diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1dc5bbab..71ef31a7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -481,6 +481,11 @@ if (HAVE_STRPTIME)
   check_c_source_runs("${STRPTIME_TEST_SOURCE}" STRPTIME_WORKS)
 endif ()
 
+try_compile(HAVE___FUNC__
+  ${CMAKE_CURRENT_BINARY_DIR}
+  ${CMAKE_CURRENT_SOURCE_DIR}/cmake/tests/test___func__.c
+)
+
 # TCP Fast Open.
 if (NOT ENABLE_TCP_FAST_OPEN)
   message(WARNING "TCP Fast Open disabled.")
diff --git a/cmake/include/cmakeconfig.h.in b/cmake/include/cmakeconfig.h.in
index 0a3ee804..d3635633 100644
--- a/cmake/include/cmakeconfig.h.in
+++ b/cmake/include/cmakeconfig.h.in
@@ -213,6 +213,8 @@
 #cmakedefine HAVE_TARGET_ENDIANNESS
 #cmakedefine TARGET_IS_BIG_ENDIAN
 
+#cmakedefine HAVE___FUNC__		1
+
 #ifdef HAVE___FUNC__
 #define __FUNC__ __func__
 #else
diff --git a/cmake/tests/test___func__.c b/cmake/tests/test___func__.c
new file mode 100644
index 00000000..6613c98b
--- /dev/null
+++ b/cmake/tests/test___func__.c
@@ -0,0 +1,4 @@
+int main (int ac, char *av[])
+{
+	char *s = __func__;
+}