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Fix a link error when the version of gcc < 9 (#946)

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An Tao 2021-07-22 21:25:25 +08:00 committed by GitHub
parent 25cba9a2a5
commit 895ab63937
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1 changed files with 5 additions and 0 deletions
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5
CMakeLists.txt
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@ -143,11 +143,16 @@ elseif (DROGON_CXX_STANDARD EQUAL 17)
# With C++17, use Boost if std::filesystem::path is missing
message(STATUS "use c++17")
# Check for partial implementation of c++17 (Windows/OSX only?)
set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
try_compile(check_filesystem_path ${CMAKE_BINARY_DIR}/cmaketest
${PROJECT_SOURCE_DIR}/cmake/tests/check_has_std_filesystem_path.cc
CXX_STANDARD 17)
set(CMAKE_TRY_COMPILE_TARGET_TYPE)
if (check_filesystem_path)
message(STATUS "Using c++17 filesytem::path")
if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
target_link_libraries(${PROJECT_NAME} PUBLIC stdc++fs)
endif()
else()
find_package(Boost 1.49.0 COMPONENTS filesystem system REQUIRED)
message(STATUS "Using Boost filesytem::path")