c - Issue Including SDL2 and SDL2_image With CMake

Question

The Problem

• SDL2_image is unable to locate SDL.h from SDL2.
• References to SDL2 within the project files are able to locate SDL2 and SDL2_image.

CMakeLists.txt

# Minimum CMAKE Version Requirement
cmake_minimum_required(VERSION 3.20.3)

# Find Modules - SDL2
list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)

# Project Fields - TEST PLATFORM
project(library_test
    LANGUAGES C
    VERSION 0.1.0
)

set(SDL2_LIBRARY "C:/lib/SDL2-2.0.14/i686-w64-mingw32/bin")
set(SDL2_INCLUDE_DIR "C:/lib/SDL2-2.0.14/i686-w64-mingw32/include")

set(SDL2_IMAGE_LIBRARY "C:/lib/SDL2_image-2.0.5/i686-w64-mingw32/bin")
set(SDL2_IMAGE_INCLUDE_DIR "C:/lib/SDL2_image-2.0.5/i686-w64-mingw32/include")

find_package(SDL2 REQUIRED)
find_package(SDL2_image REQUIRED)

# C99 Standard Requirement
set(CMAKE_C_STANDARD 99)
set(CMAKE_C_STANDARD_REQUIRED YES)
set(CMAKE_C_EXTENSIONS OFF)

# RESET Library Content
add_library(reset STATIC)
target_link_libraries(reset SDL2::Main SDL2::Image)
target_include_directories(reset PUBLIC include/reset)
add_subdirectory(src)

# Test Platform Content
add_executable(test_platform test_platform/test_platform.c)
target_link_libraries(test_platform STATIC reset)

set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -lmingw32 -lSDL2main -lSDL2 -lSDL2_image -ggdb")

CMake Build Output

See the full output here:

[main] Building folder: reset 
[build] Starting build
[proc] Executing command: "C:\Program Files\CMake\bin\cmake.EXE" --build c:/C99/reset/build --config Debug --target all -j 6 --
[build] -- Configuring done
[build] -- Generating done
[build] -- Build files have been written to: C:/C99/reset/build
[build] Consolidate compiler generated dependencies of target reset
[build] [ 10%] Building C object CMakeFiles/reset.dir/src/data/provider.c.obj
[build] [ 20%] Building C object CMakeFiles/reset.dir/src/data/rrcon.c.obj
[build] [ 30%] Building C object CMakeFiles/reset.dir/src/internal/rsetup.c.obj
[build] [ 40%] Building C object CMakeFiles/reset.dir/src/spatial/rlevelmap.c.obj
[build] [ 50%] Building C object CMakeFiles/reset.dir/src/spatial/rtilemap.c.obj
[build] [ 60%] Building C object CMakeFiles/reset.dir/src/visual/rfocus.c.obj
[build] In file included from C:/C99/reset/include/reset/depn.h:12:0,
[build]                  from C:/C99/reset/include/reset/provider.h:13,
[build]                  from C:\C99\reset\src\data\provider.c:2:
[build] C:/lib/SDL2_image-2.0.5/i686-w64-mingw32/include/SDL2/SDL_image.h:27:17: fatal error: SDL.h: No such file or directory
[build]  #include "SDL.h"
[build]                  ^
[build] compilation terminated.
[build] In file included from C:/C99/reset/include/reset/depn.h:12:0,
[build]                  from C:/C99/reset/include/reset/rrcon.h:15,
[build]                  from C:\C99\reset\src\data\rrcon.c:4:
[build] C:/lib/SDL2_image-2.0.5/i686-w64-mingw32/include/SDL2/SDL_image.h:27:17: fatal error: SDL.h: No such file or directory
[build]  #include "SDL.h"
[build]                  ^
[build] compilation terminated.
[build] CMakeFiles\reset.dir\build.make:75: recipe for target 'CMakeFiles/reset.dir/src/data/provider.c.obj' failed
