LoginSignup
1
1
この記事誰得？ 私しか得しないニッチな技術で記事投稿！
@kaizen_nagoya(Dr. Kiyoshi Ogawa)

C++17 - The Complete Guide clang++とg++でコンパイルしてみた(3) filesystem

Last updated at Posted at 2018-06-16

C++17 - The Complete Guide by Nicolai M. Josuttis
http://www.josuttis.com/cppstd17/

C++17 - The Complete Guide clang++とg++でコンパイルしてみた(まとめ)
https://qiita.com/kaizen_nagoya/items/c000f307e642990781e1

目的(purpose)

C++17 - the complete guideコンパイル記録は、コンパイラおよび対応標準、コンパイラの版により、コンパイルエラーMessageの違いを記録し、どのエラーが出たら、どの版またはどの対応標準にすればエラーが少なくなるかを考察するための資料の第一歩です。

成果(outcome)

(1)コンパイラの種類、対応標準の違いによってエラーの数が違う。
(2)同じエラーであってもMessageの表現が違う。
(3) Error Messageのネットで検索する際に役立つ。

編纂器(compiler)

clang++

clang version 6.0.0 (tags/RELEASE_600/final)
Target: x86_64-apple-darwin17.5.0
Thread model: posix
InstalledDir: /usr/local/opt/llvm/bin

g++

g++ (Homebrew GCC 8.1.0) 8.1.0
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

#編纂実行(Compile and go) lang

##一覧(list)

clang++ g++
filesystem error warning link error execute error 出力・備考 error warning link error execute error 出力・備考 c/g
checkpath.cpp 3 1 コンパイルエラーとリンクエラー
createfiles.cpp 3 1 コンパイルエラーとリンクエラー
switchinit.cpp 6 1 std::experimentalを注釈にすると上記リンクエラー コンパイルエラーとリンクエラー

###checkpath

checkpath
clang++ filesystem/checkpath.cpp -std=c++2a -Wall
filesystem/checkpath.cpp:3:10: error: 'filesystem' file not found with <angled> include; use "quotes" instead
#include <filesystem>
         ^~~~~~~~~~~~
         "filesystem"
In file included from filesystem/checkpath.cpp:3:
filesystem/filesystem:1:1: error: unknown type name 'filesystem'
filesystem/checkpath.cpp
^
filesystem/filesystem:1:11: error: expected unqualified-id
filesystem/checkpath.cpp
          ^
3 errors generated.
g++ filesystem/checkpath.cpp -std=c++2a -Wall
Undefined symbols for architecture x86_64:
  "std::filesystem::__cxx11::directory_iterator::operator*() const", referenced from:
      _main in ccgtVCG6.o
  "std::filesystem::status(std::filesystem::__cxx11::path const&)", referenced from:
      std::filesystem::exists(std::filesystem::__cxx11::path const&) in ccgtVCG6.o
      std::filesystem::is_directory(std::filesystem::__cxx11::path const&) in ccgtVCG6.o
      std::filesystem::is_regular_file(std::filesystem::__cxx11::path const&) in ccgtVCG6.o
  "std::filesystem::__cxx11::directory_iterator::directory_iterator(std::filesystem::__cxx11::path const&, std::filesystem::directory_options, std::error_code*)", referenced from:
      std::filesystem::__cxx11::directory_iterator::directory_iterator(std::filesystem::__cxx11::path const&) in ccgtVCG6.o
  "std::filesystem::__cxx11::directory_iterator::operator++()", referenced from:
      _main in ccgtVCG6.o
  "std::filesystem::__cxx11::path::_M_split_cmpts()", referenced from:
      std::filesystem::__cxx11::path::path<char*, std::filesystem::__cxx11::path>(char* const&, std::filesystem::__cxx11::path::format) in ccgtVCG6.o
  "std::filesystem::file_size(std::filesystem::__cxx11::path const&)", referenced from:
      _main in ccgtVCG6.o
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status

