[Buildroot] [PATCH 1/1] Fix AM_PATH_LIBGCRYPT not found

Eric Le Bihan eric.le.bihan.dev at free.fr
Wed Jun 11 21:21:30 UTC 2014


This patch installs a copy of libgcrypt.m4 from the libgcrypt source tarball
to systemd m4 directory.

Libgcrypt uses a custom m4 macro and not pkg-config to check if the
development files are available. Though libgcrypt support is optional in
systemd, this macro should be available whenever autoreconf is used,
otherwise the re-configuration will fail with:

  configure.ac:616: warning: macro 'AM_PATH_LIBGCRYPT' not found in library

The call to autoreconf is required, as it is needed by the patch which
solves the `ln --relative` issue.

As asking the user to install the development package of libgcrypt on
the host machine or adding libgcrypt as a build dependency to systemd is
not acceptable, the required file is added to the m4 directory.

Fixes: http://autobuild.buildroot.net/results/1524d346fa17749e2ae62e063b9cfdd0de95c76a/
Fixes: http://autobuild.buildroot.net/results/10bcd92437eaa27eb61f8281c93efcb53d555e35/

Signed-off-by: Eric Le Bihan <eric.le.bihan.dev at free.fr>
---
 ...systemd-04-fix-am-path-libgcrypt-no-found.patch | 145 +++++++++++++++++++++
 1 file changed, 145 insertions(+)
 create mode 100644 package/systemd/systemd-04-fix-am-path-libgcrypt-no-found.patch

diff --git a/package/systemd/systemd-04-fix-am-path-libgcrypt-no-found.patch b/package/systemd/systemd-04-fix-am-path-libgcrypt-no-found.patch
new file mode 100644
index 0000000..2287ac5
--- /dev/null
+++ b/package/systemd/systemd-04-fix-am-path-libgcrypt-no-found.patch
@@ -0,0 +1,145 @@
+Fix AM_PATH_LIBGCRYPT not found
+
+This patch installs a copy of libgcrypt.m4 from the libgcrypt source tarball
+to systemd m4 directory.
+
+Libgcrypt uses a custom m4 macro and not pkg-config to check if the
+development files are available. Though libgcrypt support is optional in
+systemd, this macro should be available whenever autoreconf is used, otherwise
+the re-configuration will fail with:
+
+  configure.ac:616: warning: macro 'AM_PATH_LIBGCRYPT' not found in library
+
+As asking the user to install the development package of libgcrypt on the host
+machine or adding libgcrypt as a build dependency to systemd is not
+acceptable, the required file is added to the m4 directory.
+
+Signed-off-by: Eric Le Bihan <eric.le.bihan.dev at free.fr>
+Index: systemd-213/m4/libgcrypt.m4
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ systemd-213/m4/libgcrypt.m4	2014-06-11 10:41:11.749305509 +0200
+@@ -0,0 +1,123 @@
++dnl Autoconf macros for libgcrypt
++dnl       Copyright (C) 2002, 2004 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
++dnl modifications, as long as this notice is preserved.
++dnl
++dnl This file is distributed in the hope that it will be useful, but
++dnl WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
++dnl implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
++
++
++dnl AM_PATH_LIBGCRYPT([MINIMUM-VERSION,
++dnl                   [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
++dnl Test for libgcrypt and define LIBGCRYPT_CFLAGS and LIBGCRYPT_LIBS.
++dnl MINIMUN-VERSION is a string with the version number optionalliy prefixed
++dnl with the API version to also check the API compatibility. Example:
++dnl a MINIMUN-VERSION of 1:1.2.5 won't pass the test unless the installed
++dnl version of libgcrypt is at least 1.2.5 *and* the API number is 1.  Using
++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_HELP_STRING([--with-libgcrypt-prefix=PFX],
++                           [prefix where LIBGCRYPT is installed (optional)]),
++     libgcrypt_config_prefix="$withval", libgcrypt_config_prefix="")
++  if test x$libgcrypt_config_prefix != x ; then
++     if test x${LIBGCRYPT_CONFIG+set} != xset ; then
++        LIBGCRYPT_CONFIG=$libgcrypt_config_prefix/bin/libgcrypt-config
++     fi
++  fi
++
++  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/'`
++     min_libgcrypt_version=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\2/'`
++  else
++     req_libgcrypt_api=0
++     min_libgcrypt_version="$tmp"
++  fi
++
++  AC_MSG_CHECKING(for LIBGCRYPT - version >= $min_libgcrypt_version)
++  ok=no
++  if test "$LIBGCRYPT_CONFIG" != "no" ; then
++    req_major=`echo $min_libgcrypt_version | \
++               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
++    req_minor=`echo $min_libgcrypt_version | \
++               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
++    req_micro=`echo $min_libgcrypt_version | \
++               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
++    libgcrypt_config_version=`$LIBGCRYPT_CONFIG --version`
++    major=`echo $libgcrypt_config_version | \
++               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
++    minor=`echo $libgcrypt_config_version | \
++               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
++    micro=`echo $libgcrypt_config_version | \
++               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\3/'`
++    if test "$major" -gt "$req_major"; then
++        ok=yes
++    else
++        if test "$major" -eq "$req_major"; then
++            if test "$minor" -gt "$req_minor"; then
++               ok=yes
++            else
++               if test "$minor" -eq "$req_minor"; then
++                   if test "$micro" -ge "$req_micro"; then
++                     ok=yes
++                   fi
++               fi
++            fi
++        fi
++    fi
++  fi
++  if test $ok = yes; then
++    AC_MSG_RESULT([yes ($libgcrypt_config_version)])
++  else
++    AC_MSG_RESULT(no)
++  fi
++  if test $ok = yes; then
++     # If we have a recent libgcrypt, we should also check that the
++     # API is compatible
++     if test "$req_libgcrypt_api" -gt 0 ; then
++        tmp=`$LIBGCRYPT_CONFIG --api-version 2>/dev/null || echo 0`
++        if test "$tmp" -gt 0 ; then
++           AC_MSG_CHECKING([LIBGCRYPT API version])
++           if test "$req_libgcrypt_api" -eq "$tmp" ; then
++             AC_MSG_RESULT([okay])
++           else
++             ok=no
++             AC_MSG_RESULT([does not match. want=$req_libgcrypt_api got=$tmp])
++           fi
++        fi
++     fi
++  fi
++  if test $ok = yes; then
++    LIBGCRYPT_CFLAGS=`$LIBGCRYPT_CONFIG --cflags`
++    LIBGCRYPT_LIBS=`$LIBGCRYPT_CONFIG --libs`
++    ifelse([$2], , :, [$2])
++    if test x"$host" != x ; then
++      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
++    fi
++  else
++    LIBGCRYPT_CFLAGS=""
++    LIBGCRYPT_LIBS=""
++    ifelse([$3], , :, [$3])
++  fi
++  AC_SUBST(LIBGCRYPT_CFLAGS)
++  AC_SUBST(LIBGCRYPT_LIBS)
++])
--
1.9.3



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