[CMake] toolchain file - cross-compiling windows-amd64->windows-x86

Tue Sep 17 15:11:48 EDT 2019

Thanks, I'll check it out.

The toolchain file, as is, can generate ninja builds that can be used to
generate a executable, but when I execute them, he say :

```
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual
Studio 12.0/VC/bin/amd64_x86/cl.exe
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual
Studio 12.0/VC/bin/amd64_x86/cl.exe -- broken
CMake Error at C:/Program
Files/CMake/share/cmake-3.15/Modules/CMakeTestCCompiler.cmake:60 (message):
  The C compiler

    "C:/Program Files (x86)/Microsoft Visual Studio
12.0/VC/bin/amd64_x86/cl.exe"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir:
C:/Users/jpabreu/Desktop/testCMAKE/build_Win32_normal/CMakeFiles/CMakeTmp

    Run Build Command(s):C:/ProgramData/chocolatey/bin/ninja.exe cmTC_0dfb4
&& [1/2] Building C object CMakeFiles\cmTC_0dfb4.dir\testCCompiler.c.obj
    FAILED: CMakeFiles/cmTC_0dfb4.dir/testCCompiler.c.obj
    "C:\PROGRA~2\Microsoft Visual Studio 12.0\VC\bin\amd64_x86\cl.exe"
 -o CMakeFiles\cmTC_0dfb4.dir\testCCompiler.c.obj   -c testCCompiler.c
    ninja: build stopped: subcommand failed.

  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:2 (project)
```

Em ter, 17 de set de 2019 às 16:02, Juan Sanchez <juan.e.sanchez at gmail.com>
escreveu:

> From my brief research, it looks like the Microsoft version of CMake may
> have Ninja support.
>
>
> https://devblogs.microsoft.com/cppblog/cmake-support-in-visual-studio-whats-new-in-2017-15-3-update/
>
>
> Regards,
>
> Juan
>
> On Tue, Sep 17, 2019 at 1:36 PM Joao Pedro Abreu De Souza <
> jp_abreu at id.uff.br> wrote:
>
>> So, only the Visual Studio generator use the Arch option? I try generate
>> ninja build, but cmake(3.15.3) and the answer was
>>
>> ```
>> $ cmake -B build -S . -G "Ninja" -A Win32
>> CMake Error at CMakeLists.txt:2 (project):
>>   Generator
>>
>>     Ninja
>>
>>   does not support platform specification, but platform
>>
>>     Win32
>>
>>   was specified.
>>
>>
>> CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
>> CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
>> -- Configuring incomplete, errors occurred!
>> See also
>> "C:/Users/jpabreu/Desktop/testCMAKE/build/CMakeFiles/CMakeOutput.log".
>> ```
>>
>> Em ter, 17 de set de 2019 às 14:00, Juan Sanchez <
>> juan.e.sanchez at gmail.com> escreveu:
>>
>>> Hello,
>>>
>>> My impression that targeting 32 bit depends on what generator you are
>>> using.
>>>
>>> https://cmake.org/cmake/help/git-stage/generator/Visual%20Studio%2015%202017.html
>>>
>>> It looks like cmake now has:
>>>
>>>    - cmake -G "Visual Studio 15 2017" -A Win32
>>>    - cmake -G "Visual Studio 15 2017" -A x64
>>>
>>> It used to be that the default target platform was Win32, and  you had
>>> to specify Win64 in the generator string to target a 64 bit build.  For
>>> example with Visual Studio 2015
>>>
>>>
>>> https://cmake.org/cmake/help/git-stage/generator/Visual%20Studio%2014%202015.html
>>>
>>> For compatibility with CMake versions prior to 3.1, one may specify a
>>> target platform name optionally at the end of the generator name. This is
>>> supported only for:
>>> Visual Studio 14 2015 Win64Specify target platform x64.Visual Studio 14
>>> 2015 ARMSpecify target platform ARM.
>>>
>>>
>>> Regards,
>>>
>>> Juan
>>>
>>>
>>> On Tue, Sep 17, 2019 at 7:18 AM Joao Pedro Abreu De Souza <
>>> jp_abreu at id.uff.br> wrote:
>>>
>>>> cl from visual studio 2017.
>>>>
>>>> Em ter, 17 de set de 2019 03:26, Stéphane Ancelot <
>>>> sancelot at numalliance.com> escreveu:
>>>>
>>>>> Hi,
>>>>>
>>>>> That first depends on which compiler you will use ?
>>>>>
>>>>> Regards,
>>>>>
>>>>> S.Ancelot
>>>>> Le 16/09/2019 à 22:32, Joao Pedro Abreu De Souza a écrit :
>>>>>
>>>>> Hi guys. I am trying to generate,using cmake, a executable with target
>>>>> Windows 32 bits using Windows 64 bits, but cannot find a standard toolchain
>>>>> file (I find to Linux, to Android, but can't find to Windows 32 bits) to
>>>>> build. Do you know some repository of toolchain files that has Windows 32
>>>>> bits from Windows 64 bits? Or maybe someone has a standard toolchain file
>>>>> to this type of thing.
>>>>>
>>>>> Thanks in advance.
>>>>>
>>>>> --
>>>>
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