MYEXTLIB on Win32 for paths with a space in them

[zmughal]

On Win32/Strawberry Perl, I have a MYEXTLIB that needs to be C:\Program Files\R\R-3.1.2\bin\x64\R.dll. However, when I go set it to that, I get the following error

dmake: Error: -- `C:\Program' not found, and can't be made

If, instead, I use the shortpath C:\PROGRA~1\R\R-3.1.2\bin\x64\R.dll, the build works fine.

This path needs to be used both by MYEXTLIB and %PATH%, since it is a DLL.

For @mohawk2,

07:08:21 [ @mohawk2] then i can make it a listref, and then make a DEP var, and a normal var, and quote them appropriately

[mohawk2]

I propose to treat MYEXTLIB as singular, because historically EUMM has been about one "thing" per Makefile.PL. Therefore it will be treated as referring to one file. If we get demand for multiple, we can create a new arg, MYEXTLIBS, which will take an array-ref, and do the right thing with those.

[Leont]

I propose to treat MYEXTLIB as singular, because historically EUMM has been about one "thing" per Makefile.PL. Therefore it will be treated as referring to one file.

I don't think this is true, though it containing multiple items is uncommon.

[zmughal]

Interestingly enough, I have co-maint on that Graphics::VTK module, so I plan on updating it. Once I figure out a nice way to do all the C++ XS bindings.

[mohawk2]

Good catch @Leont. Unfortunately, with the code as it is today, any attempt at space-protection will not be portable across all makes, since $(MYEXTLIB) is used both as a dependency and as a recipe content ie shell var. When I make MYEXTLIB be possibly list-valued, this will be easily fixable.

[mohawk2]

@zmughal, for a different approach see https://rt.perl.org/Public/Bug/Display.html?id=123413.