[CMake] Cannot get a 64-bit build of MySQL on a 64-bit Windows machine

Tue Jul 11 06:58:41 EDT 2017

J Decker, thank you.  I honestly didn't even know of its existence.  I ran
it as you suggested, and it's great to be able to see all the flags.
Thanks so much again.

[image: Inline image 1]

On Tue, Jul 11, 2017 at 1:50 PM, J Decker <d3ck0r at gmail.com> wrote:

> Alternatively you could use cmake-gui and on first generation in an empty
> directoy, a popup window appears allowing you to select the generator.
>
> mkdir build2
> cd build2
> cmake-gui ..
>
> then set the various flags in the gui.
>
>
> On Tue, Jul 11, 2017 at 3:13 AM, A.M. Sabuncu <amsabuncu at gmail.com> wrote:
>
>> Petr,
>>
>> Thank you so much.  The following command you suggested fixed the
>> problem, and I was able to run a successful build:
>>
>> cmake .. -G "Visual Studio 15 2017 Win64"
>>
>> I am grateful for your help.  This may have been a minor item for you,
>> but for me, it was a real stumbling block.
>>
>> By the way, the other alternative you suggested did not work:
>>
>> cmake .. -A Win64   (or "Win64")
>>
>> The result was:
>>
>> -- Building for: Visual Studio 15 2017
>> -- Running cmake version 3.8.2
>> -- Found Git: C:/Program Files/Git/cmd/git.exe (found version
>> "2.10.2.windows.1")
>> -- Configuring with MAX_INDEXES = 64U
>> -- The C compiler identification is unknown
>> -- The CXX compiler identification is unknown
>> CMake Error at CMakeLists.txt:126 (PROJECT):
>>   No CMAKE_C_COMPILER could be found.
>>
>> The funny thing is that the use of the -G flag does not issue a "Building
>> for..." message, but correctly locates the necessary compiler, whereas the
>> -A flag seems to know what target it is building for, but cannot find the
>> compiler!
>>
>> Thank you again,
>>
>> A. M. Sabuncu
>>
>> On Tue, Jul 11, 2017 at 10:12 AM, Petr Kmoch <petr.kmoch at gmail.com>
>> wrote:
>>
>>> Hi,
>>>
>>> when generating a Visual Studio buildsystem with CMake, you can specify
>>> the target architecture. If you don't, the default is 32-bit.
>>>
>>> To specify the architecture, either put it into the generator name:
>>>
>>>   cmake .. -G "Visual Studio 15 2017 Win64" ....
>>>
>>> or specify just the architecture using -A:
>>>
>>>   cmake .. -A Win64 ....
>>>
>>> See description of -G and -A in CMake docs:
>>> https://cmake.org/cmake/help/latest/manual/cmake.1.html
>>>
>>> Petr
>>>
>>> On 10 July 2017 at 22:06, A.M. Sabuncu <amsabuncu at gmail.com> wrote:
>>>
>>>> I am completely new to CMake, and am using to build MySQL 5.7.18 on
>>>> Windows 10 x64, using the following command:
>>>>
>>>> cmake .. -DDOWNLOAD_BOOST=1 -DWITH_BOOST="C:\Boost" -DENABLE_DOWNLOADS=1
>>>>
>>>> I have VS 2017 installed, and I am on 64 bit machine, but for some
>>>> reason, the above command produces the following output:
>>>>
>>>> The CXX compiler identification is MSVC 19.10.25019.0
>>>> -- Check for working C compiler: C:/Program Files (x86)/Microsoft
>>>> Visual Studio/2017/Professional/VC/Tools/MSVC/14.10.25017/bin/HostX
>>>> 86/x86/cl.exe
>>>> -- Check for working C compiler: C:/Program Files (x86)/Microsoft
>>>> Visual Studio/2017/Professional/VC/Tools/MSVC/14.10.25017/bin/HostX86/x86/cl.exe
>>>> -- works
>>>>
>>>> The correct compiler is in the HostX64/x64 folder.
>>>>
>>>> Thinking that CMake might be looking it up from there, I checked the
>>>> processor architecture environment variable from the same cmd.exe that I
>>>> launched the CMake command from, and here's the result:
>>>>
>>>> PROCESSOR_ARCHITECTURE=AMD64
>>>>
>>>> When I follow the above CMake command with the following:
>>>>
>>>> devenv MySQL.sln /build RelWithDebInfo
>>>>
>>>> I get 32-bit results generated, which is not what I want.
>>>>
>>>> How can I get CMake to generate a 64-bit build?
>>>>
>>>> Thanks so much.
>>>>
>>>>
>>>> --
>>>>
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>>>
>>
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>>
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>>
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>>
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