[dpdk-dev] [PATCH] Fix linking errors when CONFIG_RTE_BUILD_SHARED_LIB is enabled

Sergio Gonzalez Monroy sergio.gonzalez.monroy at intel.com
Thu Oct 2 10:12:22 CEST 2014


On Thu, Oct 02, 2014 at 11:48:37AM +0900, Tetsuya Mukawa wrote:
> (2014/10/01 20:56), Thomas Monjalon wrote:
> > 2014-10-01 06:50, Neil Horman:
> >> On Wed, Oct 01, 2014 at 01:27:03PM +0900, mukawa at igel.co.jp wrote:
> >>> When CONFIG_RTE_BUILD_SHARED_LIB is enabled, linking errors occured
> >>> while compiling. It seems those errors are caused by wrong link order
> >>> of some libraries. The patch fixes it like following.
> >>>
> >>> 1. librte_eal
> >>> 2. librte_malloc
> >>> 3. librte_mempool
> >>> 4. librte_ring
> >>> 5. librte_pmd_bond
> >>> 6. librte_kvargs
> >>>
> >> I'm not sure why thats necesecary.  We add a --start-group/--end-group pair
> >> halfway through this makefile.  If we just encompassed the entire set of
> >> libraries in that group, order would be irrelevant.
> > I don't see any error.
> > Please Tetsuya, could you describe how you test and what is the error message?
> >
> > Thanks
> Thank you for testing.
> I have confirmed '--start-group/--end-groups' is specified while
> compiling, but I am still seeing the error.
> 
> Here is what I actually did.
> 
> ----------------------------------------------------------------------
> 
> << Show my environment >>
> $ uname -a
> Linux eris 3.13.0-29-generic #53-Ubuntu SMP Wed Jun 4 21:00:20 UTC 2014
> x86_64 x86_64 x86_64 GNU/Linux
> $ lsb_release -a
> No LSB modules are available.
> Distributor ID:    Ubuntu
> Description:    Ubuntu 14.04.1 LTS
> Release:    14.04
> Codename:    trusty
> $ gcc -v
> Using built-in specs.
> COLLECT_GCC=gcc
> COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
> Target: x86_64-linux-gnu
> Configured with: ../src/configure -v --with-pkgversion='Ubuntu
> 4.8.2-19ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs
> --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
> --program-suffix=-4.8 --enable-shared --enable-linker-build-id
> --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
> --with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib
> --enable-nls --with-sysroot=/ --enable-clocale=gnu
> --enable-libstdcxx-debug --enable-libstdcxx-time=yes
> --enable-gnu-unique-object --disable-libmudflap --enable-plugin
> --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk
> --enable-gtk-cairo
> --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre
> --enable-java-home
> --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64
> --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64
> --with-arch-directory=amd64
> --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc
> --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
> --with-multilib-list=m32,m64,mx32 --with-tune=generic
> --enable-checking=release --build=x86_64-linux-gnu
> --host=x86_64-linux-gnu --target=x86_64-linux-gnu
> Thread model: posix
> gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
> 
> << Compile DPDK >>
> $ git clone git://dpdk.org/dpdk
> $ cd dpdk
> $ vi config/common_linuxapp
> CONFIG_RTE_BUILD_SHARED_LIB=y
> $ T=x86_64-native-linuxapp-gcc make install V=1
> 
> .......
