## $Id$
#
# Copyright (C) 2009, 2010, 2012, 2013, 2014 Peter Johansson
#
# This file is part of the yat library, http://dev.thep.lu.se/yat
#
# The yat library is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 3 of the
# License, or (at your option) any later version.
#
# The yat library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with yat. If not, see <http://www.gnu.org/licenses/>.
#

#
# This file contains some small useful macros.
#
# serial 3 (yat 0.11)
#


# YAT_ECHO_LOG(STRING)
# ====================
# print STRING to config.log
AC_DEFUN([YAT_ECHO_LOG],
[
  AC_PREREQ([2.58])
  AS_ECHO(["$as_me:${as_lineno-$LINENO}: $1"]) >&AS_MESSAGE_LOG_FD
]) #YAT_ECHO_LOG


# YAT_RUN_LOG(COMMAND, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
# =========================================================
# run COMMAND and log the output, set status in $yat_status and log
# it. If status is zero execute ACTION-IF-TRUE, else execute
# ACTION-IF-FALSE and log stderror from COMMAND
AC_DEFUN([YAT_RUN_LOG],
[
  AC_PREREQ([2.58])
  m4_pushdef([COMMAND], [$1])
  YAT_ECHO_LOG([COMMAND])
  COMMAND >&AS_MESSAGE_LOG_FD 2>conftest.err
  yat_status=$?
  YAT_ECHO_LOG([status: $yat_status])
  AS_IF([test $yat_status = 0], [$2],
        [test -f conftest.err && cat conftest.err >&AS_MESSAGE_LOG_FD; $3])
  m4_popdef([COMMAND])
]) #YAT_RUN_LOG


# YAT_SET_CONTAINS(set, value, [if-present], [if-not-present])
# ============================================================
# Loop over set (space-separated) and if value exists, execute
# if-present. otherwise execute if-not-present
AC_DEFUN([YAT_SET_CONTAINS],
[
AS_IF([AS_ECHO([$1]) | tr ' ' '\n' | grep '^$2$' > /dev/null], [$3], [$4])
]) #YAT_SET_CONTAINS


# YAT_VAR_REMOVE(VAR, LIST)
# ==========================
# Loop over LIST (space-separated) and for each value, remove value from VAR.
AC_DEFUN([YAT_VAR_REMOVE],
[
AS_IF([test x"$2" != x], [
  for value in $2; do
    APR_REMOVEFROM([$1], [$value])
  done
])
])

# YAT_CHECK_LA_LIBS(CODE, LIBS, VALUE, VAR)
# ============================================
# Check if we can create a libtool archive based on CODE linking with
# LIBS. If not, add VALUE to VAR.
AC_DEFUN([YAT_CHECK_LA_LIBS],
[
save_LIBS=$LIBS
LIBS="$2"
AC_MSG_CHECKING([if libtool archive can be created with $LIBS])
YAT_LT_LINK_LA_IFELSE([$1],
  [AC_MSG_RESULT([yes])],
  [AC_MSG_RESULT([no])
   $4="$$4 $3"])
LIBS=$save_LIBS
])