[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: building DLLs with libtool and mingW - do I need the -o option to ge

From: Bob Friesenhahn
Subject: Re: building DLLs with libtool and mingW - do I need the -o option to get a *.dll file?
Date: Wed, 18 May 2005 17:21:46 -0500 (CDT)

On Wed, 18 May 2005, Ed Hartnett wrote:

Bob Friesenhahn <address@hidden> writes:

What version of libtool are you using?

I'm using 1.5.10. I will check out the libtool web page and try and
get something more recent to work with.

Just a little reality check here: when it works for you, you end up
with a windows DLL file ending in .dll, correct?

Yes.  For example, "magick/.libs/libGraphicsMagick-2.dll".

Thanks for the help! When I get our library's configure files capable
of building windows DLLs, I will build a shrine to libtool and mingW
programmers, with life-sized statues, and hire ten computer science
students to meditate there on the impermanence of existence, the
putrefaction of the flesh, and the difficulty of maintaining (and
testing) multiple build environments.

Unfortunately, MinGW and libtool have not always been the best of friends. However, it is well worth the effort if you consider that Windows is just one of many targets. There is no valid reason that one OS should take more than 10X the effort of any other OS to support. MinGW is free, while other compilers may cost lots of $$$. Libtool helps reduce the effort (when it works).

The operation of libtool for MinGW should be very similar to Cygwin. One big difference is that the result starts with 'lib' rather than 'cyg'. Another difference is that Cygwin can be counted on to have a richer toolset available than MinGW so some tests are different for MinGW.

I suggest installing the 'MSYS' shell environment for MinGW. It is very similar to Cygwin, but much smaller. The install takes only a few minutes. That is what I have tested libtool under. Libtool may behave differently if it is executed under Cygwin. Building under Cygwin while targeting MinGW is essentially a cross-compile.

Bob Friesenhahn
GraphicsMagick Maintainer,

reply via email to

[Prev in Thread] Current Thread [Next in Thread]