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Thomas Munro 2b1f580ee2 Remove configure probes for symlink/readlink, and dead code. ... symlink() and readlink() are in SUSv2 and all targeted Unix systems have them. We have partial emulation on Windows. Code that raised runtime errors on systems without it has been dead for years, so we can remove that and also references to such systems in the documentation. Define HAVE_READLINK and HAVE_SYMLINK macros on Unix. Our Windows replacement functions based on junction points can't be used for relative paths or for non-directories, so the macros can be used to check for full symlink support. The places that deal with tablespaces can just use symlink functions without checking the macros. (If they did check the macros, they'd need to provide an #else branch with a runtime or compile time error, and it'd be dead code.) Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Reviewed-by: Andres Freund <andres@anarazel.de> Discussion: https://postgr.es/m/CA+hUKGJ3LHeP9w5Fgzdr4G8AnEtJ=z=p6hGDEm4qYGEUX5B6fQ@mail.gmail.com		3 years ago
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sgml	Remove configure probes for symlink/readlink, and dead code.	3 years ago
Makefile	…