Path parsing broken on Windows

[zmughal]

On the line

Alien-Base/lib/Alien/Base.pm

Line 33 in 2f64e7a

my @libs = shellwords( $class->libs );

,
Alien::Base uses Text::ParseWords::shellwords to parse out the linker
flags. The problem is if you use shellwords, it currently does not work with
Windows paths.

use Text::ParseWords qw(shellwords)

## Unix path [ok]
shellwords( "-L/path/to/lib -lzlib" )
# [
#     [0] "-L/path/to/lib",
#     [1] "-lzlib"
# ]

## Windows path with forward slashes [ok]
shellwords( "-LC:/path/to/lib -lzlib" )
# [
#     [0] "-LC:/path/to/lib",
#     [1] "-lzlib"
# ]

## Windows path with backslashes [not ok]
shellwords( "-LC:\\path\\to\\lib -lzlib" )
# [
#     [0] "-LC:pathtolib",
#     [1] "-lzlib"
# ]

Here's an example of an Alien::Base config where that happens for me: https://gist.github.com/zmughal/cab88c49f453f4463f32. This leads to errors in resolving the DLLs.

[zmughal]

I think something that uses shellwords() on Unix and Text::ParseWords::parse_line( '\s+', 1, "-LC:\\a\\b\\c -lzlib") on Windows might do the trick.

I'll add a function and add some test cases.

[mohawk2]

PRs welcome? ;-)

[mohawk2]

@zmughal, merge this! ;-)

[zmughal]

closing with merge of #42.