#!/bin/bash

#
#  Singe 3
#  Copyright (C) 2006-2026 Scott Duensing <scott@kangaroopunch.com>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public Licens
# as published by the Free Software Foundation; either version 3
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
#

# Builds Singe and every vendored library for one platform, or all of them.  The work is done
# by the CMake superbuild (cmake/Superbuild.cmake, one preset per platform in
# CMakePresets.json); this script installs the host packages and calls it:
#
#     ./build-all.sh              every supported platform
#     ./build-all.sh linux x86_64 one platform
#
# Anything cmake --build accepts can follow the platform, so a single library can be redone:
#
#     ./build-all.sh linux x86_64 --target rebuild-ffmpeg

G_BUILDDIR=.builddir


function buildAll() {
	local OS=$1
	local ARCH=$2
	shift 2

	# Linux builds with the host compiler and Windows with the zig the build fetches itself.  The Pi
	# and macOS presets still lean on the toolchains repository beside this one until they move to
	# zig as well (PLAN.md section 17).
	if [[ "${OS}" == "pi" || "${OS}" == "macos" ]]; then
		if [[ ! -x ../toolchains/toolchains.sh ]]; then
			echo "error: ${OS} still needs ../toolchains/toolchains.sh" >&2
			exit 1
		fi
		source <(../toolchains/toolchains.sh use ${ARCH} ${OS})
		if [[ "${OS}" == "pi" ]]; then
			sudo chroot ${SYSROOT} apt-get -y install libasound-dev libxi-dev libvdpau-dev libdrm-dev
		fi
	fi

	cmake --preset ${OS}-${ARCH}
	cmake --build --preset ${OS}-${ARCH} "$@"
}


# -e = stop script on errors
# -u = stop script on undefined variable
# -o pipefail = stop pipeline if any step fails
set -euo pipefail

mkdir -p ${G_BUILDDIR}


# Host packages the build needs on a Debian based system (the same list is in INSTALL).
sudo apt-get install -y \
	build-essential \
	cmake \
	pkg-config \
	perl \
	nasm \
	imagemagick \
	lua5.4 \
	ffmpeg \
	asciidoctor \
	ruby-asciidoctor-pdf \
	autoconf \
	automake \
	libtool \
	libasound-dev \
	libxi-dev \
	libvdpau-dev \
	libva-dev \
	libdrm-dev \
	libgl-dev \
	libx11-dev


if [[ $# -ge 2 ]]; then
	buildAll "$@" 2>&1 | tee ${G_BUILDDIR}/$1-$2.log
else
	buildAll linux   x86_64  2>&1 | tee ${G_BUILDDIR}/linux-x86_64.log
	buildAll macos   aarch64 2>&1 | tee ${G_BUILDDIR}/macos-aarch64.log
	buildAll pi      aarch64 2>&1 | tee ${G_BUILDDIR}/pi-aarch64.log
	buildAll windows x86_64  2>&1 | tee ${G_BUILDDIR}/windows-x86_64.log
fi