On 2010-03-14 15:28-0400 Bill Hoffman wrote:
Perhaps adding the flags causes the compiler to be mis-identified somehow. Can you run with the gcc -g -fvisibility=hidden, and without on a very simple C only project. Then send me the binary trees from both. I am suspecting there will be some sort of error in the compiler id code.
Better yet, let me send you a simple test case project (attached) where you can easily demonstrate and investigate this issue for yourself. Note, if you use export CC='gcc -g' all is well with this simple test case, and the -fPIC flag is used appropriately. However, export CC='gcc -g -g' triggers the bug with cmake-2.8.1-rc4. (i.e., the -fPIC flag is incorrectly dropped). I didn't use -fvisibility=hidden for the second flag becausethis simple project is not set up for that, and there should be no harm in simply repeating the -g flag. But from my bad PLplot build result with
export CC='gcc -g -fvisibility=hidden' I expect the dropped -fPIC problem will occur whenever there are two flags of any kind. Alan __________________________ Alan W. Irwin Astronomical research affiliation with Department of Physics and Astronomy, University of Victoria (astrowww.phys.uvic.ca). Programming affiliations with the FreeEOS equation-of-state implementation for stellar interiors (freeeos.sf.net); PLplot scientific plotting software package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project (lbproject.sf.net). __________________________ Linux-powered Science __________________________
test_c_library_build.tar.gz
Description: simple test project that illustrates dropped -fPIC bug
_______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
