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Diffstat (limited to 'src/seastar/cmake/FindStdAtomic.cmake')
| -rw-r--r-- | src/seastar/cmake/FindStdAtomic.cmake | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/seastar/cmake/FindStdAtomic.cmake b/src/seastar/cmake/FindStdAtomic.cmake new file mode 100644 index 00000000..2d14c0b2 --- /dev/null +++ b/src/seastar/cmake/FindStdAtomic.cmake @@ -0,0 +1,51 @@ +# +# This file is open source software, licensed to you under the terms +# of the Apache License, Version 2.0 (the "License"). See the NOTICE file +# distributed with this work for additional information regarding copyright +# ownership. You may not use this file except in compliance with the License. +# +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. +# + +# +# Copyright (C) 2019 Scylladb, Ltd. +# + +function (_stdatomic_can_link var) + include (CheckCXXSourceCompiles) + set (test_code "int main() {}") + set (CMAKE_REQUIRED_LIBRARIES -latomic) + check_cxx_source_compiles ("${test_code}" ${var}) +endfunction () + +_stdatomic_can_link (StdAtomic_EXPLICIT_LINK) + +# +# If linking against `-latomic` is successful, then do it unconditionally. +# + +if (StdAtomic_EXPLICIT_LINK) + set (StdAtomic_LIBRARY_NAME atomic) + set (StdAtomic_LIBRARIES -l${StdAtomic_LIBRARY_NAME}) + include (FindPackageHandleStandardArgs) + + find_package_handle_standard_args (StdAtomic + REQUIRED_VARS StdAtomic_LIBRARIES) +endif () + +if (NOT (TARGET StdAtomic::atomic)) + add_library (StdAtomic::atomic INTERFACE IMPORTED) + + set_target_properties (StdAtomic::atomic + PROPERTIES + INTERFACE_LINK_LIBRARIES "${StdAtomic_LIBRARIES}") +endif () |