`npm install` fails on node-gyp rebuild with `gyp: No Xcode or CLT version detected!`

Even though you have them installed (my case), but by upgrading to Catalina (10.15.*) you can get this error (my case 🙂 ). Therefore, simply installing wouldn’t help as you will get an error that they are already installed. Therefore you need to hopefully just (I) reset the tool or in worse case (II) uninstall … Read more

Catalina C++: Using headers yield error: no member named ‘signbit’ in the global namespace

I’m curious: What compiler are you using? What’s the value of CMAKE_OSX_SYSROOT? I’m fairly convinced this is the result of a wrong CMAKE_OSX_SYSROOT. I had the problem you’re describing when using python bindings for clang (where CMake doesn’t manage the compiler call), but I managed to recreate the error in CMake by doing: set(CMAKE_OSX_SYSROOT “”) … Read more

Can’t compile a C program on a Mac after upgrading to Catalina 10.15

Before you proceed, make sure to install xcode command line tools. xcode-select –install Actually, you can do it! Actually all the C headers are found here in this folder: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/ We just need to create symlink for all the headers file into this folder: /usr/local/include/ It worked for me! the following command line will take … Read more

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