mirror of https://github.com/bitcoin/bitcoin
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
48 lines
1.3 KiB
48 lines
1.3 KiB
3 years ago
|
dnl Copyright (c) 2022 The Bitcoin Core developers
|
||
|
|
dnl Distributed under the MIT software license, see the accompanying
|
||
|
|
dnl file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
||
|
|
|
||
|
|
# GCC 8.1 and earlier requires -lstdc++fs
|
||
|
|
# Clang 8.0.0 (libc++) and earlier requires -lc++fs
|
||
|
|
|
||
|
|
m4_define([_CHECK_FILESYSTEM_testbody], [[
|
||
|
|
#include <filesystem>
|
||
|
|
|
||
|
|
namespace fs = std::filesystem;
|
||
|
|
|
||
|
|
int main() {
|
||
|
|
(void)fs::current_path().root_name();
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
]])
|
||
|
|
|
||
|
|
AC_DEFUN([CHECK_FILESYSTEM], [
|
||
|
|
|
||
|
|
AC_LANG_PUSH(C++)
|
||
|
|
|
||
|
|
AC_MSG_CHECKING([whether std::filesystem can be used without link library])
|
||
|
|
|
||
|
|
AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_FILESYSTEM_testbody])],[
|
||
|
|
AC_MSG_RESULT([yes])
|
||
|
|
],[
|
||
|
|
AC_MSG_RESULT([no])
|
||
|
|
SAVED_LIBS="$LIBS"
|
||
|
|
LIBS="$SAVED_LIBS -lstdc++fs"
|
||
|
|
AC_MSG_CHECKING([whether std::filesystem needs -lstdc++fs])
|
||
|
|
AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_FILESYSTEM_testbody])],[
|
||
|
|
AC_MSG_RESULT([yes])
|
||
|
|
],[
|
||
|
|
AC_MSG_RESULT([no])
|
||
|
|
AC_MSG_CHECKING([whether std::filesystem needs -lc++fs])
|
||
|
|
LIBS="$SAVED_LIBS -lc++fs"
|
||
|
|
AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_FILESYSTEM_testbody])],[
|
||
|
|
AC_MSG_RESULT([yes])
|
||
|
|
],[
|
||
|
|
AC_MSG_FAILURE([cannot figure out how to use std::filesystem])
|
||
|
|
])
|
||
|
|
])
|
||
|
|
])
|
||
|
|
|
||
|
|
AC_LANG_POP
|
||
|
|
])
|