(!! if someone can help me sort this out I’ll Venmo you $10 !!) Hello, After upgrading to macOS Mojave I am no longer to compile basic C++ code “out of the box” on my 2018 MacBook Pro. In short, a “Hello world” program fails, which I am assuming the compiler cannot locate the “iostream” header. After some digging on StackOverflow I found that I can compile if and only if I set the following flag in my compilation call: -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk So I guess my GCC/g++ installation is by default not looking there, but if I specify the .sdk directly it finds what it needs. What I cannot find is how to force my g++ calls to search in this directory for the default headers by default. I found https://gcc.gnu.org/onlinedocs/gcc/Directory-Options.html <https://gcc.gnu.org/onlinedocs/gcc/Directory-Options.html>, but it seemed to be specific for general flags I can set at runtime, not information on how to generally change the default path. Full details here: https://stackoverflow.com/questions/52581857/cant-compile-c-hello-world-with-include-after-upgrading-to-mojave <https://stackoverflow.com/questions/52581857/cant-compile-c-hello-world-with-include-after-upgrading-to-mojave> I’m a student still learning my way around the compiler, so sorry if any of my jargon was imprecise. Any pointers would be appreciated, as I feel as though I’ve exhausted what I can find on Google and the above StackOverflow post didn’t go anywhere. Appreciate it! Kyle
