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From: Marius S. <li...@sc...> - 2025-04-27 18:57:09
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This morning my FreeBSD Poudriere build system updated SSHGuard to version 2.5.0.
When I attempted to update the MacPorts Portfile (I’m the maintainer), I got the following build error:
../common/sandbox.c:43:9: error: call to undeclared function 'setresgid'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
43 | if (setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) == -1) {
| ^
../common/sandbox.c:43:9: note: did you mean 'setregid'?
/Library/Developer/CommandLineTools/SDKs/MacOSX14.sdk/usr/include/unistd.h:593:6: note: 'setregid' declared here
593 | int setregid(gid_t, gid_t) __DARWIN_ALIAS(setregid);
| ^
../common/sandbox.c:46:9: error: call to undeclared function 'setresuid'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
46 | if (setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid) == -1) {
| ^
2 errors generated.
make[2]: *** [sandbox.o] Error 1
There is no “setresgid" function in macOS.
It should be defined in <unistd.h>, but doesn’t appear there.
It appears to be a GNU/Linux function (which FreeBSD also implements).
Marius
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Marius Schamschula
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