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feat(windows): a Windows target for ludicc, and the compiler builds itself there

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--target <triple> (default: the host, from OS=Windows_NT) selects the Windows
runtime. emit_win.ludic defines the POSIX names the backend already calls over
the UCRT and Win32 in IR, so rename replaces an existing file, ftell is 64-bit,
and fopen is binary. Known folders follow %APPDATA% / %LOCALAPPDATA% / %TEMP%,
and the driver speaks cmd.exe, writes .exe outputs and finds LLVM's clang.

Verified: macOS three-stage fixpoint, ludic-dev test 135/135, and on Windows
the Mac-emitted Windows IR and the Windows-built compiler's IR are identical
through two generations.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-13 01:59:41 +03:00
parent 572e09b2b1
commit 5801005fca
15 changed files with 23292 additions and 21806 deletions
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selfhost/backend/emit_decl.ludic
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@ -226,7 +226,7 @@ function emit_program() -> void {
if g_uses_noisert { emit_noise_prelude() } # @lp_noise_value2/perlin2/simplex2/fbm2/cellular2 (Q16.16)
if g_uses_logrt { emit_log_prelude() } # @L_log_level + @lp_log_emit (levelled stderr sink)
if g_uses_osrt { emit_os_prelude() } # @lp_os_args/platform/arch/save_dir/... (libc env + uname)
if g_uses_pid { emith("declare i32 @getpid()\n") }
if g_uses_pid and (not g_target_win) { emith("declare i32 @getpid()\n") }
if g_uses_unicodert { emit_unicode_prelude() } # @lp_uni_len/valid/decode/case/truncate/grapheme (UTF-8)
if g_uses_fsrt { emit_fs_prelude() } # @fn_fs_*/fn_path_*/fn_mime_* (libc + string ops)
if g_uses_pak { emit_pak_prelude() } # @lp_pak_* asset packs + the pre-main mount ctor