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Re: [bugs #10577] Fix symlinks for use on Windows

From: Alex Perez
Subject: Re: [bugs #10577] Fix symlinks for use on Windows
Date: Wed, 03 Nov 2004 17:30:00 -0800
User-agent: Mozilla Thunderbird 0.8 (X11/20040913)

Patrick Middleton wrote:


Date: Wed 11/03/2004 at 11:49       By: Patrick Middleton <patrickx>
Filesystem links on Windows are a dead loss.  Possibly the Cygwin and MinGW 
crews will get round one day to implementing 'ln' in terms of Windows 
shortcuts, but I hope not: that'd be yet more incompatible semantics with which 
to deal.

NeXT^WApple never bothered making the ProjectBuilder pb_makefile system work 
with soft links on Windows.  A case in point: they'd have used soft links when 
building a framework so that Name.framework/Name pointed to 
Name.framework/Versions/Current/Name , which in turn pointed to 
Name.framework/Versions/{ExplicitLatestVersion}/Name .  Which would have been 
useless on Windows anyway as versioned frameworks wouldn't work, because the 
dll loading mechanism is going to find the current Name.dll , whatever that may 
be, in .../Library/Tools rather than the appropriate versioned dll from within 

Lately I have been trying to build stuff, notably ProjectCenter 0.4.0 on 
WindowsXP/MinGW/GNUstep base 1.10.0 and getting all sorts of build-related 

Recent revisions to $GNUSTEP_SYSTEM_ROOT/Library/Makefiles/config.make have 
introduced a make macro LN_S .  By setting that to 'echo no ln -s' on MinGW, 
and adding similar macros for rm -f and rm -rf , and setting RM_F to be rm -rf 
on MinGW, and editing all project makefiles and all standard makefiles to use 
these macros: 'make' and 'make clean' appear to work a lot better.  Watch out 
for rm -[Rr]f when editing.

Date: Wed 10/06/2004 at 08:04       By: 0 <None>
after investigating I found that it is because obj and Current are 'symlinks' 
to actual directories. That is, they are created with $(LN_S).

well, in config.make I found that LN_S = ln -s. This is because 'ln -s' *does* 
exist in msys but what it does is a 'cp -r'. This explains the error message in 

the workaround i used was to replace any

'rm -f linkdir; $(LN_S) realdir linkdir'
(which fails with message: 'linkdir is a directory')


'$(LN_S) -f realdir linkdir'
(ln -s -f forces the remove and the copy of the new dir)

impacted files were:


but of course obj and Current remain useless, and i live with it.

This should really be fixed in gnsutep-make. MINGW's ln -s does exist, but it just does a recursive copy. As such, I propose that we modify GNUstep-make to not ever use ln -s under mingw/cygwin. Does anyone here have a problem with that?

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