Adding FreeBSD build support.

Author: LadySerenaKitty

CMakeLists.txt

@@ -130,7 +130,7 @@ if(PLATFORM_ANDROID)
     add_subdirectory(Android/HelloAR)
 endif()
 
-if(NOT ${DILIGENT_BUILD_SAMPLE_BASE_ONLY} AND (D3D11_SUPPORTED OR D3D12_SUPPORTED OR GL_SUPPORTED OR GLES_SUPPORTED))
+if(NOT PLATFORM_FREEBSD AND NOT ${DILIGENT_BUILD_SAMPLE_BASE_ONLY} AND (D3D11_SUPPORTED OR D3D12_SUPPORTED OR GL_SUPPORTED OR GLES_SUPPORTED))
     add_subdirectory(UnityPlugin)
 endif()
 

SampleBase/CMakeLists.txt

@@ -72,6 +72,11 @@ elseif(PLATFORM_ANDROID)
         include/SampleApp.hpp
     )
 elseif(PLATFORM_LINUX)
+    if(PLATFORM_FREEBSD)
+        if(EXISTS /usr/local/include)
+            include_directories(/usr/local/include)
+        endif()
+    endif()
     set(SOURCE 
         src/Linux/InputControllerLinux.cpp
         src/Linux/SampleAppLinux.cpp
@@ -189,7 +194,14 @@ if(PLATFORM_UNIVERSAL_WINDOWS)
 elseif(PLATFORM_ANDROID)
     target_link_libraries(Diligent-SampleBase PRIVATE GLESv3 PUBLIC native_app_glue)
 elseif(PLATFORM_LINUX)
-    target_link_libraries(Diligent-SampleBase PRIVATE XCBKeySyms GL X11)
+    if(PLATFORM_FREEBSD)
+        find_package(OpenGL REQUIRED)
+        find_package(X11 REQUIRED)
+    else()
+        set(OPENGL_gl_LIBRARY GL)
+        set(X11_LIBRARIES X11)
+    endif()
+    target_link_libraries(Diligent-SampleBase PRIVATE XCBKeySyms ${OPENGL_gl_LIBRARY} ${X11_LIBRARIES})
 elseif(PLATFORM_MACOS OR PLATFORM_IOS)
 
 endif()

Samples/CMakeLists.txt

@@ -22,7 +22,7 @@ endif()
 
 if(PLATFORM_WIN32 AND D3D11_SUPPORTED AND D3D12_SUPPORTED)
     if(TARGET Diligent-TextureLoader)
-	    add_subdirectory(Asteroids)
+        add_subdirectory(Asteroids)
     else()
         message("Unable to find Diligent-TextureLoader target: Asteroids demo will be disabled")
     endif()

Samples/GLFWDemo/CMakeLists.txt

@@ -83,6 +83,12 @@ if(MSVC)
     )
 endif()
 
+if(PLATFORM_FREEBSD)
+    if(EXISTS /usr/local/include)
+        include_directories(/usr/local/include)
+    endif()
+endif()
+
 if(PLATFORM_WIN32 OR PLATFORM_LINUX)
     # Copy assets to target folder
     add_custom_command(TARGET GLFWDemo POST_BUILD

Tutorials/Tutorial00_HelloLinux/CMakeLists.txt

@@ -2,6 +2,12 @@ cmake_minimum_required (VERSION 3.6)
 
 project(Tutorial00_HelloLinux CXX)
 
+if(PLATFORM_FREEBSD)
+    if(EXISTS /usr/local/include)
+        include_directories(/usr/local/include)
+    endif()
+endif()
+
 set(SOURCE
     src/Tutorial00_HelloLinux.cpp
 )
@@ -22,11 +28,22 @@ set_target_properties(Tutorial00_HelloLinux PROPERTIES
 )
 
 target_link_libraries(Tutorial00_HelloLinux PRIVATE Diligent-BuildSettings)
-
 if(GL_SUPPORTED)
-    target_link_libraries(Tutorial00_HelloLinux PRIVATE Diligent-GraphicsEngineOpenGL-shared GL X11)
+    if(PLATFORM_FREEBSD)
+        find_package(OpenGL REQUIRED)
+        find_package(X11 REQUIRED)
+    else()
+        set(OPENGL_gl_LIBRARY GL)
+        set(X11_LIBRARIES X11)
+    endif()
+    target_link_libraries(Tutorial00_HelloLinux PRIVATE Diligent-GraphicsEngineOpenGL-shared ${OPENGL_gl_LIBRARY} ${X11_LIBRARIES})
 endif()
 
 if(VULKAN_SUPPORTED)
-    target_link_libraries(Tutorial00_HelloLinux PRIVATE Diligent-GraphicsEngineVk-shared xcb)
+    if(PLATFORM_FREEBSD)
+        find_library(XCB NAMES xcb REQUIRED)
+    else()
+        set(XCB xcb)
+    endif()
+    target_link_libraries(Tutorial00_HelloLinux PRIVATE Diligent-GraphicsEngineVk-shared ${XCB})
 endif()