common/build-style: add void-cross

this introduces a new build-style void-cross, which can be used
to write system crosstoolchain templates; this is to reduce the
amount of maintenance, resolve existing problems with the cross
toolchain templates and remove repeated code

3 files changed, 614 insertions, 0 deletions

diff --git a/Manual.md b/Manual.md
index 6481bb4ee50..4f954b840be 100644
--- a/Manual.md
+++ b/Manual.md
@@ -961,6 +961,16 @@ via `make_install_target`.
 via `configure_args`, the meson command can be overridden by `meson_cmd` and the location of
 the out of source build by `meson_builddir`
 
+- `void-cross` For cross-toolchain packages used to build Void systems. You will need to
+specify `cross_triplet` (corresponds to the target triplet specified in the cross profile
+for the target arch), `cross_linux_arch` (the architecture name in the Linux kernel source)
+and when building Go support for musl targets, also `cross_libucontext_arch` (see `libucontext`
+for available ones). Optionally, `cross_gcc_skip_go` can be specified. Individual subproject
+configure arguments can be specified via `cross_*_configure_args` where `*` is `binutils`,
+`gcc_bootstrap` (early gcc), `gcc` (final gcc), `glibc` (or `musl`), `configure_args` is
+additionally passed to both early and final `gcc`. You can also specify custom `CFLAGS`
+and `LDFLAGS` for the libc as `cross_(glibc|musl)_(cflags|ldflags)`.
+
 For packages that use the Python module build method (`setup.py` or
 [PEP 517](https://www.python.org/dev/peps/pep-0517/)), you can choose one of the following:
 
diff --git a/common/build-style/void-cross.sh b/common/build-style/void-cross.sh
new file mode 100644
index 00000000000..0e5c2336357
--- /dev/null
+++ b/common/build-style/void-cross.sh
@@ -0,0 +1,591 @@
+#
+# This helper is for void system crosstoolchain templates.
+#
+# Mandatory variables:
+#
+# - cross_triplet - the target triplet (e.g. aarch64-linux-gnu)
+# - cross_linux_arch - the source ARCH of the kernel (e.g. arm64)
+# - cross_libucontext_arch - only on musl without cross_gcc_skip_go
+#
+# Optional variables:
+#
+# - cross_gcc_skip_go - do not build gccgo support
+# - cross_binutils_configure_args
+# - cross_gcc_bootstrap_configure_args
+# - cross_gcc_configure_args
+# - cross_glibc_cflags
+# - cross_glibc_ldflags
+# - cross_glibc_configure_args
+# - cross_musl_cflags
+# - cross_musl_ldflags
+# - cross_musl_configure_args
+#
+# configure_args is passed to both bootstrap gcc and final gcc
+# if you need to pass some to one and not the other, use the
+# respective cross_ variables for final gcc and bootstrap gcc
+#
+
+_void_cross_apply_patch() {
+	local args="$1" pname="$(basename $2)"
+	if [ ! -f ".${pname}_done" ]; then
+		patch -N $args -i $2
+		touch .${pname}_done
+	fi
+}
+
+_void_cross_build_binutils() {
+	[ -f ${wrksrc}/.binutils_done ] && return 0
+
+	local ver=$1
+
+	msg_normal "Building binutils for ${cross_triplet}\n"
+
+	mkdir -p ${wrksrc}/binutils_build
+	cd ${wrksrc}/binutils_build
+
+	../binutils-${ver}/configure \
+		--prefix=/usr \
+		--sbindir=/usr/bin \
+		--libdir=/usr/lib \
+		--libexecdir=/usr/lib \
+		--target=${cross_triplet} \
+		--with-sysroot=/usr/${cross_triplet} \
+		--disable-nls \
+		--disable-shared \
+		--disable-multilib \
+		--disable-werror \
+		--disable-gold \
+		--with-system-zlib \
+		--enable-deterministic-archives \
+		--enable-default-hash-style=gnu \
+		${cross_binutils_configure_args}
+
+	make configure-host
+	make ${makejobs}
+
+	make install DESTDIR=${wrksrc}/build_root
+
+	touch ${wrksrc}/.binutils_done
+}
+
+_void_cross_build_bootstrap_gcc() {
+	[ -f ${wrksrc}/.gcc_bootstrap_done ] && return 0
+
+	local ver=$1
+
+	msg_normal "Patching GCC for ${cross_triplet}\n"
+
+	cd ${wrksrc}/gcc-${ver}
+	for f in ${XBPS_SRCPKGDIR}/gcc/patches/*.patch; do
+		_void_cross_apply_patch -p0 "$f"
+	done
+	if [ -f ${wrksrc}/.musl_version ]; then
+		for f in ${XBPS_SRCPKGDIR}/gcc/files/*-musl.patch; do
+			_void_cross_apply_patch -p0 "$f"
+		done
+	fi
+	cd ..