[build] mingw32-make.exe[2]: *** [CMakeFiles/reset.dir/src/data/provider.c.obj] Error 1
[build] mingw32-make.exe[2]: *** Waiting for unfinished jobs....
[build] CMakeFiles\reset.dir\build.make:90: recipe for target 'CMakeFiles/reset.dir/src/data/rrcon.c.obj' failed
[build] mingw32-make.exe[2]: *** [CMakeFiles/reset.dir/src/data/rrcon.c.obj] Error 1
[build] In file included from C:/C99/reset/include/reset/depn.h:12:0,
[build]                  from C:/C99/reset/include/reset/rsetup.h:11,
[build]                  from C:\C99\reset\src\internal\rsetup.c:2:
[build] C:/lib/SDL2_image-2.0.5/i686-w64-mingw32/include/SDL2/SDL_image.h:27:17: fatal error: SDL.h: No such file or directory
[build]  #include "SDL.h"
[build]                  ^
[build] compilation terminated.
[build] CMakeFiles\reset.dir\build.make:120: recipe for target 'CMakeFiles/reset.dir/src/internal/rsetup.c.obj' failed
[build] mingw32-make.exe[2]: *** [CMakeFiles/reset.dir/src/internal/rsetup.c.obj] Error 1
[build] In file included from C:/C99/reset/include/reset/depn.h:12:0,
[build]                  from C:/C99/reset/include/reset/rlevelmap.h:5,
[build]                  from C:\C99\reset\src\spatial\rlevelmap.c:2:
[build] C:/lib/SDL2_image-2.0.5/i686-w64-mingw32/include/SDL2/SDL_image.h:27:17: fatal error: SDL.h: No such file or directory
[build]  #include "SDL.h"
[build]                  ^
[build] compilation terminated.
[build] CMakeFiles\reset.dir\build.make:135: recipe for target 'CMakeFiles/reset.dir/src/spatial/rlevelmap.c.obj' failed
[build] mingw32-make.exe[2]: *** [CMakeFiles/reset.dir/src/spatial/rlevelmap.c.obj] Error 1
[build] In file included from C:/C99/reset/include/reset/depn.h:12:0,
[build]                  from C:/C99/reset/include/reset/rtilemap.h:9,
[build]                  from C:\C99\reset\src\spatial\rtilemap.c:2:
[build] C:/lib/SDL2_image-2.0.5/i686-w64-mingw32/include/SDL2/SDL_image.h:27:17: fatal error: SDL.h: No such file or directory
[build]  #include "SDL.h"
[build]                  ^
[build] compilation terminated.
[build] CMakeFiles\reset.dir\build.make:150: recipe for target 'CMakeFiles/reset.dir/src/spatial/rtilemap.c.obj' failed
[build] mingw32-make.exe[2]: *** [CMakeFiles/reset.dir/src/spatial/rtilemap.c.obj] Error 1
[build] In file included from C:/C99/reset/include/reset/depn.h:12:0,
[build]                  from C:/C99/reset/include/reset/rfocus.h:11,
[build]                  from C:\C99\reset\src\visual\rfocus.c:2:
[build] C:/lib/SDL2_image-2.0.5/i686-w64-mingw32/include/SDL2/SDL_image.h:27:17: fatal error: SDL.h: No such file or directory
[build]  #include "SDL.h"
[build]                  ^
[build] compilation terminated.
[build] CMakeFiles\reset.dir\build.make:165: recipe for target 'CMakeFiles/reset.dir/src/visual/rfocus.c.obj' failed
[build] mingw32-make.exe[2]: *** [CMakeFiles/reset.dir/src/visual/rfocus.c.obj] Error 1
[build] CMakeFiles\Makefile2:169: recipe for target 'CMakeFiles/reset.dir/all' failed
[build] mingw32-make.exe[1]: *** [CMakeFiles/reset.dir/all] Error 2
[build] Makefile:89: recipe for target 'all' failed
[build] mingw32-make.exe: *** [all] Error 2
[build] Build finished with exit code 2