###createfiles

createfiles
clang++ filesystem/createfiles.cpp -std=c++2a -Wall
filesystem/createfiles.cpp:4:10: error: 'filesystem' file not found with <angled> include; use "quotes" instead
#include <filesystem>
         ^~~~~~~~~~~~
         "filesystem"
In file included from filesystem/createfiles.cpp:4:
filesystem/filesystem:1:1: error: unknown type name 'filesystem'
filesystem/checkpath.cpp
^
filesystem/filesystem:1:11: error: expected unqualified-id
filesystem/checkpath.cpp
          ^
3 errors generated.
g++ filesystem/createfiles.cpp -std=c++2a -Wall
Undefined symbols for architecture x86_64:
  "std::filesystem::__cxx11::recursive_directory_iterator::operator*() const", referenced from:
      _main in ccwnfBsO.o
  "std::filesystem::__cxx11::path::has_filename() const", referenced from:
      std::filesystem::__cxx11::path::operator/=(std::filesystem::__cxx11::path const&) in ccwnfBsO.o
  "std::filesystem::__cxx11::path::has_root_directory() const", referenced from:
      std::filesystem::__cxx11::path::is_absolute() const in ccwnfBsO.o
  "std::filesystem::create_symlink(std::filesystem::__cxx11::path const&, std::filesystem::__cxx11::path const&)", referenced from:
      _main in ccwnfBsO.o
  "std::filesystem::create_directory(std::filesystem::__cxx11::path const&)", referenced from:
      _main in ccwnfBsO.o
  "std::filesystem::__cxx11::recursive_directory_iterator::recursive_directory_iterator(std::filesystem::__cxx11::path const&, std::filesystem::directory_options, std::error_code*)", referenced from:
      std::filesystem::__cxx11::recursive_directory_iterator::recursive_directory_iterator(std::filesystem::__cxx11::path const&, std::filesystem::directory_options) in ccwnfBsO.o
  "std::filesystem::__cxx11::recursive_directory_iterator::~recursive_directory_iterator()", referenced from:
      _main in ccwnfBsO.o
  "std::filesystem::__cxx11::recursive_directory_iterator::operator++()", referenced from:
      _main in ccwnfBsO.o
  "std::filesystem::__cxx11::path::_M_split_cmpts()", referenced from:
      std::filesystem::__cxx11::path::operator/=(std::filesystem::__cxx11::path const&) in ccwnfBsO.o
      std::filesystem::__cxx11::path::_M_append(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&) in ccwnfBsO.o
      std::filesystem::__cxx11::path::path<char [5], std::filesystem::__cxx11::path>(char const (&) [5], std::filesystem::__cxx11::path::format) in ccwnfBsO.o
      std::filesystem::__cxx11::path::path<char [12], std::filesystem::__cxx11::path>(char const (&) [12], std::filesystem::__cxx11::path::format) in ccwnfBsO.o
      std::filesystem::__cxx11::path::path<char [2], std::filesystem::__cxx11::path>(char const (&) [2], std::filesystem::__cxx11::path::format) in ccwnfBsO.o
  "typeinfo for std::filesystem::__cxx11::filesystem_error", referenced from:
      anon in ccwnfBsO.o
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status

###switchinit

switchinit
clang++ filesystem/switchinit.cpp -std=c++2a -Wall
filesystem/switchinit.cpp:4:10: error: 'filesystem' file not found with <angled> include; use "quotes" instead
#include <filesystem>
         ^~~~~~~~~~~~
         "filesystem"
In file included from filesystem/switchinit.cpp:4:
filesystem/filesystem:1:1: error: unknown type name 'filesystem'
filesystem/checkpath.cpp
^
filesystem/filesystem:1:11: error: expected unqualified-id
filesystem/checkpath.cpp
          ^
filesystem/switchinit.cpp:6:26: error: expected namespace name
    using namespace std::experimental;
                    ~~~~~^
filesystem/switchinit.cpp:11:24: error: expected namespace name
  using namespace std::filesystem;
                  ~~~~~^
filesystem/switchinit.cpp:13:11: error: unknown type name 'path'
  switch (path p(name); status(p).type()) {
          ^
6 errors generated.
g++ filesystem/switchinit.cpp -std=c++2a -Wall
filesystem/switchinit.cpp:6:26: error: 'experimental' is not a namespace-name
     using namespace std::experimental;
                          ^~~~~~~~~~~~
filesystem/switchinit.cpp:6:38: error: expected namespace-name before ';' token
     using namespace std::experimental;
                                      ^

##検討事項(agenda)
1)コンパイルエラーをなくす修正方法

2)役に立つまたは意味のあるその他の出力

#台本(script)
毎回コンパイル条件を変えてコンパイルするのに、一気にコンパイルする方法

cga.sh
#!/bin/bash
while read line
do
  echo "clang++ $line -std=c++2a -Wall"
  clang++ $line -std=c++2a -Wall 
  if [  -e a.out ]; then
  ./a.out
  rm a.out
  fi
  echo "g++ $line -std=c++2a -Wall"
  g++ $line -std=c++2a -Wall 
  if [  -e a.out ]; then
  ./a.out
  rm a.out
  fi
done < ./$1
do.sh
#!/bin/bash
while read line
do
 ls ./$line/*.cpp > ./$line/$line
 ./cga.sh ./$line/$line > $line.log.txt &> $line.log.txt
done < ./$1

#参考資料(reference)