+
+	msg_normal "Building bootstrap GCC for ${cross_triplet}\n"
+
+	mkdir -p gcc_bootstrap
+	cd gcc_bootstrap
+
+	local extra_args
+	if [ -f ${wrksrc}/.musl_version ]; then
+		extra_args+=" --with-newlib"
+		extra_args+=" --disable-symvers"
+		extra_args+=" libat_cv_have_ifunc=no"
+	else
+		extra_args+=" --without-headers"
+	fi
+
+	../gcc-${ver}/configure \
+		--prefix=/usr \
+		--sbindir=/usr/bin \
+		--libdir=/usr/lib \
+		--libexecdir=/usr/lib \
+		--target=${cross_triplet} \
+		--disable-nls \
+		--disable-multilib \
+		--disable-shared \
+		--disable-libquadmath \
+		--disable-decimal-float \
+		--disable-libgomp \
+		--disable-libmpx \
+		--disable-libmudflap \
+		--disable-libssp \
+		--disable-libitm \
+		--disable-libatomic \
+		--disable-threads \
+		--disable-sjlj-exceptions \
+		--enable-languages=c \
+		--with-gnu-ld \
+		--with-gnu-as \
+		${extra_args} \
+		${configure_args} \
+		${cross_gcc_bootstrap_configure_args}
+
+	make ${makejobs}
+	make install DESTDIR=${wrksrc}/build_root
+
+	local ptrs=$(${cross_triplet}-gcc -dM -E - < /dev/null | \
+		grep __SIZEOF_POINTER__)
+	local ws=${ptrs##* }
+
+	case ${ws} in
+		8) echo 64 > ${wrksrc}/.gcc_wordsize ;;
+		4) echo 32 > ${wrksrc}/.gcc_wordsize ;;
+		*) msg_error "Unknown word size: ${ws}\n" ;;
+	esac
+
+	touch ${wrksrc}/.gcc_bootstrap_done
+}
+
+_void_cross_build_kernel_headers() {
+	[ -f ${wrksrc}/.linux_headers_done ] && return 0
+
+	local ver=$1
+
+	msg_normal "Patching Linux headers for ${cross_triplet}\n"
+
+	cd ${wrksrc}/linux-${ver}
+	for f in ${XBPS_SRCPKGDIR}/kernel-libc-headers/patches/*.patch; do
+		_void_cross_apply_patch -p0 $f
+	done
+	cd ..
+
+	msg_normal "Building Linux headers for ${cross_triplet}\n"
+
+	cd linux-${ver}
+
+	make ARCH=$cross_linux_arch headers_check
+	make ARCH=$cross_linux_arch \
+		INSTALL_HDR_PATH=${wrksrc}/build_root/usr/${cross_triplet}/usr \
+		headers_install
+
+	touch ${wrksrc}/.linux_headers_done
+}
+
+_void_cross_build_glibc_headers() {
+	[ -f ${wrksrc}/.glibc_headers_done ] && return 0
+
+	local ver=$1
+	local tgt=$cross_triplet
+
+	msg_normal "Patching glibc for ${cross_triplet}\n"
+
+	cd ${wrksrc}/glibc-${ver}
+	if [ -d "${XBPS_SRCPKGDIR}/glibc/patches" ]; then
+		for f in ${XBPS_SRCPKGDIR}/glibc/patches/*.patch; do
+			_void_cross_apply_patch -p1 "$f"
+		done
+	fi
+	cd ..
