[CMake] config-specific compiler definitions don't work properly

[Xi Yang]

Hi:


It solved the compiler definitions. However, when I come to work with library, it came with further errors.


In my project, we have an extra configuration named GraphicDebug. I want to have my project to use different library files which are compiled using different options. Firstly I tried this:


add_library(foo_lib_use STATIC IMPORTED)
set_property(TARGET foo_lib_use
    PROPERTY IMPORTED_LOCATION_GRAPHICDEBUG libfoo_gdbg.a
)


It failed to set foo_lib_use:


Demo/Demo: juze_lib_use-NOTFOUND


I guessed the XXX_<Config> don't work for customized configs, then I tried $<$<>> way:


add_library(foo_lib_use STATIC IMPORTED)
set_property(TARGET foo_lib_use
    PROPERTY IMPORTED_LOCATION
        $<$<CONFIG:Debug>:         libfoo_dbg.a>
        $<$<CONFIG:GraphicDebug>:  libfoo_gdbg.a>
        $<$<CONFIG:Release>:       libfoo_rel.a>
        $<$<CONFIG:RelWithDebInfo>: libfoo_reldbg.a>
)


However, the foo_lib_use is not properly set according to configuration, it was instead set to the whole string with all $<$<>> stuffs. This is the line in generated build.make:


Demo/Demo: $<$<CONFIG:Debug>:;/home/yangxi/software/JUZE/lib/libjuce_dbg.a>;$<$<CONFIG:GraphicDebug>:;/home/yangxi/software/JUZE/lib/libjuce_gdbg.a>;$<$<CONFIG:Release>:;/home/yangxi/software/JUZE/lib/libjuce_rel.a>;$<$<CONFIG:RelWithDebInfo>:/home/yangxi/software/JUZE/lib/libjuce_reldbg.a>


So, how can I properly set the library according to configuration? Thanks!


在 2015-07-17 21:42:50，"Petr Kmoch" <petr.kmoch at gmail.com> 写道：

Hi.


Looking at the documentation ( http://www.cmake.org/cmake/help/v3.3/manual/cmake-properties.7.html#properties-on-directories , http://www.cmake.org/cmake/help/v3.3/manual/cmake-properties.7.html#properties-on-targets ), you will find that neither the directory property nor the target property COMPILE_DEFINITIONS has per-configuration variants. They do support generator expressions, however, so you could use these instead:


  set_property(DIRECTORY PROPERTY COMPILE_DEFINITIONS $<$<CONFIG:Debug>:FOO> $<$<CONFIG:Release>:BAR>)


Petr




On Fri, Jul 17, 2015 at 3:08 PM, Xi Yang <jiandingzhe at 163.com> wrote:

Hi everyone!


I'm trying to use config-specific definitions, but it seems doesn't work in VS2013.


This is the CMakeLists.txt:


cmake_minimum_required(VERSION 3.0)


set_property(DIRECTORY PROPERTY COMPILE_DEFINITIONS_DEBUG
    FOO
)


set_property(DIRECTORY PROPERTY COMPILE_DEFINITIONS_RELEASE
    BAR
)


add_executable(main main.cpp)
set_target_properties(main
    PROPERTIES
        COMPILE_DEFINITIONS_DEBUG   FOO
        COMPILE_DEFINITIONS_RELEASE BAR
)


Both target property and directory property are tried. And this is the source code main.cpp:


#ifdef FOO
#error got foo
#endif


#ifdef BAR
#error got bar
#endif


int main(int argc, char** argv)
{
    return 0;
}


If the definitions are sent to compilers, it should die with foo on Debug config, and die with bar on Release config. However, it finished compilation on both Debug and Release.


I also have a look at the command line parameters of the Debug and Release config, it don't have "/D FOO" and "/D BAR".


Thanks for a lot!



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