From ed40c38220a0c32976a0fda56aec1e7499df858b Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Wed, 26 Sep 2012 20:16:30 +0000
Subject: [PATCH] releaxing libgcrypt version check, fixing Debian #684997

---
 configure.ac             | 16 ++++++++++++++--
 src/util/crypto_random.c |  4 ++--
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/configure.ac b/configure.ac
index f575af17f..165e66d44 100644
--- a/configure.ac
+++ b/configure.ac
@@ -221,13 +221,25 @@ fi
 
 # libgcrypt
 gcrypt=0
-AM_PATH_LIBGCRYPT(1.2.0, gcrypt=1)
+NEED_LIBGCRYPT_API=1
+NEED_LIBGCRYPT_VERSION=1.4.2
+
+
+AM_PATH_LIBGCRYPT("$NEED_LIBGCRYPT_API:$NEED_LIBGCRYPT_VERSION", gcrypt=1)
 AC_CHECK_DECLS([gcry_mpi_lshift], [], [], [[#include <gcrypt.h>]])
 
 if test $gcrypt = 0
 then
-  AC_MSG_ERROR([GNUnet needs libgcrypt])
+  AC_MSG_ERROR([[
+***
+*** You need libgcrypt to build this program.
+**  This library is for example available at
+***   ftp://ftp.gnupg.org/gcrypt/libgcrypt/
+*** (at least version $NEED_LIBGCRYPT_VERSION (API $NEED_LIBGCRYPT_API) 
+***  is required.)
+***]])
 fi
+AC_DEFINE_UNQUOTED([NEED_LIBGCRYPT_VERSION], "$NEED_LIBGCRYPT_VERSION", [required libgcrypt version])
 
 # Adam shostack suggests the following for Windows:
 # -D_FORTIFY_SOURCE=2 -fstack-protector-all
diff --git a/src/util/crypto_random.c b/src/util/crypto_random.c
index 8dce1080c..29b25524d 100644
--- a/src/util/crypto_random.c
+++ b/src/util/crypto_random.c
@@ -335,12 +335,12 @@ killfind ()
 void __attribute__ ((constructor)) GNUNET_CRYPTO_random_init ()
 {
   gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
-  if (!gcry_check_version (GCRYPT_VERSION))
+  if (!gcry_check_version (NEED_LIBGCRYPT_VERSION))
   {
     FPRINTF (stderr,
              _
              ("libgcrypt has not the expected version (version %s is required).\n"),
-             GCRYPT_VERSION);
+             NEED_LIBGCRYPT_VERSION);
     GNUNET_abort ();
   }
 #ifdef GCRYCTL_INITIALIZATION_FINISHED
-- 
2.25.1