OK, yeah I had mistakenly put --ldflags in the xeno-config line for CFLAGS = This was also problem: LDLIBS= $(shell $(XENOCONFIG) --skin=native --ldflags) \ $(shell $(XENOCONFIG) --skin=rtdm --ldflags) \ $(shell $(XENOCONFIG) --skin=posix --ldflags) That used to work in Xenomai 2.6 but not in Xenomai 3.1. All I needed was LDLIBS= $(shell $(XENOCONFIG) --skin=alchemy --ldflags)
My larger (30K lines) app compiles successfully now. Thanks. -C Smith On Wed, Aug 11, 2021 at 11:04 PM Jan Kiszka <jan.kis...@siemens.com> wrote: > On 12.08.21 07:50, C Smith wrote: > > Hi Jan,Thanks for your prompt reply. I reduced my very large app to > > about 200 lines, it only starts one periodic process. but I still get > > this error during linkage: > > > > /usr/xenomai/lib/xenomai/bootstrap.o: In function `xenomai_main': > > /usr/src/xenomai-3.1/lib/boilerplate/init/bootstrap.c:94: multiple > > definition of `xenomai_main' > > > /usr/xenomai/lib/xenomai/bootstrap.o:/usr/src/xenomai-3.1/lib/boilerplate/init/bootstrap.c:94: > > first defined here > > /usr/xenomai/lib/xenomai/bootstrap.o:(.rodata+0x0): multiple definition > > of `xenomai_auto_bootstrap' > > /usr/xenomai/lib/xenomai/bootstrap.o:(.rodata+0x0): first defined here > > /usr/xenomai/lib/xenomai/bootstrap.o: In function `xenomai_main': > > /usr/src/xenomai-3.1/lib/boilerplate/init/bootstrap.c:94: multiple > > definition of `xenomai_main' > > > /usr/xenomai/lib/xenomai/bootstrap.o:/usr/src/xenomai-3.1/lib/boilerplate/init/bootstrap.c:94: > > first defined here > > /usr/xenomai/lib/xenomai/bootstrap.o:(.rodata+0x0): multiple definition > > of `xenomai_auto_bootstrap' > > /usr/xenomai/lib/xenomai/bootstrap.o:(.rodata+0x0): first defined here > > /usr/xenomai/lib/xenomai/bootstrap.o: In function `xenomai_main': > > /usr/src/xenomai-3.1/lib/boilerplate/init/bootstrap.c:94: multiple > > definition of `xenomai_main' > > > /usr/xenomai/lib/xenomai/bootstrap.o:/usr/src/xenomai-3.1/lib/boilerplate/init/bootstrap.c:94: > > first defined here > > /usr/xenomai/lib/xenomai/bootstrap.o:(.rodata+0x0): multiple definition > > of `xenomai_auto_bootstrap' > > /usr/xenomai/lib/xenomai/bootstrap.o:(.rodata+0x0): first defined here > > collect2: error: ld returned 1 exit status > > make[1]: *** [<builtin>: myapp] Error 1 > > > > I had used your advice to get the compiler args in my Makefile with: > > /usr/xenomai/bin/xeno-config --skin=native --cflags --ldflags > > The resulting command line is: > > > > gcc -g3 -m32 -I/usr/xenomai/include/trank -D__XENO_COMPAT__ > > -I/usr/xenomai/include/cobalt > > -I/usr/xenomai/include -m32 -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE > > -D_REENTRANT -fasynchronous-unwind-tables > > -D__COBALT__ -I/usr/xenomai/include/alchemy -I/usr/xenomai/include/rtdm > > -Wl,--no-as-needed -ltrank > > -Wl,@/usr/xenomai/lib/modechk.wrappers -lalchemy -lcopperplate > > /usr/xenomai/lib/xenomai/bootstrap.o > > -Wl,--wrap=main -Wl,--dynamic-list=/usr/xenomai/lib/dynlist.ld > > -L/usr/xenomai/lib -lcobalt -lmodechk > > -lpthread -lrt -m32 -lfuse -pthread -I/usr/include/libxml2 -I"SOEM/" > > -I"SOEM/osal" -I"SOEM/oshw/linux" > > -I"SOEM/soem" -I"../include/nanopb" -Xlinker -rpath -Xlinker > > /usr/xenomai/lib myapp.c ../include/myapp.h > > ../include/dia_dev_myapp.h ../include/crc_table.h ../include/dacdefs.h > > ../include/version.h > > ../include/canopen_drives.h ../include/adcdefs.h > > ../include/myapp_version.h ../include/canodefs.h > > ../include/preproc_myapp.h ../include/myapp_mem_manager_data.h > > ../include/comm_dta_myapp.h ../include/comproto.h > > ../modules/rtdinsync.h quad.o dac.o adc.o SOEM/lib/linux/liboshw.a > > SOEM/lib/linux/libosal.a SOEM/lib/linux/libsoem.a > > ../include/nanopb/nanopb.a -Wl,--no-as-needed -ltrank > > -Wl,@/usr/xenomai/lib/modechk.wrappers -lalchemy -lcopperplate > > /usr/xenomai/lib/xenomai/bootstrap.o -Wl,--wrap=main > > -Wl,--dynamic-list=/usr/xenomai/lib/dynlist.ld > > -L/usr/xenomai/lib -lcobalt -lmodechk -lpthread -lrt -m32 -lfuse > > -pthread -Wl,--no-as-needed > > -Wl,@/usr/xenomai/lib/cobalt.wrappers > -Wl,@/usr/xenomai/lib/modechk.wrappers > > /usr/xenomai/lib/xenomai/bootstrap.o -Wl,--wrap=main > > -Wl,--dynamic-list=/usr/xenomai/lib/dynlist.ld > > -L/usr/xenomai/lib -lcobalt -lmodechk -lpthread -lrt -m32 -lfuse > > -pthread -Wl,--no-as-needed > > -Wl,@/usr/xenomai/lib/cobalt.wrappers > -Wl,@/usr/xenomai/lib/modechk.wrappers > > /usr/xenomai/lib/xenomai/bootstrap.o -Wl,--wrap=main > > -Wl,--dynamic-list=/usr/xenomai/lib/dynlist.ld > > -L/usr/xenomai/lib -lcobalt -lmodechk -lpthread -lrt -m32 -lfuse > > -pthread -lxml2 -lz -llzma -lm > > -ldl -L"SOEM/lib/linux" -Wl,--start-group -loshw -losal -lsoem > > -Wl,--end-group -lm -o myapp > > > > What is going wrong with the linkage? Thanks, C Smith > > > > Something is broken in your makefile. If you look at the end of the > resulting gcc call above, you see e.g. bootstrap.o being listed multiple > times (which explains the error, obviously). This is not coming from > xeno-config. So check your local setup, or just do > > gcc $(xeno-config ...) -o my-app my-app.c -I my-includes > > Jan > > -- > Siemens AG, T RDA IOT > Corporate Competence Center Embedded Linux >
