cmake: Fix CMP0077 policy warnings.

Fixes #11629

CMakeLists.txt

@@ -13,7 +13,6 @@ list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/Modules)
 
 add_definitions(-D__STDC_CONSTANT_MACROS)
 
-
 if(${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
 	set(CLANG ON)
 	message("Clang enabled")
@@ -27,17 +26,17 @@ endif()
 # Detect CPU from CMAKE configuration. Toolchains should set this up
 if(CMAKE_SYSTEM_PROCESSOR)
 	if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "^arm")
-		set(ARM ON)
-			if(UNIX AND NOT APPLE)
-				execute_process(COMMAND cat /proc/cpuinfo OUTPUT_VARIABLE OUTSTR)
-				string(FIND "${OUTSTR}" "ODROID-XU" pos)
-				if(NOT (pos LESS 0))
-					add_compile_options(-mfloat-abi=hard -marm -mtune=cortex-a15.cortex-a7 -mcpu=cortex-a15 -fomit-frame-pointer)
-					set(ARM_NO_VULKAN ON)
-				endif()
+		set(ARM_DEVICE ON)
+		if(UNIX AND NOT APPLE)
+			execute_process(COMMAND cat /proc/cpuinfo OUTPUT_VARIABLE OUTSTR)
+			string(FIND "${OUTSTR}" "ODROID-XU" pos)
+			if(NOT (pos LESS 0))
+				add_compile_options(-mfloat-abi=hard -marm -mtune=cortex-a15.cortex-a7 -mcpu=cortex-a15 -fomit-frame-pointer)
+				set(ARM_NO_VULKAN ON)
 			endif()
+		endif()
 		if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "^armv7")
-			set(ARMV7 ON)
+			set(ARMV7_DEVICE ON)
 			add_compile_options(-mfpu=neon)
 			# Horrifying workaround for bug in android cmake stuff for asm files
 			if(ANDROID)
@@ -48,22 +47,19 @@ if(CMAKE_SYSTEM_PROCESSOR)
 		set(ARM64 ON)
 		add_definitions(-DARM64)
 	elseif(${CMAKE_SYSTEM_PROCESSOR} MATCHES "^amd64" OR ${CMAKE_SYSTEM_PROCESSOR} MATCHES "^x86_64" OR ${CMAKE_SYSTEM_PROCESSOR} MATCHES "^AMD64")
-		set(X86 ON)
-		set(X86_64 ON)
+		set(X86_DEVICE ON)
+		set(X86_64_DEVICE ON)
 	elseif(${CMAKE_SYSTEM_PROCESSOR} MATCHES "^x86" OR ${CMAKE_SYSTEM_PROCESSOR} MATCHES "i.86")
-		set(X86 ON)
+		set(X86_DEVICE ON)
 	elseif(${CMAKE_SYSTEM_PROCESSOR} MATCHES "^mips")
-		set(MIPS ON)
+		set(MIPS_DEVICE ON)
 	else()
 		message("Unknown CMAKE_SYSTEM_PROCESSOR: ${CMAKE_SYSTEM_PROCESSOR}")
 	endif()
 endif()
 
 include(ccache)
 
-# Remove soon?
-set(USE_FFMPEG ON)
-
 # the libraries in the ffmpeg/ directory are not compatible with mingw
 if(MINGW AND NOT DEFINED USE_SYSTEM_FFMPEG)
 	set(USE_SYSTEM_FFMPEG ON)
@@ -93,29 +89,20 @@ if(ANDROID OR WIN32 OR (UNIX AND NOT APPLE AND NOT ARM_NO_VULKAN))
 	set(VULKAN ON)
 endif()
 
-if(NOT DEFINED HEADLESS)
-	set(HEADLESS OFF)
-endif()
-
 if(GOLD)
 	add_definitions(-DGOLD)
 	message("Gold Build")
 else()
 	message("Normal Build")
 endif()
 
-# Doesn't link on some platforms
-#if(NOT DEFINED UNITTEST)
-#	set(UNITTEST OFF)
-#endif()
-
 # User-editable options (go into CMakeCache.txt)
 # :: Processors
-option(ARMV7 "Set to ON if targeting an ARMv7 processor" ${ARMV7})
-option(ARM "Set to ON if targeting an ARM processor" ${ARM})
-option(MIPS "Set to ON if targeting a MIPS processor" ${MIPS})
-option(X86 "Set to ON if targeting an X86 processor" ${X86})
-option(X86_64 "Set to ON if targeting an X86_64 processor" ${X86_64})
+option(ARMV7 "Set to ON if targeting an ARMv7 processor" ${ARMV7_DEVICE})
+option(ARM "Set to ON if targeting an ARM processor" ${ARM_DEVICE})
+option(MIPS "Set to ON if targeting a MIPS processor" ${MIPS_DEVICE})
+option(X86 "Set to ON if targeting an X86 processor" ${X86_DEVICE})
+option(X86_64 "Set to ON if targeting an X86_64 processor" ${X86_64_DEVICE})
 # :: Environments
 option(USING_EGL "Set to ON if target environment uses EGL" ${USING_EGL})
 option(USING_FBDEV "Set to ON if target environment uses fbdev (eg. Pandora)" ${USING_FBDEV})
@@ -130,7 +117,7 @@ option(UNITTEST "Set to ON to generate the unittest target" ${UNITTEST})
 option(SIMULATOR "Set to ON when targeting an x86 simulator of an ARM platform" ${SIMULATOR})
 option(LIBRETRO "Set to ON to generate the libretro target" OFF)
 # :: Options
-option(USE_FFMPEG "Build with FFMPEG support" ${USE_FFMPEG})
+option(USE_FFMPEG "Build with FFMPEG support" ON)
 option(USE_DISCORD "Build with Discord support" ON)
 option(USE_SYSTEM_SNAPPY "Dynamically link against system snappy" ${USE_SYSTEM_SNAPPY})
 option(USE_SYSTEM_FFMPEG "Dynamically link against system FFMPEG" ${USE_SYSTEM_FFMPEG})