Am Sun, 30 Apr 2006 11:52:16 -0700 schrieb Russ Allbery: > Andreas Volz <[EMAIL PROTECTED]> writes: > > > I build my library with GNU autotools and link to it with the > > pkg-config --uninstalled option without installing it. In this case > > a la-file (libmhgui.la) is created. I've some problems to > > understand how libtool generated the dependency_libs field. In my > > package is a --with-x/--without-x option from AC_PATH_X. But the > > la-file has the X libraries in its dependency_libs field. So how > > does libtool generate this field? > > Well, you say that the correct field is: > > > # Libraries that this one depends upon. > > dependency_libs=' > > /home/andreas/src/MakeHuman/cvs/animorph/src/libanimorph.la > > -l glut -lGLU -lGL -lpng > > I expect that one of glut, GLU, and GL depend on the X libraries, and > hence when libtool resolves transitive dependencies through the .la > files, it pulls in the other libraries. > > This is one of the problems with .la files currently. It doesn't > have the correct semantics to distinguish between static builds (and > builds on platforms with deficient shared library handling) where all > transitive dependencies have to be pulled into the link line and > shared builds on modern platforms where transitive dependencies do > not have to be pulled in and in fact generally *shouldn't* since they > make library migrations harder. > > pkg-config does have this logic and some packages have started not > installing libtool .la files and recommending that people just use > pkg-config to get the right link lines to avoid this. That being > said, the addition of extra dependencies is generally only a problem > if you're building OS packages and have to be careful about adding > too many dependencies. If you're just building software for local > use, it doesn't really matter.
Yes, but in this special case it's important. I use a win32 cross compiler environment and this put me into trouble by linking to X. Now I found out that the X linking is transitive through the freeglut library. # The name of the static archive. old_library='libfreeglut.a' # Libraries that this one depends upon. dependency_libs=' -L/opt/xmingw/i386-mingw32msvc/lib -lm -lGL -lGLU -lXext -lX11' ... I compiled installed only the static .a library. I compiled it with --without-x and it works. So is the only solution to not install the libfreeglut.la? I don't understand from where libtool gets the -lXext -lX11 flag. There're nearly no .la files in my cross compilers library dir. Perhaps my cross compiler enviroment isn't sane. If I don't use --without-x my hosts X installation is found: ... checking for X... libraries /usr/X11R6/lib, headers /usr/X11R6/include ... I assume this shouldn't happen. May this be a problem. Any ideas how to solve this? regards Andreas _______________________________________________ http://lists.gnu.org/mailman/listinfo/libtool
