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Cheviiot
6464da7847
A single-binary Go tool for cross compiling with the real MSVC toolchain on Linux via Wine. Behaves as cl/link/lib/rc/midl/mt/dumpbin/msbuild/ nmake/ml/ml64/armasm/armasm64/cmd/findstr depending on the name it's invoked as, plus download/install/env/version management subcommands. - download: fetches the MSVC/WinSDK installer manifest, resolves package selection and dependencies, downloads and verifies payloads, unpacks VSIX/MSI packages, and applies a handful of compatibility patches so VsDevCmd.bat and MSBuild's SDK detection work without a Windows Registry (which doesn't exist under Wine). - install: locates the installed toolchain/SDK versions, normalizes header/library name casing, lays out per-architecture tool symlinks with an env.json config each, and compiles a small native launcher (toolrelay.exe) that lets mt.exe's CMake-compatibility exit code survive Wine's own exit-code truncation. - The wrapper runtime rewrites absolute unix paths in tool arguments into Wine's z:\... form, runs the real .exe under wine, and rewrites the tool's output back to plain unix paths. Verified end-to-end against a real MSVC/WinSDK download: cl, link, mt and the resulting hello.exe all work under Wine, including through the toolrelay.exe relay path and with paths containing non-ASCII characters. Offline unit tests cover the wrapper's path-rewrite/output-filter logic, install-time header lowercasing, and download package-selection/ dependency-resolution.
40 lines
938 B
Go
40 lines
938 B
Go
package wrapper
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import (
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"os"
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"strings"
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)
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// clPostProcess mirrors cl's post-run fixup for `/P /Fi<file>` (preprocess-
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// to-file): the generated file still has CRLF endings and z:-prefixed
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// #line directives, so run it through the same line-directive rewrite used
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// for stdout.
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func clPostProcess(origArgs []string) {
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var hasP bool
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var fiFile string
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for _, a := range origArgs {
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switch {
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case a == "-P" || a == "/P":
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hasP = true
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case strings.HasPrefix(a, "-Fi") || strings.HasPrefix(a, "/Fi"):
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fiFile = a[3:]
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}
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}
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if !hasP || fiFile == "" {
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return
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}
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data, err := os.ReadFile(fiFile)
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if err != nil {
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return
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}
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lines := strings.Split(string(data), "\n")
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for i, line := range lines {
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line = stripCR(line)
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if reLineDirective.MatchString(line) {
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line = strings.ReplaceAll(stripFirstZDrive(line), `\\`, `/`)
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}
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lines[i] = line
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}
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_ = os.WriteFile(fiFile, []byte(strings.Join(lines, "\n")), 0o644)
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}
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