new(mingw-w64.org): Windows runtime libs (headers + CRT + winpthreads) — from source#13047
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Pure runtime — Windows API headers, C runtime, and pthread emulation. NOT a compiler; just the *target-side* libs that a Windows-targeting clang/gcc needs to actually produce working .exe/.dll output. The compiler itself comes from pantry's existing llvm.org (clang + lld). Built from source for x86_64-w64-mingw32 + aarch64-w64-mingw32 using pantry's llvm.org clang as the cross compiler (LLVM is multi-target by default; --target=*-w64-mingw32 works natively). Build order per target: 1. mingw-w64-headers — install only (.h files) 2. mingw-w64-crt — CRT compiled against headers from (1) 3. winpthreads — pthread emulation on top of (2) Composed by llvm.org/mingw-w64 (separate recipe) which wraps clang into per-target driver scripts (x86_64-w64-mingw32-clang, etc.). This replaces the previous vendored-tarball approach of llvm.org/mingw-w64 — pkgx pantry policy is from-source over vendored binaries.
4 tasks
…ses) Upstream `mingw-w64/mingw-w64` only publishes git tags (v9.0.0, v10.0.0, ... v14.0.0) — no GitHub releases. Default `github:` mode queries the releases endpoint first and falls back to tags, but the fallback wasn't producing entries in CI. Force tags mode explicitly via `github: mingw-w64/mingw-w64/tags` and add `strip: - /^v/` to drop the v prefix. Fixes "no versions parsed" failure on all 4 CI runners.
CRT configure failed with "Please check if the mingw-w64 header set
and the build/host option are set properly." — it probes `<windows.h>`
via CC, but clang had no sysroot pointing at the just-installed
headers.
Re-order: install headers first, THEN export CC/CXX with
`--sysroot={{prefix}}/$T` so the cross-compiler can find them.
Matches what llvm-mingw upstream does.
4 tasks
Headers + CRT now build cleanly with --sysroot, but winpthreads failed at the resource-compile step: libtool: error: unrecognised option: '-i' libtool needs RC set so it recognises the windres-compile path through its wrapper. Add `export RC=llvm-windres` (and WINDRES for configure-script consistency).
winpthreads' version.rc includes <winver.h> from the mingw-w64
headers. CC --sysroot handles regular C compiles, but windres uses
its own include path — and without `-I`, it can't find winver.h:
../mingw-w64-libraries/winpthreads/src/version.rc:23:10:
fatal error: 'winver.h' file not found
Pass RCFLAGS=-I{{prefix}}/$T/include to the winpthreads configure
so windres looks in the same place clang's sysroot does.
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Linux x86_64 + aarch64 both green on the latest commit — the from-source build works end-to-end (headers + CRT + winpthreads). darwin x64 / darwin ARM64 fail but logs aren't API-accessible (self-hosted runners return 404). @jhheider could you paste the tail of the failing darwin job? The Linux fix was 3-step:
Darwin uses the same
Job URLs: |
winpthreads' libtool link step failed with:
checking command to parse nm output from clang
--target=x86_64-w64-mingw32 --sysroot=... object... failed
make[2]: *** [libwinpthread.la] Error 1
because the host's GNU nm doesn't grok PE/COFF objects emitted by
clang's mingw32 target. Wire libtool to llvm-nm (which handles every
object format LLVM emits, including PE) plus the rest of the binutils
libtool probes — llvm-strip / llvm-objdump / llvm-objcopy — so we don't
hit the same wall again on the next libtool stage.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…F pipe libtool's configure-time nm probe constructs a global_symbol_pipe that, with llvm-nm on PE/COFF objects, ends up missing a filter stage and emits `llvm-nm ... | | sed ...` (double pipe → shell syntax error). This only affects the shared (DLL) link path; the static .a build never goes through that pipeline. Switch winpthreads to --enable-static --disable-shared so we get libpthread.a (which is what mingw-w64 consumers link against) and sidestep the broken libtool nm-probe. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…test darwin libtool installs the static winpthread as libwinpthread.lib (PE-style .lib extension), not libpthread.a. linux libtool installs libpthread.a. The build itself succeeds on both; only our verify step rejected darwin output. Accept either filename so the darwin job goes green. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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Pure Windows runtime (headers + CRT + winpthreads), built from source for x86_64 + aarch64 targets. NOT a compiler — just the target-side libs.
Cross-compiled using pantry's existing llvm.org clang (
--target=*-w64-mingw32).Companion to #12984 which will be refactored to compose this runtime + pantry's llvm.org into the full Windows cross-toolchain (instead of vendoring upstream's prebuilt llvm-mingw).