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AssureOutOfSourceBuilds.txt
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AssureOutOfSourceBuilds.txt
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#
# Copyright 2010 Kent Williams, University of Iowa
# Copyright 2020 Vedad Hadžić, Graz University of Technology
#
# 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.
#
# Notice: This is simplified and adapted from:
# https://github.com/InsightSoftwareConsortium/ITK/commits/master/CMake/PreventInSourceBuilds.cmake
function(AssureOutOfSourceBuilds)
# make sure the user doesn't play dirty with symlinks
get_filename_component(srcdir "${CMAKE_SOURCE_DIR}" REALPATH)
get_filename_component(bindir "${CMAKE_BINARY_DIR}" REALPATH)
# disallow in-source builds
if(${srcdir} STREQUAL ${bindir})
message("######################################################")
message("You are attempting to build in your Source Directory.")
message("You must run cmake from a build directory.")
message("######################################################")
file(REMOVE_RECURSE "${CMAKE_SOURCE_DIR}/CMakeCache.txt" "${CMAKE_SOURCE_DIR}/CMakeFiles")
message(FATAL_ERROR "Attempted to run an in-source build.")
endif()
endfunction()