mirror of
https://github.com/facebook/sapling.git
synced 2024-10-07 07:17:55 +03:00
Move CheckAtomic cmake module out of the shared cmake dir
Summary: Remove the shared CheckAtomic cmake module out of the shared dir and back to the projects that need it. Reviewed By: lukaspiatkowski Differential Revision: D19553656 fbshipit-source-id: 5e89b5b9448ef6d6c57ef904a652e9f9a1d5dbb3
This commit is contained in:
parent
78814efd95
commit
3e7d877598
@ -1,93 +0,0 @@
|
|||||||
# University of Illinois/NCSA
|
|
||||||
# Open Source License
|
|
||||||
#
|
|
||||||
# Copyright (c) 2003-2017 University of Illinois at Urbana-Champaign.
|
|
||||||
# All rights reserved.
|
|
||||||
#
|
|
||||||
# Developed by:
|
|
||||||
#
|
|
||||||
# LLVM Team
|
|
||||||
#
|
|
||||||
# University of Illinois at Urbana-Champaign
|
|
||||||
#
|
|
||||||
# http://llvm.org
|
|
||||||
#
|
|
||||||
# Permission is hereby granted, free of charge, to any person obtaining a copy of
|
|
||||||
# this software and associated documentation files (the "Software"), to deal with
|
|
||||||
# the Software without restriction, including without limitation the rights to
|
|
||||||
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
|
|
||||||
# of the Software, and to permit persons to whom the Software is furnished to do
|
|
||||||
# so, subject to the following conditions:
|
|
||||||
#
|
|
||||||
# * Redistributions of source code must retain the above copyright notice,
|
|
||||||
# this list of conditions and the following disclaimers.
|
|
||||||
#
|
|
||||||
# * Redistributions in binary form must reproduce the above copyright notice,
|
|
||||||
# this list of conditions and the following disclaimers in the
|
|
||||||
# documentation and/or other materials provided with the distribution.
|
|
||||||
#
|
|
||||||
# * Neither the names of the LLVM Team, University of Illinois at
|
|
||||||
# Urbana-Champaign, nor the names of its contributors may be used to
|
|
||||||
# endorse or promote products derived from this Software without specific
|
|
||||||
# prior written permission.
|
|
||||||
#
|
|
||||||
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
||||||
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
|
||||||
# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
||||||
# CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
||||||
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
||||||
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
|
|
||||||
# SOFTWARE.
|
|
||||||
|
|
||||||
include(CheckCXXSourceCompiles)
|
|
||||||
|
|
||||||
# Sometimes linking against libatomic is required for atomic ops, if
|
|
||||||
# the platform doesn't support lock-free atomics.
|
|
||||||
|
|
||||||
function(check_working_cxx_atomics varname)
|
|
||||||
set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
|
|
||||||
get_directory_property(compile_options COMPILE_OPTIONS)
|
|
||||||
set(CMAKE_REQUIRED_FLAGS ${compile_options})
|
|
||||||
CHECK_CXX_SOURCE_COMPILES("
|
|
||||||
#include <atomic>
|
|
||||||
int main() {
|
|
||||||
struct Test { int val; };
|
|
||||||
std::atomic<Test> s;
|
|
||||||
s.is_lock_free();
|
|
||||||
}" ${varname})
|
|
||||||
set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS})
|
|
||||||
endfunction(check_working_cxx_atomics)
|
|
||||||
|
|
||||||
|
|
||||||
if(NOT DEFINED PROXYGEN_COMPILER_IS_GCC_COMPATIBLE)
|
|
||||||
if(CMAKE_COMPILER_IS_GNUCXX)
|
|
||||||
set(PROXYGEN_COMPILER_IS_GCC_COMPATIBLE ON)
|
|
||||||
elseif(MSVC)
|
|
||||||
set(PROXYGEN_COMPILER_IS_GCC_COMPATIBLE OFF)
|
|
||||||
elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
|
|
||||||
set(PROXYGEN_COMPILER_IS_GCC_COMPATIBLE ON)
|
|
||||||
elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Intel")
|
|
||||||
set(PROXYGEN_COMPILER_IS_GCC_COMPATIBLE ON)
|
|
||||||
endif()
|
|
||||||
endif()
|
|
||||||
|
|
||||||
# This isn't necessary on MSVC, so avoid command-line switch annoyance
|
|
||||||
# by only running on GCC-like hosts.
|
|
||||||
if(PROXYGEN_COMPILER_IS_GCC_COMPATIBLE)
|
|
||||||
# First check if atomics work without the library.
|
|
||||||
check_working_cxx_atomics(HAVE_CXX_ATOMICS_WITHOUT_LIB)
|
|
||||||
# If not, check if the library exists, and atomics work with it.
|
|
||||||
if(NOT HAVE_CXX_ATOMICS_WITHOUT_LIB)
|
|
||||||
check_library_exists(atomic __atomic_fetch_add_4 "" HAVE_LIBATOMIC)
|
|
||||||
if(HAVE_LIBATOMIC)
|
|
||||||
list(APPEND CMAKE_REQUIRED_LIBRARIES "atomic")
|
|
||||||
check_working_cxx_atomics(HAVE_CXX_ATOMICS_WITH_LIB)
|
|
||||||
if (NOT HAVE_CXX_ATOMICS_WITH_LIB)
|
|
||||||
message(FATAL_ERROR "Host compiler must support std::atomic!")
|
|
||||||
endif()
|
|
||||||
list(APPEND CMAKE_CXX_STANDARD_LIBRARIES -latomic)
|
|
||||||
else()
|
|
||||||
message(FATAL_ERROR "Host compiler appears to require libatomic, but cannot find it.")
|
|
||||||
endif()
|
|
||||||
endif()
|
|
||||||
endif()
|
|
Loading…
Reference in New Issue
Block a user