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#
# Copyright (C) 2005-2020 Centre National d'Etudes Spatiales (CNES)
#
# This file is part of Orfeo Toolbox
#
# https://www.orfeo-toolbox.org/
#
# 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.
#
#
# This function will prevent in-source builds
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("# OTB should not be configured & built in the OTB source directory")
message("# You must run cmake in a build directory outside of the source tree.")
message("# See the software guide documentation for example build commands.")
message("# ")
message("# NOTE: Given that you already tried to make an in-source build")
message("# CMake has already created several files & directories")
message("# in your source tree. Run 'git status' to find them and")
message("# remove them.")
message("######################################################")
message(FATAL_ERROR "Quitting configuration")
endif()
endfunction()
AssureOutOfSourceBuilds()
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