Update gpg-error, libgcrypt, and ksba m4 scripts.

* m4/gpg-error.m4: Update from libgpg-error repo.
* m4/ksba.m4: Likewise.
* m4/libgcrypt.m4: Likewise.
--

GnuPG-bug-id: 1496.
Signed-off-by: Werner Koch <wk@gnupg.org>

m4/gpg-error.m4

@@ -1,5 +1,5 @@
 # gpg-error.m4 - autoconf macro to detect libgpg-error.
-# Copyright (C) 2002, 2003, 2004 g10 Code GmbH
+# Copyright (C) 2002, 2003, 2004, 2011 g10 Code GmbH
 #
 # This file is free software; as a special exception the author gives
 # unlimited permission to copy and/or distribute it, with or without
@@ -14,21 +14,34 @@ dnl                   [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
 dnl Test for libgpg-error and define GPG_ERROR_CFLAGS and GPG_ERROR_LIBS
 dnl
 AC_DEFUN([AM_PATH_GPG_ERROR],
-[ AC_ARG_WITH(gpg-error-prefix,
+[ AC_REQUIRE([AC_CANONICAL_HOST])
-            AC_HELP_STRING([--with-gpg-error-prefix=PFX],
+  gpg_error_config_prefix=""
-                           [prefix where GPG Error is installed (optional)]),
+  dnl --with-libgpg-error-prefix=PFX is the preferred name for this option,
-     gpg_error_config_prefix="$withval", gpg_error_config_prefix="")
+  dnl since that is consistent with how our three siblings use the directory/
+  dnl package name in --with-$dir_name-prefix=PFX.
+  AC_ARG_WITH(libgpg-error-prefix,
+              AC_HELP_STRING([--with-libgpg-error-prefix=PFX],
+                             [prefix where GPG Error is installed (optional)]),
+              [gpg_error_config_prefix="$withval"])
+
+  dnl Accept --with-gpg-error-prefix and make it work the same as
+  dnl --with-libgpg-error-prefix above, for backwards compatibility,
+  dnl but do not document this old, inconsistently-named option.
+  AC_ARG_WITH(gpg-error-prefix,,
+              [gpg_error_config_prefix="$withval"])
+
   if test x$gpg_error_config_prefix != x ; then
      if test x${GPG_ERROR_CONFIG+set} != xset ; then
         GPG_ERROR_CONFIG=$gpg_error_config_prefix/bin/gpg-error-config
      fi
   fi
 
-  AC_PATH_PROG(GPG_ERROR_CONFIG, gpg-error-config, no)
+  AC_PATH_TOOL(GPG_ERROR_CONFIG, gpg-error-config, no)
   min_gpg_error_version=ifelse([$1], ,0.0,$1)
   AC_MSG_CHECKING(for GPG Error - version >= $min_gpg_error_version)
   ok=no
-  if test "$GPG_ERROR_CONFIG" != "no" ; then
+  if test "$GPG_ERROR_CONFIG" != "no" \
+     && test -f "$GPG_ERROR_CONFIG" ; then
     req_major=`echo $min_gpg_error_version | \
                sed 's/\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
     req_minor=`echo $min_gpg_error_version | \
@@ -53,6 +66,19 @@ AC_DEFUN([AM_PATH_GPG_ERROR],
     GPG_ERROR_LIBS=`$GPG_ERROR_CONFIG $gpg_error_config_args --libs`
     AC_MSG_RESULT([yes ($gpg_error_config_version)])
     ifelse([$2], , :, [$2])
+    gpg_error_config_host=`$GPG_ERROR_CONFIG $gpg_error_config_args --host 2>/dev/null || echo none`
+    if test x"$gpg_error_config_host" != xnone ; then
+      if test x"$gpg_error_config_host" != x"$host" ; then
+  AC_MSG_WARN([[
+***
+*** The config script $GPG_ERROR_CONFIG was
+*** built for $gpg_error_config_host and thus may not match the
+*** used host $host.
+*** You may want to use the configure option --with-gpg-error-prefix
+*** to specify a matching config script.
+***]])
+      fi
+    fi
   else
     GPG_ERROR_CFLAGS=""
     GPG_ERROR_LIBS=""
@@ -62,4 +88,3 @@ AC_DEFUN([AM_PATH_GPG_ERROR],
   AC_SUBST(GPG_ERROR_CFLAGS)
   AC_SUBST(GPG_ERROR_LIBS)
 ])
-

