I am fairly new to both MacOs and C++ and have a problem which is similar to the one described here but also no solution I find in the Internet works.
'fatal error: 'wchar.h' file not found' error with the new macos 11.3 update
If I try to compile the most simple c++ program on my machine via command line it does not work.
#include <iostream>
int main()
{
std::cout << "Hello, World!" << std::endl;
return 0;
}
Since it used to work I probably broke something but don't know what
The simple test command I use is the following
clang -v --target=arm64 helloworld.cpp
Which results in a iostream not found error
if I now include the xcode include directory via
clang -v --target=arm64 -I/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/ helloworld.cpp
The iostream error disappears and I get a wchar.h not found error
I removed xcode completely and reinstalled it but this seems to not help also does it not make a difference if I use clang or clang++.
With Clion and cmake it works but I do not know why
xcode-select version 2392
/usr/bin/clang
Apple clang version 13.0.0 (clang-1300.0.29.30)
Target: arm64-apple-darwin21.2.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
locate iostream.h
`/Library/Frameworks/Mono.framework/Versions/6.12.0/include/glib-2.0/gio/gfileiostream.h
/Library/Frameworks/Mono.framework/Versions/6.12.0/include/glib-2.0/gio/giostream.h
/opt/homebrew/Cellar/boost/1.76.0/include/boost/asio/basic_socket_iostream.hpp
/opt/homebrew/Cellar/boost/1.76.0/include/boost/iostreams/detail/iostream.hpp
/opt/homebrew/Cellar/boost/1.76.0/include/boost/math/cstdfloat/cstdfloat_iostream.hpp
/opt/homebrew/Cellar/boost/1.76.0/include/boost/nowide/iostream.hpp
/opt/homebrew/Cellar/boost/1.76.0/include/boost/typeof/std/iostream.hpp
/opt/homebrew/Cellar/glib/2.70.2/include/glib-2.0/gio/gfileiostream.h
/opt/homebrew/Cellar/glib/2.70.2/include/glib-2.0/gio/giostream.h
/opt/homebrew/Cellar/glib/2.70.2/include/glib-2.0/gio/gsimpleiostream.h