Alan W. Irwin wrote: > Hi Hazen: > > This is mostly addressed to you, but there is a question at the end for all > our developers. > > On 2009-07-23 12:23-0400 Hazen Babcock wrote: > >> [...]I think I managed to figure out a few things. Maybe the problem >> is with the cmake command that is used to test the c++ compiler (the >> one that is run by language_support.cmake)? If I run the same command >> by hand: >> >> xx\plplot_build\language_tests\CXX>"c:\Program Files\CMake >> 2.6\bin\cmake.exe" . >> >> I get: >> >> CMake Error: CMake was unable to find a build program corresponding to >> "Visual Studio 6". CMAKE_MAKE_PROGRAM is not set. You probably need to >> select a different build tool. >> >> Anyway, if I simply comment out the workaround_9220 section in >> c++.cmake then I can build PLplot with the Qt drivers and (untested) >> PyQt4 support so it all looks very promising. > > Thanks for that information which I think contains a strong clue about what > is happening. workaround_9220 does a small test run of the cmake > command to > check the language support. But when executing that test run, it just > invoked cmake with no generator specified. That default won't work if an > overall generator is specified (which I assume it true in your case). To > fix this I propagated the overall generator to the test run (revision > 10176). > > Please give that a try.
It works now, thanks! > Note, there are quite a few ways within CMake to choose a compiler such as > specifying CMAKE_<lang>_COMPILER or CMAKE_<lang>_COMPILER_INIT. There are > also a large plethora of ways to specify options for any given compiler. > workaround_9220 ignores all of that because I think it is too > complicated to > propagate all the possibilities while still insuring a reliable result. > workaround_9220 should work fine if you use the default compiler for your > generator or if you have specified the compiler (and flags) with the > appropriate environment variable, e.g., > > export CXX="g++ -g -fvisibility=hidden" > > since the environment variable should just propagate to the test cmake run. > > I am inclined to simply say in the release notes that until CMake bug 9220 > is fixed, we do not support any methods of specifying the compiler for the > soft landing logic other than using the appropriate environment > variable. Sounds reasonable to me. I almost never specify the compiler anyway and simply rely on cmake to pick up the right compiler. -Hazen ------------------------------------------------------------------------------ _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
