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161 lines
3.5 KiB
161 lines
3.5 KiB
# Copyright (c) 2023-present The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or https://opensource.org/license/mit/.
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include(CheckCXXSourceCompiles)
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include(CheckCXXSymbolExists)
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include(CheckIncludeFileCXX)
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# The following HAVE_{HEADER}_H variables go to the bitcoin-config.h header.
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check_include_file_cxx(sys/prctl.h HAVE_SYS_PRCTL_H)
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check_include_file_cxx(sys/resources.h HAVE_SYS_RESOURCES_H)
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check_include_file_cxx(sys/vmmeter.h HAVE_SYS_VMMETER_H)
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check_include_file_cxx(vm/vm_param.h HAVE_VM_VM_PARAM_H)
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check_cxx_symbol_exists(O_CLOEXEC "fcntl.h" HAVE_O_CLOEXEC)
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check_cxx_symbol_exists(fdatasync "unistd.h" HAVE_FDATASYNC)
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check_cxx_symbol_exists(fork "unistd.h" HAVE_DECL_FORK)
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check_cxx_symbol_exists(pipe2 "unistd.h" HAVE_DECL_PIPE2)
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check_cxx_symbol_exists(setsid "unistd.h" HAVE_DECL_SETSID)
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check_include_file_cxx(sys/types.h HAVE_SYS_TYPES_H)
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check_include_file_cxx(ifaddrs.h HAVE_IFADDRS_H)
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if(HAVE_SYS_TYPES_H AND HAVE_IFADDRS_H)
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include(TestAppendRequiredLibraries)
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test_append_socket_library(core_interface)
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endif()
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include(TestAppendRequiredLibraries)
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test_append_atomic_library(core_interface)
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check_cxx_symbol_exists(std::system "cstdlib" HAVE_STD_SYSTEM)
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check_cxx_symbol_exists(::_wsystem "stdlib.h" HAVE__WSYSTEM)
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if(HAVE_STD_SYSTEM OR HAVE__WSYSTEM)
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set(HAVE_SYSTEM 1)
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endif()
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check_cxx_source_compiles("
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#include <string.h>
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int main()
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{
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char buf[100];
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char* p{strerror_r(0, buf, sizeof buf)};
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(void)p;
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}
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" STRERROR_R_CHAR_P
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)
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# Check for malloc_info (for memory statistics information in getmemoryinfo).
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check_cxx_symbol_exists(malloc_info "malloc.h" HAVE_MALLOC_INFO)
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# Check for mallopt(M_ARENA_MAX) (to set glibc arenas).
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check_cxx_source_compiles("
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#include <malloc.h>
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int main()
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{
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mallopt(M_ARENA_MAX, 1);
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}
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" HAVE_MALLOPT_ARENA_MAX
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)
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# Check for posix_fallocate().
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check_cxx_source_compiles("
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// same as in src/util/fs_helpers.cpp
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#ifdef __linux__
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#ifdef _POSIX_C_SOURCE
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#undef _POSIX_C_SOURCE
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#endif
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#define _POSIX_C_SOURCE 200112L
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#endif // __linux__
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#include <fcntl.h>
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int main()
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{
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return posix_fallocate(0, 0, 0);
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}
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" HAVE_POSIX_FALLOCATE
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)
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# Check for strong getauxval() support in the system headers.
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check_cxx_source_compiles("
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#include <sys/auxv.h>
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int main()
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{
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getauxval(AT_HWCAP);
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}
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" HAVE_STRONG_GETAUXVAL
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)
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# Check for UNIX sockets.
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check_cxx_source_compiles("
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#include <sys/socket.h>
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#include <sys/un.h>
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int main()
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{
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struct sockaddr_un addr;
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addr.sun_family = AF_UNIX;
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}
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" HAVE_SOCKADDR_UN
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)
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# Check for different ways of gathering OS randomness:
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# - Linux getrandom()
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check_cxx_source_compiles("
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#include <sys/random.h>
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int main()
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{
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getrandom(nullptr, 32, 0);
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}
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" HAVE_GETRANDOM
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)
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# - BSD getentropy()
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check_cxx_source_compiles("
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#include <sys/random.h>
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int main()
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{
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getentropy(nullptr, 32);
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}
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" HAVE_GETENTROPY_RAND
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)
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# - BSD sysctl()
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check_cxx_source_compiles("
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#ifdef __linux__
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#error Don't use sysctl on Linux, it's deprecated even when it works
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#endif
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int main()
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{
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sysctl(nullptr, 2, nullptr, nullptr, nullptr, 0);
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}
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" HAVE_SYSCTL
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)
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# - BSD sysctl(KERN_ARND)
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check_cxx_source_compiles("
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#ifdef __linux__
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#error Don't use sysctl on Linux, it's deprecated even when it works
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#endif
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int main()
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{
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static int name[2] = {CTL_KERN, KERN_ARND};
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sysctl(name, 2, nullptr, nullptr, nullptr, 0);
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}
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" HAVE_SYSCTL_ARND
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)
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