Make it compile on FreeBSD.

Makefile

 srcdir=.
 
-CFLAGS=-g -O2
-LDFLAGS=
+CFLAGS=-I/usr/local/include
+LDFLAGS=-L/usr/local/lib
 CPPFLAGS=
 DEFS=-DHAVE_CONFIG_H
-COMPILE_FLAGS=${CFLAGS} ${CPPFLAGS} ${DEFS} -Wall -Wextra -Werror -Wno-deprecated -fno-strict-aliasing -fno-omit-frame-pointer -ggdb
+COMPILE_FLAGS=${CFLAGS} ${CPPFLAGS} ${DEFS} -Wall -Wextra -Werror -fno-strict-aliasing -fno-omit-frame-pointer -ggdb
 
-EXTRA_LIBS= -lreadline -lrt -lconfig
-LOCAL_LDFLAGS=-lm -lcrypto -lz -lssl -rdynamic -ggdb ${EXTRA_LIBS}
+EXTRA_LIBS=
+LOCAL_LDFLAGS=-lm -lcrypto -lz -lssl -rdynamic -ggdb -lconfig -lreadline -lexecinfo ${EXTRA_LIBS}
 LINK_FLAGS=${LDFLAGS} ${LOCAL_LDFLAGS}
 
 HEADERS= ${srcdir}/constants.h  ${srcdir}/include.h  ${srcdir}/interface.h  ${srcdir}/LICENSE.h  ${srcdir}/loop.h  ${srcdir}/mtproto-client.h  ${srcdir}/mtproto-common.h  ${srcdir}/net.h  ${srcdir}/no-preview.h  ${srcdir}/queries.h  ${srcdir}/structures.h  ${srcdir}/telegram.h  ${srcdir}/tree.h ${srcdir}/config.h ${srcdir}/binlog.h

Makefile.in

@@ -4,10 +4,10 @@ CFLAGS=@CFLAGS@
 LDFLAGS=@LDFLAGS@
 CPPFLAGS=@CPPFLAGS@
 DEFS=@DEFS@
-COMPILE_FLAGS=${CFLAGS} ${CPPFLAGS} ${DEFS} -Wall -Wextra -Werror -Wno-deprecated -fno-strict-aliasing -fno-omit-frame-pointer -ggdb
+COMPILE_FLAGS=${CFLAGS} ${CPPFLAGS} ${DEFS} -Wall -Wextra -Werror -fno-strict-aliasing -fno-omit-frame-pointer -ggdb
 
 EXTRA_LIBS=@EXTRA_LIBS@
-LOCAL_LDFLAGS=-lm -lcrypto -lz -lssl -rdynamic -ggdb ${EXTRA_LIBS}
+LOCAL_LDFLAGS=-lm -lcrypto -lz -lssl -rdynamic -ggdb -lconfig -lreadline -lexecinfo ${EXTRA_LIBS}
 LINK_FLAGS=${LDFLAGS} ${LOCAL_LDFLAGS}
 
 HEADERS= ${srcdir}/constants.h  ${srcdir}/include.h  ${srcdir}/interface.h  ${srcdir}/LICENSE.h  ${srcdir}/loop.h  ${srcdir}/mtproto-client.h  ${srcdir}/mtproto-common.h  ${srcdir}/net.h  ${srcdir}/no-preview.h  ${srcdir}/queries.h  ${srcdir}/structures.h  ${srcdir}/telegram.h  ${srcdir}/tree.h ${srcdir}/config.h ${srcdir}/binlog.h

config.h

@@ -24,7 +24,7 @@
 #define HAVE_MALLOC 1
 
 /* Define to 1 if you have the <malloc.h> header file. */
-#define HAVE_MALLOC_H 1
+/* #undef HAVE_MALLOC_H */
 
 /* Define to 1 if you have the <memory.h> header file. */
 #define HAVE_MEMORY_H 1

loop.c

@@ -20,6 +20,7 @@
 #include "config.h"
 
