# gpg-error.m4 - autoconf macro to detect libgpg-error.

# Copyright (C) 2002, 2003, 2004 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

# modifications, as long as this notice is preserved.

#

# This file is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the

# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

dnl AM_PATH_GPG_ERROR([MINIMUM-VERSION,

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],

[

  dnl --with-libgpg-error-prefix=PFX is the preferred name for this option,

  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", gpg_error_config_prefix="")

  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", gpg_error_config_prefix="")

  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_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

    req_major=`echo $min_gpg_error_version | \

               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`

    req_minor=`echo $min_gpg_error_version | \

               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`

    gpg_error_config_version=`$GPG_ERROR_CONFIG $gpg_error_config_args --version`

    major=`echo $gpg_error_config_version | \

               sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`

    minor=`echo $gpg_error_config_version | \

               sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`

    if test "$major" -gt "$req_major"; then

        ok=yes

    else

        if test "$major" -eq "$req_major"; then

            if test "$minor" -ge "$req_minor"; then

               ok=yes

            fi

        fi

    fi

  fi

  if test $ok = yes; then

    GPG_ERROR_CFLAGS=`$GPG_ERROR_CONFIG $gpg_error_config_args --cflags`

    GPG_ERROR_LIBS=`$GPG_ERROR_CONFIG $gpg_error_config_args --libs`

    AC_MSG_RESULT([yes ($gpg_error_config_version)])

    ifelse([$2], , :, [$2])

    if test x"$host" != x ; then

      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

    fi

  else

    GPG_ERROR_CFLAGS=""

    GPG_ERROR_LIBS=""

    AC_MSG_RESULT(no)

    ifelse([$3], , :, [$3])

  fi

  AC_SUBST(GPG_ERROR_CFLAGS)

  AC_SUBST(GPG_ERROR_LIBS)

])