[llvm-bugs] [Bug 44551] New: Impossible to build Go and OCaml bindings on Windows using MSYS2

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=44551

            Bug ID: 44551
           Summary: Impossible to build Go and OCaml bindings on Windows
                    using MSYS2
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows XP
            Status: NEW
          Severity: normal
          Priority: P
         Component: Support Libraries
          Assignee: unassignedbugs at nondot.org
          Reporter: stephen.gutekanst at gmail.com
                CC: llvm-bugs at lists.llvm.org

It is currently impossible to build the Go and OCaml bindings on Windows
natively under e.g. MSYS2 due to two issues in the build configuration/scripts:

1.
[`build.sh`](https://github.com/llvm/llvm-project/blob/master/llvm/bindings/go/build.sh#L11)
cannot handle quoted arguments, which prevents passing `-G "MSYS Makefiles"` to
the script -- making it impossible to generate MSYS-compatible Makefiles.

2. In
[`config-ix.cmake`](https://github.com/llvm/llvm-project/blob/master/llvm/cmake/config-ix.cmake#L546-L547)
WIN32 (i.e. non-Cygwin environments like MSYS or native Windows) explicitly
disables building the Go bindings without any way to attempt building them.

I have a simple patch here which resolves the issue for Go (but I haven't
tested OCaml, there could be other issues there). I have not yet had a chance
to submit this via LLVM's patch submission process, but hope to do so soon:
https://github.com/hexops/llvm-project/commit/3dd7f1a23d70c9e809fdda5b1d0f15175d6bfe8a?w=1

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