* Makefile (.POSIX): New target. I discovered the need for this when I ran ‘make -n’ and GNU Make executed recipe lines containing $(MAKE) even though they had side effects. When run in POSIX mode, GNU Make won’t execute recipe lines unless they begin with ‘+’. POSIX says the behavior of ‘make’ is undefined unless the Makefile’s first non-comment line has a ‘.POSIX’ target. --- Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Makefile b/Makefile index 8017a14e..da3ee259 100644 --- a/Makefile +++ b/Makefile @@ -1,4 +1,6 @@ # Make and install tzdb code and data. +# Request POSIX conformance; this must be the first non-comment line. +.POSIX: # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. -- 2.39.2