[cmake-developers] [CMake 0012936]: ExternalProject_Add - CMAKE_GENERATOR is not passing "-G" option properly

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://www.cmake.org/Bug/view.php?id=12936 
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Reported By:                sarnath
Assigned To:                
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Project:                    CMake
Issue ID:                   12936
Category:                   CMake
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             2012-02-06 00:40 EST
Last Modified:              2012-02-06 00:40 EST
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Summary:                    ExternalProject_Add - CMAKE_GENERATOR is not passing
"-G" option properly
Description: 
I have 2 CMAKE projects. I want one of them to compile as 64 bit application and
other as 32-bit application. The 32-bit app is typically a tool that will be
used in generating some sources required for the 64-bit compilation. Thats the
scenario we have.
So, in the 64-bit app, i just "ExternalProject_Add" the 32-bit CMAKE project and
use an appropriate generator, say "Visual Studio 9 2008", in the CMAKE_GENERATOR
argument. I compile the 64-bit app from native x64 visual studio command prompt
with "NMake Makefiles" generator - which builds in 64-bit mode.
The CMAKE configuration goes fine. When I do "nmake", I get into errors from
devenv command -- resulting from cmake --build of the 32-bit project. devenv
reports "Invalid solution configuration".
The reason is that the parent CMAKE passes "-GVisual Studio 9 2008" option to
the child CMAKE instead of -G "Visual Studio 9 2008". This results in the child
cmake using a bad configuration (instead of debug/release).

Steps to Reproduce: 
Unzip the attached file. IT will create a directory called "cmake_gen_bug".
cd into it.
cd bin
cmake -DCMAKE_VERBOSE_MAKEFILE=on -G "NMake Makefiles" ..
nmake



Additional Information: 
This "nmake" would fail with an error message "Invalid solution configuration".
It fails regardless of "CMAKE_VERBOSE_MAKEFILE" is ON or OFF. But VERBOSE
makefile option will enable us to see what is wrong. 
Just browse above the "invalid solution configuration" message to the place
where parent "cmake" actually calls the child CMAKE. You can see that it calls
the child CMAKE with "-GVisual Studio 9 2008" instead of -G "Visual Studio 9
2008".
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Issue History 
Date Modified    Username       Field                    Change               
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2012-02-06 00:40 sarnath        New Issue                                    
2012-02-06 00:40 sarnath        File Added: cmake_gen_bug.zip                   

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