m4/ksba.m4

@@ -21,7 +21,8 @@ dnl this features allows to prevent build against newer versions of libksba
 dnl with a changed API.
 dnl
 AC_DEFUN([AM_PATH_KSBA],
-[ AC_ARG_WITH(ksba-prefix,
+[AC_REQUIRE([AC_CANONICAL_HOST])
+ AC_ARG_WITH(ksba-prefix,
             AC_HELP_STRING([--with-ksba-prefix=PFX],
                            [prefix where KSBA is installed (optional)]),
      ksba_config_prefix="$withval", ksba_config_prefix="")
@@ -99,6 +100,19 @@ AC_DEFUN([AM_PATH_KSBA],
     KSBA_CFLAGS=`$KSBA_CONFIG $ksba_config_args --cflags`
     KSBA_LIBS=`$KSBA_CONFIG $ksba_config_args --libs`
     ifelse([$2], , :, [$2])
+    libksba_config_host=`$LIBKSBA_CONFIG $ksba_config_args --host 2>/dev/null || echo none`
+    if test x"$libksba_config_host" != xnone ; then
+      if test x"$libksba_config_host" != x"$host" ; then
+  AC_MSG_WARN([[
+***
+*** The config script $LIBKSBA_CONFIG was
+*** built for $libksba_config_host and thus may not match the
+*** used host $host.
+*** You may want to use the configure option --with-libksba-prefix
+*** to specify a matching config script.
+***]])
+      fi
+    fi
   else
     KSBA_CFLAGS=""
     KSBA_LIBS=""

m4/libgcrypt.m4

@@ -1,5 +1,5 @@
 dnl Autoconf macros for libgcrypt
-dnl       Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+dnl       Copyright (C) 2002, 2004, 2011 Free Software Foundation, Inc.
 dnl
 dnl This file is free software; as a special exception the author gives
 dnl unlimited permission to copy and/or distribute it, with or without
@@ -21,7 +21,8 @@ dnl this features allows to prevent build against newer versions of libgcrypt
 dnl with a changed API.
 dnl
 AC_DEFUN([AM_PATH_LIBGCRYPT],
-[ AC_ARG_WITH(libgcrypt-prefix,
+[ AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_ARG_WITH(libgcrypt-prefix,
             AC_HELP_STRING([--with-libgcrypt-prefix=PFX],
                            [prefix where LIBGCRYPT is installed (optional)]),
      libgcrypt_config_prefix="$withval", libgcrypt_config_prefix="")
@@ -31,7 +32,7 @@ AC_DEFUN([AM_PATH_LIBGCRYPT],
      fi
   fi
 
-  AC_PATH_PROG(LIBGCRYPT_CONFIG, libgcrypt-config, no)
+  AC_PATH_TOOL(LIBGCRYPT_CONFIG, libgcrypt-config, no)
   tmp=ifelse([$1], ,1:1.2.0,$1)
   if echo "$tmp" | grep ':' >/dev/null 2>/dev/null ; then
      req_libgcrypt_api=`echo "$tmp"     | sed 's/\(.*\):\(.*\)/\1/'`
@@ -98,6 +99,19 @@ AC_DEFUN([AM_PATH_LIBGCRYPT],
     LIBGCRYPT_CFLAGS=`$LIBGCRYPT_CONFIG --cflags`
     LIBGCRYPT_LIBS=`$LIBGCRYPT_CONFIG --libs`
     ifelse([$2], , :, [$2])
+    libgcrypt_config_host=`$LIBGCRYPT_CONFIG --host 2>/dev/null || echo none`
+    if test x"$libgcrypt_config_host" != xnone ; then
+      if test x"$libgcrypt_config_host" != x"$host" ; then
+  AC_MSG_WARN([[
+***
+*** The config script $LIBGCRYPT_CONFIG was
+*** built for $libgcrypt_config_host and thus may not match the
+*** used host $host.
+*** You may want to use the configure option --with-libgcrypt-prefix
+*** to specify a matching config script.
+***]])
+      fi
+    fi
   else
     LIBGCRYPT_CFLAGS=""
     LIBGCRYPT_LIBS=""