msys path conversion (or cygpath for msys?)

Question

I need to pass /DEF:c:\\filepath\\myLib.def\" command line option from a bash script to MS compiler/linker. The path is generated as part of build process by a bash script.

Answer 1

MSYS cygpath

Program

This program convert a DOS path to a UNIX path and vice versa

#!/bin/env perl
# DOS to UNIX path conversion
# © John S. Peterson. License GNU GPL 3.
use strict;
use Getopt::Std;

# usage
if ($#ARGV == -1) {
    print 'Usage: cygpath (-w) NAME...

Convert Unix and Windows format paths

Output type options:

  -w, --windows         print Windows form of NAMEs (C:\WINNT)
';
    exit 0;
}

# option
my %opt;
getopts('w', \%opt);

# convert path
my @r;
foreach my $e (@ARGV) {
    if ($opt{w}) {
        # add drive letter suffix
        $e =~ s,^\/([A-Za-z])\/,\1:\/,;
        $e =~ s,\/,\\,g;

    } else {
        $e =~ s,\\,\/,g;
        # add leading slash
        $e = "/$e";
        # remove drive letter suffix
        $e =~ s,:,,;
    }

    push @r, $e;
}

print join("\n", @r);

Compared to Cygwin cygpath

The output from this program is better than the output from Cygwin cygpath in MSYS because

• Cygwin cygpath remove the Cygwin home from a converted path, f.e.

cygpath "$CYGWIN/usr/local/bin"
/usr/local/bin

which is a problem because

• it's sometimes useful to convert a DOS Cygwin path to a UNIX path for the purpose of copying files from Cygwin to MSYS

This program doesn't remove the Cygwin home

cygpath "$CYGWIN/usr/local/bin"
/c/file/program/cygwin/usr/local/bin

Compared to automatic MSYS path conversion

Manual path conversion has a use in MSYS because

• the automatic path conversion is inadequate

for f.e.

• devkitPro make