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Cmake 3.16 de-facto minimum version (#7049)

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This commit is contained in:
Derek Bailey
2022-01-30 12:56:16 -08:00
committed by GitHub
parent 7089c9ecdd
commit dd8fccfb1b
2 changed files with 804 additions and 31 deletions
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61
CMakeLists.txt
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@@ -1,5 +1,20 @@
# This is the legacy minimum version flatbuffers supported for a while.
cmake_minimum_required(VERSION 2.8.12)
# CMake version 3.16 is the 'de-facto' minimum version for flatbuffers. If the
# current cmake is older than this, warn the user and include the legacy file to
# provide some level of support.
if(CMAKE_VERSION VERSION_LESS 3.16)
message(WARNING "Using cmake version ${CMAKE_VERSION} which is older than "
"our target version of 3.16. This will use the legacy CMakeLists.txt that "
"supports version 2.8.12 and higher, but not actively maintained. Consider "
"upgrading cmake to a newer version, as this may become a fatal error in the "
"future.")
# Use the legacy version of CMakeLists.txt
include(CMake/CMakeLists_legacy.cmake.in)
return()
endif()
if (POLICY CMP0048)
cmake_policy(SET CMP0048 NEW)
project(FlatBuffers
@@ -649,18 +664,11 @@ if(FLATBUFFERS_INSTALL)
)
if(FLATBUFFERS_BUILD_FLATLIB)
if(CMAKE_VERSION VERSION_LESS 3.0)
install(
TARGETS flatbuffers EXPORT FlatbuffersTargets
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
)
else()
install(
TARGETS flatbuffers EXPORT FlatbuffersTargets
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)
endif()
install(
TARGETS flatbuffers EXPORT FlatbuffersTargets
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)
install(EXPORT FlatbuffersTargets
FILE FlatbuffersTargets.cmake
@@ -684,24 +692,15 @@ if(FLATBUFFERS_INSTALL)
endif()
if(FLATBUFFERS_BUILD_SHAREDLIB)
if(CMAKE_VERSION VERSION_LESS 3.0)
install(
TARGETS flatbuffers_shared EXPORT FlatbuffersSharedTargets
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
)
else()
install(
TARGETS flatbuffers_shared EXPORT FlatbuffersSharedTargets
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)
endif()
install(
TARGETS flatbuffers_shared EXPORT FlatbuffersSharedTargets
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)
install(
install(
EXPORT FlatbuffersSharedTargets
FILE FlatbuffersSharedTargets.cmake
NAMESPACE flatbuffers::
@@ -755,7 +754,7 @@ if(UNIX)
endif()
# Include for running Google Benchmarks.
if(FLATBUFFERS_BUILD_BENCHMARKS AND CMAKE_VERSION VERSION_GREATER 3.13)
if(FLATBUFFERS_BUILD_BENCHMARKS)
add_subdirectory(benchmarks)
endif()
@@ -765,4 +764,4 @@ add_library(FlatBuffers::FlatBuffers ALIAS FlatBuffers)
target_include_directories(
FlatBuffers
INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/include>)
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/include>)