- Daniel Egger provided a patch that allows you to disable proxy support in

libcurl to somewhat reduce the size of the binary. Run configure
  --disable-proxy.

CHANGES

@@ -6,6 +6,11 @@
 
                                   Changelog
 
+Daniel Stenberg (29 Sep 2008)
+- Daniel Egger provided a patch that allows you to disable proxy support in
+  libcurl to somewhat reduce the size of the binary. Run configure
+  --disable-proxy.
+  
 Daniel Fandrich (29 Sep 2008)
 - Moved all signal-based name resolution timeout handling into a single new
   Curl_resolv_timeout function to reduce coupling.

RELEASE-NOTES

@@ -13,6 +13,7 @@ This release includes the following changes:
  o Added CURLOPT_CERTINFO and CURLINFO_CERTINFO
  o Added CURLOPT_POSTREDIR
  o Better detect HTTP 1.0 servers and don't do HTTP 1.1 requests on them
+ o configure --disable-proxy disables proxy
 
 This release includes the following bugfixes:
 
@@ -45,6 +46,6 @@ advice from friends like these:
  Keith Mok, Yang Tse, Daniel Fandrich, Guenter Knauf, Dmitriy Sergeyev,
  Linus Nielsen Feltzing, Martin Drasar, Stefan Krause, Dmitry Kurochkin,
  Mike Revi, Andres Garcia, Michael Goffioul, Markus Moeller, Rob Crittenden,
- Jamie Lokier, Emanuele Bovisio, Maxim Ivanov, Ian Lynagh
+ Jamie Lokier, Emanuele Bovisio, Maxim Ivanov, Ian Lynagh, Daniel Egger
 
         Thanks! (and sorry if I forgot to mention someone)

configure.ac

@@ -509,6 +509,22 @@ AC_HELP_STRING([--disable-ldaps],[Disable LDAPS support]),
        AC_SUBST(CURL_DISABLE_LDAPS, [1])
 )
 
+AC_MSG_CHECKING([whether to support proxiesy])
+AC_ARG_ENABLE(proxy,
+AC_HELP_STRING([--enable-proxy],[Enable proxy support])
+AC_HELP_STRING([--disable-proxy],[Disable proxy support]),
+[ case "$enableval" in
+  no)
+       AC_MSG_RESULT(no)
+       AC_DEFINE(CURL_DISABLE_PROXY, 1, [to disable proxies])
+       AC_SUBST(CURL_DISABLE_PROXY, [1])
+       ;;
+  *)   AC_MSG_RESULT(yes)
+       ;;
+  esac ],
+       AC_MSG_RESULT(yes)
+)
+
 AC_MSG_CHECKING([whether to support dict])
 AC_ARG_ENABLE(dict,
 AC_HELP_STRING([--enable-dict],[Enable DICT support])

lib/ftp.c

@@ -1876,14 +1876,12 @@ static CURLcode ftp_state_pasv_resp(struct connectdata *conn,
     ftp_pasv_verbose(conn, conninfo, newhost, connectport);
 
   switch(data->set.proxytype) {
+#ifndef CURL_DISABLE_PROXY
   case CURLPROXY_SOCKS5:
   case CURLPROXY_SOCKS5_HOSTNAME:
     result = Curl_SOCKS5(conn->proxyuser, conn->proxypasswd, newhost, newport,
                          SECONDARYSOCKET, conn);
     break;
-  case CURLPROXY_HTTP:
-    /* do nothing here. handled later. */
-    break;
   case CURLPROXY_SOCKS4:
     result = Curl_SOCKS4(conn->proxyuser, newhost, newport,
                          SECONDARYSOCKET, conn, FALSE);
@@ -1892,6 +1890,10 @@ static CURLcode ftp_state_pasv_resp(struct connectdata *conn,
     result = Curl_SOCKS4(conn->proxyuser, newhost, newport,
                          SECONDARYSOCKET, conn, TRUE);
     break;
+#endif /* CURL_DISABLE_PROXY */
+  case CURLPROXY_HTTP:
+    /* do nothing here. handled later. */
+    break;
   default:
     failf(data, "unknown proxytype option given");
     result = CURLE_COULDNT_CONNECT;

lib/socks.c

@@ -23,6 +23,7 @@
 
 #include "setup.h"
 
+#ifndef CURL_DISABLE_PROXY
 #include <string.h>
 
 #ifdef NEED_MALLOC_H
@@ -686,3 +687,6 @@ CURLcode Curl_SOCKS5(const char *proxy_name,
   Curl_nonblock(sock, TRUE);
   return CURLE_OK; /* Proxy was successful! */
 }
+
+#endif /* CURL_DISABLE_PROXY */
+

lib/url.c

@@ -2666,17 +2666,14 @@ static CURLcode ConnectPlease(struct SessionHandle *data,
     result = Curl_store_ip_addr(conn);
 
     if(CURLE_OK == result) {
-
       switch(data->set.proxytype) {
+#ifndef CURL_DISABLE_PROXY
       case CURLPROXY_SOCKS5:
       case CURLPROXY_SOCKS5_HOSTNAME:
         result = Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
                              conn->host.name, conn->remote_port,
                              FIRSTSOCKET, conn);
         break;
-      case CURLPROXY_HTTP:
-        /* do nothing here. handled later. */
-        break;
       case CURLPROXY_SOCKS4:
         result = Curl_SOCKS4(conn->proxyuser, conn->host.name,
                              conn->remote_port, FIRSTSOCKET, conn, FALSE);
@@ -2685,6 +2682,10 @@ static CURLcode ConnectPlease(struct SessionHandle *data,
         result = Curl_SOCKS4(conn->proxyuser, conn->host.name,
                              conn->remote_port, FIRSTSOCKET, conn, TRUE);
         break;
+#endif /* CURL_DISABLE_PROXY */
+      case CURLPROXY_HTTP:
+        /* do nothing here. handled later. */
+        break;
       default:
         failf(data, "unknown proxytype option given");
         result = CURLE_COULDNT_CONNECT;
@@ -3237,6 +3238,7 @@ static CURLcode setup_connection_internals(struct SessionHandle *data,
   return CURLE_UNSUPPORTED_PROTOCOL;
 }
 
+#ifndef CURL_DISABLE_PROXY
 /****************************************************************
 * Detect what (if any) proxy to use. Remember that this selects a host
 * name and is not limited to HTTP proxies only.
@@ -3513,6 +3515,7 @@ static CURLcode parse_proxy_auth(struct SessionHandle *data,
 
   return CURLE_OK;
 }
+#endif /* CURL_DISABLE_PROXY */
 
 /*
  *
@@ -4040,6 +4043,7 @@ static CURLcode create_conn(struct SessionHandle *data,
       return result;
   }
 
+#ifndef CURL_DISABLE_PROXY
   /*************************************************************
    * Extract the user and password from the authentication string
    *************************************************************/
@@ -4068,6 +4072,7 @@ static CURLcode create_conn(struct SessionHandle *data,
     proxy = NULL;
   }
   /* proxy must be freed later unless NULL */
+#endif /* CURL_DISABLE_PROXY */
 
   /*************************************************************
    * No protocol part in URL was used, add it!