On 07/19/2012 07:18 PM, Danilo De Lorenzo wrote: > I'm getting this error when compiling the examples in the ipc folder > > gcc -I/usr/xenomai/include -D_GNU_SOURCE -D_REENTRANT -Wall > -Werror-implicit-function- > declaration -pipe -D__XENO__ -I/usr/xenomai/include/posix > -Wl,@/usr/xenomai/lib/posix.wrappers -L/usr/xenomai/lib -lpthread_rt > -lxenomai -lpthread -lrt -lrtdm -Xlinker -rpath -Xlinker > /usr/xenomai/lib xddp-echo.c -o xddp-echo > > /usr/bin/ld: /tmp/cc4VCXFp.o: undefined reference to symbol > 'pthread_sigmask@@GLIBC_2.2.5' > /usr/bin/ld: note: 'pthread_sigmask@@GLIBC_2.2.5' is defined in DSO > /lib/x86_64-linux-gnu/libpthread.so.0 so try adding it to the linker > command line > /lib/x86_64-linux-gnu/libpthread.so.0: could not read symbols: Invalid > operation > collect2: ld returned 1 exit status > make: *** [xddp-echo] Error 1 > > Is this a xenomai bug or glibc library bug?
Linker wants to see references first, for pulling symbols. Does this help? diff --git a/examples/rtdm/profiles/ipc/Makefile b/examples/rtdm/profiles/ipc/Makefile index 15da135..4ea38f0 100644 --- a/examples/rtdm/profiles/ipc/Makefile +++ b/examples/rtdm/profiles/ipc/Makefile @@ -39,6 +39,9 @@ CFLAGS=$(shell $(XENOCONFIG) --skin=posix --cflags) $(MY_CFLAGS) LDFLAGS=$(shell $(XENOCONFIG) --skin=posix --ldflags) $(MY_LDFLAGS) -lrtdm +%: %.c + $(CC) -o $@ $< $(CFLAGS) $(LDFLAGS) + # Add the Xenomai libdir to the runtime library search path for the # binary, to make life easier for beginners if Xenomai's libs are not # in any default search path. > > Thanks > > Danilo > _______________________________________________ > Xenomai mailing list > Xenomai@xenomai.org > http://www.xenomai.org/mailman/listinfo/xenomai > -- Philippe. _______________________________________________ Xenomai mailing list Xenomai@xenomai.org http://www.xenomai.org/mailman/listinfo/xenomai
