Merge pull request #254888 from emilytrau/minimal-musl-1.2

minimal-bootstrap.musl: init at 1.2.4

pkgs/os-specific/linux/minimal-bootstrap/default.nix

@@ -144,6 +144,11 @@ lib.makeScope
     mes = lib.recurseIntoAttrs (callPackage ./mes { });
     mes-libc = callPackage ./mes/libc.nix { };
 
+    musl = callPackage ./musl {
+      gcc = gcc46;
+      gawk = gawk-mes;
+    };
+
     stage0-posix = callPackage ./stage0-posix { };
 
     inherit (self.stage0-posix) kaem m2libc mescc-tools mescc-tools-extra;
@@ -180,6 +185,7 @@ lib.makeScope
       echo ${gzip.tests.get-version}
       echo ${heirloom.tests.get-version}
       echo ${mes.compiler.tests.get-version}
+      echo ${musl.tests.hello-world}
       echo ${tinycc-mes.compiler.tests.chain}
       echo ${xz.tests.get-version}
       mkdir ''${out}

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

@@ -0,0 +1,87 @@
+{ lib
+, buildPlatform
+, hostPlatform
+, fetchurl
+, bash
+, gcc
+, binutils
+, gnumake
+, gnugrep
+, gnused
+, gawk
+, gnutar
+, gzip
+}:
+let
+  pname = "musl";
+  version = "1.2.4";
+
+  src = fetchurl {
+    url = "https://musl.libc.org/releases/musl-${version}.tar.gz";
+    hash = "sha256-ejXq4z1TcqfA2hGI3nmHJvaIJVE7euPr6XqqpSEU8Dk=";
+  };
+in
+bash.runCommand "${pname}-${version}" {
+  inherit pname version;
+
+  nativeBuildInputs = [
+    gcc
+    binutils
+    gnumake
+    gnused
+    gnugrep
+    gawk
+    gnutar
+    gzip
+  ];
+
+  passthru.tests.hello-world = result:
+    bash.runCommand "${pname}-simple-program-${version}" {
+        nativeBuildInputs = [ gcc binutils ];
+      } ''
+        cat <<EOF >> test.c
+        #include <stdio.h>
+        int main() {
+          printf("Hello World!\n");
+          return 0;
+        }
+        EOF
+        gcc -static -B${result}/lib -I${result}/include -o test test.c
+        ./test
+        mkdir $out
+      '';
+
+  meta = with lib; {
+    description = "An efficient, small, quality libc implementation";
+    homepage = "https://musl.libc.org";
+    license = licenses.mit;
+    maintainers = teams.minimal-bootstrap.members;
+    platforms = platforms.unix;
+  };
+} ''
+  # 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}
+
+  # Build
+  make
+
+  # Install
+  make install
+''