diff --git a/CMakeLists.txt b/CMakeLists.txt
index 503d13e..4bce470 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -83,6 +83,7 @@ if (PCRE_FOUND)
     src/extmatch.c
     src/extmatch.h
   )
+  set(HAVE_PCRE 1)
 endif ()
 
 set(INTERFACE_FILES
diff --git a/src/config.h.in b/src/config.h.in
index 194430a..5928b0b 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -2,6 +2,7 @@
 # define CONFIG_H_IN_
 
 #cmakedefine ENABLE_NLS @ENABLE_NLS@
+#cmakedefine HAVE_PCRE @HAVE_PCRE@
 
 # define LOCALEDIR "${LOCALEDIR}"
 # define PACKAGE "${PROJECT_NAME}"