[CMake] project() with ASM fails with MSVC 19

[Robert Dailey]

I haven't; the bigger issue here is that the way we specify ASM
changes depending on platform. But prior to the project() call, you
can't really use CMake to its fullest since project() serves as
practically an "initialize CMake" function. So there's a catch 22
situation here.

My expectation was that you specify the LANGUAGE, i.e. "ASM" and the
platform cmake scripts within CMake's module directory would deduce
"Ok I'm on Windows, so I know it's really MASM".

On Tue, Sep 19, 2017 at 3:35 PM, Robert Maynard
<robert.maynard at kitware.com> wrote:
> Have you tried setting the project call of project(libpng VERSION
> 1.6.33 LANGUAGES ASM_MASM C)
>
> On Tue, Sep 12, 2017 at 2:34 PM, Robert Dailey <rcdailey.lists at gmail.com> wrote:
>> Also, I am using the "Visual Studio 15 2017" generator with no other
>> options (generating through cmake-gui on Windows)
>>
>> On Tue, Sep 12, 2017 at 1:33 PM, Robert Dailey <rcdailey.lists at gmail.com> wrote:
>>> Using CMake 3.9, I do this:
>>>
>>> cmake_minimum_required(VERSION 3.9)
>>> project(libpng VERSION 1.6.33 LANGUAGES ASM C)
>>>
>>> I get the following error:
>>>
>>> -- The ASM compiler identification is unknown
>>> -- Didn't find assembler
>>> -- The C compiler identification is MSVC 19.11.25507.1
>>> CMake Error at CMakeLists.txt:16 (project):
>>> No CMAKE_ASM_COMPILER could be found.
>>>
>>>
>>> Why doesn't this work?
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