diff -ruN ../cef_binary_3.3071.1649.g98725e6_linux64_minimal.orig/cmake/cef_variables.cmake ./cmake/cef_variables.cmake
--- ../cef_binary_3.3071.1649.g98725e6_linux64_minimal.orig/cmake/cef_variables.cmake	2017-07-19 17:50:42.000000000 +1200
+++ ./cmake/cef_variables.cmake	2020-10-02 14:38:13.438964000 +1300
@@ -16,7 +16,7 @@
 if("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin")
   set(OS_MACOSX 1)
   set(OS_POSIX 1)
-elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
+elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "FreeBSD")
   set(OS_LINUX 1)
   set(OS_POSIX 1)
 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Windows")
diff -ruN ../cef_binary_3.3071.1649.g98725e6_linux64_minimal.orig/include/base/cef_build.h ./include/base/cef_build.h
--- ../cef_binary_3.3071.1649.g98725e6_linux64_minimal.orig/include/base/cef_build.h	2017-07-19 17:50:42.000000000 +1200
+++ ./include/base/cef_build.h	2020-10-02 14:43:29.023692000 +1300
@@ -47,7 +47,7 @@
 #ifndef OS_MACOSX
 #define OS_MACOSX 1
 #endif
-#elif defined(__linux__)
+#elif defined(__linux__) || defined(__FreeBSD__)
 #ifndef OS_LINUX
 #define OS_LINUX 1
 #endif