 #include <assert.h>
+#define _WITH_GETLINE
 #include <stdio.h>
 
 #include <stdlib.h>

mtproto-client.c

@@ -26,6 +26,7 @@
 #include <signal.h>
 #include <unistd.h>
 #include <fcntl.h>
+#include <sys/endian.h>
 #include <sys/types.h>
 #include <aio.h>
 #include <netdb.h>
@@ -34,6 +35,7 @@
 #include <openssl/pem.h>
 #include <openssl/sha.h>
 #include <sys/socket.h>
+#include <netinet/in.h>
 #include <netinet/tcp.h>
 #include <poll.h>
 #include <zlib.h>
@@ -46,6 +48,10 @@
 #include "structures.h"
 #include "binlog.h"
 
+#if defined(__FreeBSD__)
+#define __builtin_bswap32(x) bswap32(x)
+#endif
+
 #define sha1 SHA1
 
 #include "mtproto-common.h"
@@ -1589,7 +1595,7 @@ int rpc_execute (struct connection *c, int op, int len) {
     logprintf ( "have %d Response bytes\n", Response_len);
   }
 
-#ifndef __MACH__
+#if !defined(__MACH__) && !defined(__FreeBSD__)
   setsockopt (c->fd, IPPROTO_TCP, TCP_QUICKACK, (int[]){0}, 4);
 #endif
   int o = c_state;
@@ -1597,19 +1603,19 @@ int rpc_execute (struct connection *c, int op, int len) {
   switch (o) {
   case st_reqpq_sent:
     process_respq_answer (c, Response/* + 8*/, Response_len/* - 12*/);
-#ifndef __MACH__
+#if !defined(__MACH__) && !defined(__FreeBSD__)
     setsockopt (c->fd, IPPROTO_TCP, TCP_QUICKACK, (int[]){0}, 4);
 #endif
     return 0;
   case st_reqdh_sent:
     process_dh_answer (c, Response/* + 8*/, Response_len/* - 12*/);
-#ifndef __MACH__
+#if !defined(__MACH__) && !defined(__FreeBSD__)
     setsockopt (c->fd, IPPROTO_TCP, TCP_QUICKACK, (int[]){0}, 4);
 #endif
     return 0;
   case st_client_dh_sent:
     process_auth_complete (c, Response/* + 8*/, Response_len/* - 12*/);
-#ifndef __MACH__
+#if !defined(__MACH__) && !defined(__FreeBSD__)
     setsockopt (c->fd, IPPROTO_TCP, TCP_QUICKACK, (int[]){0}, 4);
 #endif
     return 0;
@@ -1619,7 +1625,7 @@ int rpc_execute (struct connection *c, int op, int len) {
     } else {
       process_rpc_message (c, (void *)(Response/* + 8*/), Response_len/* - 12*/);
     }
-#ifndef __MACH__
+#if !defined(__MACH__) && !defined(__FreeBSD__)
     setsockopt (c->fd, IPPROTO_TCP, TCP_QUICKACK, (int[]){0}, 4);
 #endif
     return 0;
@@ -1647,7 +1653,7 @@ int tc_becomes_ready (struct connection *c) {
   assert (write_out (c, &byte, 1) == 1);
   flush_out (c);
   
-#ifndef __MACH__
+#if !defined(__MACH__) && !defined(__FreeBSD__)
   setsockopt (c->fd, IPPROTO_TCP, TCP_QUICKACK, (int[]){0}, 4);
 #endif
   int o = c_state;

net.c

@@ -21,8 +21,11 @@
 #include <stdlib.h>
 #include <assert.h>
 #include <netdb.h>
+#include <netinet/in.h>
 #include <netinet/tcp.h>
 #include <sys/fcntl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
 #include <errno.h>
 #include <stdio.h>
 #include <unistd.h>
@@ -37,7 +40,7 @@
 #include "tree.h"
 #include "interface.h"
 
-#ifdef __MACH__
+#if defined(__MACH__) || defined(__FreeBSD__)
 #define POLLRDHUP 0
 #endif