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# src/template/darwin
# Note: Darwin is the original code name for macOS, also known as OS X.
# We still use "darwin" as the port name, partly because config.guess does.
# Select where system include files should be sought, if user didn't say.
if test x"$PG_SYSROOT" = x"" ; then
# This is far more complicated than it ought to be. We first ask
# "xcrun --show-sdk-path", which seems to match the default -isysroot
# setting of Apple's compilers.
PG_SYSROOT=`xcrun --show-sdk-path 2>/dev/null`
# That may fail, or produce a result that is not version-specific (i.e.,
# just ".../SDKs/MacOSX.sdk"). Using a version-specific sysroot seems
# desirable, so if the path is a non-version-specific symlink, expand it.
if test -L "$PG_SYSROOT"; then
if expr x"$PG_SYSROOT" : '.*[0-9]\.[0-9][^/]*$' >/dev/null ; then : okay
else
PG_SYSROOT=`expr "$PG_SYSROOT" : '\(.*\)/'`/`readlink "$PG_SYSROOT"`
fi
fi
# If there are still not digits in the directory name, try
# "xcrun --sdk macosx --show-sdk-path"; and if that still doesn't work,
# fall back to asking xcodebuild, which is often a good deal slower.
if expr x"$PG_SYSROOT" : '.*[0-9]\.[0-9][^/]*$' >/dev/null ; then : okay
else
PG_SYSROOT=`xcrun --sdk macosx --show-sdk-path 2>/dev/null`
if expr x"$PG_SYSROOT" : '.*[0-9]\.[0-9][^/]*$' >/dev/null ; then : okay
else
PG_SYSROOT=`xcodebuild -version -sdk macosx Path 2>/dev/null`
fi
fi
fi
# Validate the result: if it doesn't point at a directory, ignore it.
if test x"$PG_SYSROOT" != x"" ; then
if test -d "$PG_SYSROOT" ; then
CPPFLAGS="-isysroot $PG_SYSROOT $CPPFLAGS"
LDFLAGS="-isysroot $PG_SYSROOT $LDFLAGS"
else
PG_SYSROOT=""
fi
fi
# Extra CFLAGS for code that will go into a shared library
CFLAGS_SL=""
# Select appropriate semaphore support. Darwin 6.0 (macOS 10.2) and up
# support System V semaphores; before that we have to use named POSIX
# semaphores, which are less good for our purposes because they eat a
# file descriptor per backend per max_connection slot.
case $host_os in
darwin[015].*)
USE_NAMED_POSIX_SEMAPHORES=1
;;
*)
USE_SYSV_SEMAPHORES=1
;;
esac
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