https://issues.dlang.org/show_bug.cgi?id=21873

          Issue ID: 21873
           Summary: Cannot build build.d on OSX with latest dmd 2.096.1
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Mac OS X
            Status: NEW
          Severity: blocker
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: bugzilla@digitalmars.com

The command:

/Users/walter/dmd.2.096.1/osx/bin/dmd build.d

run in the dmd/src directory produces:

Warning: Syncing file access because of OSX!
Undefined symbols for architecture x86_64:

"__D3std6format15FormatException6__ctorMFNaNbNfAyaQdmC6object9ThrowableZCQCrQCqQCm",
referenced from:

__D3std6format__T14formattedWriteTSQBg5stdio4File17LockingTextWriterTaTAyaZQCgFNfKQBwIAaQrZk
in build.o

__D3std9exception__T7bailOutHTCQBc6format15FormatExceptionZQBnFNaNfAyamMAxaZv
in build.o

__D3std6format__T6getNthVAyaa13_696e7465676572207769647468SQCe6traits10isIntegralTiTQChZQCtFNaNfkQCuZi
in build.o

__D3std6format__T6getNthVAyaa17_696e746567657220707265636973696f6eSQCm6traits10isIntegralTiTQCpZQDbFNaNfkQDcZi
in build.o

__D3std6format__T6getNthVAyaa21_736570617261746f72206469676974207769647468SQCu6traits10isIntegralTiTQCxZQDjFNaNfkQDkZi
in build.o

__D3std6format__T6getNthVAyaa19_736570617261746f7220636861726163746572SQCq6traits10isSomeCharTwTQCtZQDfFNaNfkQDgZw
in build.o

__D3std6format__T14formattedWriteTSQBg5stdio4File17LockingTextWriterTaTkZQCeFNfKQBuIAakZk
in build.o
      ...
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Error: linker exited with status 1

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