Index: MultiSource/Benchmarks/Prolangs-C/archie-client/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C/archie-client/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C/archie-client/CMakeLists.txt
@@ -4,6 +4,8 @@
 set(PARALLEL_DIRS)
 
 set(LEVEL ../../../..)
+include(CheckFunctionExists)
+check_function_exists(re_comp HAVE_RE_COMP)
 if(DEFINED HAVE_RE_COMP)
   set(PROG archie)
 endif()
Index: MultiSource/Benchmarks/Prolangs-C/plot2fig/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C/plot2fig/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C/plot2fig/CMakeLists.txt
@@ -4,6 +4,8 @@
 set(PARALLEL_DIRS)
 
 set(LEVEL ../../../..)
+include(CheckFunctionExists)
+check_function_exists(re_comp HAVE_RE_COMP)
 if(DEFINED HAVE_RE_COMP)
   set(PROG plot2fig)
 endif()