Index: head/databases/mysql57-client/files/patch-cmake_os_FreeBSD.cmake
===================================================================
--- head/databases/mysql57-client/files/patch-cmake_os_FreeBSD.cmake	(revision 489182)
+++ head/databases/mysql57-client/files/patch-cmake_os_FreeBSD.cmake	(revision 489183)
@@ -1,31 +1,32 @@
 --- cmake/os/FreeBSD.cmake.orig	2018-10-04 05:48:22 UTC
 +++ cmake/os/FreeBSD.cmake
-@@ -30,6 +30,20 @@ IF(NOT FORCE_UNSUPPORTED_COMPILER)
+@@ -30,12 +30,26 @@ IF(NOT FORCE_UNSUPPORTED_COMPILER)
      IF(NOT HAVE_SUPPORTED_CLANG_VERSION)
        MESSAGE(FATAL_ERROR "Clang 3.3 or newer is required!")
      ENDIF()
+-  ELSE()
+-    MESSAGE(FATAL_ERROR "Unsupported compiler!")
 +    CHECK_C_SOURCE_RUNS("
 +      int main()
 +      {
 +        return (__clang_major__ >= 4);
 +      }" I386_ATOMIC_BUILTINS)
 +    IF((CMAKE_SYSTEM_PROCESSOR MATCHES "i386") AND (NOT I386_ATOMIC_BUILTINS))
 +      SET(HAVE_GCC_ATOMIC_BUILTINS CACHE  INTERNAL "")
 +    ENDIF()
 +  ELSEIF(CMAKE_COMPILER_IS_GNUCC)
 +    EXECUTE_PROCESS(COMMAND ${CMAKE_C_COMPILER} -dumpversion
 +                    OUTPUT_VARIABLE GCC_VERSION)
 +    IF(GCC_VERSION VERSION_LESS 4.4)
 +      MESSAGE(FATAL_ERROR "GCC 4.4 or newer is required!")
 +    ENDIF()
-   ELSE()
-     MESSAGE(FATAL_ERROR "Unsupported compiler!")
    ENDIF()
-@@ -38,4 +52,6 @@ ENDIF()
+ ENDIF()
+ 
  # Should not be needed any more, but kept for easy resurrection if needed
  #   #Legacy option, maybe not needed anymore , taken as is from autotools build
  #   ADD_DEFINITIONS(-DNET_RETRY_COUNT=1000000)
 -
 +# For GCC maybe it's also good idea to use
 +#   ADD_DEFINITIONS(-D_GNU_SOURCE)
 +