We have a link problem on Linux when using GDAL transiently. If we link the unit tests for a library which depends on GDAL, i.e. an executable which transiently depends on GDAL through our library, we get the following linker error:
/usr/bin/ld: libs/ioimage/tests/CMakeFiles/tests_unit_ioimage.dir/unit/writers/test_geoTiffWriter.cpp.o: undefined reference to symbol 'dlerror@@GLIBC_2.2.5' /usr/bin/ld: /lib/x86_64-linux-gnu/libdl.so.2: error adding symbols: DSO missing from command line We need to add -ldl to the linker line after GDAL in order to resolve the linker problem. This can be done when adding the property INTERFACE_LINK_LIBRARIES "dl" to the GDAL::GDAL imported target in GDAL-targets-release.cmake (this is a generated file); apparently it is not enough to add dl to the IMPORTED_LINK_DEPENDENT_LIBRARIES_RELEASE property. Does GDAL depend publicly on dl? We do not find the proper way to patch GDAL's CMake code to add that dependency in the generated config file. Thanks Javier .___ ._ ..._ .. . ._. .___ .. __ . _. . __.. ... .... ._ .__ Entre dos pensamientos racionales hay infinitos pensamientos irracionales.
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