diff --git a/CMake/FLTKConfig.cmake.in b/CMake/FLTKConfig.cmake.in index e2de914..c0bee05 100644 --- a/CMake/FLTKConfig.cmake.in +++ b/CMake/FLTKConfig.cmake.in @@ -37,17 +37,100 @@ set (FLTK_USE_FILE ${CMAKE_CURRENT_LIST_DIR}/UseFLTK.cmake) set (FLTK_INCLUDE_DIR "${FLTK_INCLUDE_DIRS}") -if (CMAKE_CROSSCOMPILING) - find_file(FLUID_PATH +if(CMAKE_CROSSCOMPILING) + + # Find a fluid executable on the build host to be able to build fluid programs + + find_program(FLTK_FLUID_HOST NAMES fluid fluid.exe PATHS ENV PATH + NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH ) - add_executable(fluid IMPORTED) - set_target_properties(fluid - PROPERTIES IMPORTED_LOCATION ${FLUID_PATH} - ) - set (FLTK_FLUID_EXECUTABLE ${FLUID_PATH}) -else () - set (FLTK_FLUID_EXECUTABLE fluid) -endif (CMAKE_CROSSCOMPILING) + + if(FLTK_FLUID_HOST) + + if(0) # Experimental: currently not used + # Import a special 'fluid' target called 'fluid-host' (fltk::fluid-host) + # Note: this is "the same as" the CMake variable FLTK_FLUID_EXECUTABLE + add_executable(fluid-host IMPORTED) + set_target_properties(fluid-host + PROPERTIES IMPORTED_LOCATION ${FLTK_FLUID_HOST} + ) + add_executable(fltk::fluid-host ALIAS fluid-host) + set(FLTK_FLUID_EXECUTABLE fltk::fluid-host) + + else() + + set(FLTK_FLUID_EXECUTABLE "${FLTK_FLUID_HOST}") + + endif() + + else() # fluid not found on build host + + message(STATUS "FLTKConfig.cmake (cross-compiling): fluid not found on the build host") + # note: this assigns "FLTK_FLUID_HOST-NOTFOUND" and running fluid will fail + set(FLTK_FLUID_EXECUTABLE "${FLTK_FLUID_HOST}") + + endif() + +else(CMAKE_CROSSCOMPILING) + + if(FLTK_CREATE_COMPATIBILITY_ALIASES) + + function(_fltk_make_alias target from) + if(TARGET ${from} AND NOT TARGET ${target}) + # message(STATUS "FLTKConfig.cmake - create alias: ${target} from ${from}") + + # promote imported target to global visibility (CMake < 3.18 only) + if(CMAKE_VERSION VERSION_LESS "3.18") + set_target_properties(${from} PROPERTIES IMPORTED_GLOBAL TRUE) + endif() + + get_target_property(ttype ${from} TYPE) + if(ttype STREQUAL "EXECUTABLE") + add_executable(${target} ALIAS ${from}) + else() + add_library(${target} ALIAS ${from}) + endif() + endif() + endfunction(_fltk_make_alias target) + + if(NOT TARGET fltk::fltk) + message(FATAL "FLTKConfig.cmake: target fltk::fltk does not exist!") + endif() + + _fltk_make_alias(fltk fltk::fltk) + _fltk_make_alias(fltk-shared fltk::fltk-shared) + + _fltk_make_alias(fluid fltk::fluid) + _fltk_make_alias(fluid-cmd fltk::fluid-cmd) + + _fltk_make_alias(fltk-options fltk::options) + _fltk_make_alias(fltk-options-cmd fltk::options-cmd) + + foreach(target cairo forms gl images jpeg png z) + _fltk_make_alias(fltk_${target} fltk::${target}) + _fltk_make_alias(fltk_${target}-shared fltk::${target}-shared) + endforeach() + + endif() # Create aliases ... + + # set FLTK_FLUID_EXECUTABLE: try to use the fltk::target name if it + # exists and fall back to 'fluid-cmd' or 'fluid' if not. This will + # eventually call the build host's fluid if found in the users's PATH + + if(TARGET fltk::fluid-cmd) # Windows only + set(FLTK_FLUID_EXECUTABLE fltk::fluid-cmd) + elseif(TARGET fltk::fluid) + set(FLTK_FLUID_EXECUTABLE fltk::fluid) + elseif(WIN32) + set(FLTK_FLUID_EXECUTABLE fluid-cmd) + else() + set(FLTK_FLUID_EXECUTABLE fluid) + endif() + +endif(CMAKE_CROSSCOMPILING) + +# Debug: should be commented out +# message(STATUS "FLTKConfig.cmake: FLTK_FLUID_EXECUTABLE = '${FLTK_FLUID_EXECUTABLE}'")