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Filesystem: GCC 8 compat

This commit is contained in:
Iliyas Jorio 2021-04-22 22:03:16 +02:00
parent 867c6af8f9
commit 717092660c
1 changed files with 16 additions and 4 deletions
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20
src/CompilerSupport/filesystem.h
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@ -1,11 +1,23 @@
#pragma once
#if !__APPLE__ && !__FreeBSD__ /* don't use built-in filesystem implementation so we can support older macOS and FreeBSD */ && \
defined(__cplusplus) && __cplusplus >= 201703L && defined(__has_include) && __has_include(<filesystem>)
// Do NOT use the built-in C++20 filesystem implementation on the following configs:
// - macOS: it starts shipping <filesystem> at version 10.15; we want our builds to work on older macOS versions
// - FreeBSD: its implementation appears problematic (on version 13.0-BETA1 with clang 11)
// - GCC 8: its implementation requires linking an extra library; don't bother with that
#if !__APPLE__ \
&& !__FreeBSD__ \
&& !(defined(__GNUC__) && __GNUC__ < 9) \
&& defined(__cplusplus) && __cplusplus >= 201703L \
&& defined(__has_include) && __has_include(<filesystem>)
#include <filesystem>
namespace fs = std::filesystem;
#else
#define LEGACY_FILESYSTEM_IMPLEMENTATION 1
#include "CompilerSupport/filesystem_implementation.hpp"
namespace fs = ghc::filesystem;
#include "CompilerSupport/filesystem_implementation.hpp"
namespace fs = ghc::filesystem;
#endif