depot/third_party/nixpkgs/pkgs/os-specific/linux/minimal-bootstrap/musl/default.nix

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{ lib
, buildPlatform
, hostPlatform
, fetchurl
, bash
, gcc
, binutils
, gnumake
, gnugrep
, gnused
, gnutar
, gzip
}:
let
inherit (import ./common.nix { inherit lib; }) pname meta;
version = "1.2.4";
src = fetchurl {
url = "https://musl.libc.org/releases/musl-${version}.tar.gz";
hash = "sha256-ejXq4z1TcqfA2hGI3nmHJvaIJVE7euPr6XqqpSEU8Dk=";
};
in
bash.runCommand "${pname}-${version}" {
inherit pname version meta;
nativeBuildInputs = [
gcc
binutils
gnumake
gnused
gnugrep
gnutar
gzip
];
passthru.tests.hello-world = result:
bash.runCommand "${pname}-simple-program-${version}" {
nativeBuildInputs = [ gcc binutils result ];
} ''
cat <<EOF >> test.c
#include <stdio.h>
int main() {
printf("Hello World!\n");
return 0;
}
EOF
musl-gcc -o test test.c
./test
mkdir $out
'';
} ''
# Unpack
tar xzf ${src}
cd musl-${version}
# Patch
# https://github.com/ZilchOS/bootstrap-from-tcc/blob/2e0c68c36b3437386f786d619bc9a16177f2e149/using-nix/2a3-intermediate-musl.nix
sed -i 's|/bin/sh|${bash}/bin/bash|' \
tools/*.sh
# patch popen/system to search in PATH instead of hardcoding /bin/sh
sed -i 's|posix_spawn(&pid, "/bin/sh",|posix_spawnp(\&pid, "sh",|' \
src/stdio/popen.c src/process/system.c
sed -i 's|execl("/bin/sh", "sh", "-c",|execlp("sh", "-c",|'\
src/misc/wordexp.c
# Configure
bash ./configure \
--prefix=$out \
--build=${buildPlatform.config} \
--host=${hostPlatform.config} \
--syslibdir=$out/lib \
--enable-wrapper
# Build
make -j $NIX_BUILD_CORES
# Install
make -j $NIX_BUILD_CORES install
sed -i 's|/bin/sh|${bash}/bin/bash|' $out/bin/*
ln -s ../lib/libc.so $out/bin/ldd
''