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Use find_package COMPONENTS to select shared/static + datatype

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This commit is contained in:
Anonymous Maarten
2020-10-30 17:57:05 +01:00
parent 2d5de8378c
commit 1487038a8a
3 changed files with 87 additions and 14 deletions
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74
kissfft-config.cmake.in
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@ -1,12 +1,82 @@
# kissfft-config.ccmake accept the following components:
#
# SHARED/STATIC:
# This components allows one to choose a shared/static kissfft library.
# The default is selected by BUILD_SHARED_LIBS.
# They are to be used exclusively. Using them together is an error.
#
# example:
# find_package(kissfft CONFIG REQUIRED COMPONENTS STATIC)
#
# simd/int16/int32/float/double:
# This components allows one to choose the datatype.
# When using this component, the target kissfft::kissfft becomes available.
# When not using this component, you will have to choose the correct kissfft target.
#
# example:
# find_package(kissfft CONFIG REQUIRED)
# # - kissfft::kissfft-float, kissfft::kissfft-int32_t/ ... are available (if they are installed)
# # - kissfft::kissfft is not available,
#
# find_package(kissfft CONFIG REQUIRED COMPONENTS int32_t)
# # - kissfft::kissfft-float, kissfft::kissfft-int32_t/ ... are available (if they are installed)
# # - kissfft::kissfft is available (as an alias for kissfft::kissfft-int32_t),
@PACKAGE_INIT@
cmake_minimum_required(VERSION 3.3)
# Set include glob of config files using SHARED/static component, BUILD_SHARED_LIBS by default
set(_kissfft_shared_detected OFF)
set(_kissfft_shared ${BUILD_SHARED_LIBS})
if("SHARED" IN_LIST kissfft_FIND_COMPONENTS)
set(_kissfft_shared_detected ON)
set(_kissfft_shared ON)
endif()
if("STATIC" IN_LIST kissfft_FIND_COMPONENTS)
if(_kissfft_shared_detected)
message(FATAL_ERROR "SHARED and STATIC components cannot be used together")
endif()
set(_kissfft_shared_detected ON)
set(_kissfft_shared OFF)
endif()
if(_kissfft_shared)
set(_kissfft_config_glob "kissfft-*-shared-targets.cmake")
else()
set(_kissfft_config_glob "kissfft-*-static-targets.cmake")
endif()
# Load information for all configured kissfft
get_filename_component(_DIR "${CMAKE_CURRENT_LIST_FILE}" PATH)
file(GLOB CONFIG_FILES "${_DIR}/kissfft-*-targets.cmake")
file(GLOB CONFIG_FILES "${_DIR}/${_kissfft_config_glob}")
foreach(f ${CONFIG_FILES})
include(${f})
endforeach()
# If a datatype component is passed, create kissfft::kissfft
set(_kissfft_datatype_detected)
foreach(_kissfft_datatype simd int16 int32 float double)
if(_kissfft_datatype IN_LIST kissfft_FIND_COMPONENTS)
if(_kissfft_datatype_detected)
message(FATAL_ERROR "Cannot define datatype COMPONENT twice: ${_kissfft_datatype_detected} and ${_kissfft_datatype}")
endif()
set(_kissfft_datatype_detected ${_kissfft_datatype})
endif()
endforeach()
if(_kissfft_datatype_detected)
if(NOT TARGET kissfft::kissfft-${_kissfft_datatype_detected})
message(FATAL_ERROR "kissfft with datatype=${_kissfft_datatype_detected} is not installed")
endif()
if(TARGET kissfft::kissfft)
message(SEND_ERROR "kissfft::kissfft already exists. You cannot use 2 find_package's with datatype that are visible to eachother.")
else()
add_library(kissfft::kissfft INTERFACE IMPORTED)
set_property(TARGET kissfft::kissfft PROPERTY INTERFACE_LINK_LIBRARIES kissfft::kissfft-${_kissfft_datatype_detected})
endif()
endif()
set(kissfft_FOUND ON)
set(KISSFFT_VERSION @kissfft_VERSION@)
check_required_components(kissfft)