+
+	msg_normal "Building glibc headers for ${cross_triplet}\n"
+
+	mkdir -p glibc_headers
+	cd glibc_headers
+
+	echo "libc_cv_forced_unwind=yes" > config.cache
+	echo "libc_cv_c_cleanup=yes" >> config.cache
+
+	# we don't need any custom args here, it's just headers
+	CC="${tgt}-gcc" CXX="${tgt}-g++" CPP="${tgt}-cpp" LD="${tgt}-ld" \
+	AS="${tgt}-as" NM="${tgt}-nm" CFLAGS="-pipe" CXXFLAGS="" CPPFLAGS="" \
+	LDFLAGS="" \
+	../glibc-${ver}/configure \
+		--prefix=/usr \
+		--host=${tgt} \
+		--with-headers=${wrksrc}/build_root/usr/${tgt}/usr/include \
+		--config-cache \
+		--enable-obsolete-rpc \
+		--enable-obsolete-nsl \
+		--enable-kernel=2.6.27 \
+		${cross_glibc_configure_args}
+
+	make -k install-headers cross_compiling=yes \
+		install_root=${wrksrc}/build_root/usr/${tgt}
+
+	touch ${wrksrc}/.glibc_headers_done
+}
+
+_void_cross_build_glibc() {
+	[ -f ${wrksrc}/.glibc_build_done ] && return 0
+
+	local ver=$1
+	local tgt=$cross_triplet
+
+	msg_normal "Building glibc for ${tgt}\n"
+
+	mkdir -p ${wrksrc}/glibc_build
+	cd ${wrksrc}/glibc_build
+
+	local ws=$(cat ${wrksrc}/.gcc_wordsize)
+
+	echo "slibdir=/usr/lib${ws}" > configparms
+
+	echo "libc_cv_forced_unwind=yes" > config.cache
+	echo "libc_cv_c_cleanup=yes" >> config.cache
+
+	CC="${tgt}-gcc" CXX="${tgt}-g++" CPP="${tgt}-cpp" LD="${tgt}-ld" \
+	AR="${tgt}-ar" AS="${tgt}-as" NM="${tgt}-nm" \
+	CFLAGS="-pipe ${cross_glibc_cflags}" \
+	CXXFLAGS="-pipe ${cross_glibc_cflags}" \
+	CPPFLAGS="${cross_glibc_cflags}" \
+	LDFLAGS="${cross_glibc_ldflags}" \
+	../glibc-${ver}/configure \
+		--prefix=/usr \
+		--libdir=/usr/lib${ws} \
+		--libexecdir=/usr/libexec \
+		--host=${tgt} \
+		--with-headers=${wrksrc}/build_root/usr/${tgt}/usr/include \
+		--config-cache \
+		--enable-obsolete-rpc \
+		--enable-obsolete-nsl \
+		--disable-profile \
+		--disable-werror \
+		--enable-kernel=2.6.27 \
+		${cross_glibc_configure_args}
+
+	make ${makejobs}
+	make install_root=${wrksrc}/build_root/usr/${tgt} install
+
+	touch ${wrksrc}/.glibc_build_done
+}
+
+_void_cross_build_musl() {
+	[ -f ${wrksrc}/.musl_build_done ] && return 0
+
+	local ver=$1
+	local tgt=$cross_triplet
+
+	msg_normal "Patching musl for ${tgt}\n"
+
+	cd ${wrksrc}/musl-${ver}
+	if [ -d "${XBPS_SRCPKGDIR}/musl/patches" ]; then
+		for f in ${XBPS_SRCPKGDIR}/musl/patches/*.patch; do
+			_void_cross_apply_patch -p0 "$f"
+		done
+	fi
+	cd ..
