media-sound/fluidsynth: prevent faulty CMake C compiler detection

Manually pass CMAKE_C_COMPILER to subprocess, which relies on
insufficient CMake compiler auto-detection to detect a suitable CBUILD
C compiler.

Closes: https://bugs.gentoo.org/833979
Signed-off-by: Lucio Sauer <watermanpaint@posteo.net>
Closes: https://github.com/gentoo/gentoo/pull/34989
Signed-off-by: Miroslav Šulc <fordfrog@gentoo.org>

1 files changed, 149 insertions, 0 deletions

diff --git a/media-sound/fluidsynth/fluidsynth-2.3.4-r1.ebuild b/media-sound/fluidsynth/fluidsynth-2.3.4-r1.ebuild
new file mode 100644
index 000000000000..936c864a0e52
--- /dev/null
+++ b/media-sound/fluidsynth/fluidsynth-2.3.4-r1.ebuild
@@ -0,0 +1,149 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake-multilib multibuild systemd toolchain-funcs
+
+DESCRIPTION="Software real-time synthesizer based on the Soundfont 2 specifications"
+HOMEPAGE="https://www.fluidsynth.org"
+SRC_URI="https://github.com/FluidSynth/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="LGPL-2.1+"
+SLOT="0/3"
+KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ppc ppc64 ~riscv sparc x86"
+IUSE="alsa dbus debug doc ipv6 jack ladspa lash network oss pipewire portaudio pulseaudio +readline sdl +sndfile systemd threads"
+
+BDEPEND="
+	virtual/pkgconfig
+	doc? (
+		app-text/doxygen
+		dev-libs/libxslt
+	)
+"
+DEPEND="
+	dev-libs/glib:2[${MULTILIB_USEDEP}]
+	alsa? (
+		media-libs/alsa-lib[${MULTILIB_USEDEP}]
+		lash? ( media-sound/lash[${MULTILIB_USEDEP}] )
+	)
+	dbus? ( sys-apps/dbus[${MULTILIB_USEDEP}] )
+	jack? ( virtual/jack[${MULTILIB_USEDEP}] )
+	ladspa? (
+		media-libs/ladspa-sdk[${MULTILIB_USEDEP}]
+		media-plugins/cmt-plugins[${MULTILIB_USEDEP}]
+	)
+	pipewire? (
+		media-video/pipewire:0=[${MULTILIB_USEDEP}]
+	)
+	portaudio? ( media-libs/portaudio[${MULTILIB_USEDEP}] )
+	pulseaudio? ( media-libs/libpulse[${MULTILIB_USEDEP}] )
+	readline? ( sys-libs/readline:0=[${MULTILIB_USEDEP}] )
+	sdl? ( media-libs/libsdl2[${MULTILIB_USEDEP}] )
+	sndfile? ( media-libs/libsndfile[${MULTILIB_USEDEP}] )
+"
+RDEPEND="${DEPEND}"
+
+DOCS=( AUTHORS ChangeLog README.md THANKS TODO doc/fluidsynth-v20-devdoc.txt )
+
+src_prepare() {
+	# https://bugs.gentoo.org/833979#c17
+	sed -i "/CONFIGURE_COMMAND/{n;s/$/ -DCMAKE_C_COMPILER=$(tc-getBUILD_CC)/}" \
+		src/CMakeLists.txt || die
+	cmake_src_prepare
+}
+
+src_configure() {
+	local mycmakeargs=(
+		-Denable-alsa=$(usex alsa)
+		-Denable-aufile=ON
+		-Denable-dbus=$(usex dbus)
+		-Denable-dsound=OFF # Windows
+		-Denable-floats=OFF # loat instead of double for DSP samples
+		-Denable-fpe-check=$(usex debug)
+		-Denable-ipv6=$(usex ipv6)
+		-Denable-jack=$(usex jack)
+		-Denable-ladspa=$(usex ladspa)
+		-Denable-libinstpatch=OFF # https://github.com/swami/libinstpatch
+		-Denable-midishare=OFF # http://midishare.sourceforge.net/
+		-Denable-network=$(usex network)
+		-Denable-opensles=OFF
+		-Denable-oboe=OFF # requires OpenSLES and/or AAudio
+		-Denable-oss=$(usex oss)
+		-Denable-libsndfile=$(usex sndfile)
+		-Denable-portaudio=$(usex portaudio)
+		-Denable-profiling=$(usex debug)
+		-Denable-pulseaudio=$(usex pulseaudio)
+		-Denable-pipewire=$(usex pipewire)
+		-Denable-readline=$(usex readline)
+		-Denable-sdl2=$(usex sdl)
+		-Denable-systemd=$(usex systemd)
+		-Denable-threads=$(usex threads)
+		-Denable-trap-on-fpe=$(usex debug)
+		-Denable-ubsan=OFF # compile and link against UBSan (for debugging fluidsynth internals)
+		-Denable-waveout=OFF # Windows
+		-Denable-winmidi=OFF # Windows
+		$(cmake_use_find_package doc Doxygen)
+	)
+
+	if use alsa; then
+		mycmakeargs+=( -Denable-lash=$(usex lash) )
+	else
+		mycmakeargs+=( -Denable-lash=OFF )
+	fi
+
+	if use systemd; then
+		mycmakeargs+=( -DFLUID_DAEMON_ENV_FILE="/etc/fluidsynth.conf" )
+	fi
+
+	cmake-multilib_src_configure
+}
+
+compile_doxygen_doc() {
+	multilib_is_native_abi && cmake_build doxygen
+}
+
+src_compile() {
+	cmake-multilib_src_compile
+	use doc && multilib_foreach_abi compile_doxygen_doc
+}
+
+install_doxygen_doc() {
+	if multilib_is_native_abi; then
+		docinto .
+		dodoc -r "${BUILD_DIR}/doc/api/html"
+	fi
+}
+
+install_systemd_files() {
+	if multilib_is_native_abi; then
+		systemd_dounit "${BUILD_DIR}/fluidsynth.service"
+		insinto /etc
+		doins "${BUILD_DIR}/fluidsynth.conf"
+	fi
+}
+
+multilib_src_test() {
+	eninja check
+}
+
+src_install() {
+	cmake-multilib_src_install
+
+	docinto pdf
+	dodoc doc/*.pdf
+
+	docinto examples
+	dodoc doc/examples/*.c
+
+	if use doc; then
+		multilib_foreach_abi install_doxygen_doc
+	fi
+	if use systemd; then
+		multilib_foreach_abi install_systemd_files
+
+		elog "When using fluidsynth as a systemd service, make sure"
+		elog "to configure your fluidsynth settings globally in "
+		elog "/etc/fluidsynth.conf or per-user in ~/.config/fluidsynth"
+	fi
+}