[CMake] Potential bug: Having executables named "test" causes Ninja generator to generate ambiguous rules...

[Malfettone, Kris]

Hi,
I am trying to migrate a very large project from cmake 2.8.11.2 + ninja 1.3.4 to cmake 3.7.2 + ninja 1.7.2 and found what might be a bug with the ninja generator.  In my project we have a number of executables that are named "test".  This is normally not a problem since each one as a different target name that is unique.  However, with the move to CMake 3.7.2 the Ninja generator seems to generate ambiguous target aliases for the project.  If I rename my outputs to something such as "testfoo", the problem goes away.  Looking at the build.ninja that is generated there are clearly multiple ambiguous targets.  One that I generates the output file named "test" and one I believe meant to run our unit tests.  That second part I believe is what is different between the versions of CMake that I am using.

The other thing is I believe even if those are removed there would be a final ambiguity between my executable and built in "test" command because the portion of the code the generates the section of the build.ninja file commented as "# Target aliases." seems to try and avoid ambiguities between targets but fails to consider built in cmake targets such as "test,install,install/strip,etc..."

Again, I am not a build.ninja expert so I may be wrong in my understanding.  Some further info, this does not occur on windows because on windows the targets all end with ".exe" and it does not happen with the Makefile generator on Linux.

Is this expected behavior?
If so, are executables named "test" no longer supported?
Am I missing something or wrong in some way?

Any help would be appreciated.

Thanks,
Kris Malfettone

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