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f2857af485
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
22 lines
717 B
Text
22 lines
717 B
Text
# src/template/cygwin
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# Prefer unnamed POSIX semaphores if available, unless user overrides choice
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if test x"$PREFERRED_SEMAPHORES" = x"" ; then
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PREFERRED_SEMAPHORES=UNNAMED_POSIX
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fi
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SRCH_LIB="/usr/local/lib"
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# This is required for ppoll(2), and perhaps other things
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CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
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# Extra CFLAGS for code that will go into a shared library
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CFLAGS_SL=""
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# --allow-multiple-definition is required to link pg_dump because it finds
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# pg_toupper() etc. in both libpq and pgport
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# we'd prefer to use --disable-auto-import to match MSVC linking behavior,
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# but support for it in Cygwin is too haphazard
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LDFLAGS="$LDFLAGS -Wl,--allow-multiple-definition -Wl,--enable-auto-import"
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DLSUFFIX=".dll"
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