link

• gcc 최신 버젼 다운 받기_& gcc 최신 정보

  • (외부링크) gcc 최신 버젼 다운 받기_잘 설명됨
    • 최신판 수동 설치
      • cmake최신판

• 최신 LLVM설치(clang)

  • clang-format-20설치방법

• -std=c++2b같은거_컴파일옵션 정리 버젼별c++20+23+26 & C/C++ Support in Clang

  • -o -Wextra -Wall 같은거 정리

• 나름 잘 정리된 C++

• C++26

  • C++26관련 문서(p2996r5)
    • p2300등 여러가 지 문서 다 모아놓았음c++
    • p2300r10

• 외국사람이 잘 정리함(C11부터 C26까지 예시 잘 정리됨)

  • https://github.com/scivision/Cpp23-examples

• C++ 23

  • New C++ features in GCC 13
  • https://en.cppreference.com/w/c/23.html

• Cpp practices

  • Cpp best practices

• C++26이후 최신 뉴스 모음

  • (250428)GCC 15의 새로운 C++ 기능들
  • (241109외부링크) c26, c29 청사진 및 앞으로 나아갈 방향 (Peering Forward - C++’s Next Decade - Herb Sutter - CppCon 2024 | CppCon

• C++버젼별 역사 및 정리 잘됨

  • https://dulidungsil.tistory.com/entry/GCC-%EB%B2%84%EC%A0%84%EA%B3%BC-C-%EB%B2%84%EC%A0%84-%EB%A7%A4%EC%B9%AD
  • C++ 필수 라이브러리 설명 잘됨.
    • https://doitnow-man.tistory.com/entry/C-gcc-%EB%B2%84%EC%A0%84%EA%B3%BC-libstdc-%EA%B4%80%EA%B3%84

---

CPLUS_INCLUDE_PATH이걸 해줘야 C++26이 된다.|🔝|

• Quansight/pearu-sandbox#9

export CPLUS_INCLUDE_PATH=$PREFIX/$HOST/include/c++/$GCCVERSION:$PREFIX/lib/gcc/$HOST/$GCCVERSION/include

• fishshell

set -x CPLUS_INCLUDE_PATH "$PREFIX/$HOST/include/c++/$GCCVERSION:$PREFIX/lib/gcc/$HOST/$GCCVERSION/include"

gcc15최신판 다 설치하고 gcc-15 default로 만들기|🔝|

• https://medium.com/@xersendo/moving-to-c-26-how-to-build-and-set-up-gcc-15-1-on-ubuntu-f52cc9173fa0

sudo update-alternatives --install /usr/bin/gcc gcc /opt/gcc-15/bin/gcc 100
sudo update-alternatives --install /usr/bin/g++ g++ /opt/gcc-15/bin/g++ 100

cmake 최신판 설치|🔝|

• https://cmake.org/download/
• 압축 풀고 cmake폴더 들어가서

./bootstrap && make && sudo make install

• https://tttsss77.tistory.com/77

Cmake업데이트 하기[🔝]

• https://somjang.tistory.com/entry/Ubuntu-CMake-%EC%97%85%EB%8D%B0%EC%9D%B4%ED%8A%B8-%ED%95%98%EB%8A%94-%EB%B0%A9%EB%B2%95

• https://askubuntu.com/questions/829310/how-to-upgrade-cmake-in-ubuntu

Cmake option옵션 설정[🔝]

• https://tttsss77.tistory.com/193?category=827570

C++ 26최신뉴스 모음|🔝|

• 240212)2023년 C++ 에코시스템: C++20의 성장, Clang 기반 도구의 채택 확대, 개발자의 신뢰를 얻고 있는 AI | Jessie Cho |

GCC 15의 새로운 C++ 기능들 |🔝|

• 250428
• GCC 15는 C++26 기능을 대거 추가했으며, 일부 C++23 기능도 개선했음
• 주요 추가 기능은 Pack Indexing, Variadic Friends, 삭제 이유 명시, 구조적 바인딩 조건문 등
• 새로운 컴파일러 옵션과 경고들도 도입되어 개발자 경험이 향상됨
• C++ 모듈 지원이 강화되었고, 템플릿 컴파일 속…