The current CMake setup resolved previous issues I had with #include <SDL.h> causing a file not found error, but now this occurs within SDL_image as it tries to access SDL. Note that the source of the errors is SDL_image.h as it attempts to #include "SDL.h".

Currently, the SDL packages are found using some FindSDL2 cmake files that I found on this page: https://edgarluque.com/blog/sdl2-cmake

This is also the first page I found that actually resolved any of the previous errors I have had. I am on windows instead of linux so there are naturally issues.

I did try adding -l compiler arguments for the SDL components but these seemingly had no effect.

Attempted Solutions

I tried changing the last line in the CMake_lists.txt file (compiler flags):

set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -lmingw32 -lSDL2main -lSDL2 -lSDL2_image -ggdb -IC:/lib/SDL2-2.0.14/i686-w64-mingw32/include/SDL2")

and this produced a different error:

[main] Building folder: reset 
[build] Starting build
[proc] Executing command: "C:\Program Files\CMake\bin\cmake.EXE" --build c:/C99/reset/build --config Debug --target all -j 6 --
[build] -- Configuring done
[build] -- Generating done
[build] -- Build files have been written to: C:/C99/reset/build
[build] Consolidate compiler generated dependencies of target reset
[build] [ 10%] Building C object CMakeFiles/reset.dir/src/data/provider.c.obj
[build] [ 20%] Building C object CMakeFiles/reset.dir/src/data/rrcon.c.obj
[build] [ 30%] Building C object CMakeFiles/reset.dir/src/data/rvector.c.obj
[build] [ 40%] Building C object CMakeFiles/reset.dir/src/internal/rsetup.c.obj
[build] [ 50%] Building C object CMakeFiles/reset.dir/src/spatial/rlevelmap.c.obj
[build] [ 60%] Building C object CMakeFiles/reset.dir/src/spatial/rtilemap.c.obj
[build] [ 70%] Building C object CMakeFiles/reset.dir/src/visual/rfocus.c.obj
[build] [ 80%] Linking C static library libreset.a
[build] [ 80%] Built target reset
[build] Consolidate compiler generated dependencies of target test_platform
[build] [ 90%] Building C object CMakeFiles/test_platform.dir/test_platform/test_platform.c.obj
[build] [100%] Linking C executable test_platform.exe
[build] c:/mingw/bin/../lib/gcc/mingw32/6.3.0/../../../../mingw32/bin/ld.exe: cannot find -lSDL2main
[build] c:/mingw/bin/../lib/gcc/mingw32/6.3.0/../../../../mingw32/bin/ld.exe: cannot find -lSDL2
[build] c:/mingw/bin/../lib/gcc/mingw32/6.3.0/../../../../mingw32/bin/ld.exe: cannot find -lSDL2_image
[build] CMakeFiles\test_platform.dir/objects.a(test_platform.c.obj): In function `main':
[build] C:/C99/reset/test_platform/test_platform.c:18: multiple definition of `main'
[build] c:/mingw/bin/../lib/gcc/mingw32/6.3.0/../../../libmingw32.a(main.o):(.text.startup+0x0): first defined here
[build] c:/mingw/bin/../lib/gcc/mingw32/6.3.0/../../../../mingw32/bin/ld.exe: cannot find -lSTATIC
[build] c:/mingw/bin/../lib/gcc/mingw32/6.3.0/../../../../mingw32/bin/ld.exe: cannot find C:/lib/SDL2_image-2.0.5/i686-w64-mingw32/bin: Permission denied
[build] c:/mingw/bin/../lib/gcc/mingw32/6.3.0/../../../../mingw32/bin/ld.exe: cannot find C:/lib/SDL2-2.0.14/i686-w64-mingw32/bin: Permission denied
[build] collect2.exe: error: ld returned 1 exit status
[build] CMakeFiles\test_platform.dir\build.make:101: recipe for target 'test_platform.exe' failed
[build] mingw32-make.exe[2]: *** [test_platform.exe] Error 1
[build] CMakeFiles\Makefile2:195: recipe for target 'CMakeFiles/test_platform.dir/all' failed
[build] mingw32-make.exe[1]: *** [CMakeFiles/test_platform.dir/all] Error 2
[build] Makefile:89: recipe for target 'all' failed
[build] mingw32-make.exe: *** [all] Error 2
[build] Build finished with exit code 2

Here is also the test_platform.c file, because it is relevant to the new error:

//#define SDL_MAIN_HANDLED

#include "depn.h"
#include "rsetup.h"
#include "rrcon.h"
#include "provider.h"
#include "rfocus.h"
#include "rvector.h"
#include "rtilemap.h"
#include "rlevelmap.h"

#undef main

/// Main Function

int main ( int argc, char ** argv )
{
    fprintf ( stderr, "Received %d argument%s:\n", argc, argc == 1 ? "" : "s" );

    forsi ( argc ) fprintf ( stderr, "\t%s\n", argv [ ix ] );

    CFG_WIN cfg =
    {
        1920, 1080,
        SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
        "Reset"
    };

    r_sdlset(); // SDL2 module init

    DATA_WIN display = r_dispset ( cfg );

    RRCON rrcon = rrcon_inst ( display.renderer, TEXTURE );
    register_directory ( "tile" );
    rrcon_import ( rrcon, "grass", "grass.png" );

    RTILEMAP tilemap = rtilemap_static ( );
//    RTILEMAP tilemap = rtilemap_dynamic ( 72, 72 );
    RTILE tile = rtile_inst ( "grass" );

    VEC2U pos = { 0, 0 };
    VEC2U pos2 = { 63, 31 };

    rtilemap_set ( tilemap, tile, pos );
    rtilemap_set ( tilemap, tile, pos2 );

//    RFOCUS focus = rfocus_inst ( F_FLAT_TILEMAP );
//
//    focus -> tilemap = tilemap;

    VEC2I tilemap_start = { 30, 0 };

    SDL_Event ev;

    while ( 1 )
    {
        if ( SDL_WaitEvent ( &ev ) )
        {
            if ( ev.type == SDL_QUIT )
            {
                rrcon_clr ( rrcon );

                SDL_DestroyRenderer ( display.renderer );
                SDL_DestroyWindow ( display.window );
                SDL_Quit ();
                IMG_Quit ();

                return EXIT_SUCCESS;
            }
        }

        // SDL_SetRenderDrawColor ( display.renderer, 0, 0, 0, 255 );
        SDL_RenderClear ( display.renderer );

        rtilemap_render_tiles ( tilemap, rrcon, tilemap_start, 1.0 );

        SDL_RenderPresent ( display.renderer );
    }

    return 0;
}

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