first attempt at flatpak support

.gitignore

@@ -3,6 +3,7 @@ builds/
 cmake-build-debug/
 cmake-build-debug-coverage/
 imgui.ini
+.flatpak-builder/
 
 # dotfiles
 .idea/

.gitmodules

+[submodule "build-aux/shared-modules"]
+	path = build-aux/shared-modules
+	url = https://github.com/flathub/shared-modules.git

build-aux/com.fossgalaxy.fggl.demo.yml

+app-id: com.fossgalaxy.fggl.demo
+runtime: org.freedesktop.Platform.GL.default
+runtime-version: '21.08'
+sdk: org.freedesktop.Sdk
+command: fggl-demo
+modules:
+  - name: glfw
+    buildsystem: cmake-ninja
+    builddir: true
+    sources:
+      - type: archive
+        url: https://github.com/glfw/glfw/releases/download/3.3.4/glfw-3.3.4.zip
+        sha256: bbd2c42c660b725e9755eb417e40b373f0d4c03138c9b2e210d02cd308bd99cd
+    cleanup:
+      - /include
+      - /lib/pkgconfig
+  - modules/glm-0.9.9.8.json
+  - shared-modules/glew/glew.json
+  - shared-modules/glu/glu-9.json
+  - modules/googletest.yml
+  - name: fggl
+    buildsystem: cmake
+    sources:
+      - type: dir
+        path: ../

build-aux/modules/glm-0.9.9.8.json

+{
+    "name": "glm",
+    "buildsystem": "simple",
+    "build-commands": [
+        "mkdir -p /app/include/",
+        "cp -vr glm /app/include/",
+        "rm -v /app/include/glm/CMakeLists.txt",
+        "mkdir -p /app/lib/",
+        "cp -vr cmake /app/lib/"
+    ],
+    "sources": [
+        {
+            "type": "git",
+            "url": "https://github.com/g-truc/glm.git",
+            "tag": "0.9.9.8"
+        }
+    ],
+    "cleanup": [
+        "/include",
+        "/lib/cmake"
+    ]
+}

build-aux/modules/googletest.yml

+name: googletest
+buildsystem: cmake
+sources:
+  - type: archive
+    url: https://github.com/google/googletest/archive/refs/tags/release-1.11.0.zip
+    sha256: 353571c2440176ded91c2de6d6cd88ddd41401d14692ec1f99e35d013feda55a

shared-modules @ 0534d327

+Subproject commit 0534d3276b3966e87abacd163f757454b6fcf724

fggl/CMakeLists.txt

 configure_file(FgglConfig.h.in FgglConfig.h)
 
-set(CMAKE_CXX_CLANG_TIDY clang-tidy -checks=*,-llvmlibc-*,-fuchsia-*,-cppcoreguidelines-*,-llvm-*)
+find_program(CLANG_TIDY_FOUND clang-tidy)
+if ( CLANG_TIDY_FOUND )
+	set(CMAKE_CXX_CLANG_TIDY clang-tidy -checks=*,-llvmlibc-*,-fuchsia-*,-cppcoreguidelines-*,-llvm-*)
+endif()
 
 add_library(fggl fggl.cpp
 	ecs/ecs.cpp

tests/CMakeLists.txt

 find_package(Threads REQUIRED)
 
 # GTest Dependency
+find_package(GTest)
+if ( NOT GTest_FOUND )
 include(FetchContent)
 FetchContent_Declare(
   googletest
@@ -9,5 +11,6 @@ FetchContent_Declare(
 # For Windows: Prevent overriding the parent project's compiler/linker settings
 set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
 FetchContent_MakeAvailable(googletest)
+endif ()
 
 add_subdirectory(testfggl)