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Re: MAKE_DLL for DLMs [message #42263]

Fri, 21 January 2005 09:55

JD Smith
Messages: 850
Registered: December 1999

Senior Member

On Fri, 21 Jan 2005 08:03:45 -0500, Haje Korth wrote:

> JD,
> I usually write all my software for myself and never worry about network
> installation. Why does every user need to compile the dlm separately? Can't
> you compile it and throw it in the idl binary directory for everyone to use?
> The only other possibility I see is that the user uses make_dll in a local
> directory and they set ! dlm_path to point to it.

The main reason MAKE_DLL exists is to provide a platform-agnostic way
to compile C files into DLMs, which will work on most systems which
have a compiler, now or in the future. Distributing IDL code is
relatively easy: take care not to use indistinct names that will
clash, tell the user to drop the package in with their other IDL
packages, and off you go, with nary a care about updated IDL versions,
etc.

Distributing externally compiled binaries raises the bar considerably,
as you now have to contend with various OS/compiler/library/IDL
exported interface versioning issues. So, compiling once and throwing
it in with the IDL source just doesn't cut it. You can either have a
tedious Makefile that the user is required to run, or simply use
MAKE_DLL. This solution is almost perfect, except that the default
user-writable location for compiled libraries (in
~/.idl/idl_blah/compile_dir) isn't visible to IDL's DLM search, which
means you have to move it somewhere which is, which means you have to
make assumptions about write permissions. Not pretty.

JD

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[Message index]

		Re: MAKE_DLL for DLMs By: JD Smith on Fri, 21 January 2005 09:55
		Re: MAKE_DLL for DLMs By: David Fanning on Fri, 21 January 2005 08:02
		Re: MAKE_DLL for DLMs By: Haje Korth on Fri, 21 January 2005 07:28
		Re: MAKE_DLL for DLMs By: David Fanning on Fri, 21 January 2005 06:05
		Re: MAKE_DLL for DLMs By: Haje Korth on Fri, 21 January 2005 05:03
		Re: MAKE_DLL for DLMs By: JD Smith on Thu, 20 January 2005 08:58
		Re: MAKE_DLL for DLMs By: Haje Korth on Thu, 20 January 2005 05:09

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