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

# Copyright (C) 2002, 2003, 2004, 2011, 2014, 2018 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.

#

# Last-changed: 2018-11-02

dnl AM_PATH_GPG_ERROR([MINIMUM-VERSION,

dnl                   [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])

dnl

dnl Test for libgpg-error and define GPG_ERROR_CFLAGS, GPG_ERROR_LIBS,

dnl GPG_ERROR_MT_CFLAGS, and GPG_ERROR_MT_LIBS.  The _MT_ variants are

dnl used for programs requireing real multi thread support.

dnl

dnl If a prefix option is not used, the config script is first

dnl searched in $SYSROOT/bin and then along $PATH.  If the used

dnl config script does not match the host specification the script

dnl is added to the gpg_config_script_warn variable.

dnl

AC_DEFUN([AM_PATH_GPG_ERROR],

[ AC_REQUIRE([AC_CANONICAL_HOST])

  gpg_error_config_prefix=""

  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"])

  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}" = x ; then

     if test x"${gpg_error_config_prefix}" != x ; then

        GPG_ERROR_CONFIG="${gpg_error_config_prefix}/bin/gpg-error-config"

     else

       case "${SYSROOT}" in

         /*)

           if test -x "${SYSROOT}/bin/gpg-error-config" ; then

             GPG_ERROR_CONFIG="${SYSROOT}/bin/gpg-error-config"

           fi

           ;;

         '')

           ;;

          *)

           AC_MSG_WARN([Ignoring \$SYSROOT as it is not an absolute path.])

           ;;

       esac

     fi

  fi

  AC_PATH_PROG(GPG_ERROR_CONFIG, gpg-error-config, no)

  min_gpg_error_version=ifelse([$1], ,1.33,$1)

  ok=no

  if test "$prefix" = NONE ; then

    prefix_option_expanded=/usr/local

  else

    prefix_option_expanded="$prefix"

  fi

  if test "$exec_prefix" = NONE ; then

    exec_prefix_option_expanded=$prefix_option_expanded

  else

    exec_prefix_option_expanded=$(prefix=$prefix_option_expanded eval echo $exec_prefix)

  fi

  libdir_option_expanded=$(prefix=$prefix_option_expanded exec_prefix=$exec_prefix_option_expanded eval echo $libdir)

  if test -f $libdir_option_expanded/pkgconfig/gpg-error.pc; then

    gpgrt_libdir=$libdir_option_expanded

  else

    if crt1_path=$(${CC:-cc} -print-file-name=crt1.o 2>/dev/null); then

      if possible_libdir=$(cd ${crt1_path%/*} && pwd 2>/dev/null); then

        if test -f $possible_libdir/pkgconfig/gpg-error.pc; then

          gpgrt_libdir=$possible_libdir

        fi

      fi

    fi

  fi

  if test "$GPG_ERROR_CONFIG" = "no" -a -n "$gpgrt_libdir"; then

    AC_PATH_PROG(GPGRT_CONFIG, gpgrt-config, no)

    if test "$GPGRT_CONFIG" = "no"; then

      unset GPGRT_CONFIG

    else

      GPGRT_CONFIG="$GPGRT_CONFIG --libdir=$gpgrt_libdir"

      if $GPGRT_CONFIG gpg-error >/dev/null 2>&1; then

        GPG_ERROR_CONFIG="$GPGRT_CONFIG gpg-error"

        AC_MSG_NOTICE([Use gpgrt-config with $gpgrt_libdir as gpg-error-config])

        gpg_error_config_version=`$GPG_ERROR_CONFIG --modversion`

      else

        unset GPGRT_CONFIG

      fi

    fi

  else

    gpg_error_config_version=`$GPG_ERROR_CONFIG --version`

  fi

  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/'`

    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

    if test -z "$GPGRT_CONFIG" -a -n "$gpgrt_libdir"; then

      if test "$major" -gt 1 -o "$major" -eq 1 -a "$minor" -ge 33; then

        AC_PATH_PROG(GPGRT_CONFIG, gpgrt-config, no)

        if test "$GPGRT_CONFIG" = "no"; then

          unset GPGRT_CONFIG

        else

          GPGRT_CONFIG="$GPGRT_CONFIG --libdir=$gpgrt_libdir"

          if $GPGRT_CONFIG gpg-error >/dev/null 2>&1; then

            GPG_ERROR_CONFIG="$GPGRT_CONFIG gpg-error"

            AC_MSG_NOTICE([Use gpgrt-config with $gpgrt_libdir as gpg-error-config])

          else

            unset GPGRT_CONFIG

          fi

        fi

      fi

    fi

  fi

  AC_MSG_CHECKING(for GPG Error - version >= $min_gpg_error_version)

  if test $ok = yes; then

    GPG_ERROR_CFLAGS=`$GPG_ERROR_CONFIG --cflags`

    GPG_ERROR_LIBS=`$GPG_ERROR_CONFIG --libs`

    if test -z "$GPGRT_CONFIG"; then

      GPG_ERROR_MT_CFLAGS=`$GPG_ERROR_CONFIG --mt --cflags 2>/dev/null`

      GPG_ERROR_MT_LIBS=`$GPG_ERROR_CONFIG --mt --libs 2>/dev/null`

    else

      GPG_ERROR_MT_CFLAGS=`$GPG_ERROR_CONFIG --variable=mtcflags 2>/dev/null`

      GPG_ERROR_MT_CFLAGS="$GPG_ERROR_CFLAGS${GPG_ERROR_CFLAGS:+ }$GPG_ERROR_MT_CFLAGS"

      GPG_ERROR_MT_LIBS=`$GPG_ERROR_CONFIG --variable=mtlibs 2>/dev/null`

      GPG_ERROR_MT_LIBS="$GPG_ERROR_LIBS${GPG_ERROR_LIBS:+ }$GPG_ERROR_MT_LIBS"

    fi

    AC_MSG_RESULT([yes ($gpg_error_config_version)])

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

    if test -z "$GPGRT_CONFIG"; then

      gpg_error_config_host=`$GPG_ERROR_CONFIG --host 2>/dev/null || echo none`

    else

      gpg_error_config_host=`$GPG_ERROR_CONFIG --variable=host 2>/dev/null || echo none`

    fi

    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-libgpg-error-prefix

*** to specify a matching config script or use \$SYSROOT.

***]])

        gpg_config_script_warn="$gpg_config_script_warn libgpg-error"

      fi

    fi

  else

    GPG_ERROR_CFLAGS=""

    GPG_ERROR_LIBS=""

    GPG_ERROR_MT_CFLAGS=""

    GPG_ERROR_MT_LIBS=""

    AC_MSG_RESULT(no)

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

  fi

  AC_SUBST(GPG_ERROR_CFLAGS)

  AC_SUBST(GPG_ERROR_LIBS)

  AC_SUBST(GPG_ERROR_MT_CFLAGS)

  AC_SUBST(GPG_ERROR_MT_LIBS)

])