#! /bin/bash

# gcompat 
# Source: https://distfiles.AdelieLinux.org/source/gcompat/gcompat-1.0.0.tar.xz 
#
# $BUILD = Directory to temporarily install
# $PKGS  = Directory to store built packages
#
# DEPS
# Required:     libucontext
# Recommended:  NONE
# Optional:     NONE

case $(uname -m) in
	x86_64*) export GLIBC="ld-linux-x86-64.so."
		 export MUSL="ld-musl-x86_64.so.1"
		;;
	i686*)   export GLIBC="ld-linux.so.2"
		 export MUSL="ld-musl-x86.so.1"
		;;
	aarch64*) export GLIBC="ld-linux-aarch64.so.1"
		  export MUSL="ld-musl-aarch64.so.1"
		;;
	armv7*)  export GLIBC="ld-linux-armhf.so.3"
		 export MUSL="ld-musl-armhf.so.1"
		;;
	armv6*)  export GLIBC="ld-linux-armhf.so.3"
		 export MUSL="ld-musl-armhf.so.1"
		;;
esac &&

patch -Np1 -i ../patches/gcompat-mlfs/no-static-pie.patch &&

make LINKER_PATH=/usr/lib/${MUSL} \
     LOADER_NAME=${GLIBC}         \
     LIBGCOMPAT_PATH=/usr/lib/libgcompat.so.0 \
     WITH_OBSTACK=musl-obstack \
     WITH_LIBUCONTEXT=1  &&

sudo -S make LINKER_PATH=/usr/lib/${MUSL} \
             LOADER_NAME=${GLIBC}         \
	     LIBGCOMPAT_PATH=/usr/lib/libgcompat.so.0 \
	     WITH_OBSTACK=musl-obstack \
	     WITH_LIBUCONTEXT=1 \
	     DESTDIR=${BUILD} &&

cd $BUILD && sudo -S mkdir -v ${BUILD}/install &&
cat > /tmp/slack-desc << "EOF"
# HOW TO EDIT THIS FILE:
# The "handy ruler" below makes it easier to edit a package description.  Line
# up the first '|' above the ':' following the base package name, and the '|'
# on the right side marks the last column you can put a character in.  You must
# make exactly 11 lines for the formatting to be correct.  It's also
# customary to leave one space after the ':' except on otherwise blank lines.

       |-----handy-ruler------------------------------------------------------|
gcompat: gcompat
gcompat:
gcompat: Compatibility layer to allow running glibc binaries on musl
gcompat: systems.
gcompat:
gcompat: homepage="https://code.foxkit.us/adelie/gcompat"
gcompat:
gcompat:
gcompat:
gcompat:
EOF
sudo -S mv -v /tmp/slack-desc install/ &&
sudo -S makepkg -l y -c n $PKGS/gcompat-1.0.0-$(uname -m)-mlfs.txz &&
sudo -S rm -rf ${BUILD}/*