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-rw-r--r--src/template/darwin22
1 files changed, 19 insertions, 3 deletions
diff --git a/src/template/darwin b/src/template/darwin
index 32414d21a98..1868c147cbf 100644
--- a/src/template/darwin
+++ b/src/template/darwin
@@ -3,11 +3,27 @@
# 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.
+# Select where system include files should be sought, if user didn't say.
if test x"$PG_SYSROOT" = x"" ; then
- PG_SYSROOT=`xcodebuild -version -sdk macosx Path 2>/dev/null`
+ # This is far more complicated than it ought to be. We first ask
+ # "xcrun --show-sdk-path", which seems to match the default -isysroot
+ # setting of Apple's compilers. However, that may produce no result or
+ # a result that is not version-specific (i.e., just ".../SDKs/MacOSX.sdk").
+ # Using a version-specific sysroot seems desirable, so if there are not
+ # digits in the directory name, try "xcrun --sdk macosx --show-sdk-path";
+ # and if that still doesn't work, fall back to asking xcodebuild,
+ # which is often a good deal slower.
+ PG_SYSROOT=`xcrun --show-sdk-path 2>/dev/null`
+ if expr x"$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][^/]*$' >/dev/null ; then : okay
+ else
+ PG_SYSROOT=`xcodebuild -version -sdk macosx Path 2>/dev/null`
+ fi
+ fi
fi
-# Old xcodebuild versions may produce garbage, so validate the result.
+# Validate the result: if it doesn't point at a directory, ignore it.
if test x"$PG_SYSROOT" != x"" ; then
if test -d "$PG_SYSROOT" ; then
CPPFLAGS="-isysroot $PG_SYSROOT $CPPFLAGS"