forked from mpusz/mp-units
55 lines
2.0 KiB
CMake
55 lines
2.0 KiB
CMake
# The MIT License (MIT)
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#
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# Copyright (c) 2018 Mateusz Pusz
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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function(__check_libcxx_in_use variable)
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if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
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message(CHECK_START "Checking if libc++ is being used")
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list(APPEND CMAKE_MESSAGE_INDENT " ")
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include(CheckCXXSymbolExists)
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check_cxx_symbol_exists(_LIBCPP_VERSION "ciso646" ${variable})
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set(${variable} ${${variable}} PARENT_SCOPE)
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list(POP_BACK CMAKE_MESSAGE_INDENT)
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if(${variable})
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message(CHECK_PASS "found")
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else()
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message(CHECK_FAIL "not found")
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endif()
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endif()
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endfunction()
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include(CMakeFindDependencyMacro)
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find_dependency(fmt)
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find_dependency(gsl-lite)
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# add range-v3 dependency only for clang + libc++
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if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
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__check_libcxx_in_use(__units_libcxx)
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if(__units_libcxx)
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find_dependency(range-v3)
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endif()
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unset(__units_libcxx)
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endif()
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include("${CMAKE_CURRENT_LIST_DIR}/mp-unitsTargets.cmake")
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