tippecanoe @2.28.0: error: use of undeclared identifier 'errno'

[ryandesign (Ryan Carsten Schmidt)]

​https://build.macports.org/builders/ports-10.15_x86_64-builder/builds/149120/steps/install-port/logs/stdio

memfile.cpp:80:52: error: use of undeclared identifier 'errno'
                fprintf(stderr, "fdopen memfile: %s\n", strerror(errno));
                                                                 ^
memfile.cpp:85:51: error: use of undeclared identifier 'errno'
                fprintf(stderr, "memfile write: %s\n", strerror(errno));
                                                                ^
2 errors generated.
make: *** [memfile.o] Error 1

[sikmir (Nikolay Korotkiy)]

Can't reproduce with macOS 12.6.7 x86_64, Xcode 14.2.

[jmroot (Joshua Root)]

Needs to #include <cerrno>. It's not unusual that forgetting to include a header will not result in an error on some OS versions, because some other header that is included happens to internally include the forgotten one.

[jmroot (Joshua Root)]

​https://github.com/felt/tippecanoe/pull/122

[sikmir (Nikolay Korotkiy)]

Fixed in the upstream since 2.29.0