# FasTC
# Copyright (c) 2014 University of North Carolina at Chapel Hill.
# All rights reserved.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for educational, research, and non-profit purposes, without
# fee, and without a written agreement is hereby granted, provided that the
# above copyright notice, this paragraph, and the following four paragraphs
# appear in all copies.
#
# Permission to incorporate this software into commercial products may be
# obtained by contacting the authors or the Office of Technology Development
# at the University of North Carolina at Chapel Hill <otd@unc.edu>.
#
# This software program and documentation are copyrighted by the University of
# North Carolina at Chapel Hill. The software program and documentation are
# supplied "as is," without any accompanying services from the University of
# North Carolina at Chapel Hill or the authors. The University of North
# Carolina at Chapel Hill and the authors do not warrant that the operation of
# the program will be uninterrupted or error-free. The end-user understands
# that the program was developed for research purposes and is advised not to
# rely exclusively on the program for any reason.
#
# IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE
# AUTHORS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
# OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF
# THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA
# AT CHAPEL HILL OR THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
# DAMAGE.
#
# THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY
# DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY 
# STATUTORY WARRANTY OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON
# AN "AS IS" BASIS, AND THE UNIVERSITY  OF NORTH CAROLINA AT CHAPEL HILL AND
# THE AUTHORS HAVE NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, 
# ENHANCEMENTS, OR MODIFICATIONS.
#
# Please send all BUG REPORTS to <pavel@cs.unc.edu>.
#
# The authors may be contacted via:
#
# Pavel Krajcevski
# Dept of Computer Science
# 201 S Columbia St
# Frederick P. Brooks, Jr. Computer Science Bldg
# Chapel Hill, NC 27599-3175
# USA
# 
# <http://gamma.cs.unc.edu/FasTC/>

CMAKE_MINIMUM_REQUIRED(VERSION 3.1 FATAL_ERROR)
PROJECT(FasTC CXX C)

SET(FasTC_MAJOR_VERSION 0)
SET(FasTC_MINOR_VERSION 0)
SET(FasTC_PATCH_VERSION 1)
SET(FasTC_VERSION ${FasTC_MAJOR_VERSION}.${FasTC_MINOR_VERSION}.${FasTC_PATCH_VERSION})

OPTION(TREAT_WARNINGS_AS_ERRORS "Treat compiler warnings as errors. We use the highest warnings levels for compilers." OFF)

IF(MSVC)
	SET(MSVC_INSTALL_PATH "${PROJECT_SOURCE_DIR}/Windows")
	SET(CMAKE_PREFIX_PATH "${CMAKE_PREFIX_PATH};${MSVC_INSTALL_PATH}")

	IF(${MSVC_VERSION} EQUAL 1600)
		SET(MSVC_VERSION_STRING vc100)
	ELSEIF(${MSVC_VERSION} EQUAL 1700)
		SET(MSVC_VERSION_STRING vc110)
	ELSEIF(${MSVC_VERSION} EQUAL 1800)
		SET(MSVC_VERSION_STRING vc120)
	ELSEIF(${MSVC_VERSION} EQUAL 1900)
		SET(MSVC_VERSION_STRING vc140)
	ELSEIF(${MSVC_VERSION} EQUAL 1500)
		SET(MSVC_VERSION_STRING vc90)
	ELSEIF(${MSVC_VERSION} EQUAL 1400)
		SET(MSVC_VERSION_STRING vc80)
	ENDIF()

	# !FIXME! Actually detect compiler architecture version....
	IF( CMAKE_SIZEOF_VOID_P EQUAL 8 )
		SET(MSVC_ARCHITECTURE_STRING x64)
	ELSE()
		SET(MSVC_ARCHITECTURE_STRING x86)
	ENDIF()

	SET(MSVC_LIB_DIR "${MSVC_INSTALL_PATH}/lib/${MSVC_ARCHITECTURE_STRING}/${MSVC_VERSION_STRING}")
	SET(CMAKE_LIBRARY_PATH "${CMAKE_LIBRARY_PATH};${MSVC_LIB_DIR}")

  SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
	SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")

ELSEIF(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)

  SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -fms-extensions")
  SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -fms-extensions")

ENDIF(MSVC)

IF(TREAT_WARNINGS_AS_ERRORS)
  IF(MSVC)
    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /WX")
    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /WX")
  ELSEIF(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
  ENDIF(MSVC)
ENDIF(TREAT_WARNINGS_AS_ERRORS)

SET(CMAKE_MODULE_PATH "${FasTC_SOURCE_DIR}/CMakeModules" ${CMAKE_MODULE_PATH})
FIND_PACKAGE(PVRTexLib)
FIND_PACKAGE(BC7Export)
FIND_PACKAGE(PNG)

######################################################################
##
## Package definitions 
##
######################################################################

SET(INCLUDE_INSTALL_DIR include CACHE INTERNAL "")
SET(LIB_INSTALL_DIR lib CACHE INTERNAL "")
SET(BIN_INSTALL_DIR bin CACHE INTERNAL "")

SET(FASTC_DIRECTORIES
  Base Core IO BPTCEncoder PVRTCEncoder DXTEncoder ETCEncoder ASTCEncoder
)

FOREACH(DIR ${FASTC_DIRECTORIES})
  ADD_SUBDIRECTORY(${DIR})
ENDFOREACH()
ADD_SUBDIRECTORY(CLTool)

SET(FasTC_LIBRARIES FasTCBase FasTCIO FasTCCore BPTCEncoder PVRTCEncoder DXTEncoder ETCEncoder ASTCEncoder)
SET(FasTC_EXECUTABLES tc compare decomp)

######################################################################
##
## Config
##
######################################################################

INCLUDE(CMakePackageConfigHelpers)
CONFIGURE_PACKAGE_CONFIG_FILE(
  "${FasTC_SOURCE_DIR}/CMakeModules/FasTCConfig.cmake.in"
  "${CMAKE_CURRENT_BINARY_DIR}/FasTCConfig.cmake"
  INSTALL_DESTINATION ${LIB_INSTALL_DIR}/cmake/FasTC
  PATH_VARS INCLUDE_INSTALL_DIR BIN_INSTALL_DIR LIB_INSTALL_DIR)

WRITE_BASIC_PACKAGE_VERSION_FILE(
  "${CMAKE_CURRENT_BINARY_DIR}/FasTCConfigVersion.cmake"
  VERSION ${FasTC_VERSION}
  COMPATIBILITY SameMajorVersion)

INSTALL(
  FILES "${CMAKE_CURRENT_BINARY_DIR}/FasTCConfigVersion.cmake" "${CMAKE_CURRENT_BINARY_DIR}/FasTCConfig.cmake"
  DESTINATION ${LIB_INSTALL_DIR}/cmake/FasTC
  COMPONENT dev)

EXPORT(
  TARGETS ${FasTC_LIBRARIES} ${FasTC_EXECUTABLES}
  FILE "${CMAKE_CURRENT_BINARY_DIR}/FasTCTargets.cmake")
EXPORT(PACKAGE FasTC)

INSTALL(
  EXPORT FasTCTargets
  FILE FasTCTargets.cmake
  DESTINATION ${LIB_INSTALL_DIR}/cmake/FasTC)

######################################################################
##
## Testing
##
######################################################################

ENABLE_TESTING()

IF(MSVC)
  SET(gtest_force_shared_crt TRUE CACHE BOOL "Used to properly select MSVC runtime libraries" FORCE)
ENDIF(MSVC)

ADD_SUBDIRECTORY(GTest)
FOREACH(DIR ${FASTC_DIRECTORIES})
  SET(TESTDIR ${FasTC_SOURCE_DIR}/${DIR}/test)
  IF(IS_DIRECTORY ${TESTDIR})
    ADD_SUBDIRECTORY(${TESTDIR})
  ENDIF()
ENDFOREACH()