[LLVMdev] Fwd: RFC: "Building with MinGW on Windows" (DOC, NEW)

[Mikael Lyngvig]

Hi Takumi,

THANK YOU for your excellent review!  It makes all the work worthwhile in
itself.

It is getting "late" here (it is early morning) so I am about to call it a
day.  But I will contemplate and incorporate your suggestions tomorrow, and
send you a full reply.  I think I originally wrote a document where I
addressed both Visual Studio and MinGW, but then decided that there were
way too many "if this" and "if that"s to continue on that path.

Thanks again :-)


Cheers,
Mikael


2012/6/16 NAKAMURA Takumi <geek4civic at gmail.com>

> Mikael,
>
> Thanks for working on.
>
> My gross comments...
>
> - Canonical URL of LLVM project is; http://llvm.org/ , not www.llvm.org.
>
> - "test-suite and cygwin" could be split out. It would be special thing.
>
> - Memory/storage requirements would be moved to "A.B Debugging". Less
> memory would be enough without debug build.
>
> - Python (x64 binary) is available, too. I am using.
>  Python 2.7.1 (r271:86832, Nov 27 2010, 17:19:03) [MSC v.1500 64 bit
> (AMD64)] on win32
>
> - Distinguish "test-suite" and "{llvm|clang} tests". (Installing GnuWin32)
>
> - Don't recommend to delete MSYS sh.exe in "Installing CMake". Use
> MSYS Makefiles instead with msys.
>
> - gnuwin32 is not needed on %PATH% if gnuwin32 is dedicated to tests.
> Use LLVM_LIT_TOOLS_DIR instead then.
>  (gnuwin32 is not needed when person is working on MSYS bash shell, FYI)
>
> - cmake and python are needed on %PATH%, as long as they are not
> invoked explicitly.
>  cmake-generated Makefiles know where they are.
>  eg. "make edit_cache", "make check"
>
> - If the target of this would be for newbies, you may mention "cmake-gui",
> too.
>  FYI, I am usually use cmake-gui.exe, because I am n00b.
>
> - (Building the Sources), In my experience, make.exe -jN tends to be
> choked. I don't know where is -jN-stable gnu make on mingw. (Lemme
> know if you knew better version of make!)
>
> - Why don't you mention "make {check|clang-test|check-all}", despite
> of introducing gnuwin32?
>
> - You forgot to mention a few important cmake variables.
>
>  - CMAKE_BUILD_TYPE=Release (for most purpose)
>  - CMAKE_INSTALL_PREFIX (Who would be happy if clang were installed
> onto C:\PROGRA~1\?)
>  - LLVM_LIT_TOOLS_DIR, to use gnuwin32 dedicated to testing llvm and clang.
>  - LLVM_EXTERNAL_CLANG_SOURCE_DIR, to check out clang outside from
> llvm source tree
>  - PYTHON_EXECUTABLE, if %PATH% does not contain python.
>
> - Consider to introduce ninja?
>
> Anyway, this could be integrated to "GettingStartedVS.html" ;)
>
> ...Takumi
>
> ps. feel free to visit and ask me on the irc, oftc#llvm.
>
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