Xcode: Switch to the "new build system" for Xcode 12 and above

Provide an option to switch back to the original build system via
`-T buildsystem=1`.

Fixes: #18088
This commit is contained in:
Brad King
2020-09-14 15:02:47 -04:00
parent 2db623f554
commit 8d5f4c4db9
26 changed files with 423 additions and 31 deletions
@@ -0,0 +1,13 @@
^CMake Error in CMakeLists.txt:
The custom command generating
[^
]*/Tests/RunCMake/XcodeProject/XcodeDuplicateCustomCommand-build/out.txt
is attached to multiple targets:
drive[0-9]
drive[0-9]
but none of these is a common dependency of the other\(s\). This is not
allowed by the Xcode "new build system".