diff --git a/CMakeLists.txt b/CMakeLists.txt
index 84aeb73..20aa28f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -342,6 +342,17 @@ elseif (HAVE_SNDIO)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DUSE_SNDIO")
   endif()
 
+elseif (APPLE)
+  find_package(Portaudio REQUIRED)
+  if(PORTAUDIO_FOUND)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DUSE_PORTAUDIO")
+  endif()
+
+  find_package(hidapi REQUIRED)
+  if(HIDAPI_FOUND)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DUSE_CM108")
+  endif()
+
 elseif (NOT WIN32 AND NOT CYGWIN)
   find_package(Portaudio REQUIRED)
   if(PORTAUDIO_FOUND)
@@ -367,7 +378,10 @@ add_subdirectory(data)
 # external libraries
 add_subdirectory(${CUSTOM_GEOTRANZ_DIR})
 add_subdirectory(${CUSTOM_REGEX_DIR})
-add_subdirectory(${CUSTOM_HIDAPI_DIR})
+if(NOT APPLE)
+  # Mac builds use the hidapi library, not custom local files
+  add_subdirectory(${CUSTOM_HIDAPI_DIR})
+endif()
 add_subdirectory(${CUSTOM_MISC_DIR})
 
 # direwolf source code and utilities
diff --git a/cmake/modules/Findhidapi.cmake b/cmake/modules/Findhidapi.cmake
new file mode 100644
index 0000000..163c8c2
--- /dev/null
+++ b/cmake/modules/Findhidapi.cmake
@@ -0,0 +1,44 @@
+# - Try to find hidapi
+#
+#  HIDAPI_FOUND - system has hidapi
+#  HIDAPI_LIBRARIES - location of the library for hidapi
+#  HIDAPI_INCLUDE_DIRS - location of the include files for hidapi
+
+set(HIDAPI_ROOT_DIR
+  "${HIDAPI_ROOT_DIR}"
+  CACHE
+  PATH
+  "Directory to search for hidapi")
+
+# no need to check pkg-config
+
+find_path(HIDAPI_INCLUDE_DIRS
+  NAMES
+  hidapi.h
+  PATHS
+  /usr/local/include
+  /usr/include
+  /opt/local/include
+  HINTS
+  ${HIDAPI_ROOT_DIR}
+  PATH_SUFFIXES
+  hidapi
+  )
+
+find_library(HIDAPI_LIBRARIES
+  NAMES
+  hidapi
+  PATHS
+  /usr/local/lib
+  /usr/lib
+  /usr/lib64
+  /opt/local/lib
+  HINTS
+  ${HIDAPI_ROOT_DIR}
+  )
+
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(HIDAPI DEFAULT_MSG HIDAPI_INCLUDE_DIRS HIDAPI_LIBRARIES)
+
+mark_as_advanced(HIDAPI_INCLUDE_DIRS HIDAPI_LIBRARIES)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index a2c3963..7a05ecc 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -10,15 +10,21 @@ include_directories(
   ${PORTAUDIO_INCLUDE_DIRS}
   ${SNDIO_INCLUDE_DIRS}
   ${CUSTOM_GEOTRANZ_DIR}
-  ${CUSTOM_HIDAPI_DIR}
   )
 
 if(WIN32 OR CYGWIN)
   include_directories(
+    ${CUSTOM_HIDAPI_DIR}
     ${CUSTOM_REGEX_DIR}
   )
 endif()
 
+if(APPLE)
+  include_directories(
+    ${HIDAPI_INCLUDE_DIRS}
+  )
+endif()
+
 
 # direwolf
 list(APPEND direwolf_SOURCES
@@ -131,6 +137,7 @@ if(LINUX)
   else() # macOS freebsd
     list(APPEND direwolf_SOURCES
       audio_portaudio.c
+      cm108.c
       )
     if(USE_MACOS_DNSSD)
       list(APPEND direwolf_SOURCES
@@ -469,10 +476,11 @@ endif()
 
 # List USB audio adapters than can use GPIO for PTT.
 # Originally for Linux only (using udev).
-# Version 1.7 adds it for Windows.  Needs hidapi library.
+# Version 1.7 adds it for Windows.  Uses local hidapi code.
+# Post-1.7 adds it for Mac. Uses hidapi library.
 
 # cm108
-if(UDEV_FOUND OR WIN32 OR CYGWIN)
+if(UDEV_FOUND OR WIN32 OR CYGWIN OR HIDAPI_FOUND)
   list(APPEND cm108_SOURCES
     cm108.c
     textcolor.c
@@ -496,6 +504,12 @@ if(UDEV_FOUND OR WIN32 OR CYGWIN)
       )
   endif()
 
+  if (APPLE)
+    target_link_libraries(cm108
+      ${HIDAPI_LIBRARIES}
+      )
+  endif()
+
   if (WIN32 OR CYGWIN)
     target_link_libraries(cm108
       ${HIDAPI_LIBRARIES}
@@ -568,6 +582,6 @@ install(TARGETS ttcalc DESTINATION ${INSTALL_BIN_DIR})
 install(TARGETS kissutil DESTINATION ${INSTALL_BIN_DIR})
 install(TARGETS tnctest DESTINATION ${INSTALL_BIN_DIR})
 install(TARGETS appserver DESTINATION ${INSTALL_BIN_DIR})
-if(UDEV_FOUND OR WIN32 OR CYGWIN)
+if(UDEV_FOUND OR WIN32 OR CYGWIN OR HIDAPI_FOUND)
   install(TARGETS cm108 DESTINATION ${INSTALL_BIN_DIR})
 endif()