Hi Andrés, * Andrés Moré wrote on Wed, Sep 14, 2005 at 02:19:58PM CEST: > > I'm using autoconf/automake/libtool to manage a command line tool that > has a shared library and a linux kernel module. This is most likely a Libtool problem, and would as such fit better on the Libtool mailing list. But it's not easy to know before. :) > In order to install the module, I have to use DATA definitions and a > separate Makefile. Anyway, my main problem its that a need to cross > compile this tool to ARM, and I have troubles when linking the shared > objects. > ./configure CFLAGS="-mbig-endian -txscale"--host=arm-wrs-linux-gnueabi (I assume the missing space before `--host' is a typo in the mail rather than in your setup.) > And the library Makefile.am is: > > lib_LTLIBRARIES = libxld_lib.la > libxld_lib_la_SOURCES = xld_lib.c > > So, after configuring, when I type "make": > > arm-linux-gnueabi-gcc -shared .libs/xld_lib.o -mbig-endian > -Wl,-soname -Wl,libxld_lib.so.0 -o .libs/libxld_lib.so.0.0.0 > /home/linux/toolchain/xscale_be/bin/../lib/gcc/arm-linux-gnueabi/3.4.4/../../../../arm-linux-gnueabi/lib/libgcc_s.so: > could not read symbols: File in wrong format Libtool removes some flags from the link line it doesn't understand (to some extent, it has to). You are using a recent Libtool version, by the way (1.5.20 is current)? You may be able to work around this by using LDFLAGS=-Wl,-txscale either during the configure or the make step. Please also note that you configured with --host=arm-wrs-linux-gnueabi but you should be using --host=arm-linux-gnueabi according to the name of the cross-compiler: > I'm able of compiling successfully without autoconf: > > arm-linux-gnueabi-gcc -mbig-endian -txscale -Wall -O -ggdb -c xld_lib.c > arm-linux-gnueabi-gcc -mbig-endian -txscale -fPIC -shared xld_lib.o -o > libxld_lib.so You should be adding `-fPIC' during compilation rather than during linking. > So, I think that maybe the tool is missing some flags (-m flag) at > link time when cross compiling shared objects. Well, I can only see the -txflags missing. Maybe it needs -fPIC as well during linking (that would really surprise me, though, I only know non-GCC compilers that need this)? I guess we should add all of -t4, -t4be, -t4t, -t4tbe, -t5, -t5be, -t5t, -t5tbe, -txscale, -txscalebe to the list of allowed flags for linking, to libtool? Can somebody confirm this? > The workaround that I have at the moment is using static libraries > instead of shared libraries, but I think its not _elegant_. Nope, I agree. :) Cheers, Ralf _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
