#!/usr/bin/env bash

set -euo pipefail

EMERALD_SCRIPT_DIR=$(dirname "$(realpath "$0")")

GCC_VER=12.1.0
GCC_SHA256=62fd634889f31c02b64af2c468f064b47ad1ca78411c45abe6ac4b5f8dd19c7b

EMERALD_BUILD_DIR="$EMERALD_SCRIPT_DIR"/build
EMERALD_DL_DIR="$EMERALD_SCRIPT_DIR"/dl
source "$EMERALD_SCRIPT_DIR"/common.sh

# Make sure build and dl directory exists
mkdir -vp "$EMERALD_BUILD_DIR" "$EMERALD_DL_DIR"

# Getting source
download https://ftp.gnu.org/gnu/gcc/gcc-"$GCC_VER"/gcc-"$GCC_VER".tar.xz "$EMERALD_DL_DIR"/gcc-"$GCC_VER".tar.xz "$GCC_SHA256"

if [ ! -d "$EMERALD_BUILD_DIR"/gcc-"$GCC_VER" ]; then
	tar --directory="$EMERALD_BUILD_DIR" -xJf "$EMERALD_DL_DIR"/gcc-"$GCC_VER".tar.xz
fi

cd "$EMERALD_BUILD_DIR"/gcc-"$GCC_VER"

# Apply patches
find "$EMERALD_SCRIPT_DIR"/patches/gcc/"$GCC_VER" -type f -name '*.patch' -exec patch -p0 -i {} \;

./contrib/download_prerequisites

# Its suggested to run configure from a seperate directory
mkdir -vp build && cd "$_"

# Configuration
../configure --target="$TARGET" --prefix="$PREFIX" \
	--enable-plugins --without-headers \
	--with-gnu-as --with-gnu-ld \
	--enable-languages=c,c++,fortran --with-pkgversion='Emerald' \
	--enable-default-pie --enable-gnu-indirect-function \
	--disable-libsanitizer --disable-nls \
	--enable-threads=posix --enable-__cxa_atexit \
	--enable-clocale=gnu --disable-libstdcxx-pch \
	--with-bugurl='https://tildegit.org/PeroSar/emerald-gcc/issues'

# Building
make -j4
export PATH="$PREFIX/bin:$PATH"
make install-strip -j1