#045 C++

My place for notes on C++ resources and references.

Notes

Just a place for notes on C++ resources and references…

Running on MacOS

Apple’s XCode ships with their LLVM release and Clang.

$ g++ --version
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 10.0.0 (clang-1000.11.45.5)
Target: x86_64-apple-darwin17.7.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

Clang actually ships with two version of the standard library:

• Libc++, the LLVM/Clang’s standard C++ library (default)
• Libstdc++, the GNU standard C++ library that comes standard in Linux (officially deprecated)

Compilation can select the library (and C++ version) with command line switches:

g++ -std=c++17 -stdlib=libstdc++ ...
g++ -std=c++17 -stdlib=libc++ ...

Resources

• Good list of C and C++ Standards References. Selected resources:
  • The final draft standard C17 FDIS is available for free [PDF]
  • A C11 working draft n1570 (2011-04-12) is available for free and differs only minimally from the final C11 Standard [PDF]
  • The final draft of C++17 is n4659 (2017-03-21) [PDF]
  • A free C++11 Working Draft (n3337) is available [PDF]
• cppreference.com - seems to most closely follow the specs
• cplusplus.com - popular reference but seems not to have all the details from the specs
• coliru - run C/C++ in a browser; bit like fiddler for Cxx
• Toolchain versions in XCode - wikipedia