Alan W. Irwin wrote:
On 2009-07-15 22:54-0600 Clinton Stimpson wrote:


I don't have much to say except that ccmake behaves the same as cmake-gui in this case.
You can add this at the end to see it.
set(MYSTATUS ${CMAKE_CXX_COMPILER_WORKS} CACHE STRING "")

Thanks for pointing that out.  This can of worms just keeps getting worse
and worse.  I have confirmed your ccmake result by looking in the resulting
CMakeCache.txt file where (unlike the cmake result) no reference to
CMAKE_CXX_COMPILER_WORKS appears.


I am not really sure what this issue is...


This is certainly not an expected use case:

include(CMakeDetermine<language>Compiler)
before
enable_language(<language> OPTIONAL)

If you look in cmGlobalGenerator.cxx there is a big comment about how all the files work together to enable a language. I am not surprised that including this stuff out of order is causing trouble. I am also not sure why the gui's would be different...

The right thing would be to implement the OPTIONAL part. I don't know if I will have time for this before 2.8 (patches are welcome...). As a work around I would suggest trying to find a compiler with the same algorithm as CMakeDetermine does. I can try to help you implement if you want...

-Bill
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