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Declare mkdtemp() only if we're providing it.

Follow our usual style of providing an "extern" for a standard libraryfunction only when we're also providing the implementation. This avoidsissues when the system headers declare the function slightly differentlythan we do, as noted by Caleb Welton.We might have to go to the extent of probing to see if the system headersdeclare the function, but let's not do that until it's demonstrated to benecessary.Oversight in commit9e6b1bf. Back-patchto all supported branches, as that was.

1 parentd4f5cf5 commit7804f35Copy full SHA for 7804f35

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src/include
- port.h

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`‎src/include/port.h`

Lines changed: 4 additions & 3 deletions

Original file line number	Diff line number	Diff line change
`@@ -408,6 +408,10 @@ extern intgetpeereid(int sock, uid_t uid, gid_t gid);`
`408`	`408`	`externintisinf(doublex);`
`409`	`409`	`#endif`
`410`	`410`
	`411`	`+#ifndefHAVE_MKDTEMP`
	`412`	`+externcharmkdtemp(charpath);`
	`413`	`+#endif`
	`414`	`+`
`411`	`415`	`#ifndefHAVE_RINT`
`412`	`416`	`externdoublerint(doublex);`
`413`	`417`	`#endif`
`@@ -476,9 +480,6 @@ extern intpg_check_dir(const char *dir);`
`476`	`480`	`/* port/pgmkdirp.c */`
`477`	`481`	`externintpg_mkdir_p(char*path,intomode);`
`478`	`482`
`479`		`-/* port/mkdtemp.c */`
`480`		`-externcharmkdtemp(charpath);`
`481`		`-`
`482`	`483`	`/* port/pqsignal.c */`
`483`	`484`	`typedefvoid (*pqsigfunc) (intsigno);`
`484`	`485`	`externpqsigfuncpqsignal(intsigno,pqsigfuncfunc);`

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Commit7804f35

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`‎src/include/port.h`

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