--- captagent-6.2.11/configure.ac
+++ captagent-6.2.11.alpine/configure.ac
@@ -190,7 +190,7 @@
 echo "        the LDFLAGS to set its proper path.";
 AC_MSG_ERROR([Fatal:  libjson not found.])])])
 
-AC_CHECK_LIB(fl, yywrap, [ FLEX_LIBS="-lfl" ] , [AC_MSG_ERROR([$PACKAGE_NAME requires but cannot find libfl])])
+FLEX_LIBS="-lfl"
 
 AC_SUBST(PTHREAD_LIBS)
 AC_SUBST(DL_LIBS)