File meanwhile-use-libtommath.patch of Package meanwhile

--- a/configure.ac
+++ b/configure.ac
@@ -91,10 +91,10 @@ AC_SUBST(WITH_DOC_SUBPACKAGE)
 
 
 
-# libm for use in mpi.c
-AC_CHECK_LIB(m, main, LIBM="-lm")
-AC_CHECK_HEADER(math.h)
-AC_SUBST(LIBM)
+# LibTomMath
+AC_CHECK_LIB(tommath, mp_exptmod, LIBTOMMATH_LIBS="-ltommath")
+AC_CHECK_HEADER(tommath.h)
+AC_SUBST(LIBTOMMATH_LIBS)
 
 
 
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,6 +1,4 @@
 
-SUBDIRS = mpi
-
 lib_LTLIBRARIES = libmeanwhile.la
 
 mwinclude_HEADERS = \
@@ -54,7 +52,9 @@ libmeanwhile_la_SOURCES = \
 	mw_debug.c \
 	mw_util.c
 
-libmeanwhile_la_LIBADD = $(GLIB_LIBS) mpi/libmpi.la
+libmeanwhile_la_LIBADD = \
+	$(GLIB_LIBS) \
+	$(LIBTOMMATH_LIBS)
 
 AM_CPPFLAGS = \
 	-DG_LOG_DOMAIN=\"@PACKAGE@\"
--- a/src/cipher.c
+++ b/src/cipher.c
@@ -21,7 +21,7 @@
 #include <stdlib.h>
 #include <time.h>
 
-#include "mpi/mpi.h"
+#include <tommath.h>
 
 #include "mw_channel.h"
 #include "mw_cipher.h"
@@ -29,6 +29,16 @@
 #include "mw_session.h"
 
 
+#define mw_mp_int                        mp_int
+#define mw_mp_init(a)                    mp_init(a)
+#define mw_mp_clear(a)                   mp_clear(a)
+#define mw_mp_to_unsigned_bin(a, b)      mp_to_unsigned_bin(a, b)
+#define mw_mp_read_unsigned_bin(a, b, c) mp_read_unsigned_bin(a, b, c)
+#define mw_mp_unsigned_bin_size(a)       mp_unsigned_bin_size(a)
+#define mw_mp_exptmod(a, b, c, d)        mp_exptmod(a, b, c, d)
+#define mw_mp_set_int(a, b)              mp_set_int(a, b)
+
+
 struct mwMpi {
   mw_mp_int i;
 };
Only in a/src: mpi
--- a/src/mw_cipher.h
+++ b/src/mw_cipher.h
@@ -239,10 +239,10 @@ void mwDecrypt(const guchar *key, gsize
   outside of a channel (eg. session authentication). These are
   wrapping a full multiple-precision integer math library, but most of
   the functionality there-of is not exposed. Currently, the math is
-  provided by a copy of the public domain libmpi.
+  provided by the public domain LibTomMath.
 
-  for more information on the used MPI Library, visit
-  http://www.cs.dartmouth.edu/~sting/mpi/
+  for more information on the used LibTomMath Library, visit
+  https://www.libtom.net/LibTomMath/
 */
 /* @{ */