###プログラミング言語教育のXYZ
https://qiita.com/kaizen_nagoya/items/1950c5810fb5c0b07be4
プログラミング言語教育のXYZ(youtube)
https://www.youtube.com/watch?v=He1_tg4px-w&t=486s

###Autosar Guidelines C++14

Autosar Guidelines C++14 example code compile list(1-169)
https://qiita.com/kaizen_nagoya/items/8ccbf6675c3494d57a76

###C++N4741 2018
Working Draft, Standard for Programming Language C++
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/n4741.pdf

C++N4741, 2018 Standard Working Draft on ISO/IEC 14882 sample code compile list
https://qiita.com/kaizen_nagoya/items/3294c014044550896010

###C++N4606 2016
Working Draft, Standard for Programming Language C++
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/n4606.pdf

C++N4606, 2016符号断片編纂一覧(example code compile list)
Working Draft 2016, ISO/IEC 14882(1)
https://qiita.com/kaizen_nagoya/items/df5d62c35bd6ed1c3d43/

###　CEDD(Compile Error Driven Design)
初めての　CEDD(Compile Error Driven Design) ８回直してコンパイル。
https://qiita.com/kaizen_nagoya/items/9494236aa1753f3fd1e1

コンパイルエラーを記録するとよい理由7つ
https://qiita.com/kaizen_nagoya/items/85c0e92b206883140e89
docker gnu(gcc/g++) and llvm(clang/clang++)
https://qiita.com/drafts/059874ea39c4de64c0f7

[C][C++]の国際規格案の例題をコンパイルするときの課題７つ。
https://qiita.com/kaizen_nagoya/items/5f4b155030259497c4de

C++N4606 Working Draft 2016, ISO/IEC 14882, C++ standardのコード断片をコンパイルするためにしていること
https://qiita.com/kaizen_nagoya/items/a8d7ee2f2e29e76c19c1

コンパイル用shell script C版(clangとgcc)とC++版(clang++とg++)
https://qiita.com/kaizen_nagoya/items/74220c0577a512c2d7da

Clang/Clang++(LLVM) gcc/g++(GNU) コンパイラ警告等比較
https://qiita.com/kaizen_nagoya/items/9a82b958cc3aeef0403f

C++2003とC++2017でコンパイルエラーになるならない事例集
https://qiita.com/kaizen_nagoya/items/a13ea3823441c430edff

Qiitaに投稿するCのStyle例(暫定)
https://qiita.com/kaizen_nagoya/items/946df1528a6a1ef2bc0d

cpprefjpのdecltypeをコンパイル試験
https://qiita.com/kaizen_nagoya/items/090909af702f0d5d8a67

MISRA C++ 5-0-16
https://qiita.com/kaizen_nagoya/items/7df2d4e05db724752a74

C++ Templates Part1 BASICS Chapter 3. Class Templates 3.2 Use of Class Template Stack stack1test.cpp
https://qiita.com/kaizen_nagoya/items/cd5fc49106fad5a4e9ed

ISO/IEC TS 17961:2013 C Secure Coding Rules(1) All list(to be confirmed)
https://qiita.com/kaizen_nagoya/items/54e056195c4f11b850a1

C言語（C++)に対する誤解、曲解、無理解、爽快。
https://qiita.com/kaizen_nagoya/items/3f3992c9722c1cee2e3a

C Puzzle Bookの有り難み5つ、C言語規格及びCコンパイラの特性を認識
https://qiita.com/kaizen_nagoya/items/d89a48c1536a02ecdec9

'wchar.h' file not found で困った clang++ macOS
https://qiita.com/kaizen_nagoya/items/de15cd46d657517fac11

Open POSIX Test Suiteの使い方を調べはじめました
https://qiita.com/kaizen_nagoya/items/644d5e407f5faf96e6dc

MISRA-C 2012 Referenceに掲載している文献の入手可能性を確認
https://qiita.com/kaizen_nagoya/items/96dc8b125e462d5575bb

どうやって MISRA Example Suiteをコンパイルするか
https://qiita.com/kaizen_nagoya/items/fbdbff5ff696e2ca7f00

MISRA C まとめ #include
https://qiita.com/kaizen_nagoya/items/f1a79a7cbd281607c7c9

「C++完全理解ガイド」の同意できること上位10
https://qiita.com/kaizen_nagoya/items/aa5744e0c4a8618c7671

文献履歴(document history)

ver. 0.10 初稿 20180616
ver. 0.11 一覧追記 20180617

最後までおよみいただきありがとうございました。

いいね　💚、フォローをお願いします。

Thank you very much for reading to the last sentence.

Please press the like icon 💚　and follow me for your happy life.

1
1
0

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
Sign upLogin
1
1