Build a cross-compiler for x86_64-sun-solaris2.11

build-linux-illumos-gcc.sh

#!/bin/bash

# Tested against SmartOS (build: 20200117T180335Z)
# Should work on any x86_64-sun-solaris2.11 operating system tho

# Fail on any error
set -e

PREFIX=~/Dokumente/cross/x86_64-sun-solaris2.11
SYSROOT=$PREFIX/sysroot
BUILD_DIR=$PREFIX/build
PATH=$PREFIX/bin:$PATH

TARGET="x86_64-sun-solaris2.11"

# This variable is later used to extract libraries from the operating system to build our local SYSROOT
# It is used as `ssh $DONOR_SERVER ...`
# (Note for people looking to build a cross-compiler for SmartOS: i used the libraries from a base-64 zone, i haven't tried whether it'll work with libraries from the global zone tho) (cross-compiler works on SmartOS (build: 20200117T180335Z))

DONOR_SERVER="-p 26 root@192.168.0.143"


# Dependencies
# ------------
# Confirmed to work on:
# * binutils-2.36.1 + gcc-10.3.0

BINUTILS="binutils-2.36.1"
GCC="gcc-10.3.0"


# Misc Variables
# --------------

HOST=$(gcc -dumpmachine)
MAKE_ARGS="-j16"

# -------------

mkdir -p $PREFIX
mkdir -p $SYSROOT
mkdir -p $BUILD_DIR

# Download system headers
cd $SYSROOT

# Shamelessly taken from:
# https://gist.githubusercontent.com/AlainODea/6679613/raw/69ed7c94fde4585b0842d1f433f5b838c547038f/setup_cross_gcc_linux_illumos.sh
echo "Downloading libraries from donor..."

ssh $DONOR_SERVER "pkgin -y up && pkgin -y ug && pkgin -y in gmp"
ssh $DONOR_SERVER "tar -cf - /usr/include" | tar -xf -
ssh $DONOR_SERVER "tar -cf - /opt/local/include" | tar -xf -
ssh $DONOR_SERVER "tar -cf - /opt/local/gcc47/include" | tar -xf -
ssh $DONOR_SERVER "tar -cf - /lib" | tar -xf -
ssh $DONOR_SERVER "tar -cf - /usr/lib" | tar -xf -
ssh $DONOR_SERVER "tar -cf - /usr/gnu/lib" | tar -xf -

echo "Finished, changing ownership to $USER"
sudo chown -R $USER:$USER .

# Download and compile GNU binutils
cd $BUILD_DIR
echo "Downloading $BINUTILS..."
wget https://ftp.gnu.org/gnu/binutils/$BINUTILS.tar.gz
tar xf $BINUTILS.tar.gz

mkdir build-binutils && cd build-binutils

../$BINUTILS/configure --host=$HOST --target=$TARGET --prefix=$PREFIX --disable-nls --with-sysroot=$SYSROOT -v --without-headers

echo "Compiling $binutils"
make $MAKE_ARGS
make install


# Download and compile GCC
cd $BUILD_DIR
echo "Downloading $GCC..."
wget https://ftp.gnu.org/gnu/gcc/$GCC/$GCC.tar.gz
tar xf $GCC.tar.gz

# Download libgmp, libmpc and libmpfr
cd $GCC
./contrib/download_prerequisites
cd $BUILD_DIR
# -----------------------------------

mkdir build-gcc && cd build-gcc

# Apparently the whole --with-gnu-as, --with-as, --with-gnu-ld and --with-ld business is pretty much mandatory:
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38693
# (I can confirm out of first hand experience, that it doesn't work without these arguments)
../$GCC/configure --host=$HOST --prefix=$PREFIX --target=$TARGET --disable-nls --with-sysroot=$SYSROOT --enable-languages=c,c++ --with-gnu-as --with-as=$PREFIX/bin/$TARGET-as --with-gnu-ld --with-ld=$PREFIX/bin/$TARGET-ld --without-headers

echo "Compiling gcc"
make $MAKE_ARGS all-gcc
make install-gcc
echo "Compiling libgcc"
make $MAKE_ARGS all-target-libgcc
make install-target-libgcc

echo "Finished."
cd $PREFIX
echo "Cross-compiler installed at $PREFIX/bin/$TARGET-gcc"