Day 79/100 100 Days of Code

This session was all about creating a Mac executable file and move the resources inside it.

I updated the CMakeLists.txt file to create a MacOS bundle file during the build process and copy the app's resources into the container.

add_subdirectory("${PROJECT_SOURCE_DIR}/modules/SDL")
add_subdirectory("${PROJECT_SOURCE_DIR}/modules/SDL_ttf")
add_subdirectory("${PROJECT_SOURCE_DIR}/modules/cpplocate")

find_package(SDL3_ttf REQUIRED CONFIG REQUIRED COMPONENTS SDL3_ttf)
find_package(SDL3 REQUIRED CONFIG REQUIRED COMPONENTS SDL3)
find_package(liblocate REQUIRED CONFIG REQUIRED COMPONENTS liblocate)

file(GLOB_RECURSE MINI_APP "./modules/jumpcalculations/*")
file(GLOB APP_FONT "./fonts/Montserrat-VariableFont_wght.ttf")

add_executable(    ${PROJECT_NAME} MACOSX_BUNDLE ./src/main.c
                ./src/app.h ./src/app.c ./src/resourcelocator.h
                ./src/resourcelocator.c ./src/text.h ./src/text.c
                ${MINI_APP} ${APP_FONT})

foreach(APPFILE ${MINI_APP})

    # Get the folder and the file name
    file(RELATIVE_PATH RES_PATH_NAME "${CMAKE_CURRENT_SOURCE_DIR}" ${APPFILE})

    # keep only the name of the folder
    get_filename_component(NEW_FILE_PATH_NAME ${RES_PATH_NAME} DIRECTORY)

    # Add current file and directory to the resources folder
    set_property(SOURCE ${APPFILE} PROPERTY MACOSX_PACKAGE_LOCATION "Resources/${NEW_FILE_PATH_NAME}")

endforeach(APPFILE)

# Get the folder and the file name
file(RELATIVE_PATH RES_PATH_NAME "${CMAKE_CURRENT_SOURCE_DIR}" ${APP_FONT})

# keep only the name of the folder
get_filename_component(NEW_FILE_PATH_NAME ${RES_PATH_NAME} DIRECTORY)

# Add current file and directory to the resources folder
set_property(SOURCE ${APP_FONT} PROPERTY MACOSX_PACKAGE_LOCATION "Resources/${NEW_FILE_PATH_NAME}")

I added one more conditional statement check for the Fortran mini-app submodule.

if(NOT EXISTS "${PROJECT_SOURCE_DIR}/modules/jumpcalculations/app/main.f90")
    message(FATAL_ERROR "Jump calculations mini app was not downloaded properly. GIT_SUBMODULE was turned off or failed. Please update submodules and try again.")
endif()

I then modified the FindResource function to locate the bundle path rather than the executable path.

char* FindResource(char *fileLocation)
{
    char *execPath; 
    unsigned int lengthValue = 100;
    getBundlePath(&execPath, &lengthValue);
    printf("Path %s\n", execPath);

    strcat(execPath, fileLocation);
    return execPath;
}

The application now finds the font inside the application successfully with a minor change.

// This is the path from the bundle file to the font file
fontResource.location = "/Contents/Resources/fonts/Montserrat-VariableFont_wght.ttf";