[Mesa-dev] [Bug 94072] error: The command line is too long when building MESA on Windows with MinGW-W64

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94072

            Bug ID: 94072
           Summary: error: The command line is too long when building MESA
                    on Windows with MinGW-W64
           Product: Mesa
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Windows (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Other
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: sav_ix at ukr.net
        QA Contact: mesa-dev at lists.freedesktop.org

Hi,

Used stuff:
- Windows 10,
- MinGW-W64 (5.3.0-<i686,x86_64),
- MSYS2 (4.3.42(4)-release-(x86_64-pc-msys)),
- Python (2.7.11),
- SCons (2.4.1),
- MESA (11.1.*-dev from git-repository).

For <i686,x86_64> builds got error:
===============================================================
scons.py build=release platform=windows toolchain=mingw machine=x86_64
libgl-gdi

[snip]

  Archiving build\windows-x86\mesa\libmesa.a ...
  Compiling src\gallium\auxiliary\draw\draw_pipe_twoside.c ...
The command line is too long.
scons: *** [build\windows-x86_64\mesa\libmesa.a] Error 1
scons: building terminated because of errors.
===============================================================

I found that it's very similar to which was reported four years ago:
"The command line is too long..."
(details at
https://lists.freedesktop.org/archives/mesa-users/2012-October/000496.html ).

Other users also experienced it:
"Compiling Mesa natively on Windows using GCC with SCons results in "the
command line is too long" error during linking..."
(details at https://wiki.qt.io/Cross_compiling_Mesa_for_Windows ).

While looking for solution, found in SCons wiki:
"MingW had some problems during the link phase of the build process. It turned
out our link lines were in excess of 10000 characters, and this was causing
some major grief with python calling spawn()..."
(details at https://bitbucket.org/scons/scons/wiki/LongCmdLinesOnWin32 ).

I assume this error last for such long, because testing of MESA builds using
MinGW* was made on Linux with cross-compiling to Windows. Could it be fixed?


Regards,

Alexander

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