Compilation error: no member named 'default_textured_vertex_shader_id' in 'struct GPU_Context'

[NODESPLIT]

Never had an issue compiling on this machine but just had this error compiling latest on master:

In file included from /Users/erroneous/sdl-gpu/src/renderer_OpenGL_1.c:23:
/Users/erroneous/sdl-gpu/src/renderer_GL_common.inl:1819:26: error: no member named 'default_textured_vertex_shader_id' in 'struct GPU_Context'
        target->context->default_textured_vertex_shader_id = v;
        ~~~~~~~~~~~~~~~  ^
/Users/erroneous/sdl-gpu/src/renderer_GL_common.inl:1820:26: error: no member named 'default_textured_fragment_shader_id' in 'struct GPU_Context'
        target->context->default_textured_fragment_shader_id = f;
        ~~~~~~~~~~~~~~~  ^
/Users/erroneous/sdl-gpu/src/renderer_GL_common.inl:1860:26: error: no member named 'default_untextured_vertex_shader_id' in 'struct GPU_Context'
        target->context->default_untextured_vertex_shader_id = v;
        ~~~~~~~~~~~~~~~  ^
/Users/erroneous/sdl-gpu/src/renderer_GL_common.inl:1861:26: error: no member named 'default_untextured_fragment_shader_id' in 'struct GPU_Context'
        target->context->default_untextured_fragment_shader_id = f;
        ~~~~~~~~~~~~~~~  ^
2 warnings and 4 errors generated.
make[2]: *** [src/CMakeFiles/SDL_gpu.dir/renderer_OpenGL_1.c.o] Error 1
make[1]: *** [src/CMakeFiles/SDL_gpu.dir/all] Error 2
make: *** [all] Error 2

Here's what CMake says while generating the makefiles:

CMake Warning:
  No source or binary directory provided.  Both will be assumed to be the
  same as the current working directory, but note that this warning will
  become a fatal error in future CMake releases.


-- The C compiler identification is AppleClang 11.0.3.11030032
-- The CXX compiler identification is AppleClang 11.0.3.11030032
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc - works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ - works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
Writing version header for v0.12.0
 Using Apple defaults.
-- Found SDL2: /usr/local/lib/libSDL2.dylib
CMake Warning at CMakeLists.txt:182 (message):
  SDL2MAIN_LIBRARY is NOTFOUND


-- Found OpenGL: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/OpenGL.framework
 Using bundled version of GLEW
-- Found PkgConfig: /usr/local/bin/pkg-config (found version "0.29.2")
-- Checking for module 'libstbi'
--   No package 'libstbi' found
 Using bundled version of stb-image
-- Checking for module 'libstbi_write'
--   No package 'libstbi_write' found
 Using bundled version of stb-image-write
-- Configuring done
CMake Warning (dev):
  Policy CMP0068 is not set: RPATH settings on macOS do not affect
  install_name.  Run "cmake --help-policy CMP0068" for policy details.  Use
  the cmake_policy command to set the policy and suppress this warning.

  For compatibility with older versions of CMake, the install_name fields for
  the following targets are still affected by RPATH settings:

   SDL_gpu_shared

This warning is for project developers.  Use -Wno-dev to suppress it.

-- Generating done
-- Build files have been written to: /Users/erroneous/sdl-gpu

SDL2MAIN_LIBRARY is NOTFOUND is a little odd as I'm pretty sure I've got SDL2 installed, especially considering it says -- Found SDL2: /usr/local/lib/libSDL2.dylib above it.

I'm on macOS Catalina 10.15.3, I'm also having trouble getting shaders to render in SDL_gpu right now but that's probably unrelated. This isn't a halting issue for me as I've got a working install already set up on here, wanted to make a note of it here though.

Thanks :)

[grimfang4]

The compile error is concerning, but the NOTFOUND warning should be fine. I don't think SDL uses SDL2main on Macs.

[pmp-p]

i get the same error on pclinuxos with gcc 10.2.0 or clang 10.0.1

[cosmo-ray]

I had the same error,
It seems the error was happening because the makefile include /usr/include/SDL_gpu.h before the repository SDL_gpu.h.
So using an old SDL_gpu.h to compile SDL_gpu made the compilation was failing.
A simple way to avoid the problem is simply to uninstall SDL_gpu when compiling it. (or use the patch from my PR)