ape/cc: accept -p flag; time.h: add timezone_t; patch: add time_rz

[staalmannen]

cc.c: -p (profiling flag) now passes through to native compiler like -w/-F/-N/-T instead of printing 'flag ignored'.

time.h: add timezone_t as a forward-declared opaque type (POSIX.1-2024). Uses 'struct tm_zone *' with __timezone_t_defined guard so gnulib packages that define the full struct remain compatible.

patch/mkfile: add time_rz.$O to LIBO — parse-datetime.c calls tzalloc/tzfree/localtime_rz/mktime_z which are provided by time_rz.c.

https://claude.ai/code/session_01WGAwvvTwDg2yknFkmZ3qzs

[gemini-code-assist]

Code Review

This pull request introduces POSIX.1-2024 compliance by defining the timezone_t type in time.h, adds support for the -p flag in the cc compiler wrapper, and updates the patch utility's build configuration to include time_rz. Feedback suggests that the timezone_t definition in time.h should be accompanied by function prototypes for tzalloc, tzfree, localtime_rz, and mktime_z to prevent implicit declaration warnings.

[gemini-code-assist]

The addition of timezone_t for POSIX.1-2024 compliance is correct, but the associated function prototypes (tzalloc, tzfree, localtime_rz, and mktime_z) are missing. Since the PR description mentions that parse-datetime.c calls these functions, they should be declared here to avoid implicit declaration warnings or errors. Additionally, mktime_z should be included in the descriptive comment.

Suggested change

	/* POSIX.1-2024: opaque timezone handle used by tzalloc/tzfree/localtime_rz */
	#ifndef __timezone_t_defined
	struct tm_zone;
	typedef struct tm_zone *timezone_t;
	#define __timezone_t_defined 1
	#endif
	/* POSIX.1-2024: opaque timezone handle used by tzalloc/tzfree/localtime_rz/mktime_z */
	#ifndef __timezone_t_defined
	struct tm_zone;
	typedef struct tm_zone *timezone_t;
	#define __timezone_t_defined 1
	timezone_t tzalloc(const char *);
	void tzfree(timezone_t);
	struct tm *localtime_rz(timezone_t, const time_t *, struct tm *);
	time_t mktime_z(timezone_t, struct tm *);
	#endif