diff --git a/src/lcflags.h b/src/lcflags.h
new file mode 100644
index 0000000..0946c0c
--- /dev/null
+++ b/src/lcflags.h
@@ -0,0 +1,86 @@
+
+FLG_ENTRY(AUTH_NONE                       )
+FLG_ENTRY(AUTH_BASIC                      )
+FLG_ENTRY(AUTH_DIGEST                     )
+FLG_ENTRY(AUTH_GSSNEGOTIATE               )
+FLG_ENTRY(AUTH_NTLM                       )
+FLG_ENTRY(AUTH_DIGEST_IE                  )
+FLG_ENTRY(AUTH_NTLM_WB                    )
+FLG_ENTRY(AUTH_ONLY                       )
+FLG_ENTRY(AUTH_ANY                        )
+FLG_ENTRY(AUTH_ANYSAFE                    )
+
+FLG_ENTRY(SSH_AUTH_ANY                    )
+FLG_ENTRY(SSH_AUTH_NONE                   )
+FLG_ENTRY(SSH_AUTH_PUBLICKEY              )
+FLG_ENTRY(SSH_AUTH_PASSWORD               )
+FLG_ENTRY(SSH_AUTH_HOST                   )
+FLG_ENTRY(SSH_AUTH_KEYBOARD               )
+FLG_ENTRY(SSH_AUTH_AGENT                  )
+FLG_ENTRY(SSH_AUTH_DEFAULT                )
+
+FLG_ENTRY(GSSAPI_DELEGATION_NONE          )
+FLG_ENTRY(GSSAPI_DELEGATION_POLICY_FLAG   )
+FLG_ENTRY(GSSAPI_DELEGATION_FLAG          )
+
+/* Bitmasks for CURLOPT_HTTPAUTH and CURLOPT_PROXYAUTH options */
+FLG_ENTRY(USESSL_NONE                     )
+FLG_ENTRY(USESSL_TRY                      )
+FLG_ENTRY(USESSL_CONTROL                  )
+FLG_ENTRY(USESSL_ALL                      )
+FLG_ENTRY(SSLOPT_ALLOW_BEAST              )
+
+/* parameter for the CURLOPT_FTP_SSL_CCC option */
+FLG_ENTRY(FTPSSL_CCC_NONE                 )
+FLG_ENTRY(FTPSSL_CCC_PASSIVE              )
+FLG_ENTRY(FTPSSL_CCC_ACTIVE               )
+
+/* parameter for the CURLOPT_FTPSSLAUTH option */
+FLG_ENTRY(FTPAUTH_DEFAULT                 )
+FLG_ENTRY(FTPAUTH_SSL                     )
+FLG_ENTRY(FTPAUTH_TLS                     )
+
+/* parameter for the CURLOPT_FTP_CREATE_MISSING_DIRS option */
+FLG_ENTRY(FTP_CREATE_DIR_NONE             )
+FLG_ENTRY(FTP_CREATE_DIR                  )
+FLG_ENTRY(FTP_CREATE_DIR_RETRY            )
+FLG_ENTRY(FTP_CREATE_DIR_LAST             )
+
+/* parameter for the CURLOPT_FTP_FILEMETHOD option */
+FLG_ENTRY(FTPMETHOD_DEFAULT               )
+FLG_ENTRY(FTPMETHOD_MULTICWD              )
+FLG_ENTRY(FTPMETHOD_NOCWD                 )
+FLG_ENTRY(FTPMETHOD_SINGLECWD             )
+
+/* bitmask defines for CURLOPT_HEADEROPT */
+FLG_ENTRY(HEADER_UNIFIED                  )
+FLG_ENTRY(HEADER_SEPARATE                 )
+
+/* CURLPROTO_ defines are for the CURLOPT_*PROTOCOLS options */
+FLG_ENTRY(PROTO_HTTP                      )
+FLG_ENTRY(PROTO_HTTPS                     )
+FLG_ENTRY(PROTO_FTP                       )
+FLG_ENTRY(PROTO_FTPS                      )
+FLG_ENTRY(PROTO_SCP                       )
+FLG_ENTRY(PROTO_SFTP                      )
+FLG_ENTRY(PROTO_TELNET                    )
+FLG_ENTRY(PROTO_LDAP                      )
+FLG_ENTRY(PROTO_LDAPS                     )
+FLG_ENTRY(PROTO_DICT                      )
+FLG_ENTRY(PROTO_FILE                      )
+FLG_ENTRY(PROTO_TFTP                      )
+FLG_ENTRY(PROTO_IMAP                      )
+FLG_ENTRY(PROTO_IMAPS                     )
+FLG_ENTRY(PROTO_POP3                      )
+FLG_ENTRY(PROTO_POP3S                     )
+FLG_ENTRY(PROTO_SMTP                      )
+FLG_ENTRY(PROTO_SMTPS                     )
+FLG_ENTRY(PROTO_RTSP                      )
+FLG_ENTRY(PROTO_RTMP                      )
+FLG_ENTRY(PROTO_RTMPT                     )
+FLG_ENTRY(PROTO_RTMPE                     )
+FLG_ENTRY(PROTO_RTMPTE                    )
+FLG_ENTRY(PROTO_RTMPS                     )
+FLG_ENTRY(PROTO_RTMPTS                    )
+FLG_ENTRY(PROTO_GOPHER                    )
+FLG_ENTRY(PROTO_ALL                       )
diff --git a/src/lcurl.c b/src/lcurl.c
index 6da9769..45251bb 100644
--- a/src/lcurl.c
+++ b/src/lcurl.c
@@ -2,6 +2,7 @@
 #include "lceasy.h"
 #include "lcerror.h"
 #include "lchttppost.h"
+#include "lcutils.h"
 
 /*export*/
 #ifdef _WIN32
@@ -32,7 +33,7 @@ static int lcurl_version(lua_State *L){
 }
 
 static int lcurl_version_info(lua_State *L){
-  const char **p;
+  const char * const*p;
   curl_version_info_data *data = curl_version_info(CURLVERSION_NOW);
 
   lua_newtable(L);
@@ -71,8 +72,6 @@ static int lcurl_version_info(lua_State *L){
   return 1;
 }
 
-
-
 static const struct luaL_Reg lcurl_functions[] = {
   {"error",           lcurl_error_new        },
   {"httppost",        lcurl_hpost_new        },
@@ -91,6 +90,15 @@ static const struct luaL_Reg lcurl_functions_safe[] = {
   {NULL,NULL}
 };
 
+static const lcurl_const_t lcurl_flags[] = {
+
+#define FLG_ENTRY(N) { #N, CURL##N },
+#include "lcflags.h"
+#undef FLG_ENTRY
+
+  {NULL, 0}
+};
+
 static volatile int LCURL_INIT = 0;
 
 static const char* LCURL_REGISTRY = "LCURL Registry";
@@ -117,6 +125,8 @@ static int luaopen_lcurl_(lua_State *L, const struct luaL_Reg *func){
 
   lua_remove(L, -2); /* registry */
 
+  lcurl_util_set_const(L, lcurl_flags);
+
   return 1;
 }