---

gcc최신정보 및 다운로드 받기|🔝|

• https://github.com/gcc-mirror/gcc

• https://gcc.gnu.org/

• gcc-15.1.0(Fri Apr 25 10: 36 :04 GMT 2025)

  • https://gcc.gnu.org/pipermail/gcc-announce/2025/000185.html

• gcc15최신버젼 설치방법(250731)

  • https://medium.com/@xersendo/moving-to-c-26-how-to-build-and-set-up-gcc-15-1-on-ubuntu-f52cc9173fa0
  • https://www.reddit.com/r/cpp/comments/1k7lmmn/gcc_15_released/
  • apt update로 편하게 설치
    • https://phoenixnap.com/kb/install-gcc-ubuntu

• gcc14버젼 설치방법

  • https://dev.to/marcosplusplus/how-to-install-gcc-14-and-use-c23-41od

최신 LLVM설치(clang)|🔝|

• https://growingdev.blog/entry/llvm-clang-install

wget https://apt.llvm.org/llvm.sh
chmod +x llvm.sh
sudo ./llvm.sh <version number>

clang-format-20설치방법|🔝|

• https://askubuntu.com/questions/1409031/how-to-use-a-more-recent-clang-format-or-clang-tidy-version-on-ubuntu-18-04

wget https://apt.llvm.org/llvm.sh
chmod +x llvm.sh
sudo ./llvm.sh 20
sudo apt install clang-format-20

• 다른 방법
  • llvm/llvm-project#57104

$ cmake -S llvm -B build -G Ninja \
	-DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra" \
 	-DLLVM_ENABLE_RUNTIMES="compiler-rt;libcxx;libcxxabi" \
	-DLLVM_USE_LINKER=mold \
	-DCMAKE_BUILD_TYPE=Release \
	-DCMAKE_C_COMPILER=clang \
	-DCMAKE_CXX_COMPILER=clang++
$ cd build
$ cmake --build . --target install

C++26: The Next C++ Standard | by Rainer Grimm이 사람이 최고|🔝|

• August 19, 2024/0 Comments/in C++26/by Rainer Grimm
  • https://www.modernescpp.com/index.php/c26-the-next-c-standard/

---

Code Generation in Rust vs C++26 | Posted Sep 30, 2024 Updated Oct 4, 2024 | By Barry Revzin|🔝|

• https://brevzin.github.io/c++/2024/09/30/annotations/

---

C++23 tutorial|🔝|

C++ Weekly - Ep 323 - C++23's auto{} and auto()

gcc command

g++ -std=c++2b -Wpedantic -Wall -Wextra -Wconversion -O3 -Werror -o main main.cpp

./main

C++23|🔝|

https://en.m.wikipedia.org/wiki/C%2B%2B23

C++23 Standard Library Preview - Jeff Garland - CppCon 2021|🔝|

https://youtu.be/ySsqD2e5uRQ

• CppCon 2021 -

  https://cppcon.org/

  https://github.com/CppCon/CppCon2020

---

Despite the pandemic the C++ committee is continuing to work towards C++23. This survey presentation provides students with a broad overview of the changes and new facilities in the C++23 standard library.

Compiler Explorer__web coding|🔝|

compiler explorer

CppCon|🔝|

https://github.com/CppCon/CppCon2023

https://github.com/CppCon/CppCon2022

https://github.com/CppCon/CppCon2021

https://github.com/CppCon/CppCon2020

https://github.com/CppCon

C++23|🔝|

https://www.modernescpp.com/index.php/ranges-improvements-with-c-23

https://en.cppreference.com/w/cpp/23

C++ 23 Forum|🔝|

https://cplusplus.com/forum/lounge/283965/

C++ Core Guidelines|🔝|

https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines

---

C/C++ Support in Clang|🔝|

• Clang implements the following published and upcoming ISO C++ standards:
  • https://clang.llvm.org/cxx_status.html
    • https://gcc.gnu.org/onlinedocs/gcc/C-Dialect-Options.html
      • https://stackoverflow.com/questions/78069644/how-do-i-use-c-26-with-gcc-13-2-0

