Add support for powerpc64le systems (#276)

Author: madscientist159

build/CompilerAndLinker.cmake

@@ -20,6 +20,8 @@ elseif(CMAKE_GENERATOR_PLATFORM MATCHES "^[Aa][Rr][Mm]64$")
     set(DIRECTX_ARCH arm64)
 elseif(CMAKE_GENERATOR_PLATFORM MATCHES "^[Aa][Rr][Mm]64EC$")
     set(DIRECTX_ARCH arm64ec)
+elseif(CMAKE_GENERATOR_PLATFORM MATCHES "^[Pp][Pp][Cc]64|powerpc64|powerpc64le")
+    set(DIRECTX_ARCH powerpc64)
 elseif(CMAKE_VS_PLATFORM_NAME_DEFAULT MATCHES "^[Ww][Ii][Nn]32$")
     set(DIRECTX_ARCH x86)
 elseif(CMAKE_VS_PLATFORM_NAME_DEFAULT MATCHES "^[Xx]64$")
@@ -30,9 +32,13 @@ elseif(CMAKE_VS_PLATFORM_NAME_DEFAULT MATCHES "^[Aa][Rr][Mm]64$")
     set(DIRECTX_ARCH arm64)
 elseif(CMAKE_VS_PLATFORM_NAME_DEFAULT MATCHES "^[Aa][Rr][Mm]64EC$")
     set(DIRECTX_ARCH arm64ec)
+elseif(CMAKE_VS_PLATFORM_NAME_DEFAULT MATCHES "^[Pp][Pp][Cc]64|powerpc64|powerpc64le")
+    set(DIRECTX_ARCH powerpc64)
 elseif(NOT (DEFINED DIRECTX_ARCH))
     if(CMAKE_SYSTEM_PROCESSOR MATCHES "[Aa][Rr][Mm]64|aarch64|arm64")
         set(DIRECTX_ARCH arm64)
+    elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "[Pp][Pp][Cc]64|powerpc64|powerpc64le")
+        set(DIRECTX_ARCH powerpc64)
     else()
         set(DIRECTX_ARCH x64)
     endif()
@@ -41,6 +47,8 @@ endif()
 #--- Determines host architecture
 if(CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "[Aa][Rr][Mm]64|aarch64|arm64")
     set(DIRECTX_HOST_ARCH arm64)
+elseif(CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "[Pp][Pp][Cc]64|powerpc64|powerpc64le")
+    set(DIRECTX_HOST_ARCH powerpc64)
 else()
     set(DIRECTX_HOST_ARCH x64)
 endif()
@@ -96,6 +104,9 @@ if(XBOX_CONSOLE_TARGET STREQUAL "scarlett")
     list(APPEND COMPILER_SWITCHES $<IF:$<CXX_COMPILER_ID:MSVC>,/favor:AMD64 /arch:AVX2,-march=znver2>)
 elseif(XBOX_CONSOLE_TARGET MATCHES "xboxone|durango")
     list(APPEND COMPILER_SWITCHES  $<IF:$<CXX_COMPILER_ID:MSVC>,/favor:AMD64 /arch:AVX,-march=btver2>)
+elseif(${DIRECTX_ARCH} MATCHES "^powerpc64")
+    list(APPEND COMPILER_DEFINES NO_WARN_X86_INTRINSICS)
+    list(APPEND COMPILER_SWITCHES -m64 -mcpu=power9 -maltivec)
 elseif(NOT (${DIRECTX_ARCH} MATCHES "^arm"))
     if((${DIRECTX_ARCH} STREQUAL "x86") OR (CMAKE_SIZEOF_VOID_P EQUAL 4))
         set(ARCH_SSE2 $<$<CXX_COMPILER_ID:MSVC,Intel>:/arch:SSE2> $<$<NOT:$<CXX_COMPILER_ID:MSVC,Intel>>:-msse2>)