gnu: shishi: Build with latest libgcrypt.

* gnu/packages/patches/shishi-fix-libgcrypt-detection.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/kerberos.scm (shishi)[source]: Use it.
[inputs]: Use libgcrypt instead of libgcrypt-1.5.
[arguments]: Set 'ac_cv_libgcrypt=yes' in #:configure-flags.
* gnu/packages/gnupg.scm (libgcrypt-1.5): Remove variable.

gnu/local.mk

@@ -961,6 +961,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/scotch-test-threading.patch		\
   %D%/packages/patches/sdl-libx11-1.6.patch			\
   %D%/packages/patches/seq24-rename-mutex.patch			\
+  %D%/packages/patches/shishi-fix-libgcrypt-detection.patch	\
   %D%/packages/patches/slim-session.patch			\
   %D%/packages/patches/slim-config.patch			\
   %D%/packages/patches/slim-sigusr1.patch			\

gnu/packages/gnupg.scm

@@ -115,18 +115,6 @@ generation.")
     (properties '((ftp-server . "ftp.gnupg.org")
                   (ftp-directory . "/gcrypt/libgcrypt")))))
 
-(define-public libgcrypt-1.5
-  (package (inherit libgcrypt)
-    (version "1.5.6")
-    (source
-     (origin
-      (method url-fetch)
-      (uri (string-append "mirror://gnupg/libgcrypt/libgcrypt-"
-                          version ".tar.bz2"))
-      (sha256
-       (base32
-        "0ydy7bgra5jbq9mxl5x031nif3m6y3balc6ndw2ngj11wnsjc61h"))))))
-
 (define-public libassuan
   (package
     (name "libassuan")

gnu/packages/kerberos.scm

@@ -24,8 +24,10 @@
 
 (define-module (gnu packages kerberos)
   #:use-module (gnu packages)
+  #:use-module (gnu packages autotools)
   #:use-module (gnu packages bison)
   #:use-module (gnu packages perl)
+  #:use-module (gnu packages gettext)
   #:use-module (gnu packages gnupg)
   #:use-module (gnu packages libidn)
   #:use-module (gnu packages linux)
@@ -33,6 +35,7 @@
   #:use-module (gnu packages compression)
   #:use-module (gnu packages databases)
   #:use-module (gnu packages readline)
+  #:use-module (gnu packages texinfo)
   #:use-module (gnu packages tls)
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix packages)
@@ -98,25 +101,23 @@ cryptography.")
       (method url-fetch)
       (uri (string-append "mirror://gnu/shishi/shishi-"
                           version ".tar.gz"))
+      (patches (search-patches "shishi-fix-libgcrypt-detection.patch"))
       (sha256
        (base32
         "032qf72cpjdfffq1yq54gz3ahgqf2ijca4vl31sfabmjzq9q370d"))))
     (build-system gnu-build-system)
+    (arguments
+     '(;; This is required since we patch some of the build scripts.
+       ;; Remove for the next Shishi release after 1.0.2 or when
+       ;; removing 'shishi-fix-libgcrypt-detection.patch'.
+       #:configure-flags '("ac_cv_libgcrypt=yes")))
     (native-inputs `(("pkg-config" ,pkg-config)))
     (inputs
      `(("gnutls" ,gnutls)
        ("libidn" ,libidn)
        ("linux-pam" ,linux-pam-1.2)
        ("zlib" ,zlib)
-       ;; libgcrypt 1.6 fails because of the following test:
-       ;;  #include <gcrypt.h>
-       ;; /* GCRY_MODULE_ID_USER was added in 1.4.4 and gc-libgcrypt.c
-       ;;    will fail on startup if we don't have 1.4.4 or later, so
-       ;;    test for it early. */
-       ;; #if !defined GCRY_MODULE_ID_USER
-       ;; error too old libgcrypt
-       ;; #endif
-       ("libgcrypt" ,libgcrypt-1.5)
+       ("libgcrypt" ,libgcrypt)
        ("libtasn1" ,libtasn1)))
     (home-page "https://www.gnu.org/software/shishi/")
     (synopsis "Implementation of the Kerberos 5 network security system")

gnu/packages/patches/shishi-fix-libgcrypt-detection.patch

@@ -0,0 +1,32 @@
+Fix building of Shishi with libgcrypt 1.6 and later.
+
+Patch copied from Debian:
+
+https://anonscm.debian.org/cgit/collab-maint/shishi.git/tree/debian/patches/fix_gcrypt_detection.diff?id=948301ae648a542a408da250755aeed58a6e3542
+
+Description: Fix autoconf gnutls detection to also accept gcrypt 1.6.
+Author: Andreas Metzler <ametzler@debian.org>
+Bug-Debian: http://bugs.debian.org/753150
+Origin: vendor
+Forwarded: no
+Last-Update: 2014-07-18
+
+--- shishi-1.0.2.orig/gl/m4/gc.m4
++++ shishi-1.0.2/gl/m4/gc.m4
+@@ -12,10 +12,12 @@ AC_DEFUN([gl_GC],
+   if test "$libgcrypt" != no; then
+     AC_LIB_HAVE_LINKFLAGS([gcrypt], [gpg-error], [
+ #include <gcrypt.h>
+-/* GCRY_MODULE_ID_USER was added in 1.4.4 and gc-libgcrypt.c
+-   will fail on startup if we don't have 1.4.4 or later, so
+-   test for it early. */
+-#if !defined GCRY_MODULE_ID_USER
++/* gc-libgcrypt.c will fail on startup if we don't have libgcrypt 1.4.4 or
++   later, test for it early. by checking for either
++   - GCRY_MODULE_ID_USER which was added in 1.4.4 and dropped in 1.6 or
++   - GCRYPT_VERSION_NUMBER which was added in 1.6.
++   */
++#if !defined GCRY_MODULE_ID_USER && !defined GCRYPT_VERSION_NUMBER
+ error too old libgcrypt
+ #endif
+ ])