on FreeBSD pthread library are linked with -pthread

diff --git a/configure.in b/configure.in
index 557947f..a877208 100755 (executable)
--- a/configure.in
+++ b/configure.in
@@ -728,7 +728,11 @@ fi
 AC_CHECK_LIB([bz2],         [main],, AC_MSG_ERROR($missing_library))
 AC_CHECK_LIB([jpeg],        [main],, AC_MSG_ERROR($missing_library)) # check for cximage
 AC_CHECK_LIB([tiff],        [main],, AC_MSG_ERROR($missing_library))
+if echo "$ARCH" | grep -q freebsd; then
+AC_CHECK_LIB([pthread],     [main],LIBS="-pthread $LIBS", AC_MSG_ERROR($missing_library))
+else
 AC_CHECK_LIB([pthread],     [main],, AC_MSG_ERROR($missing_library))
+fi
 AC_CHECK_LIB([lzo2],        [main],, AC_MSG_ERROR($missing_library))
 AC_CHECK_LIB([z],           [main],, AC_MSG_ERROR($missing_library))
 AC_CHECK_LIB([crypto],      [main],, AC_MSG_ERROR($missing_library))