Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt
+++ CMakeLists.txt
@@ -52,6 +52,7 @@
 
 include(MakefileFunctions)
 include(SingleMultiSource)
+include(CheckFunctionExists)
 find_package(YACC)
 find_package(TCL)
 
@@ -72,6 +73,7 @@
     set(ENDIAN "little")
   endif()
 endif()
+check_function_exists(re_comp HAVE_RE_COMP)
 
 add_subdirectory(tools)
 # Shortcut for the path to the fpcmp executable