sibafb / learn_cpp Goto Github PK

View Code? Open in Web Editor NEW

0.0 0.0 0.0 153 KB

my C++ study

CMake 7.64% C++ 92.36%

learn_cpp's People

Contributors

Watchers

learn_cpp's Issues

[future]CMakeの書き方をどこかにまとめておきたい

以下のようなCMakeの記載方法をメモする場所が必要。
https://cpprefjp.github.io/implementation.html

[problem83] undefined reference to `pngwriter::pngwriter(int, int, int, char const*)'

[build][Modern C++ Challenge problem43]undefined reference to `curl_global_init'

Modern C++ Challenge problem 43の問題を解いていたところ、下記のリンクエラーとなった。

/usr/bin/ld: CMakeFiles/problem43.dir/The-Modern-Cpp-Challenge/libs/date/src/tz.cpp.o: in function `date::curl_global()':
tz.cpp:(.text+0x9fb3): undefined reference to `curl_global_init'
/usr/bin/ld: CMakeFiles/problem43.dir/The-Modern-Cpp-Challenge/libs/date/src/tz.cpp.o: in function `date::(anonymous namespace)::curl_deleter::operator()(void*) const':
tz.cpp:(.text+0xa03a): undefined reference to `curl_easy_cleanup'
/usr/bin/ld: CMakeFiles/problem43.dir/The-Modern-Cpp-Challenge/libs/date/src/tz.cpp.o: in function `date::curl_init()':
tz.cpp:(.text+0xa09d): undefined reference to `curl_easy_init'
/usr/bin/ld: CMakeFiles/problem43.dir/The-Modern-Cpp-Challenge/libs/date/src/tz.cpp.o: in function `date::download_to_string(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)':
tz.cpp:(.text+0xa205): undefined reference to `curl_easy_setopt'
/usr/bin/ld: tz.cpp:(.text+0xa238): undefined reference to `curl_easy_setopt'
/usr/bin/ld: tz.cpp:(.text+0xa260): undefined reference to `curl_easy_setopt'
/usr/bin/ld: tz.cpp:(.text+0xa283): undefined reference to `curl_easy_setopt'
/usr/bin/ld: tz.cpp:(.text+0xa297): undefined reference to `curl_easy_perform'
/usr/bin/ld: CMakeFiles/problem43.dir/The-Modern-Cpp-Challenge/libs/date/src/tz.cpp.o: in function `date::download_to_file(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, date::(anonymous namespace)::download_file_options)':
tz.cpp:(.text+0xa426): undefined reference to `curl_easy_setopt'
/usr/bin/ld: tz.cpp:(.text+0xa44c): undefined reference to `curl_easy_setopt'
/usr/bin/ld: tz.cpp:(.text+0xa488): undefined reference to `curl_easy_setopt'
/usr/bin/ld: tz.cpp:(.text+0xa50a): undefined reference to `curl_easy_setopt'
/usr/bin/ld: tz.cpp:(.text+0xa521): undefined reference to `curl_easy_perform'
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/problem43.dir/build.make:113: problem43] Error 1
make[1]: *** [CMakeFiles/Makefile2:1507: CMakeFiles/problem43.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....

[moderncpp problem78] add_custom_command が２つある理由を明らかにする。

上記のように実行ファイルの場所にコピーしているように見受けられる。

$<TARGET_FILE_DIR:problem_78>

と

${CMAKE_CURRENT_BINARY_DIR}

の違いを調べてみる。

TARGET_FILE_DIRの方は、
https://yuki-koyama.hatenablog.com/entry/2018/09/09/135057
で解説のある通り、TARGETの（ここでいうproblem78）が置かれるの場所のようだ。

CMAKE_CURRENT_BINARY_DIR は
https://theolizer.com/cpp-school3/cpp-school3-12/
の解説や
https://cmake.org/cmake/help/latest/variable/CMAKE_CURRENT_BINARY_DIR.html
のドキュメントが示すとおり、build用のディレクトリのようだ。

