Add --disable-lzo configure option

diff --git a/m4/lzo.m4 b/m4/lzo.m4
index a996b1d..36aa9b7 100644 (file)
--- a/m4/lzo.m4
+++ b/m4/lzo.m4
@@ -2,41 +2,46 @@ dnl Check to find the lzo headers/libraries
 
 AC_DEFUN([tinc_LZO],
 [
-  AC_ARG_WITH(lzo,
-    AS_HELP_STRING([--with-lzo=DIR], [lzo base directory, or:]),
-    [lzo="$withval"
-     CPPFLAGS="$CPPFLAGS -I$withval/include"
-     LDFLAGS="$LDFLAGS -L$withval/lib"]
-  )
+  AC_ARG_ENABLE([lzo],
+    AS_HELP_STRING([--disable-lzo], [disable lzo compression support]))
+  AS_IF([test "x$enable_lzo" != "xno"], [
+    AC_DEFINE(HAVE_LZO, 1, [enable lzo compression support])
+    AC_ARG_WITH(lzo,
+      AS_HELP_STRING([--with-lzo=DIR], [lzo base directory, or:]),
+      [lzo="$withval"
+       CPPFLAGS="$CPPFLAGS -I$withval/include"
+       LDFLAGS="$LDFLAGS -L$withval/lib"]
+    )
 
-  AC_ARG_WITH(lzo-include,
-    AS_HELP_STRING([--with-lzo-include=DIR], [lzo headers directory]),
-    [lzo_include="$withval"
-     CPPFLAGS="$CPPFLAGS -I$withval"]
-  )
+    AC_ARG_WITH(lzo-include,
+      AS_HELP_STRING([--with-lzo-include=DIR], [lzo headers directory]),
+      [lzo_include="$withval"
+       CPPFLAGS="$CPPFLAGS -I$withval"]
+    )
 
-  AC_ARG_WITH(lzo-lib,
-    AS_HELP_STRING([--with-lzo-lib=DIR], [lzo library directory]),
-    [lzo_lib="$withval"
-     LDFLAGS="$LDFLAGS -L$withval"]
-  )
+    AC_ARG_WITH(lzo-lib,
+      AS_HELP_STRING([--with-lzo-lib=DIR], [lzo library directory]),
+      [lzo_lib="$withval"
+       LDFLAGS="$LDFLAGS -L$withval"]
+    )
 
-  AC_CHECK_LIB(lzo2, lzo1x_1_compress,
-    [LIBS="$LIBS -llzo2"],
-    [AC_CHECK_LIB(lzo, lzo1x_1_compress,
-      [LIBS="$LIBS -llzo"],
-      [AC_MSG_ERROR("lzo libraries not found."); break]
-    )]
-  )
+    AC_CHECK_LIB(lzo2, lzo1x_1_compress,
+      [LIBS="$LIBS -llzo2"],
+      [AC_CHECK_LIB(lzo, lzo1x_1_compress,
+        [LIBS="$LIBS -llzo"],
+        [AC_MSG_ERROR("lzo libraries not found."); break]
+      )]
+    )
 
-  AC_CHECK_HEADERS(lzo/lzo1x.h,
-    [AC_DEFINE(LZO1X_H, [<lzo/lzo1x.h>], [Location of lzo1x.h])],
-    [AC_CHECK_HEADERS(lzo2/lzo1x.h,
-      [AC_DEFINE(LZO1X_H, [<lzo2/lzo1x.h>], [Location of lzo1x.h])],
-      [AC_CHECK_HEADERS(lzo1x.h,
-        [AC_DEFINE(LZO1X_H, [<lzo1x.h>], [Location of lzo1x.h])],
-        [AC_MSG_ERROR("lzo header files not found."); break]
+    AC_CHECK_HEADERS(lzo/lzo1x.h,
+      [AC_DEFINE(LZO1X_H, [<lzo/lzo1x.h>], [Location of lzo1x.h])],
+      [AC_CHECK_HEADERS(lzo2/lzo1x.h,
+        [AC_DEFINE(LZO1X_H, [<lzo2/lzo1x.h>], [Location of lzo1x.h])],
+        [AC_CHECK_HEADERS(lzo1x.h,
+          [AC_DEFINE(LZO1X_H, [<lzo1x.h>], [Location of lzo1x.h])],
+          [AC_MSG_ERROR("lzo header files not found."); break]
+        )]
       )]
-    )]
-  )
+    )
+  ])
 ])

