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Thomas Munro f2857af485 Use unnamed POSIX semaphores on Cygwin. ... Testing on CI showed that Cygwin's semctl() can fail with EAGAIN (possibly due to resource limits in cygserver that could be tuned, not examined). Switch to so-called POSIX semaphores instead, which don't seem to fail in that way (possibly due to a more direct implementation using Windows semaphore primitives instead of talking to cygserver, based on a cursory glance at the source). Other known problems still prevent PostgreSQL from running on Cygwin without random crashes, but this rarer problem was noticed while testing. Discussion: https://postgr.es/m/CA%2BhUKG%2BQ6DU4Ov9LrvUyDcF3oHS4KMRVSKmVGaeePq-kOyG9gA%40mail.gmail.com		3 years ago
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aix	aix: Remove checks for very old OS versions	3 years ago
cygwin	Use unnamed POSIX semaphores on Cygwin.	3 years ago
darwin	Move darwin sysroot determination into separate file	3 years ago
freebsd	Select CFLAGS_SL at configure time, not in platform-specific Makefiles.	6 years ago
linux	Select CFLAGS_SL at configure time, not in platform-specific Makefiles.	6 years ago
netbsd	On NetBSD, force dynamic symbol resolution at postmaster start.	3 years ago
openbsd	Select CFLAGS_SL at configure time, not in platform-specific Makefiles.	6 years ago
solaris	Select CFLAGS_SL at configure time, not in platform-specific Makefiles.	6 years ago
win32	Refactor DLSUFFIX handling	4 years ago