LÖVR submodule improvements;

- Allow parent CMake projects to expose symbols more easily
- Allow for custom plugins folder
- Include directories are always relative to lovr's source dir

Co-authored-by: Ilya Chelyadin <ilya77105@gmail.com>

CMakeLists.txt

@@ -34,8 +34,7 @@ option(LOVR_SYSTEM_OPENXR "Use the system-provided OpenXR" OFF)
 option(LOVR_BUILD_EXE "Build an executable (or an apk on Android)" ON)
 option(LOVR_BUILD_SHARED "Build a shared library (takes precedence over LOVR_BUILD_EXE)" OFF)
 option(LOVR_BUILD_BUNDLE "On macOS, build a .app bundle instead of a raw program" OFF)
-
-set(LOVR_SYMBOL_VISIBILITY "hidden" CACHE STRING "What should the C symbol visibility be? hidden reduces binary size, default lets other binaries use this one.")
+option(LOVR_BUILD_WITH_SYMBOLS "Build with C function symbols exposed" OFF)
 
 # Setup
 if(EMSCRIPTEN)
@@ -299,7 +298,9 @@ endif()
 # Plugins
 set(LOVR 1)
 link_libraries(${LOVR_LUA})
-file(GLOB LOVR_PLUGINS ${CMAKE_SOURCE_DIR}/plugins/*)
+if(NOT DEFINED LOVR_PLUGINS)
+  file(GLOB LOVR_PLUGINS ${CMAKE_SOURCE_DIR}/plugins/*)
+endif()
 foreach(PLUGIN_PATH ${LOVR_PLUGINS})
   if(IS_DIRECTORY ${PLUGIN_PATH} AND EXISTS ${PLUGIN_PATH}/CMakeLists.txt)
     get_filename_component(PLUGIN "${PLUGIN_PATH}" NAME)
@@ -338,10 +339,22 @@ if(NOT LOVR_BUILD_EXE)
   target_compile_definitions(lovr PUBLIC LOVR_OMIT_MAIN) # specifically for win32 WinMain
 endif()
 
-set_target_properties(lovr PROPERTIES C_VISIBILITY_PRESET ${LOVR_SYMBOL_VISIBILITY})
+if(LOVR_BUILD_WITH_SYMBOLS)
+  set_target_properties(lovr PROPERTIES C_VISIBILITY_PRESET "default")
+else()
+  set_target_properties(lovr PROPERTIES C_VISIBILITY_PRESET "hidden")
+endif()
+
 set_target_properties(lovr PROPERTIES C_STANDARD 11)
 set_target_properties(lovr PROPERTIES C_STANDARD_REQUIRED ON)
-target_include_directories(lovr PRIVATE src src/modules src/lib/stdatomic etc)
+
+target_include_directories(lovr PRIVATE
+  ${CMAKE_CURRENT_SOURCE_DIR}/src
+  ${CMAKE_CURRENT_SOURCE_DIR}/src/modules
+  ${CMAKE_CURRENT_SOURCE_DIR}/src/lib/stdatomic
+  ${CMAKE_CURRENT_SOURCE_DIR}/etc
+)
+
 target_link_libraries(lovr
   ${LOVR_GLFW}
   ${LOVR_LUA}

src/core/gpu.h

@@ -2,6 +2,8 @@
 #include <stdint.h>
 #include <stddef.h>
 
+#pragma once
+
 typedef struct gpu_buffer gpu_buffer;
 typedef struct gpu_texture gpu_texture;
 typedef struct gpu_sampler gpu_sampler;