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# This script provides download related helper macro and sets up download
# environment.
#-----------------------------------------------------------------------------
# Forbid downloading resources from the network during a build. This helps
# when building on systems without network connectivity to determine which
# resources must be obtained manually and made available to the build.
#
option(ITK_FORBID_DOWNLOADS "Do not download source code or data from the network" OFF)
mark_as_advanced(ITK_FORBID_DOWNLOADS)
macro(itk_download_attempt_check _name)
if(ITK_FORBID_DOWNLOADS)
message(SEND_ERROR "Attempted to download ${_name} when ITK_FORBID_DOWNLOADS is ON")
endif()
endmacro()
#-----------------------------------------------------------------------------
# Git protocol setup
#
if(NOT ITK_FORBID_DOWNLOADS)
find_package(Git)
set(ITK_USE_GIT_PROTOCOL_default "OFF")
if (GIT_VERSION_STRING VERSION_LESS "1.7.10")
# minimum version for https support
set(ITK_USE_GIT_PROTOCOL_default "ON")
endif()
option(ITK_USE_GIT_PROTOCOL "If behind a firewall turn this off to use https instead." ${ITK_USE_GIT_PROTOCOL_default})
mark_as_advanced(ITK_USE_GIT_PROTOCOL)
set(git_protocol "https")
if(ITK_USE_GIT_PROTOCOL)
set(git_protocol "git")
endif()
endif()
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