feat(toolchain): Linux→Windows MinGW cross toolchain (mingw-cross) — host≠target (0.0.92)#216
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…host≠target (0.0.92)
Cross-compile Windows x86_64 PE (incl. import std) from a Linux host — the
deferred host≠target axis registered in the 0.0.89 msvc-mingw design (§4.4/§7).
- registry: mingw-cross → xim mingw-cross-gcc (x86_64-w64-mingw32-g++ frontend,
triple-prefixed archiver, Linux-host index visibility)
- lifecycle: lift the Windows-host gate for the cross package (native mingw stays
Windows-only); skip glibc/linux-headers sysroot deps (PE own CRT)
- prepare: --target x86_64-w64-mingw32 convention → mingw-cross@16.1.0, static
- host≠target fixes surfaced by real end-to-end validation:
* gcc.cppm: find std module source under <prefix>/<triple>/include/c++/
* gcc.cppm + flags.cppm: self-contained toolchains (musl+mingw) skip external -B
(Linux as can't assemble MinGW PE/SEH output)
* flags.cppm: MinGW PE link (-static / -lstdc++exp) keyed on is_mingw_target
(target) instead of is_windows (host) — was unreachable on a Linux cross
- toolchain: from-source GCC 16.1.0 mingw-w64 MSVCRT cross, published at
xlings-res/mingw-cross-gcc + xim-pkgindex (import std verified under wine)
- tests: unit MapsMingwCrossSpecToCrossPackage; e2e 102_mingw_cross_wine.sh;
run_all mingw-cross/wine caps; CI cross-build-test mingw-cross-wine job
- design: .agents/docs/2026-07-15-mingw-linux-cross-windows-design.md
Verified end-to-end via the published ecosystem: mcpp toolchain install
mingw-cross → mcpp build --target x86_64-w64-mingw32 → PE32+ (KERNEL32+msvcrt
only) → wine runs import std + multi-module.
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Linux → Windows MinGW-w64 交叉工具链(
mingw-cross)在 Linux 主机上交叉编译出 Windows x86_64 PE(含
import std)。补 0.0.89msvc-mingw-design§4.4/§7 登记的延期项——工具链抽象的最后一维 host≠target。改动
mingw-cross→ ximmingw-cross-gcc(前端x86_64-w64-mingw32-g++、triple 前缀 archiver、Linux 主机 index 可见)mingw仍 Windows-only);跳过 glibc/linux-headers(PE 自带 CRT)--target x86_64-w64-mingw32约定 →mingw-cross@16.1.0,默认 staticgcc.cppm: std 模块源探测补<prefix>/<triple>/include/c++/子目录gcc.cppm+flags.cppm: 自包含工具链(musl+mingw)跳过外部-B(Linuxas编不了 MinGW 的 PE/SEH asm)flags.cppm: MinGW PE link(-static/-lstdc++exp)由is_windowshost 门改为is_mingw_targettarget 判定(此前 Linux 交叉永不进该分支)工具链 + 生态(已发布)
x86_64-pc-windows-gnu)xlings-res/mingw-cross-gcc(GitHub+GitCode)+xim-pkgindex(PR #389 已合)验证(全链实测闭环)
mcpp toolchain install mingw-cross 16.1.0→mcpp build --target x86_64-w64-mingw32→crosswin.exe(PE32+,仅 KERNEL32+msvcrt)→ wine 跑 import std + 多模块。单测 33/33;e2e102_mingw_cross_wine.sh过;CIcross-build-test加mingw-cross-winejob。设计:
.agents/docs/2026-07-15-mingw-linux-cross-windows-design.md(§11 实测结果 + 4 个 host≠target bug 复盘)。