diff --git a/src/net_packet.c b/src/net_packet.c
index 1f62f64..cf42a3d 100644 (file)
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -27,7 +27,10 @@
 #include <openssl/hmac.h>
 
 #include <zlib.h>
+
+#ifdef HAVE_LZO
 #include LZO1X_H
+#endif
 
 #include "avl_tree.h"
 #include "conf.h"
@@ -48,7 +51,9 @@
 
 int keylifetime = 0;
 int keyexpires = 0;
+#ifdef HAVE_LZO
 static char lzo_wrkmem[LZO1X_999_MEM_COMPRESS > LZO1X_1_MEM_COMPRESS ? LZO1X_999_MEM_COMPRESS : LZO1X_1_MEM_COMPRESS];
+#endif
 
 static void send_udppacket(node_t *, vpn_packet_t *);
 
@@ -148,9 +153,13 @@ void mtu_probe_h(node_t *n, vpn_packet_t *packet, length_t len) {
 
 static length_t compress_packet(uint8_t *dest, const uint8_t *source, length_t len, int level) {
        if(level == 10) {
+#ifdef HAVE_LZO
                lzo_uint lzolen = MAXSIZE;
                lzo1x_1_compress(source, len, dest, &lzolen, lzo_wrkmem);
                return lzolen;
+#else
+               return -1;
+#endif
        } else if(level < 10) {
                unsigned long destlen = MAXSIZE;
                if(compress2(dest, &destlen, source, len, level) == Z_OK)
@@ -158,9 +167,13 @@ static length_t compress_packet(uint8_t *dest, const uint8_t *source, length_t l
                else
                        return -1;
        } else {
+#ifdef HAVE_LZO
                lzo_uint lzolen = MAXSIZE;
                lzo1x_999_compress(source, len, dest, &lzolen, lzo_wrkmem);
                return lzolen;
+#else
+               return -1;
+#endif
        }
        
        return -1;
@@ -168,10 +181,12 @@ static length_t compress_packet(uint8_t *dest, const uint8_t *source, length_t l
 
 static length_t uncompress_packet(uint8_t *dest, const uint8_t *source, length_t len, int level) {
        if(level > 9) {
+#ifdef HAVE_LZO
                lzo_uint lzolen = MAXSIZE;
                if(lzo1x_decompress_safe(source, len, dest, &lzolen, NULL) == LZO_E_OK)
                        return lzolen;
                else
+#endif
                        return -1;
        } else {
                unsigned long destlen = MAXSIZE;

diff --git a/src/tincd.c b/src/tincd.c
index 7779430..3debb3e 100644 (file)
--- a/src/tincd.c
+++ b/src/tincd.c
@@ -37,7 +37,9 @@
 #include <openssl/evp.h>
 #include <openssl/engine.h>
 
+#ifdef HAVE_LZO
 #include LZO1X_H
+#endif
 
 #ifndef HAVE_MINGW
 #include <pwd.h>
@@ -540,10 +542,12 @@ int main(int argc, char **argv) {
        if(!read_server_config())
                return 1;
 
+#ifdef HAVE_LZO
        if(lzo_init() != LZO_E_OK) {
                logger(LOG_ERR, "Error initializing LZO compressor!");
                return 1;
        }
+#endif
 
 #ifdef HAVE_MINGW
        if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) {