On 29/10/2022 13:05, Murray Eisenberg wrote:
During successful reinstall of a number of ports (under Ventura), I see message:Warning: Configuration logfiles contain indications of -Wimplicit-function-declaration; check that features were not accidentally disabled:and then a list of what would appear to be cariou variables found in the config.log.What is that all about?
https://trac.macports.org/wiki/WimplicitFunctionDeclarationYou should file tickets about the packages especially if functionality gets disabled unexpectedly.
The flag is for a compiler like GCC or Clang to warn when a function is being used from its declaration, usually caused by not including the correct header. You can call printf() in GCC/Clang without #include-ing <stdio.h> but this is not standard.
Apple has made implicit declarations as of Xcode 12 Clang to be an error. So if something were to test for a function without including the correct header, it could fail and disable functionality. The port might still build.
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