libtool woes

[Ryan Schmidt]

On Feb 3, 2008, at 13:27, Peter O'Gorman wrote:

> paul beard wrote:
>
>> On Feb 3, 2008 1:32 AM, Anders F Björklund wrote:
>>
>>> paul beard wrote:
>>>
>>>> Looks like I have some problem with libtool.
>>>> libIDL and Apache2 both fail to upgrade.
>>>     ...
>>>> libtool: compile: unable to infer tagged configuration
>>>> libtool: compile: specify a tag with `--tag'
>>>
>>> This problem is since the change to "/usr/bin/gcc-4.0" for CC.
>>> Switching compiler back to "gcc" (or "gcc-4.0") makes it work.
>>
>> what baffles me about this is that the libtool that's being  
>> invoked is
>> part of the port's code:
>>
>> /bin/sh ./libtool --tag=CC   --mode=link gcc  -O2 -no-cpp-precomp
>> -version-info 0:0:0 -L/opt/local/lib -lglib-2.0 -lintl -liconv
>> -no-undefined -L/opt/local/lib -o libIDL-2.la -rpath /opt/local/lib
>> parser.lo lexer.lo ns.lo util.lo
>>
>> if I run port configure (with -d), what's happening here?
>>
>> configure: creating libtool
>> appending configuration tag "CXX" to libtool
>> checking for ld used by /usr/bin/g++-4.0... /usr/bin/ld
>> checking if the linker (/usr/bin/ld) is GNU ld... no
>> checking whether the /usr/bin/g++-4.0 linker (/usr/bin/ld) supports
>> shared libraries... yes
>
> libtool is usually built in the build directory by running  
> configure, it
> is included in the package. I had a quick look at the bugs mentioned:
>
> http://trac.macosforge.org/projects/macports/ticket/13653
> http://trac.macosforge.org/projects/macports/ticket/13648
>
> In both cases an installed GNU libtool

which installed GNU libtool? you mean the libtool that the project  
built for itself?

> is being called with a different
> compiler (at least a different compiler name) than it was built with.

what compiler name was it built with, and what compiler name is it  
being called with? and why are they different?

> In
> these cases the tag *must* be specified --tag=CC or --tag=CXX etc. as
> GNU libtool can not guess it. Use the CC tag for C sources and the CXX
> tag for c++.
>
> For automake based projects automake adds the --tag when compiling  
> with
> gnu libtool, for other projects upstream developer should be adding  
> it,
> please send them patches.