dnl Autoconf macros for libgpg-error

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,
[ AC_ARG_WITH(gpg-error-prefix,
            AC_HELP_STRING([--with-gpg-error-prefix=PFX],
                           [prefix where GPG Error is installed (optional)]),
     gpg_error_config_prefix="$withval", gpg_error_config_prefix="")
  if test x$gpg_error_config_prefix != x ; then
     gpg_error_config_args="$gpg_error_config_args --prefix=$gpg_error_config_prefix"
     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)
  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)
    ifelse([$2], , :, [$2])
  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)
])

dnl Usage:
dnl   GTK_DOC_CHECK([minimum-gtk-doc-version])
AC_DEFUN([GTK_DOC_CHECK],
[
  AC_BEFORE([AC_PROG_LIBTOOL],[$0])dnl setup libtool first
  AC_BEFORE([AM_PROG_LIBTOOL],[$0])dnl setup libtool first
  dnl for overriding the documentation installation directory
  AC_ARG_WITH(html-dir,
    AC_HELP_STRING([--with-html-dir=PATH], [path to installed docs]),,
    [with_html_dir='${datadir}/gtk-doc/html'])
  HTML_DIR="$with_html_dir"
  AC_SUBST(HTML_DIR)

  dnl enable/disable documentation building
  AC_ARG_ENABLE(gtk-doc,
    AC_HELP_STRING([--enable-gtk-doc],
                   [use gtk-doc to build documentation [default=no]]),,
    enable_gtk_doc=no)

  have_gtk_doc=no
  if test -z "$PKG_CONFIG"; then
    AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
  fi
  if test "$PKG_CONFIG" != "no" && $PKG_CONFIG --exists gtk-doc; then
    have_gtk_doc=yes
  fi

  dnl do we want to do a version check?
ifelse([$1],[],,
  [gtk_doc_min_version=$1
  if test "$have_gtk_doc" = yes; then
    AC_MSG_CHECKING([gtk-doc version >= $gtk_doc_min_version])
    if $PKG_CONFIG --atleast-version $gtk_doc_min_version gtk-doc; then
      AC_MSG_RESULT(yes)
    else
      AC_MSG_RESULT(no)
      have_gtk_doc=no
    fi
  fi
])
  if test x$enable_gtk_doc = xyes; then
    if test "$have_gtk_doc" != yes; then
      enable_gtk_doc=no
    fi
  fi

  AM_CONDITIONAL(ENABLE_GTK_DOC, test x$enable_gtk_doc = xyes)
  AM_CONDITIONAL(GTK_DOC_USE_LIBTOOL, test -n "$LIBTOOL")
])