Re: [Mingw-users] Can't link in MSYS

[Nathan S. <nat...@pk...>]

Nathan Schulte wrote:
> Hey all, I'm working on a project involving DirectShow and GTK+.  I 
> recently setup a fresh MSYS and MinGW environment on a laptop I am using 
> to build the project with.
> 
> The issue is that whenever I try to compile and link the simplest code 
> (like the gtkmm hello world example) as follows:
> 
> 	g++ `pkg-config --libs --cflags gtkmm-2.4` main.cpp
> 
> all I get are a bunch of linker errors, as though it's not even trying 
> to link.  pkg-config outputs the proper goods, and the paths are 
> correct, so I know that's working right.
> 
> However, when I issue the same command (copying and pasting the goods 
> from pkg-config of course) in a command prompt (CMD.exe), it compiles 
> and links no problem.  I cannot figure out why this is.  Having to 
> switch back and forth between shells is a pain, and using pkg-config is 
> a real time saver.
> 
> Does anyone know why this may be happening?
> 
> -Nathan
> 
> 
> ------------------------------------------------------------------------------
> Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are
> powering Web 2.0 with engaging, cross-platform capabilities. Quickly and
> easily build your RIAs with Flex Builder, the Eclipse(TM)based development
> software that enables intelligent coding and step-through debugging.
> Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com

I have found the issue.  It seems as though any -l options need to come 
_after_ the source files.

	g++ main.cpp `pkg-config --libs --cflags gtkmm-2.4`

is ok, but

	gt++ `pkg-config --libs --cflags gtkmm-2.4` main.cpp

is not.

The command I was piecing together in the dos prompt had main.cpp before 
the pkg-config output, causing the effect I described, but not because 
of why I described.

Is this a bug, or is this how gcc/g++ work?