libsvg @0.1.4: error: call to undeclared library function 'malloc' with type 'void *(unsigned long)'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]

[amadeus24]

Reinstalling macports on an MB Pro with M1 Max, Sequoia and libsvg quit at build.

[ryandesign (Ryan Carsten Schmidt)]

The log says:

svg_paint.c:42:18: error: call to undeclared library function 'malloc' with type 'void *(unsigned long)'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
   42 |         char            *id = malloc (length+1);
      |                               ^

This is curious. Implicit function declarations have been forbidden since Xcode 12 so I expected this to have been broken on earlier OS versions already, but our ​port health indicators show successful builds on macOS 14 and earlier. Still, this version of libsvg dates back to 2005, so I would not be at all surprised if it contained such bugs.

[jmroot (Joshua Root)]

In cbb7e48e21d439782ec2ef188977d42efeac46fb/macports-ports (master):

libsvg: fix implicit declaration errors

Closes: #71022

[ryandesign (Ryan Carsten Schmidt)]

Ah, that explains it. You previously reported this problem in #66971 on an earlier macOS and we fixed some of the problems then.

[jmroot (Joshua Root)]

I guess maybe some other systems headers were pulling in stdlib.h previously.

[amadeus24]

Now it works, thanks!