Christian Henning wrote:
Hi there, I'm finishing up some linker problems I have with gcc. One area of problems seems to be static in_class constants that I have declared in my header file. MSVC doesn't have problem with it but gcc is complaining. I'm wondering how other libs in boost are dealing with these problems.
Christian, FYI, I managed to compile & link with GCC 4.4 the pnm_test.cpp with the new IO, and it runs (but test fails, what's not important here): ... gcc.link bin/pnm_test.test/gcc-4.4.1/debug/pnm_test testing.capture-output bin/pnm_test.test/gcc-4.4.1/debug/pnm_test.run ====== BEGIN OUTPUT ====== Running 9 test cases... unknown location(0): fatal error in "read_image_info_using_string": std::exception: file_stream_device: failed to open file unknown location(0): fatal error in "read_image_test": std::exception: file_stream_device: failed to open file unknown location(0): fatal error in "read_and_convert_image_test": std::exception: file_stream_device: failed to open file unknown location(0): fatal error in "read_view_test": std::exception: file_stream_device: failed to open file unknown location(0): fatal error in "read_and_convert_view_test": std::exception: file_stream_device: failed to open file unknown location(0): fatal error in "write_view_test": std::exception: file_stream_device: failed to open file unknown location(0): fatal error in "stream_test": std::exception: file_stream_device: unexpected EOF unknown location(0): fatal error in "dynamic_image_test": std::exception: file_stream_device: failed to open file *** 8 failures detected in test suite "Master Test Suite" I had to modify Jamfile.v2 to use <library>/boost/test//boost_unit_test_framework/<link>static plus in #define BOOST_TEST_MAIN in pnm_test.cpp
For instance in my new gil::io lib I define some tags in pnm_tags.hpp as follows:
/// Defines type for image type property. struct pnm_image_type : property_base< uint32_t > { BOOST_STATIC_CONSTANT( type, _mono_asc = 1 ); // Monochrome ASCII encoding BOOST_STATIC_CONSTANT( type, _gray_asc = 2 ); // Gray level ASCII encoding BOOST_STATIC_CONSTANT( type, _color_asc = 3 ); // sRGB color ASCII encoding BOOST_STATIC_CONSTANT( type, _mono_bin = 4 ); // Monochrome binary encoding BOOST_STATIC_CONSTANT( type, _gray_bin = 5 ); // Gray level binary encoding BOOST_STATIC_CONSTANT( type, _color_bin = 6 ); // sRGB color binary encoding };
It looks OK to me. I double checked and this is what preprocessor generates for me: struct pnm_image_type : property_base< uint32_t > { static const type _mono_asc = 1; static const type _gray_asc = 2; static const type _color_asc = 3; static const type _mono_bin = 4; static const type _gray_bin = 5; static const type _color_bin = 6; }; Best regards, -- Mateusz Loskot, http://mateusz.loskot.net Charter Member of OSGeo, http://osgeo.org