Fix filesystem includes

packages/PEGTL/include/tao/pegtl/internal/file_mapper_posix.hpp

@@ -10,7 +10,12 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+#if __has_include(<filesystem>)
 #include <filesystem>
+#else
+#include <experimental/filesystem>
+#endif
+
 #include <utility>
 
 #include "../config.hpp"

packages/PEGTL/include/tao/pegtl/internal/file_reader.hpp

@@ -5,7 +5,13 @@
 #define TAO_PEGTL_INTERNAL_FILE_READER_HPP
 
 #include <cstdio>
+
+#if __has_include(<filesystem>)
 #include <filesystem>
+#else
+#include <experimental/filesystem>
+#endif
+
 #include <memory>
 #include <string>
 #include <utility>

packages/PEGTL/include/tao/pegtl/internal/path_to_string.hpp

@@ -4,7 +4,13 @@
 #ifndef TAO_PEGTL_INTERNAL_PATH_TO_STRING_HPP
 #define TAO_PEGTL_INTERNAL_PATH_TO_STRING_HPP
 
+
+#if __has_include(<filesystem>)
 #include <filesystem>
+#else
+#include <experimental/filesystem>
+#endif
+
 #include <string>
 
 #include "../config.hpp"

packages/PEGTL/include/tao/pegtl/mmap_input.hpp

@@ -4,7 +4,12 @@
 #ifndef TAO_PEGTL_MMAP_INPUT_HPP
 #define TAO_PEGTL_MMAP_INPUT_HPP
 
+#if __has_include(<filesystem>)
 #include <filesystem>
+#else
+#include <experimental/filesystem>
+#endif
+
 #include <string>
 
 #include "config.hpp"

packages/PEGTL/include/tao/pegtl/read_input.hpp

@@ -4,7 +4,12 @@
 #ifndef TAO_PEGTL_READ_INPUT_HPP
 #define TAO_PEGTL_READ_INPUT_HPP
 
+#if __has_include(<filesystem>)
 #include <filesystem>
+#else
+#include <experimental/filesystem>
+#endif
+
 #include <string>
 
 #include "config.hpp"