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Upgrading to Catalina from Mojave can introduce issues when compiling programs that rely on the
After the upgrade, attempting to compile code using the
Catalina purges and protects the /usr/include directory, which is where the C headers are typically found. As a result, build systems may fail to locate the necessary headers.
To resolve this issue, it is necessary to point the build system to the correct headers using the -isysroot compiler flag. Here are the steps to do so:
Determine the system SDK path using xcrun --show-sdk-path, and modify the build system accordingly:
Following these steps should resolve the issue and allow programs using the
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