同じディレクトリを示すように感じられるが、この違いを考える。

[moderncpp problem79] undefined reference to `pthread_create'

pthread_createの参照エラー

boostの情報をまとめておきたい

こういうの
https://boostjp.github.io/archive/boost_docs/libs/date_time/local_time_adjust.html

[problem83] ‘generate’ is not a member of ‘std’

今まで何度か対処した問題だが、generateがstd出ないと言われる問題。

codeqlのworkflowを修正する

[problem82]undefined reference to `crc32'

/usr/bin/ld: PDF-Writer/LibPng/libLibPng.a(png.c.o): in function `png_reset_crc':
png.c:(.text+0x1ea): undefined reference to `crc32'
/usr/bin/ld: PDF-Writer/LibPng/libLibPng.a(png.c.o): in function `png_calculate_crc':
png.c:(.text+0x2ab): undefined reference to `crc32'
/usr/bin/ld: PDF-Writer/LibPng/libLibPng.a(png.c.o): in function `png_reset_zstream':
png.c:(.text+0x17d9): undefined reference to `inflateReset'
/usr/bin/ld: PDF-Writer/LibPng/libLibPng.a(png.c.o): in function `png_compare_ICC_profile_with_sRGB':
png.c:(.text+0x3e6a): undefined reference to `adler32'
/usr/bin/ld: png.c:(.text+0x3e84): undefined reference to `adler32'
/usr/bin/ld: png.c:(.text+0x3ec3): undefined reference to `crc32'
/usr/bin/ld: png.c:(.text+0x3edd): undefined reference to `crc32'
/usr/bin/ld: PDF-Writer/LibPng/libLibPng.a(pngread.c.o): in function `png_read_destroy':
pngread.c:(.text+0x180a): undefined reference to `inflateEnd'
/usr/bin/ld: PDF-Writer/LibPng/libLibPng.a(pngrutil.c.o): in function `png_inflate_claim':
pngrutil.c:(.text+0x911): undefined reference to `inflateReset2'
/usr/bin/ld: pngrutil.c:(.text+0x937): undefined reference to `inflateInit2_'
/usr/bin/ld: pngrutil.c:(.text+0x985): undefined reference to `inflateValidate'
/usr/bin/ld: PDF-Writer/LibPng/libLibPng.a(pngrutil.c.o): in function `png_zlib_inflate':
pngrutil.c:(.text+0xa48): undefined reference to `inflate'
/usr/bin/ld: PDF-Writer/LibPng/libLibPng.a(pngrutil.c.o): in function `png_decompress_chunk':
pngrutil.c:(.text+0xe7b): undefined reference to `inflateReset'
/usr/bin/ld: PDF-Writer/LibPng/libLibPng.a(pngwrite.c.o): in function `png_write_destroy':
pngwrite.c:(.text+0x1948): undefined reference to `deflateEnd'
/usr/bin/ld: PDF-Writer/LibPng/libLibPng.a(pngwutil.c.o): in function `png_deflate_claim':
pngwutil.c:(.text+0x9c1): undefined reference to `deflateEnd'
/usr/bin/ld: pngwutil.c:(.text+0xa51): undefined reference to `deflateReset'
/usr/bin/ld: pngwutil.c:(.text+0xa83): undefined reference to `deflateInit2_'
/usr/bin/ld: PDF-Writer/LibPng/libLibPng.a(pngwutil.c.o): in function `png_text_compress':
pngwutil.c:(.text+0xd44): undefined reference to `deflate'
/usr/bin/ld: PDF-Writer/LibPng/libLibPng.a(pngwutil.c.o): in function `png_compress_IDAT':
pngwutil.c:(.text+0x1673): undefined reference to `deflate'
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/problem82.dir/build.make:103: problem82] Error 1
make[1]: *** [CMakeFiles/Makefile2:244: CMakeFiles/problem82.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
[100%] Built target PDFWriter
make: *** [Makefile:136: all] Error 2