Merge pull request #324 from isuruf/mingw

support mingw on windows

recipe/meta.yaml

@@ -1,6 +1,6 @@
 {% set version = "19.1.2" %}
 {% set major_version = version.split(".")[0] %}
-{% set build_number = 0 %}
+{% set build_number = 1 %}
 
 # always includes minor as of v18, see https://github.com/llvm/llvm-project/issues/76273
 {% set maj_min = major_version ~ "." ~ version.split(".")[1] %}
@@ -36,6 +36,7 @@ source:
       - patches/0007-set-libclang-SOVERSION-unconditionally.patch
       - patches/0008-Make-PIE-default-on-macOS-too.patch
       - patches/0009-Find-ROCm-device-library-in-conda-layout.patch
+      - patches/0010-Add-conda-mingw-paths.patch
     # name folder for easier deletion; we do the equivalent of downloading
     # the subproject sources, so the work folder then has clang in it;
     # for details see build scripts
@@ -473,6 +474,7 @@ outputs:
     test:
       requires:
         - {{ compiler("cxx") }}
+        - gxx_impl_{{ target_platform }}  # [win64]
       files:
         - mytest.cxx
       commands:
@@ -481,6 +483,7 @@ outputs:
         - unset CONDA_BUILD_SYSROOT   # [unix]
         - set "CONDA_BUILD_SYSROOT="  # [win]
         - clang++ -v -c mytest.cxx
+        - clang++ -v mytest.cxx --target=x86_64-w64-mingw32  # [win64]
 
   - name: clang-format-{{ major_version }}
     script: install_clang_format.sh  # [unix]

recipe/patches/0010-Add-conda-mingw-paths.patch

@@ -0,0 +1,38 @@
+From b9574b59ea44cfb30ff50633b3b346faba39b39b Mon Sep 17 00:00:00 2001
+From: Isuru Fernando <isuruf@gmail.com>
+Date: Fri, 18 Oct 2024 10:28:09 -0400
+Subject: [PATCH 10/10] Add conda mingw paths
+
+---
+ clang/lib/Driver/ToolChains/MinGW.cpp | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/clang/lib/Driver/ToolChains/MinGW.cpp b/clang/lib/Driver/ToolChains/MinGW.cpp
+index c81a7ed17029..4f47e01fda58 100644
+--- a/clang/lib/Driver/ToolChains/MinGW.cpp
++++ b/clang/lib/Driver/ToolChains/MinGW.cpp
+@@ -532,6 +532,10 @@ toolchains::MinGW::MinGW(const Driver &D, const llvm::Triple &Triple,
+   getFilePaths().push_back(
+       (Base + SubdirName + llvm::sys::path::get_separator() + "mingw/lib").str());
+
++  // Conda
++  getFilePaths().push_back(
++      (Base + SubdirName + llvm::sys::path::get_separator() + "sysroot/usr/lib").str());
++
+   // Only include <base>/lib if we're not cross compiling (not even for
+   // windows->windows to a different arch), or if the sysroot has been set
+   // (where we presume the user has pointed it at an arch specific
+@@ -698,6 +702,10 @@ void toolchains::MinGW::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
+   addSystemInclude(DriverArgs, CC1Args,
+                    Base + SubdirName + llvm::sys::path::get_separator() + "usr/include");
+
++  // Conda
++  addSystemInclude(DriverArgs, CC1Args,
++                   Base + SubdirName + llvm::sys::path::get_separator() + "sysroot/usr/include");
++
+   // Only include <base>/include if we're not cross compiling (but do allow it
+   // if we're on Windows and building for Windows on another architecture),
+   // or if the sysroot has been set (where we presume the user has pointed it
+-- 
+2.44.0
+