a5ec53f157
Make it easier to wrap one's head around the code and make the license explicit. It was implicit already by the LICENSE file of this repository.
83 lines
2.8 KiB
Plaintext
83 lines
2.8 KiB
Plaintext
# Wrapper for the "crossdirect" compilation method.
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# pmbootstrap mounts the native chroot in the foreign arch (e.g. armhf) chroot
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# as /native. This package gets installed into the native chroot, and creates
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# wrappers like:
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#
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# /native/usr/lib/crossdirect/armhf/gcc
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# -> /native/usr/bin/armv6-alpine-linux-muslgnueabihf-gcc
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# /native/usr/lib/crossdirect/armhf/rustc
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# -> /native/usr/bin/rustc --target=armv6-alpine-linux-musleabihf ...
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#
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# When building packages in the armhf chroot, PATH will get prepended with
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# "/native/usr/lib/crossdirect/armhf". The end game is of course invoking the
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# cross compiler from the native chroot, running at native speed, whenever
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# calling the compiler from the foreign arch chroot. See crossdirect.c for
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# implementation details of the C version (llvm, fakeroot, rpath). The rust
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# version is implemented as simple shell wrappers.
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pkgname=crossdirect
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pkgver=4
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pkgrel=2
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pkgdesc="Wrappers to launch native cross compilers in foreign chroots"
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url="https://postmarketOS.org"
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arch="all"
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license="MIT"
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options="!check"
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source="crossdirect.c rustc.sh rust-qemu-linker.sh"
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build() {
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cd "$srcdir"
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# Architectures and binaries
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_archs="x86_64 armhf armv7 aarch64"
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for _arch in $_archs; do
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[ "$_arch" == "$CARCH" ] && continue
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_hostspec="$(arch_to_hostspec $_arch)"
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# Build with -Werror, because we maintain this short program. (If
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# upstream is elsewhere, having -Werror is usually not desired.)
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$CC -o "crossdirect-$_arch" \
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-static \
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-Werror \
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-DHOSTSPEC="\"$_hostspec\"" \
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crossdirect.c
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# rustc
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sed "s/@ARCH@/$_arch/g" rustc.sh >rustc-"$_arch"
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done
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}
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package() {
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# Architectures and binaries
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_archs="x86_64 armhf armv7 aarch64"
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_bins="c++ cc cpp g++ gcc clang clang++"
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# Rust: qemu-linker
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install -Dm755 "$srcdir/rust-qemu-linker.sh" \
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"$pkgdir/usr/lib/crossdirect/rust-qemu-linker"
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# Iterate over architectures
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for _arch in $_archs; do
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[ "$_arch" == "$CARCH" ] && continue
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# GCC: put arch-specific crossdirect wrapper in arch-specific
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# bin folder
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_bindir="$pkgdir/usr/lib/crossdirect/$_arch"
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_hostspec="$(arch_to_hostspec $_arch)"
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mkdir -p "$_bindir"
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cd "$_bindir"
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cp "$srcdir/crossdirect-$_arch" "./"
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# GCC: create compiler symlinks
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for _bin in $_bins; do
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ln -s "crossdirect-$_arch" "$_bin"
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ln -s "crossdirect-$_arch" "$_hostspec-$_bin"
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done
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# Rust: arch-specific rustc wrapper
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install -Dm755 "$srcdir/rustc-$_arch" "$_bindir/rustc"
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done
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}
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sha512sums="53d2910a9079e1b8a7fef2992eb98ef9e1a70054fa9eb8a00e1c2f2d0b5b0de6fe8f2b8e8f7806396f76b0e97ccbf9169b36215b20f60792c6758f936681730a crossdirect.c
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6be16ba88720e628a3ecc8fa53f8e7a21d2af268b0509745d989139874d6b94b640bfcff09575eaa19073810be6ef91169c1f83e94f5cf8e6819f2670d9408de rustc.sh
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ea9bf8db3810d03d0a7395057f3d6e57f7127d87c55deaedc171c255288f5f3cc6fbcc680a5a1b92786cf573875d5dc22521173799fe2639acc97d0715ff905b rust-qemu-linker.sh"
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