[Bug 239333] bmake Entering/Leaving messages not suppresed by .SILENT:

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239333

            Bug ID: 239333
           Summary: bmake Entering/Leaving messages not suppresed by
                    .SILENT:
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs at FreeBSD.org
          Reporter: d at dcepelik.cz

URL: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/make.html

POSIX.2017 states the following about -s: "Do not write makefile command lines
or touch messages (see -t) to standard output before executing. This mode shall
be the same as if the special target .SILENT were specified without
prerequisites."

However, with -s the "Entering/Leaving directory ..." messages are suppressed,
while with .SILENT: they're not.

I'm not sure whether bmake is actually aiming for POSIX compliance (it would
seem so), if that's the case, this minor discrepancy should be fixed.

  ~% uname -a
  Linux a285 5.1.16-arch1-1-ARCH #1 SMP PREEMPT Wed Jul 3 20:23:07 UTC 2019
x86_64 GNU/Linux

  ~% pacman -Qi bmake | fgrep Version
  Version         : 20181221-1

Since this is relatively obscure bug, I assume this wasn't addressed before and
all versions of bmake are affected.

To demonstrate, two Makefiles are needed. First:

  ~/bsdreport% cat Makefile
  .POSIX:
  .PHONY: all
  .SILENT:

  all:
          make -f Makefile.2

Second:

  ~/bsdreport% cat Makefile.2
  foo:
          touch $@

Then:

  ~/bsdreport% bmake
  make[1]: Entering directory '/home/d/bsdreport'
  make[1]: 'foo' is up to date.
  make[1]: Leaving directory '/home/d/bsdreport'

While bmake -s is indeed silent. (The help for -s states that -s is equivalent
to prefixing each command with @; that's not true as adding @ before the
recursive make call does not suppress the Entering/Leaving messages.)

Please let me know if I can provide further details.

- David

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