+
+	msg_normal "Building musl for ${tgt}\n"
+
+	mkdir -p musl_build
+	cd musl_build
+
+	CC="${tgt}-gcc" CXX="${tgt}-g++" CPP="${tgt}-cpp" LD="${tgt}-ld" \
+	AR="${tgt}-ar" AS="${tgt}-as" NM="${tgt}-nm" \
+	CFLAGS="-pipe -fPIC ${cross_musl_cflags}" \
+	CPPFLAGS="${cross_musl_cflags}" LDFLAGS="${cross_musl_ldflags}" \
+	../musl-${ver}/configure \
+		--prefix=/usr \
+		--host=${tgt} \
+		${cross_musl_configure_args}
+
+	make ${makejobs}
+	make DESTDIR=${wrksrc}/build_root/usr/${tgt} install
+
+	touch ${wrksrc}/.musl_build_done
+}
+
+_void_cross_build_libucontext() {
+	[ -n "$cross_gcc_skip_go" ] && return 0
+	[ -f ${wrksrc}/.libucontext_build_done ] && return 0
+
+	local ver=$1
+
+	msg_normal "Building libucontext for ${cross_triplet}\n"
+
+	cd ${wrksrc}/libucontext-${ver}
+	# a terrible hack but seems to work for now
+	CC="${cross_triplet}-gcc" AS="${cross_triplet}-as" AR="${cross_triplet}-ar" \
+	CPPFLAGS="-pipe ${cross_musl_cflags} -g0 -Os -nostdinc -isystem ${wrksrc}/build_root/usr/${cross_triplet}/usr/include" \
+	make ARCH=${cross_libucontext_arch} libucontext.a
+
+	cp libucontext.a ${wrksrc}/build_root/usr/${cross_triplet}/usr/lib
+
+	touch ${wrksrc}/.libucontext_build_done
+}
+
+_void_cross_build_gcc() {
+	[ -f ${wrksrc}/.gcc_build_done ] && return 0
+
+	local ver=$1
+
+	msg_normal "Building gcc for ${cross_triplet}\n"
+
+	mkdir -p ${wrksrc}/gcc_build
+	cd ${wrksrc}/gcc_build
+
+	local langs="c,c++,fortran,objc,obj-c++,ada,lto"
+	if [ -z "$cross_gcc_skip_go" ]; then
+		langs+=",go"
+	fi
+
+	local extra_args
+	if [ -f ${wrksrc}/.musl_version ]; then
+		extra_args+=" --enable-libssp"
+		# otherwise glibc hosts get confused and use the gnu impl
+		extra_args+=" --enable-clocale=generic"
+		extra_args+=" --disable-symvers"
+		extra_args+=" --disable-gnu-unique-object"
+		extra_args+=" libat_cv_have_ifunc=no"
+	else
+		extra_args+=" --disable-libssp"
+		extra_args+=" --enable-gnu-unique-object"
+	fi
+
+	# note on --disable-libquadmath:
+	# on some platforms the library is actually necessary for the
+	# fortran frontend to build, but still disable it because it
+	# should not be in the resulting packages; it conflicts with
+	# the libquadmath you can install into the cross root
+	#
+	# platforms where this is a problem should explicitly force
+	# libquadmath to be on via cross_gcc_configure_args, the
+	# do_install in this build-style automatically removes it
+	#
+	../gcc-${ver}/configure \
+		--prefix=/usr \
+		--sbindir=/usr/bin \
+		--libdir=/usr/lib \
+		--libexecdir=/usr/lib \
+		--target=${cross_triplet} \
+		--with-sysroot=/usr/${cross_triplet} \
+		--with-build-sysroot=${wrksrc}/build_root/usr/${cross_triplet} \
+		--enable-languages=${langs} \
+		--disable-nls \
+		--disable-multilib \
+		--disable-sjlj-exceptions \
+		--disable-libquadmath \
+		--disable-libmudflap \
+		--disable-libitm \
+		--disable-libvtv \
+		--disable-libsanitizer \
+		--disable-libstdcxx-pch \
+		--enable-shared \
+		--enable-threads=posix \
+		--enable-__cxa_atexit \
+		--enable-linker-build-id \
+		--enable-libada \
+		--enable-lto \
+		--enable-default-pie \
+		--enable-default-ssp \
+		--with-gnu-ld \
+		--with-gnu-as \
+		--with-linker-hash-style=gnu \
+		${extra_args} \
+		${configure_args} \
+		${cross_gcc_configure_args}
+
+	make ${makejobs}
+
+	touch ${wrksrc}/.gcc_build_done
+}
+
+_void_cross_check_var() {
