Shouldn't the ebuild create a file in /etc/env.d/ containing LDPATH=/usr/lib/graphviz so that the applications that use the shared libraries in this directory can find it? (In my case, I had the problem after installing (myself, it is not in the portage tree) the Bioconductor Rgraphviz package, for the R statistical environment).
Erm, no. The installed pkgconfig files take care of this. You need to fix your app to use them. See the example: libagraph.pc <snip> prefix=/usr exec_prefix=${prefix} libdir=${exec_prefix}/lib/graphviz includedir=${prefix}/include/graphviz Name: libagraph Description: Graph library (file i/o, dot language parsing, graph, subgraph, node, edge, attribute, data structure manipulation) Version: 1.16 Libs: -L${libdir} -lagraph -lcdt Cflags: -I${includedir} </snip>
I might not have given enough details. (1) I would agree with you if the problem was that the computer was not finding the *.a or *.h files while _compiling_ an application. This is not the case: the application does compiles. The problem is that is does not run. If you need mode details, the application in question was compiled as follows. wget http://www.bioconductor.org/packages/bioc/1.7/src/contrib/Source/Rgraphviz_1.8.0.tar.gz R CMD INSTALL Rgraphviz_1.8.0.tar.gz # This compiles and installs the Rgraphviz package # It runs things like this (it infers the location of # the graphviz library by running dotneato-config) # gcc -I/usr/local/lib/R/include -I/usr/include/graphviz -DGRAPHVIZGT_1_16 -I/usr/local/include -fPIC -g -O2 -c Rgraphviz.c -o Rgraphviz.o # gcc -I/usr/local/lib/R/include -I/usr/include/graphviz -DGRAPHVIZGT_1_16 -I/usr/local/include -fPIC -g -O2 -c RgraphvizInit.c -o RgraphvizInit.o # gcc -shared -L/usr/local/lib -o Rgraphviz.so Rgraphviz.o RgraphvizInit.o -L/usr/lib/graphviz -ldotneato -lm -L/usr/local/lib/R/lib -lR # It actually creates a shared library that will # dynamically loaded, but that shared library uses # the libdotneato.so shared library (provided by # graphviz): it has to be found at _run time_. And when I try to run it: zoonek@gentoo /tmp $ R R : Copyright 2005, The R Foundation for Statistical Computing Version 2.2.1 (2005-12-20 r36812) ISBN 3-900051-07-0 R is free software and comes with ABSOLUTELY NO WARRANTY. You are welcome to redistribute it under certain conditions. Type 'license()' or 'licence()' for distribution details. > library(Rgraphviz) Loading required package: graph Loading required package: cluster Loading required package: Ruuid Error in dyn.load(x, as.logical(local), as.logical(now)) : unable to load shared library '/usr/local/lib/R/library/Rgraphviz/libs/Rgraphviz.so': libdotneato.so.0: cannot open shared object file: No such file or directory Error: .onLoad failed in 'loadNamespace' for 'Rgraphviz' Error: package/namespace load failed for 'Rgraphviz' Here, Rgraphviz.so if the shared library that uses graphiviz, that was successfully compiled, but that cannot be used unless the computer knows where to find libdotneato.so... (2) If I look at other packages that can be used as a shared library, most seem to explicitely add the directory containing the shared libraries -- otherwise, third party applications can be compiled, but not used... Examples (there are many, many others): $ locate .ebuild | xargs grep LDPATH /var/db/pkg/x11-libs/openmotif-2.2.3-r9/openmotif-2.2.3-r9.ebuild: echo "LDPATH=/usr/lib/openmotif-2.2" > ${D}/etc/env.d/15openmotif-2.2 /usr/portage/sci-mathematics/octave/octave-2.1.57-r1.ebuild: echo "LDPATH=/usr/lib/octave-${PV}" > ${D}/etc/env.d/99octave ... I still think that it should be the same with graphviz. Am I really wrong? If so, why are other applications ask their directories to be added to /etc/ld.so.conf? And how other programs, willing to use such a shared library, be compiled: should the path to the shared libraries they use be hard-coded? Thanks, -- Vincent
