Re: g++ and -nostdlib

[Charles Wilson]

On 11/8/2013 1:49 PM, Bob Friesenhahn wrote:
> Isn't it because libtool wants to control the order of the linking and
> assure that all dependencies (including static) are tracked/known and
> applied at the correct times?  It wants to assure that static
> dependencies are linked into the dependent program rather than into some
> dependent shared library (and thus causing a problem).
>
> It was common (and perhaps still is) for the GNU C++ library to be
> delivered as a static library for Windows/MinGW because C++ exceptions
> were not handled properly when thrown by DLLs.
>
> Quite a lot of effort went into making this work the way it currently does.
>
> First libtool tries to take away all of the libraries which would be
> added automatically and then it applies the libraries that GCC says it
> would use at the correct time.

One of my wishlist roundtuit items is to special-case this behavior for 
libtool + GNU toolchains.  For that combo, instead of the procedure Bob 
outlines, and then using $LD to link....just use the compiler driver 
(e.g. g++, or gfortran, or gcc) to link, WITHOUT -nostdlib [1].  We're 
already passing the ABI-modifying -m and -f flags anyway, and it would 
really REALLY simplify libtool's logic...

[1] unless of course the end user put -nostdlib in $LDFLAGS or something.

--
Chuck