Test install interface

Skip Android, iOS, and Framework builds simply because I can't get
them to work and don't want that holding up getting the rest of the
install tests merged.

Skip the Static DRM install test because there's a bug in the install
that needs to be fixed.

.github/workflows/ci.yml

@@ -101,6 +101,13 @@ jobs:
         files: ./build/coverage.out
         fail_ci_if_error: true
 
+    - name: Test Install Interface
+      if: matrix.platform.name != 'Android' && matrix.config.name != 'Frameworks' && matrix.config.name != 'iOS' && matrix.config.name != 'Static DRM'
+      shell: bash
+      run: |
+        cmake -S $GITHUB_WORKSPACE/test/install -B $GITHUB_WORKSPACE/test/install/build -DSFML_ROOT=$GITHUB_WORKSPACE/install -DCMAKE_VERBOSE_MAKEFILE=ON ${{matrix.platform.flags}} ${{matrix.config.flags}} ${{matrix.type.flags}}
+        cmake --build $GITHUB_WORKSPACE/test/install/build --config ${{ matrix.type.name == 'Debug' && 'Debug' || 'Release' }}
+
   format:
     name: Formatting on ${{ matrix.platform.name }}
     runs-on: ${{ matrix.platform.os }}

test/CMakeLists.txt

@@ -9,6 +9,8 @@ FetchContent_MakeAvailable(doctest)
 list(APPEND CMAKE_MODULE_PATH ${doctest_SOURCE_DIR}/scripts/cmake)
 include(doctest)
 
+add_subdirectory(install)
+
 add_library(sfml-test-main STATIC
     DoctestMain.cpp
     TestUtilities/SystemUtil.hpp

test/install/CMakeLists.txt

@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.16)
+project(test-sfml-install CXX)
+
+# This skips the find_package call when building via add_subdirectory since that will fail under those circumstances
+# It's a CMake 3.16-compatible replacement to PROJECT_IS_TOP_LEVEL
+# https://cmake.org/cmake/help/latest/variable/PROJECT_IS_TOP_LEVEL.html
+if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
+    if(NOT BUILD_SHARED_LIBS)
+        set(SFML_STATIC_LIBRARIES TRUE)
+    endif()
+    find_package(SFML 3.0.0 EXACT CONFIG REQUIRED COMPONENTS Graphics Network Audio)
+endif()
+
+add_executable(test-sfml-install Install.cpp)
+target_link_libraries(test-sfml-install PRIVATE SFML::Graphics SFML::Network SFML::Audio)

test/install/Install.cpp

@@ -0,0 +1,37 @@
+#include <SFML/Audio.hpp>
+#include <SFML/Graphics.hpp>
+#include <SFML/Network.hpp>
+
+// Instantiate some types from each module to test for linker issues. This program is not meant be ran.
+int main()
+{
+    // Audio
+    sf::InputSoundFile input_sound_file;
+    sf::Listener       listener;
+    sf::Music          music;
+    sf::Sound          sound;
+
+    // Graphics
+    sf::Color        color;
+    sf::Font         font;
+    sf::RenderWindow render_window;
+    sf::Sprite       sprite;
+    sf::Vertex       vertex;
+
+    // Network
+    sf::Ftp       ftp;
+    sf::Http      http;
+    sf::Packet    packet;
+    sf::UdpSocket udp_socket;
+
+    // System
+    sf::Angle           angle;
+    sf::FileInputStream file_input_stream;
+    sf::String          string;
+    sf::Time            time;
+
+    // Window
+    sf::Context   context;
+    sf::VideoMode video_mode;
+    sf::Window    window;
+}