Install and validate AutoPano on Mac?

I've tried installing autopano-sift-C-2.5.1 with the instructions at the following link..

http://hugin.sourceforge.net/docs/manual/Autopano-sift-C.html

I entered the following in Terminal..

sudo port install autopano-sift-c

..and got the response..

Warning: xcodebuild exists but failed to execute
Warning: Xcode does not appear to be installed; most ports will likely fail to build.
---> Computing dependencies for autopano-sift-c
---> Cleaning autopano-sift-c
---> Scanning binaries for linking errors
---> No broken files found.
---> No broken ports found.

..which is strange since I've got Xcode Version 9.4.1 (9F2000) installed and I just tested opening it without a problem..

..and ideas?

I've found the reason why I was getting the above error..

https://apple.stackexchange.com/questions/46431/xcode-appears-to-be-installed-but-xcodebuild-is-unusable

Apparently the system is looking for xcodebuild in `/Developer/usr/bin/'
but as of Xcode 4.3 (the one that's installed from the App Store)
it's located in the Xcode.app bundle which is in /Applications.

After updating to Xcode Version 9.4.1 (9F2000), I ran this in Terminal..

sudo xcode-select -switch /Applications/Xcode.app

..and then this..

xcode-select -print-path

..which returned the following validation..

/Applications/Xcode.app/Contents/Developer

..and then I ran this..

sudo port install autopano-sift-c

..and got autopano-sift-C-2.5.1 to install without complaining..

---> Computing dependencies for autopano-sift-c
---> Cleaning autopano-sift-c
---> Scanning binaries for linking errors
---> No broken files found.
---> No broken ports found.

I've set the parameters for Autopano-SIFT-C (Configured) in Preferences > Control Point Detectors to the following..

Program: /opt/local/bin/autopano-sift-c

Arguments: --maxmatches %p %o %i

..by still following the instructions here..

http://hugin.sourceforge.net/docs/manual/Autopano-sift-C.html

..but getting the error..

wxExecute Error
Could not execute command: /opt/local/bin/autopano-sift-c --maxmatches 20 /var/folders/mg/lvs511d53x99vzbwl7zktfm40000gn/T/ap_res1cZ0TR "/Users/a/Downloads/003_1S-F25-ISO100-105MM-4700K/NEF/01-01.NEF" "/Users/a/Downloads/003_1S-F25-ISO100-105MM-4700K/NEF/01-02.NEF"

..any ideas?

Autopano-sift-c is discontinued and not active maintained since a long time (mainly because of patent issues).
Cpfind has superseded autopano-sift-c. Cpfind is an integral part of Hugin, so no need to install cpfind extra.

For installing Hugin there should be a readme file in the top level of the dmg. Otherwise ask at the mailing list, there are more MacOS users than here.

One more issue I noticed: Hugin and autopano-sift-c don't work with RAW files. You need the convert the RAW files before feeding to Hugin. (The development version of Hugin contains already a feature to do this conversion using external tools. But it is untested.)