Separate build directory using xcodebuild

Question

The man page for xcodebuild reads:

Run xcodebuild from the directory containing your project (i.e. the directory containing the project

Answer 1

In my project, setting SYMROOT turned out to be sufficient to build the project in a different location, leaving other locations untouched.

From Apple's Xcode Build Setting Reference (which I came across via another answer here, thanks!):

SYMROOT (Build Products Path)

Description: Directory path. Identifies the root of the directory hierarchy that contains product files and intermediate build files. Product and build files are placed in subdirectories of this directory.

...

Affects: BUILT_PRODUCTS_DIR, CONFIGURATION_BUILD_DIR (...)

This setting is also mentioned a few times in the xcodebuild man page:

Available actions are:

build: Build the target in the build root (SYMROOT)...

clean: Remove build products and intermediate files from the build root (SYMROOT)....