50 lines
2.2 KiB
CMake
50 lines
2.2 KiB
CMake
# Copyright The OpenTelemetry Authors
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# SPDX-License-Identifier: Apache-2.0
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function(get_directory_name_in_path PATH_VAR RESULT_VAR)
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# get_filename_component does not work with paths ending in / or \, so remove it.
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string(REGEX REPLACE "[/\\]$" "" PATH_TRIMMED "${PATH_VAR}")
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get_filename_component(DIR_NAME ${PATH_TRIMMED} NAME)
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set(${RESULT_VAR} "${DIR_NAME}" PARENT_SCOPE)
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endfunction()
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# Enable building external components through otel-cpp build
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# The config options are
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# - OPENTELEMETRY_EXTERNAL_COMPONENT_PATH - Setting local paths of the external
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# component as env variable. Multiple paths can be set by separating them with.
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# - OPENTELEMETRY_EXTERNAL_COMPONENT_URL Setting github-repo of external component
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# as env variable
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# Add custom vendor component from local path, or GitHub repo
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# Prefer CMake option, then env variable, then URL.
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if(OPENTELEMETRY_EXTERNAL_COMPONENT_PATH)
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# Add custom component path to build tree and consolidate binary artifacts in
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# current project binary output directory.
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foreach(DIR IN LISTS OPENTELEMETRY_EXTERNAL_COMPONENT_PATH)
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get_directory_name_in_path(${DIR} EXTERNAL_EXPORTER_DIR_NAME)
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add_subdirectory(${DIR} ${PROJECT_BINARY_DIR}/external/${EXTERNAL_EXPORTER_DIR_NAME})
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endforeach()
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elseif(DEFINED ENV{OPENTELEMETRY_EXTERNAL_COMPONENT_PATH})
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# Add custom component path to build tree and consolidate binary artifacts in
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# current project binary output directory.
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set(OPENTELEMETRY_EXTERNAL_COMPONENT_PATH_VAR $ENV{OPENTELEMETRY_EXTERNAL_COMPONENT_PATH})
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foreach(DIR IN LISTS OPENTELEMETRY_EXTERNAL_COMPONENT_PATH_VAR)
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get_directory_name_in_path(${DIR} EXTERNAL_EXPORTER_DIR_NAME)
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add_subdirectory(${DIR} ${PROJECT_BINARY_DIR}/external/${EXTERNAL_EXPORTER_DIR_NAME})
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endforeach()
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elseif(DEFINED $ENV{OPENTELEMETRY_EXTERNAL_COMPONENT_URL})
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# This option requires CMake 3.11+: add standard remote repo to build tree.
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include(FetchContent)
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FetchContent_Declare(
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external
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GIT_REPOSITORY $ENV{OPENTELEMETRY_EXTERNAL_COMPONENT_URL}
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GIT_TAG "main")
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FetchContent_GetProperties(external)
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if(NOT external_POPULATED)
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FetchContent_Populate(external)
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add_subdirectory(${external_SOURCE_DIR})
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endif()
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endif()
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