran.a, libgfortran.la, libgfortran.spec
mv packing/usr/local/lib/libgfortran.* packing-main/usr/local/lib/

# binaries
mkdir packing-main/usr/local/bin

mv packing/usr/local/bin/*gfortran packing-main/usr/local/bin

strip --strip-unneeded packing-main/usr/local/bin/* packing-main/usr/local/lib/gcc/x86_64-pc-linux-gnu/10.2.0/f951

# liblto_plugin (75K --> 76K)
mv packing/usr/local/lib/gcc/x86_64-pc-linux-gnu/10.2.0/liblto_plugin.so.0.0.0 packing-main/usr/local/lib/gcc/x86_64-pc-linux-gnu/10.2.0/GFORTRAN-liblto_plugin.so.0.0.0
strip --strip-unneeded packing-main/usr/local/lib/gcc/x86_64-pc-linux-gnu/10.2.0/GFORTRAN-liblto_plugin.so.0.0.0

# tce.installed
#!/bin/sh
TEMPDIR=$(mktemp -d)
cp /usr/local/bin/gfortran $TEMPDIR
mv -f ${TEMPDIR}/gfortran /usr/local/bin
cp /usr/local/bin/x86_64-pc-linux-gnu-gfortran $TEMPDIR
mv -f ${TEMPDIR}/x86_64-pc-linux-gnu-gfortran /usr/local/bin
cp /usr/local/lib/gcc/x86_64-pc-linux-gnu/10.2.0/f951 $TEMPDIR
mv -f ${TEMPDIR}/f951 /usr/local/lib/gcc/x86_64-pc-linux-gnu/10.2.0
rm -fr $TEMPDIR
mkdir -p /usr/local/lib/bfd-plugins
cp -f /usr/local/lib/gcc/x86_64-pc-linux-gnu/10.2.0/GFORTRAN-liblto_plugin.so.0.0.0 /usr/local/lib/bfd-plugins/liblto_plugin.so