# Central location to check for cmake (version) requirements

#

#=============================================================================

# Copyright 2012 Bernhard Miklautz <bernhard.miklautz@thincast.com>

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#     http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

#=============================================================================

macro(enable_cmake_compat CMVERSION)

	if(${CMAKE_VERSION} VERSION_LESS ${CMVERSION})

		LIST(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/compat_${CMVERSION}/")

	endif()

endmacro()

# Compatibility includes - order does matter!

enable_cmake_compat(3.7.0)

enable_cmake_compat(2.8.11)

enable_cmake_compat(2.8.6)

enable_cmake_compat(2.8.3)

enable_cmake_compat(2.8.2)

# GetGitRevisionDescription requires FindGit which was added in version 2.8.2

# build won't fail but GIT_REVISION is set to n/a

if(${CMAKE_VERSION} VERSION_LESS 2.8.2)

	message(WARNING "GetGitRevisionDescription reqires (FindGit) cmake >= 2.8.2 to work properly - GIT_REVISION will be set to n/a")

endif()

# Since cmake 2.8.9 modules/library names without lib/.so can be used

# for dependencies

if(IOS AND ${CMAKE_VERSION} VERSION_LESS 2.8.9)

	message(FATAL_ERROR "CMAKE version >= 2.8.9 required to build the IOS client")

endif()