diff --git a/CMakeLists.txt b/CMakeLists.txt
index aaf07e2a1..7cfd54e3e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,6 +30,9 @@ CHECK_SYMBOL_EXISTS (sleep "unistd.h" HAVE_SLEEP)
 CHECK_SYMBOL_EXISTS (usleep "unistd.h" HAVE_USLEEP)
 CHECK_SYMBOL_EXISTS (access "unistd.h" HAVE_ACCESS)
 ENDIF(HAVE_UNISTD_H)
+CHECK_SYMBOL_EXISTS (strlcpy "string.h" HAVE_STRLCPY)
+CHECK_SYMBOL_EXISTS (strlcat "string.h" HAVE_STRLCAT)
+CHECK_SYMBOL_EXISTS (slprintf "string.h" HAVE_SLPRINTF)
 CHECK_SYMBOL_EXISTS (strcasecmp "string.h" HAVE_STRCASECMP)
 CHECK_SYMBOL_EXISTS (strncasecmp "string.h" HAVE_STRNCASECMP)
 CHECK_SYMBOL_EXISTS (_strlwr "string.h" HAVE__STRLWR)