Language Standard	Flag	Available in Clang?
C++2c C++26	-std=c++2c	Partial
C++23	-std=c++23 -std=c++2b	Partial
C++20	-std=c++20 -std=c++2a	Partial
C++17	-std=c++17	Clang 5
C++14	-std=c++14	Clang 3.4
C++11	-std=c++11	Clang 3.3
C++98/C++03	-std=c++98	Yes (other than export)
GNU 89	none, -std=gnu89
ANSI, ISO C90	-ansi, -std=c89
ISO C99	-std=c99
ISO C11	-std=c11

• (CS)컴퓨터 시스템 [ 3판 ] 김형신 저 | 퍼스트북 | 2016년 09월 06일(p35)

GCC / Clang|🔝|

-Wall -Wextra -Wshadow -Wnon-virtual-dtor -pedantic

• use these and consider the following (see descriptions below)

see descriptions below

• -lm - 필요하다면 표준 수학 함수를 추가한다.

• -pedantic - Warn on language extensions

• -Wall -Wextra reasonable and standard

• -Wshadow warn the user if a variable declaration shadows one from a parent context

• -Wnon-virtual-dtor warn the user if a class with virtual functions has a non-virtual destructor. This helps catch hard to track down memory errors

• -Wold-style-cast warn for c-style casts

• -Wcast-align warn for potential performance problem casts -Wunused warn on anything being unused

• -Woverloaded-virtual warn if you overload (not override) a virtual function

• -Wpedantic (all versions of GCC, Clang >= 3.2) warn if non-standard C++ is used

• -Wconversion warn on type conversions that may lose data

• -Wsign-conversion (Clang all versions, GCC >= 4.3) warn on sign conversions

• -Wmisleading-indentation (only in GCC >= 6.0) warn if indentation implies blocks where blocks do not exist

• -Wduplicated-cond (only in GCC >= 6.0) warn if if / else chain has duplicated conditions

• -Wduplicated-branches (only in GCC >= 7.0) warn if if / else branches have duplicated code

• -Wlogical-op (only in GCC) warn about logical operations being used where bitwise were probably wanted

• -Wnull-dereference (only in GCC >= 6.0) warn if a null dereference is detected

• -Wuseless-cast (only in GCC >= 4.8) warn if you perform a cast to the same type

• -Wdouble-promotion (GCC >= 4.6, Clang >= 3.8) warn if float is implicitly promoted to double

• -Wformat=2 warn on security issues around functions that format output (i.e., printf)

• -Wlifetime (only special branch of Clang currently) shows object lifetime issues

• -Wimplicit-fallthrough Warns when case statements fall-through. (Included with -Wextra in GCC, not in clang)

Consider using -Weverything and disabling the few warnings you need to on Clang

• -Weffc++ warning mode can be too noisy, but if it works for your project, use it also.

https://github.com/cpp-best-practices/cppbestpractices/blob/master/02-Use_the_Tools_Available.md

---

gcc15설치하다가 나온 메세지 분석하기

libtool: finish: PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin:/sbin" ldconfig -n /opt/gcc-15/lib/../lib64
----------------------------------------------------------------------
Libraries have been installed in:
   /opt/gcc-15/lib/../lib64

If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
   - add LIBDIR to the `LD_LIBRARY_PATH' environment variable
     during execution
   - add LIBDIR to the `LD_RUN_PATH' environment variable
     during linking
   - use the `-Wl,-rpath -Wl,LIBDIR' linker flag
   - have your system administrator add LIBDIR to `/etc/ld.so.conf'

해결

• Quansight/pearu-sandbox#9

export CFLAGS="$CFLAGS -D__GLIBC_USE\(...\)=0"