From 1b82c5f564a0e07c87f28e8be9776e45723f58f5 Mon Sep 17 00:00:00 2001
From: Tristan Ross <tristan.ross@midstall.com>
Date: Mon, 14 Jul 2025 20:25:46 -0700
Subject: [PATCH] gccNGPackages_15.libgomp: init

---
 .../compilers/gcc/ng/common/default.nix       |  9 ++
 .../gcc/ng/common/libgomp/default.nix         | 87 +++++++++++++++++++
 2 files changed, 96 insertions(+)
 create mode 100644 pkgs/development/compilers/gcc/ng/common/libgomp/default.nix

diff --git a/pkgs/development/compilers/gcc/ng/common/default.nix b/pkgs/development/compilers/gcc/ng/common/default.nix
index ecb075894476..0e040fdb1320 100644
--- a/pkgs/development/compilers/gcc/ng/common/default.nix
+++ b/pkgs/development/compilers/gcc/ng/common/default.nix
@@ -130,6 +130,7 @@ makeScopeWithSplicing' {
           "-B${targetGccPackages.libgcc}/lib"
           "-B${targetGccPackages.libssp}/lib"
           "-B${targetGccPackages.libatomic}/lib"
+          "-B${targetGccPackages.libgomp}/lib"
           "-B${targetGccPackages.libgfortran}/lib/"
         ];
       };
@@ -145,6 +146,8 @@ makeScopeWithSplicing' {
           "-B${targetGccPackages.libgcc}/lib"
           "-B${targetGccPackages.libssp}/lib"
           "-B${targetGccPackages.libatomic}/lib"
+          "-B${targetGccPackages.libgomp}/lib"
+          "-I${targetGccPackages.libgomp}/lib/gcc/${metadata.release_version}/include"
         ];
       };
 
@@ -159,6 +162,8 @@ makeScopeWithSplicing' {
           "-B${targetGccPackages.libgcc}/lib"
           "-B${targetGccPackages.libssp}/lib"
           "-B${targetGccPackages.libatomic}/lib"
+          "-B${targetGccPackages.libgomp}/lib"
+          "-I${targetGccPackages.libgomp}/lib/gcc/${metadata.release_version}/include"
         ];
       };
 
@@ -231,5 +236,9 @@ makeScopeWithSplicing' {
       libstdcxx = callPackage ./libstdcxx {
         stdenv = overrideCC stdenv buildGccPackages.gccWithLibatomic;
       };
+
+      libgomp = callPackage ./libgomp {
+        stdenv = overrideCC stdenv buildGccPackages.gccWithLibatomic;
+      };
     };
 }
diff --git a/pkgs/development/compilers/gcc/ng/common/libgomp/default.nix b/pkgs/development/compilers/gcc/ng/common/libgomp/default.nix
new file mode 100644
index 000000000000..9053e88a80f9
--- /dev/null
+++ b/pkgs/development/compilers/gcc/ng/common/libgomp/default.nix
@@ -0,0 +1,87 @@
+{
+  lib,
+  stdenv,
+  gcc_meta,
+  release_version,
+  version,
+  getVersionFile,
+  monorepoSrc ? null,
+  autoreconfHook269,
+  runCommand,
+}:
+stdenv.mkDerivation (finalAttrs: {
+  pname = "libgomp";
+  inherit version;
+
+  src = runCommand "libgomp-src-${version}" { src = monorepoSrc; } ''
+    runPhase unpackPhase
+
+    mkdir -p "$out/gcc"
+    cp gcc/BASE-VER "$out/gcc"
+    cp gcc/DATESTAMP "$out/gcc"
+
+    cp -r libgomp "$out"
+    cp -r include "$out"
+
+    cp -r config "$out"
+    cp -r multilib.am "$out"
+    cp -r libtool.m4 "$out"
+
+    cp config.guess "$out"
+    cp config.rpath "$out"
+    cp config.sub "$out"
+    cp config-ml.in "$out"
+    cp ltmain.sh "$out"
+    cp install-sh "$out"
+    cp mkinstalldirs "$out"
+
+    [[ -f MD5SUMS ]]; cp MD5SUMS "$out"
+  '';
+
+  outputs = [
+    "out"
+    "dev"
+  ];
+
+  postUnpack = ''
+    mkdir -p ./build
+    buildRoot=$(readlink -e "./build")
+  '';
+
+  preAutoreconf = ''
+    sourceRoot=$(readlink -e "./libgomp")
+    cd $sourceRoot
+  '';
+
+  enableParallelBuilding = true;
+
+  nativeBuildInputs = [
+    autoreconfHook269
+  ];
+
+  configurePlatforms = [
+    "build"
+    "host"
+  ];
+
+  configureFlags = [
+    "--disable-dependency-tracking"
+    "cross_compiling=true"
+    "--disable-multilib"
+  ];
+
+  preConfigure = ''
+    cd "$buildRoot"
+    configureScript=$sourceRoot/configure
+  '';
+
+  doCheck = true;
+
+  passthru = {
+    isGNU = true;
+  };
+
+  meta = gcc_meta // {
+    homepage = "https://gcc.gnu.org/";
+  };
+})