Ken Takata wrote:
> > > 2018/8/7 Tue 10:48:19 UTC+9 Michael Soyka wrote:
> > > > On 8/6/2018 8:45 PM, Ken Takata wrote:
> > [...]
> > > > >> It appears src/Make_cyg_ming.mak also does this:
> > > > >>
> > > > >> ifneq (sh.exe, $(SHELL))
> > > > >> DEL = rm
> > > > >> MKDIR = mkdir -p
> > > > >> DIRSLASH = /
> > > > >> else
> > > > >> DEL = del
> > > > >> MKDIR = mkdir
> > > > >> DIRSLASH = \\
> > > > >> endif
> > > > >>
> > > > >> And src/GvimExt/Make_ming.mak
> > > > >>
> > > > >> ifneq (sh.exe, $(SHELL))
> > > > >> DEL = rm
> > > > >> else
> > > > >> DEL = del
> > > > >> endif
> > > > >>
> > > > >> Is this really wrong?
> > > > > No. This is really confusing, but this is correct.
> > > > >
> > > > > If the makefile is executed by the "mingw32-make" command from
> > > > > cmd.exe,
> > > > > $SHELL is set to "sh.exe" (without any path). In this case, unix-like
> > > > > commands
> > > > > might not work and dos-style path is needed.
> > > > I run mingw32-make from a command window and, as I've stated, the value
> > > > of SHELL includes a path specification.
> > >
> > > Ah, running from cmd.exe or bash was not the cause of the difference.
> > > The difference is caused by the $PATH.
> > >
> > > If sh.exe is found in the $PATH, $SHELL is set to the full path of the
> > > sh.exe.
> > > If it isn't found, $SHELL is set to "sh.exe" without the path
> > > specification.
> > >
> > > So the conclusion is still not changed. The makefiles are correct. If
> > > $SHELL
> > > is exactly same as "sh.exe", unix-like commands are not available and
> > > paths
> > > must be dos-style, otherwise unix-like commands and unix-style paths can
> > > be
> > > used.
> >
> > Since this is confusing, it would be good to add an explanation. How
> > about this:
> >
> > # About the "sh.exe" condition, as explained by Ken Takata:
>
> Well, my name is not important here. ;-)
So we have someone to blame^Wask when it turns out wrong :-).
> I didn't know how to detect if unix-like commands can be used from a
> makefile before seeing these makefiles.
>
>
> > #
> > # If the makefile is executed and sh.exe is not found in $PATH, then
> > $SHELL is
>
> Isn't it better to mention the "mingw32-make" command?
>
>
> > # set to "sh.exe" (without any path). In this case, unix-like commands
> > might
> > # not work and a dos-style path is needed.
> > #
> > # If the makefile is executed and sh.exe IS found in $PATH, then $SHELL
> > is set
>
> This is the same.
>
>
> > # with the actual path of sh.exe (e.g. "C:/msys64/usr/bin/sh.exe").
> > In this
> > # case, unix-like commands can be used.
> > #
> > # If it is executed by the "make" command from cmd.exe, $SHELL is set to
> > # "/bin/sh". If the "make" command is in the $PATH, other unix-like
> > commands
> > # might also work.
> > #
> > # If it is executed by the "make" command from a unix-like shell,
> > # $SHELL is set with the unix-style path (e.g. "/bin/bash").
> > # In this case, unix-like commands can be used.
> > #
> > ifneq (sh.exe, $(SHELL))
Do you mean like this:
# About the "sh.exe" condition, as explained by Ken Takata:
#
# If the makefile is executed with mingw32-make and sh.exe is not found
in
# $PATH, then $SHELL is set to "sh.exe" (without any path). In this
case,
# unix-like commands might not work and a dos-style path is needed.
#
# If the makefile is executed with mingw32-make and sh.exe IS found in
$PATH,
# then $SHELL is set with the actual path of sh.exe (e.g.
# "C:/msys64/usr/bin/sh.exe"). In this case, unix-like commands can be
used.
#
# If it is executed by the "make" command from cmd.exe, $SHELL is set to
# "/bin/sh". If the "make" command is in the $PATH, other unix-like
commands
# might also work.
#
# If it is executed by the "make" command from a unix-like shell,
# $SHELL is set with the unix-style path (e.g. "/bin/bash").
# In this case, unix-like commands can be used.
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