+	local var="cross_${1}"
+	if [ -z "${!var}" ]; then
+		msg_error "cross_${1} not defined in template"
+	fi
+}
+
+_void_cross_test_ver() {
+	local proj=$1
+	local noerr=$2
+	local ver cver
+	for p in ${proj}-*; do
+		cver=${p#${proj}-}
+		if [ -z "$noerr" -a -n "$ver" ]; then
+			msg_error "multiple versions of ${proj} found: ${ver}, ${cver}"
+		fi
+		ver=${cver}
+	done
+	if [ -d "${proj}-${ver}" ]; then
+		echo ${ver} > ${wrksrc}/.${proj}_version
+		return
+	fi
+	if [ -z "$noerr" ]; then
+		msg_error "project ${proj} not available for build\n"
+	fi
+}
+
+do_build() {
+	# Verify toolchain versions
+	cd ${wrksrc}
+
+	local binutils_ver linux_ver gcc_ver libc_ver libucontext_ver
+
+	_void_cross_test_ver binutils
+	_void_cross_test_ver linux
+	_void_cross_test_ver gcc
+
+	binutils_ver=$(cat .binutils_version)
+	linux_ver=$(cat .linux_version)
+	gcc_ver=$(cat .gcc_version)
+
+	_void_cross_test_ver musl noerr
+	if [ ! -f .musl_version ]; then
+		_void_cross_test_ver glibc
+		libc_ver=$(cat .glibc_version)
+	else
+		libc_ver=$(cat .musl_version)
+		if [ -z "$cross_gcc_skip_go" ]; then
+			_void_cross_test_ver libucontext
+			_void_cross_check_var libucontext_arch
+			libucontext_ver=$(cat .libucontext_version)
+		fi
+	fi
+
+	# Verify triplet
+	_void_cross_check_var triplet
+	_void_cross_check_var linux_arch
+
+	local sysroot="/usr/${cross_triplet}"
+
+	# Prepare environment
+	cd ${wrksrc}
+
+	# Core directories for the build root
+	mkdir -p build_root/usr/{bin,lib,include,share}
+	mkdir -p build_root/usr/${cross_triplet}/usr/{bin,lib,include,share}
+
+	# Host root uses host wordsize
+	ln -sf usr/lib build_root/lib
+	ln -sf usr/lib build_root/lib${XBPS_TARGET_WORDSIZE}
+	ln -sf lib build_root/usr/lib${XBPS_TARGET_WORDSIZE}
+
+	# Prepare target sysroot
+	ln -sf usr/lib build_root/${sysroot}/lib
+	ln -sf lib build_root/${sysroot}/usr/libexec
+
+	_void_cross_build_binutils ${binutils_ver}
+
+	# Prepare environment so we can use temporary prefix
+	local oldpath="$PATH"
+	local oldldlib="$LD_LIBRARY_PATH"
+
+	export PATH="${wrksrc}/build_root/usr/bin:$PATH"
+	export LD_LIBRARY_PATH="${wrksrc}/build_root/usr/lib:$PATH"
+
+	_void_cross_build_bootstrap_gcc ${gcc_ver}
+	_void_cross_build_kernel_headers ${linux_ver}
+
+	local ws=$(cat ${wrksrc}/.gcc_wordsize)
+
+	# Now that we know the target wordsize, prepare symlinks
+	ln -sf usr/lib ${wrksrc}/build_root/${sysroot}/lib${ws}
+	ln -sf lib ${wrksrc}/build_root/${sysroot}/usr/lib${ws}
+
+	if [ -f ${wrksrc}/.musl_version ]; then
+		_void_cross_build_musl ${libc_ver}
+		_void_cross_build_libucontext ${libucontext_ver}
+	else
+		_void_cross_build_glibc_headers ${libc_ver}
+		_void_cross_build_glibc ${libc_ver}
+	fi
+
+	_void_cross_build_gcc ${gcc_ver}
+
+	# restore this stuff in case later hooks depend on it
+	export PATH="$oldpath"
+	export LD_LIBRARY_PATH="$oldldlib"
+}
+
+do_install() {
+	# We need to be able to access binutils in the root
+	local oldpath="$PATH"
+	local oldldlib="$LD_LIBRARY_PATH"
+	export PATH="${wrksrc}/build_root/usr/bin:$PATH"
+	export LD_LIBRARY_PATH="${wrksrc}/build_root/usr/lib:$PATH"
+
+	local sysroot="/usr/${cross_triplet}"
+	local ws=$(cat ${wrksrc}/.gcc_wordsize)
+
+	# Core directories for the sysroot
+	#
+	# libexec is created for sysroot but not for dest, since in sysroot
+	# we configure glibc with separate libexec, elsewhere it's just lib
