--- CMakeLists.txt.orig	2021-09-07 15:26:53 UTC
+++ CMakeLists.txt
@@ -6,8 +6,6 @@ include(GNUInstallDirs)
 if(MSVC)
   set(COMPILE_DEFINITIONS /O2 /fp:fast)
   set(COMPILE_OPTIONS )
-else()
-  set(COMPILE_OPTIONS -Ofast)
 endif()
 
 #####################
@@ -59,7 +57,7 @@ else()
   target_compile_definitions(SoundTouch PRIVATE SOUNDTOUCH_FLOAT_SAMPLES)
 endif()
 
-if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(armv7.*|armv8.*)$")
+if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(armv7.*|armv8.*|aarch64.*)$")
   set(NEON_CPU ON)
 else()
   set(NEON_CPU OFF)
@@ -68,9 +66,14 @@ endif()
 option(NEON "Use ARM Neon SIMD instructions if in ARM CPU" ON)
 if(${NEON} AND ${NEON_CPU})
   target_compile_definitions(SoundTouch PRIVATE SOUNDTOUCH_USE_NEON)
-  target_compile_options(SoundTouch PRIVATE -mfpu=neon)
 endif()
 
+find_package(OpenMP)
+option(OPENMP "Use parallel multicore calculation through OpenMP" ON)
+if(OPENMP AND OPENMP_FOUND)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
+endif()
+
 install(
   FILES
     include/BPMDetect.h
@@ -105,6 +108,9 @@ if(SOUNDSTRETCH)
   target_compile_definitions(soundstretch PRIVATE ${COMPILE_DEFINITIONS})
   target_compile_options(soundstretch PRIVATE ${COMPILE_OPTIONS})
   target_link_libraries(soundstretch PRIVATE SoundTouch)
+  if(INTEGER_SAMPLES)
+    target_compile_definitions(soundstretch PRIVATE SOUNDTOUCH_INTEGER_SAMPLES)
+  endif()
 
   install(TARGETS soundstretch
     DESTINATION bin