[CMake] PreprocessToFile

[J Decker]

On Sat, May 5, 2018 at 9:57 AM, KK <kristianonline28 at gmail.com> wrote:

> Oh, maybe you misunderstood me. I know, that CMake does no preprocessing.
> This is done by the preprocessor.
>
Right; that's not what I was saying; it doesn't generte projects with
preprocesssing enabled, so the options ARE false already in the generated
projects.

> But, what I want, is that the generated solution/VS-project with CMake
> gives me the result like in the part I've pasted below. This should be part
> of the generated files. And my question is, is it possible to generate this
> and if, how?
>
It does.
Oh I see, it doesn't actually write that out; but the default IS false...
so it shouldn't have to.
I did some testing, and setting a project to preprocess to a file,
it(visual studio)   writes <PreprocessToFile>true</PreprocessToFile>
If I reset that back to default/inhert from project; it deletes that entry
entirely from the project.
So; unless you want it ENABLED correct behavior should be to not write it
(which, like I said, cmake already does (or rather doesn't do))



> =====
> <ClCompile Include="abc.cpp">
>
> <PreprocessToFile Condition="'$(Configuration)|(
> Platform)'=='Release|x64'">
>
> false
>
> </PreprocessToFile>
>
> <PreprocessKeepComments Condition="'$(Configuration)|$
> (Platform)'=='Release|x64'">
>
> false
>
> <PreprocessKeepComments>
>
> </ClCompile>
>
> =====
>
> Am 05.05.2018 um 16:31 schrieb J Decker:
>
>
>
> On Sat, May 5, 2018 at 7:02 AM, Kristian <kristianonline28 at gmail.com>
> wrote:
>
>> Hi,
>>
>> I have a Visual Studio 2015 Solution with some C++ projects in it. I
>> try to generate the same solution and the projects with CMake. Now,
>> there is a part, where I do not know how to solve this.
>>
>> In a vcxproj file, there is something like this written:
>>
>> =====
>> <ClCompile Include="abc.cpp">
>>
>>   <PreprocessToFile Condition="'$(Configuration)|$
>> (Platform)'=='Release|x64'">
>>     false
>>   </PreprocessToFile>
>>
>>   <PreprocessKeepComments
>> Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
>>     false
>>   <PreprocessKeepComments>
>> </ClCompile>
>> =====
>>
>> So, now my question: Is it possible, to get the same result with CMake
>> here?
>> --
>>
>
> Yes; and you don't need to do anything; cmake doesn't preprocess to a file
> by default (or by any option I know of).
> So what you have indicated... 'false' 'false' is what cmake generates.
>
>
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>
>
>
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