windows: support bun:ffi (#8114)

* compile tcc

* initial linking

* ffi and stuff

* swag

* wala

* Update settings.json

---------

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>
Co-authored-by: Jarred Sumner <jarred@jarredsumner.com>

scripts/all-dependencies.ps1

@@ -65,9 +65,9 @@ Build-Dependency `
 Build-Dependency `
   -Script "mimalloc" `
   -Outputs @("mimalloc.lib")
-# Build-Dependency `
-#   -Script "tinycc" `
-#   -Outputs @("tcc.lib")
+Build-Dependency `
+  -Script "tinycc" `
+  -Outputs @("tcc.lib")
 Build-Dependency `
   -Script "zlib" `
   -Outputs @("zlib.lib")

scripts/build-tinycc.ps1

@@ -0,0 +1,30 @@
+$ErrorActionPreference = 'Stop'  # Setting strict mode, similar to 'set -euo pipefail' in bash
+. (Join-Path $PSScriptRoot "env.ps1")
+
+Push-Location (Join-Path $BUN_DEPS_DIR 'tinycc')
+try {
+  cd win32
+  Run .\build-tcc.bat -clean
+  cd ..
+
+  Set-Content -Path config.h -Value @"
+#define TCC_VERSION "$(Get-Content VERSION)"
+#define TCC_GITHASH "$(git rev-parse --short HEAD)"
+#define CONFIG_TCCDIR "$((Get-Location).Path.Replace('\', '/'))"
+#define CONFIG_TCC_PREDEFS 1
+#ifdef TCC_TARGET_X86_64
+#define CONFIG_TCC_CROSSPREFIX "$PX%-"
+#endif
+"@
+
+  Run clang-cl -DTCC_TARGET_PE -DTCC_TARGET_X86_64 config.h -DC2STR -o c2str.exe conftest.c
+  Run .\c2str.exe .\include\tccdefs.h tccdefs_.h
+
+  # TODO: -MT
+  Run clang-cl libtcc.c -o tcc.obj "-DTCC_TARGET_PE" "-DTCC_TARGET_X86_64" "-O2" "-W2" "-Zi" "-MD" "-GS-" "-c"
+  Run lib "tcc.obj" "-OUT:tcc.lib"
+
+  Copy-Item tcc.obj $BUN_DEPS_OUT_DIR/tcc.lib
+
+  Write-Host "-> tcc.lib"
+} finally { Pop-Location }