#

# Copyright © 2015 Hasan Yavuz Özderya

#

# This file is part of serialplot.

#

# serialplot 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.

#

# serialplot 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 serialplot.  If not, see <http://www.gnu.org/licenses/>.

#

#

# Note: This module will only find local Qwt installations in

# /usr/local/qwt-VERSION directories.

#

if(qwt_glob_dir)

  foreach(qwt_path ${qwt_glob_dir})

	# find the qwt_global.h file

	unset(qwt_root CACHE)

	find_path(qwt_root

	  "include/qwt_global.h"

	  HINTS "${qwt_path}")

	if(qwt_root)

	  list(APPEND qwt_roots ${qwt_root})

	endif(qwt_root)

  endforeach(qwt_path)

endif(qwt_glob_dir)

# select qwt root according to version

if(qwt_roots)

  foreach(qwt_root ${qwt_roots})

	# extract the version information

	unset(qwt_version_string)

	file(STRINGS "${qwt_root}/include/qwt_global.h" qwt_version_string

	  REGEX "#define[ \t]+QWT_VERSION_STR")

	if(qwt_version_string)

	  string(REGEX REPLACE "[^\"]*\"([0-9.]+)\".*" "\\1"

		qwt_version_string ${qwt_version_string})