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https://github.com/blender/blender
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48c15c655a
Functions scope their variables, macros don't. Use functions for better variable hygiene, with `PARENT_SCOPE` where output variables need to propagate. This avoids the need to `unset(...)` every local variable which is easy to forget - leaking variables into the callers scope. Macros that must remain (flag modification, `find_package` forwarding, paired state, caller-scope `return()`) are annotated with the reason in their doc-strings.
20 lines
635 B
CMake
20 lines
635 B
CMake
# SPDX-FileCopyrightText: 2022 Blender Authors
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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# shorthand to only unpack a certain dependency
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function(unpack_only name)
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string(TOUPPER ${name} UPPER_NAME)
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set(TARGET_FILE ${${UPPER_NAME}_FILE})
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set(TARGET_HASH_TYPE ${${UPPER_NAME}_HASH_TYPE})
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set(TARGET_HASH ${${UPPER_NAME}_HASH})
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ExternalProject_Add(external_${name}
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URL file://${PACKAGE_DIR}/${TARGET_FILE}
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URL_HASH ${TARGET_HASH_TYPE}=${TARGET_HASH}
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DOWNLOAD_DIR ${DOWNLOAD_DIR}
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PREFIX ${BUILD_DIR}/${name}
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CONFIGURE_COMMAND echo .
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BUILD_COMMAND echo .
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INSTALL_COMMAND echo .
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)
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endfunction()
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