Re: [Gnucap-devel] CMake build system progress

[Felix Salfelder]

On Tue, May 20, 2014 at 03:12:37PM -0500, Kevin Zheng wrote:
> Hi Felix,
> 
> On 05/20/2014 14:49, Felix Salfelder wrote:
> > Linking CXX executable gnucap-modelgen
> > ../lib/libgnucap.so: undefined reference to `dlerror'
> > ../lib/libgnucap.so: undefined reference to `dlopen'
> > ../lib/libgnucap.so: undefined reference to `dlclose'
> > collect2: error: ld returned 1 exit status
> > modelgen/CMakeFiles/gnucap-modelgen.dir/build.make:314: recipe for target 
> > 'modelgen/gnucap-modelgen' failed
> > make[2]: *** [modelgen/gnucap-modelgen] Error 1
> 
> Sorry, that was me being clumsy and forgetting to link with libdl even
> though I checked for it earlier. My operating system provides these
> functions with -lc, so no linker flag is required.
> 
> I committed a fix in 61018a8, but I'm not able to test it. Could you try
> to build it again?

ok. now i get an exacutable main/gnucap-ui (why ui?).
afaics, it works
$ chrpath main/gnucap-ui
main/gnucap-ui: 
RPATH=/home/felix/extern/gnucap-upstream/cmake_build/lib:/home/felix/extern/gnucap-upstream/cmake_build/apps
$ main/gnucap-ui 
Gnucap : The Gnu Circuit Analysis Package
Never trust any version less than 1.0
Copyright 1982-2013, Albert Davis
Gnucap comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome
to redistribute it under the terms of 
the GNU General Public License, version 3 or later.
See the file "COPYING" for details.
main version: 2013.04.23 RCS 26.138
core-lib version: 2013.04.23 RCS 26.138
> quit

then, i tried to install:
$ make install DESTDIR=/tmp/GC
[..]
$ find /tmp/GC
/tmp/GC
/tmp/GC/usr
/tmp/GC/usr/local
/tmp/GC/usr/local/bin
/tmp/GC/usr/local/bin/gnucap-modelgen
/tmp/GC/usr/local/bin/gnucap
/tmp/GC/usr/local/lib
/tmp/GC/usr/local/lib/x86_64-linux-gnu
/tmp/GC/usr/local/lib/x86_64-linux-gnu/libgnucap.so
/tmp/GC/usr/local/lib/x86_64-linux-gnu/libgnucap-default-plugins.so

the headers are missing. also, i'm pretty sure that
libgnucap-default-plugins.so should be a plugin and, as such, not be
exposed to global namespace. (unfortunately there is some trouble with
output code symbols involved, see the mailing list archive).

how can i customize the prefix?

and.. while we're at it:
$ readelf -d /tmp/GC/usr/local/lib/x86_64-linux-gnu/libgnucap.so |grep
SONAME 0x000000000000000e (SONAME)             Library soname: [libgnucap.so]
i think this is suboptimal, perhaps we should either not ship a shared
library, or add an interface version, to reduce confusion.

thanks
felix