build(linux): add homebrew support (#2667)

cmake/compile_definitions/linux.cmake

@@ -117,14 +117,42 @@ elseif(NOT LIBDRM_FOUND)
 endif()
 
 # evdev
-pkg_check_modules(PC_EVDEV libevdev REQUIRED)
-find_path(EVDEV_INCLUDE_DIR libevdev/libevdev.h
-        HINTS ${PC_EVDEV_INCLUDE_DIRS} ${PC_EVDEV_INCLUDEDIR})
-find_library(EVDEV_LIBRARY
-        NAMES evdev libevdev)
+pkg_check_modules(PC_EVDEV libevdev)
+if(PC_EVDEV_FOUND)
+    find_path(EVDEV_INCLUDE_DIR libevdev/libevdev.h
+            HINTS ${PC_EVDEV_INCLUDE_DIRS} ${PC_EVDEV_INCLUDEDIR})
+    find_library(EVDEV_LIBRARY
+            NAMES evdev libevdev)
+else()
+    include(ExternalProject)
+
+    set(LIBEVDEV_VERSION libevdev-1.13.2)
+
+    ExternalProject_Add(libevdev
+            URL http://www.freedesktop.org/software/libevdev/${LIBEVDEV_VERSION}.tar.xz
+            PREFIX ${LIBEVDEV_VERSION}
+            CONFIGURE_COMMAND <SOURCE_DIR>/configure --prefix=<INSTALL_DIR>
+            BUILD_COMMAND "make"
+            INSTALL_COMMAND ""
+    )
+
+    ExternalProject_Get_Property(libevdev SOURCE_DIR)
+    message(STATUS "libevdev source dir: ${SOURCE_DIR}")
+    set(EVDEV_INCLUDE_DIR "${SOURCE_DIR}")
+
+    ExternalProject_Get_Property(libevdev BINARY_DIR)
+    message(STATUS "libevdev binary dir: ${BINARY_DIR}")
+    set(EVDEV_LIBRARY "${BINARY_DIR}/libevdev/.libs/libevdev.a")
+
+    # compile libevdev before sunshine
+    set(SUNSHINE_TARGET_DEPENDENCIES ${SUNSHINE_TARGET_DEPENDENCIES} libevdev)
+endif()
+
 if(EVDEV_INCLUDE_DIR AND EVDEV_LIBRARY)
     include_directories(SYSTEM ${EVDEV_INCLUDE_DIR})
     list(APPEND PLATFORM_LIBRARIES ${EVDEV_LIBRARY})
+else()
+    message(FATAL_ERROR "Couldn't find or fetch libevdev")
 endif()
 
 # vaapi
@@ -226,7 +254,7 @@ else()
     message(STATUS "Tray icon disabled")
 endif()
 
-if (${SUNSHINE_TRAY} EQUAL 0 AND SUNSHINE_REQUIRE_TRAY)
+if(${SUNSHINE_ENABLE_TRAY} AND ${SUNSHINE_TRAY} EQUAL 0 AND SUNSHINE_REQUIRE_TRAY)
     message(FATAL_ERROR "Tray icon is required")
 endif()
 
@@ -253,5 +281,4 @@ list(APPEND PLATFORM_LIBRARIES
 
 include_directories(
         SYSTEM
-        "${CMAKE_SOURCE_DIR}/third-party/nv-codec-headers/include"
         "${CMAKE_SOURCE_DIR}/third-party/glad/include")

cmake/dependencies/common.cmake

@@ -25,7 +25,8 @@ if(NOT DEFINED FFMPEG_PREPARED_BINARIES)
         set(FFMPEG_PLATFORM_LIBRARIES mfplat ole32 strmiids mfuuid vpl)
     elseif(UNIX AND NOT APPLE)
         set(FFMPEG_PLATFORM_LIBRARIES numa va va-drm va-x11 vdpau X11)
-        if(CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64")
+        # TODO: remove mfx, it's not used and deprecated
+        if(CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" AND NOT SUNSHINE_BUILD_HOMEBREW)
             list(APPEND FFMPEG_PLATFORM_LIBRARIES mfx)
             set(CPACK_DEB_PLATFORM_PACKAGE_DEPENDS "libmfx1,")
             set(CPACK_RPM_PLATFORM_PACKAGE_REQUIRES "intel-mediasdk >= 22.3.0,")

cmake/prep/options.cmake

@@ -20,14 +20,13 @@ option(CUDA_INHERIT_COMPILE_OPTIONS
         your IDE throws errors about unknown flags after running cmake." ON)
 
 if(UNIX)
-    # technically, the homebrew build could be on linux as well... no idea if it would actually work
     option(SUNSHINE_BUILD_HOMEBREW
             "Enable a Homebrew build." OFF)
+    option(SUNSHINE_CONFIGURE_HOMEBREW
+            "Configure Homebrew formula. Recommended to use with SUNSHINE_CONFIGURE_ONLY" OFF)
 endif ()
 
 if(APPLE)
-    option(SUNSHINE_CONFIGURE_HOMEBREW
-            "Configure macOS Homebrew formula. Recommended to use with SUNSHINE_CONFIGURE_ONLY" OFF)
     option(SUNSHINE_CONFIGURE_PORTFILE
             "Configure macOS Portfile. Recommended to use with SUNSHINE_CONFIGURE_ONLY" OFF)
     option(SUNSHINE_PACKAGE_MACOS

cmake/prep/special_package_configuration.cmake

@@ -1,11 +1,14 @@
-if (APPLE)
+if(UNIX)
+    if(${SUNSHINE_CONFIGURE_HOMEBREW})
+        configure_file(packaging/sunshine.rb sunshine.rb @ONLY)
+    endif()
+endif()
+
+if(APPLE)
     if(${SUNSHINE_CONFIGURE_PORTFILE})
         configure_file(packaging/macos/Portfile Portfile @ONLY)
     endif()
-    if(${SUNSHINE_CONFIGURE_HOMEBREW})
-        configure_file(packaging/macos/sunshine.rb sunshine.rb @ONLY)
-    endif()
-elseif (UNIX)
+elseif(UNIX)
     # configure the .desktop file
     if(${SUNSHINE_BUILD_APPIMAGE})
         configure_file(packaging/linux/AppImage/sunshine.desktop sunshine.desktop @ONLY)

cmake/targets/common.cmake

@@ -2,6 +2,9 @@
 # this file will also load platform specific macros
 
 add_executable(sunshine ${SUNSHINE_TARGET_FILES})
+foreach(dep ${SUNSHINE_TARGET_DEPENDENCIES})
+    add_dependencies(sunshine ${dep})  # compile these before sunshine
+endforeach()
 
 # platform specific target definitions
 if(WIN32)