68c1d5d2bd
A set of wrapper executables that launch native cross compilers inside foreign chroots. Speeds up cross compilation a lot, compared to the distcc-sshd method.
60 lines
1.9 KiB
Text
60 lines
1.9 KiB
Text
# 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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#
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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 (llvm, fakeroot, rpath).
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pkgname=crossdirect
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pkgver=1
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pkgrel=0
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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=""
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source="crossdirect.c"
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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 $_arch)"
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$CC -o "crossdirect-$_arch" -static -DHOSTSPEC="\"$_hostspec\"" \
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crossdirect.c
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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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# Iterate over architectures
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for _arch in $_archs; do
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[ "$_arch" == "$CARCH" ] && continue
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# Put arch-specific crossdirect wrapper in arch-specific bin folder
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_bindir="$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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# 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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done
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}
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sha512sums="12801031928103bd898a0d54a5c68b33da9bded10a3d145fdf5ce8b70eb0bbbcdd50764279004b6997d85d710fa581dc8b05aa5e0eb62d50c1054cc6d66db87f crossdirect.c"
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