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Jacob Wujciak-JensandSutou Kouhei
093655c607
### Rationale for this change Abseil's recommended usage is to build from trunk, this version does not provide a package version in CMake which breaks `resolve_dependency`. ### What changes are included in this PR? Add `FindabslAlt.cmake` that adds a big version if it is missing to compare against our minimal version requirements. ### Are these changes tested? CI ### Are there any user-facing changes? Abseil build from head should now work without workaround. * GitHub Issue: #44606 Lead-authored-by: Jacob Wujciak-Jens <jacob@wujciak.de> Co-authored-by: Sutou Kouhei <kou@cozmixng.org> Signed-off-by: Jacob Wujciak-Jens <jacob@wujciak.de>
47 lines
1.5 KiB
CMake
47 lines
1.5 KiB
CMake
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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if(abslAlt_FOUND)
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return()
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endif()
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set(find_package_args)
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if(abslAlt_FIND_QUIETLY)
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list(APPEND find_package_args QUIET)
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endif()
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if(abslAlt_FIND_REQUIRED)
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list(APPEND find_package_args REQUIRED)
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endif()
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find_package(absl ${find_package_args})
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if(NOT DEFINED absl_VERSION)
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# Abseil does not define a version when build 'live at head'.
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# As this is their recommended path we need to define a large version to pass version checks.
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# CMake removes the '_head' suffix for version comparison but it will show up in the logs
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# and matches the abseil-cpp.pc version of 'head'
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set(absl_VERSION 99999999_head)
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endif()
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set(abslAlt_VERSION ${absl_VERSION})
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find_package_handle_standard_args(
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abslAlt
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REQUIRED_VARS absl_FOUND
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VERSION_VAR abslAlt_VERSION)
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