+	# and we want to delete the libexec from glibc afterwards to save space
+	mkdir -p ${DESTDIR}/${sysroot}/usr/{bin,lib,libexec,include,share}
+	# Sysroot base symlinks
+	ln -sf usr/lib ${DESTDIR}/${sysroot}/lib
+	ln -sf usr/lib ${DESTDIR}/${sysroot}/lib${ws}
+	ln -sf lib ${DESTDIR}/${sysroot}/usr/lib${ws}
+
+	# Install Linux headers
+	cd ${wrksrc}/linux-$(cat ${wrksrc}/.linux_version)
+	make ARCH=${cross_linux_arch} \
+		INSTALL_HDR_PATH=${DESTDIR}/${sysroot}/usr headers_install
+	rm -f $(find ${DESTDIR}/${sysroot}/usr/include \
+		-name .install -or -name ..install.cmd)
+	rm -rf ${DESTDIR}/${sysroot}/usr/include/drm
+
+	# Install binutils
+	cd ${wrksrc}/binutils_build
+	make install DESTDIR=${DESTDIR}
+
+	# Install final gcc
+	cd ${wrksrc}/gcc_build
+	make install DESTDIR=${DESTDIR}
+
+	# Move libcc1.so* to the sysroot
+	mv ${DESTDIR}/usr/lib/libcc1.so* ${DESTDIR}/${sysroot}/usr/lib
+
+	if [ -f ${wrksrc}/.musl_version ]; then
+		# Install musl
+		cd ${wrksrc}/musl_build
+		make DESTDIR=${DESTDIR}/${sysroot} install
+
+		# Remove useless headers
+		rm -rf ${DESTDIR}/usr/lib/gcc/${cross_triplet}/*/include-fixed
+
+		# Make ld-musl.so symlinks relative
+		for f in ${DESTDIR}/${sysroot}/usr/lib/ld-musl-*.so.*; do
+			ln -sf libc.so ${f}
+		done
+	else
+		# Install glibc
+		cd ${wrksrc}/glibc_build
+		make install_root=${DESTDIR}/${sysroot} install install-headers
+
+		# Remove bad header
+		rm -f ${DESTDIR}/usr/lib/gcc/${cross__triplet}/*/include-fixed/bits/statx.h
+	fi
+
+	local gcc_ver=$(cat ${wrksrc}/.gcc_version)
+
+	# Symlinks for gnarl and gnat shared libraries
+	local majorver=${gcc_ver%.*.*}
+	local adalib=usr/lib/gcc/${_triplet}/${gcc_ver}/adalib
+	mv ${DESTDIR}/${adalib}/libgnarl-${majorver}.so \
+		${DESTDIR}/${sysroot}/usr/lib
+	mv ${DESTDIR}/${adalib}/libgnat-${majorver}.so \
+		${DESTDIR}/${sysroot}/usr/lib
+	ln -sf libgnarl-${majorver}.so ${DESTDIR}/${sysroot}/usr/lib/libgnarl.so
+	ln -sf libgnat-${majorver}.so ${DESTDIR}/${sysroot}/usr/lib/libgnat.so
+	rm -vf ${DESTDIR}/${adalib}/libgna{rl,t}.so
+
+	# Remove unnecessary libatomic which is only built for gccgo
+	rm -rf ${DESTDIR}/${sysroot}/usr/lib/libatomic.*
+
+	# If libquadmath was forced (needed for gfortran on some platforms)
+	# then remove it because it conflicts with libquadmath package
+	rm -rf ${DESTDIR}/${sysroot}/usr/lib/libquadmath.*
+
+	# Remove leftover symlinks
+	rm -f ${DESTDIR}/usr/lib${XBPS_TARGET_WORDSIZE}
+	rm -f ${DESTDIR}/lib*
+	rm -f ${DESTDIR}/*bin
+	# Remove unnecessary stuff
+	rm -rf ${DESTDIR}/${sysroot}/{sbin,etc,var,libexec}
+	rm -rf ${DESTDIR}/${sysroot}/usr/{sbin,share,libexec}
+	rm -rf ${DESTDIR}/usr/share
+	rm -f ${DESTDIR}/usr/lib*/libiberty.a
+
+	export PATH="$oldpath"
+	export LD_LIBRARY_PATH="$oldldlib"
+}
diff --git a/common/environment/build-style/void-cross.sh b/common/environment/build-style/void-cross.sh
new file mode 100644
index 00000000000..08d1585e95c
--- /dev/null
+++ b/common/environment/build-style/void-cross.sh
@@ -0,0 +1,13 @@
+lib32disabled=yes
+nopie=yes
+create_wrksrc=yes
+
+nostrip_files+=" libcaf_single.a libgcc.a libgcov.a libgcc_eh.a
+ libgnarl_pic.a libgnarl.a libgnat_pic.a libgnat.a libgmem.a"
+
+# glibc crosstoolchains not available on musl hosts yet
+if [ -z "$archs" -a "${cross_triplet/-musl}" = "${cross_triplet}" ]; then
+	if [ "$XBPS_TARGET_LIBC" != "glibc" ]; then
+		archs="~*-musl"
+	fi
+fi