[cmake] Allow disabling AVX2 extensions

cmake/ConfigOptions.cmake

@@ -23,6 +23,8 @@ option(WITH_PROFILER "Compile profiler." OFF)
 option(WITH_GPROF "Compile with GProf profiler." OFF)
 
 option(WITH_SSE2 "Enable SSE2 optimization." OFF)
+cmake_dependent_option(WITH_AVX2 "Compile AVX2 optimizations" ON "WITH_SSE2"  OFF)
+
 option(WITH_NEON "Enable NEON optimization." OFF)
 
 option(WITH_JPEG "Use JPEG decoding." OFF)

include/config/config.h.in

@@ -22,6 +22,7 @@
 #cmakedefine WITH_PROFILER
 #cmakedefine WITH_GPROF
 #cmakedefine WITH_SSE2
+#cmakedefine WITH_AVX2
 #cmakedefine WITH_NEON
 #cmakedefine WITH_CUPS
 #cmakedefine WITH_JPEG

libfreerdp/primitives/CMakeLists.txt

@@ -87,9 +87,14 @@ set(PRIMITIVES_OPT_SRCS
 	${PRIMITIVES_SSSE3_SRCS}
 	${PRIMITIVES_SSE4_1_SRCS}
 	${PRIMITIVES_SSE4_2_SRCS}
-	${PRIMITIVES_AVX2_SRCS}
 	${PRIMITIVES_OPENCL_SRCS})
 
+if (WITH_AVX2)
+	list(APPEND PRIMITIVES_OPT_SRCS
+		${PRIMITIVES_AVX2_SRCS}
+	)
+endif()
+
 set(PRIMITIVES_SRCS ${PRIMITIVES_SRCS} ${PRIMITIVES_OPT_SRCS})
 
 include_directories(${CMAKE_CURRENT_SOURCE_DIR})
@@ -117,7 +122,7 @@ if(WITH_SSE2)
 		if (PRIMITIVES_SSE4_2_SRCS)
 			set_source_files_properties(${PRIMITIVES_SSE4_2_SRCS} PROPERTIES COMPILE_FLAGS "-msse4.2" )
 		endif()
-		if (PRIMITIVES_AVX2_SRCS)
+		if (PRIMITIVES_AVX2_SRCS AND WITH_AVX2)
 			set_source_files_properties(${PRIMITIVES_AVX2_SRCS} PROPERTIES COMPILE_FLAGS "-mavx2" )
 		endif()
 	endif()

libfreerdp/primitives/prim_copy.c

@@ -382,5 +382,7 @@ void primitives_init_copy(primitives_t* WINPR_RESTRICT prims)
 void primitives_init_copy_opt(primitives_t* prims)
 {
 	primitives_init_copy_sse41(prims);
+#if defined(WITH_AVX2)
 	primitives_init_copy_avx2(prims);
+#endif
 }

libfreerdp/primitives/prim_copy.h

@@ -39,6 +39,9 @@ pstatus_t generic_image_copy_no_overlap_memcpy(
     UINT32 flags);
 
 void primitives_init_copy_sse41(primitives_t* prims);
+
+#if defined(WITH_AVX2)
 void primitives_init_copy_avx2(primitives_t* prims);
+#endif
 
 #endif