I have a machine with Windows 10 64-bit 1803, ActivePerl* 5.24.3, and
ActiveTcl 8.6.7.
*(Uses dmake and doesn't have gnu make. I'm not constrained to
ActivePerl; I just didn't know about Strawberry until recently.)
I tried installing Tcl.pm 1.25 from cpanm as well as running the latest
tcl.pm/Makefile.PL on git, but get errors:
> error starting tclsh: $?=-1; $!=Inappropriate I/O control operation
> error writing "stdout": broken pipe
> while executing
> "puts "tclsh=[info nameofexecutable]""
> (file "tclcfg.tcl" line 1)
I.e. from the first error it appears to be dying at line 115:
_die "error starting $tclsh: \$?=$?; \$!=$!\n" if $?!=0;
and the second error is just stderr from tclsh (complaining it couldn't
write to stdout because Perl died)…
But running `tclsh tclcfg.tcl` both manually and from Perl seems to give
the correct output. In fact if I comment out line 115 (`_die … if
$?!=0`), then the tclsh output gets put in $tclcfg, and Makefile.PL
seems to finish as expected.
I'm not sure what's wrong here. The only thing that seems strange to me
is that $?=-1 for opening a command pipe on Windows (I can get $?=-1 for
something like `open(my $fh, "echo hello |")`) but not on other OSes
(e.g. macOS, where $?=0 when open() works). I have not found if/where
this is explained in `perldoc open` or `perldoc perlipc`.
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