> 
> == Build app/test-acl
> gcc -Wp,-MD,./.main.o.d.tmp -m64 -pthread -fPIC  -march=native
> -DRTE_MACHINE_CPUFLAG_SSE -DRTE_MACHINE_CPUFLAG_SSE2
> -DRTE_MACHINE_CPUFLAG_SSE3 -DRTE_MACHINE_CPUFLAG_SSSE3
> -DRTE_MACHINE_CPUFLAG_SSE4_1 -DRTE_MACHINE_CPUFLAG_SSE4_2
> -DRTE_MACHINE_CPUFLAG_AES -DRTE_MACHINE_CPUFLAG_PCLMULQDQ
> -DRTE_MACHINE_CPUFLAG_AVX -DRTE_MACHINE_CPUFLAG_F16C
> -DRTE_COMPILE_TIME_CPUFLAGS=RTE_CPUFLAG_SSE,RTE_CPUFLAG_SSE2,RTE_CPUFLAG_SSE3,RTE_CPUFLAG_SSSE3,RTE_CPUFLAG_SSE4_1,RTE_CPUFLAG_SSE4_2,RTE_CPUFLAG_AES,RTE_CPUFLAG_PCLMULQDQ,RTE_CPUFLAG_AVX,RTE_CPUFLAG_F16C 
> -I/home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/include -include
> /home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/include/rte_config.h -W
> -Wall -Werror -Wstrict-prototypes -Wmissing-prototypes
> -Wmissing-declarations -Wold-style-definition -Wpointer-arith
> -Wcast-align -Wnested-externs -Wcast-qual -Wformat-nonliteral
> -Wformat-security -Wundef -Wwrite-strings   -o main.o -c
> /home/mukawa/tmp/dpdk/app/test-acl/main.c
> gcc -m64 -pthread -fPIC  -march=native -DRTE_MACHINE_CPUFLAG_SSE
> -DRTE_MACHINE_CPUFLAG_SSE2 -DRTE_MACHINE_CPUFLAG_SSE3
> -DRTE_MACHINE_CPUFLAG_SSSE3 -DRTE_MACHINE_CPUFLAG_SSE4_1
> -DRTE_MACHINE_CPUFLAG_SSE4_2 -DRTE_MACHINE_CPUFLAG_AES
> -DRTE_MACHINE_CPUFLAG_PCLMULQDQ -DRTE_MACHINE_CPUFLAG_AVX
> -DRTE_MACHINE_CPUFLAG_F16C
> -DRTE_COMPILE_TIME_CPUFLAGS=RTE_CPUFLAG_SSE,RTE_CPUFLAG_SSE2,RTE_CPUFLAG_SSE3,RTE_CPUFLAG_SSSE3,RTE_CPUFLAG_SSE4_1,RTE_CPUFLAG_SSE4_2,RTE_CPUFLAG_AES,RTE_CPUFLAG_PCLMULQDQ,RTE_CPUFLAG_AVX,RTE_CPUFLAG_F16C 
> -I/home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/include -include
> /home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/include/rte_config.h -W
> -Wall -Werror -Wstrict-prototypes -Wmissing-prototypes
> -Wmissing-declarations -Wold-style-definition -Wpointer-arith
> -Wcast-align -Wnested-externs -Wcast-qual -Wformat-nonliteral
> -Wformat-security -Wundef -Wwrite-strings  -Wl,-Map=testacl.map,--cref
> -o testacl main.o -Wl,-export-dynamic
> -L/home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/lib 
> -L/home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/lib
> -Wl,--whole-archive -Wl,-lrte_distributor -Wl,-lrte_kni
> -Wl,-lrte_pipeline -Wl,-lrte_table -Wl,-lrte_port -Wl,-lrte_timer
> -Wl,-lrte_hash -Wl,-lrte_lpm -Wl,-lrte_power -Wl,-lrte_acl
> -Wl,-lrte_meter -Wl,-lrte_sched -Wl,-lm -Wl,-lrt -Wl,--start-group
> -Wl,-lrte_kvargs -Wl,-lrte_mbuf -Wl,-lrte_ip_frag -Wl,-lethdev
> -Wl,-lrte_malloc -Wl,-lrte_mempool -Wl,-lrte_ring -Wl,-lrte_eal
> -Wl,-lrte_cmdline -Wl,-lrte_cfgfile -Wl,-lrte_pmd_bond -Wl,-lrt -Wl,-lm
> -Wl,-lgcc_s -Wl,-ldl -Wl,--end-group -Wl,--no-whole-archive
> /home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/lib/librte_eal.so:
> undefined reference to `rte_mempool_lookup'
> /home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/lib/librte_eal.so:
> undefined reference to `rte_mempool_create'
> 
> << Reproduce the issue with same options >>
> $ cd x86_64-native-linuxapp-gcc/build/app/test-acl/
> $ gcc -Wp,-MD,./.main.o.d.tmp -m64 -pthread -fPIC  -march=native
> -DRTE_MACHINE_CPUFLAG_SSE -DRTE_MACHINE_CPUFLAG_SSE2
> -DRTE_MACHINE_CPUFLAG_SSE3 -DRTE_MACHINE_CPUFLAG_SSSE3
> -DRTE_MACHINE_CPUFLAG_SSE4_1 -DRTE_MACHINE_CPUFLAG_SSE4_2
> -DRTE_MACHINE_CPUFLAG_AES -DRTE_MACHINE_CPUFLAG_PCLMULQDQ
> -DRTE_MACHINE_CPUFLAG_AVX -DRTE_MACHINE_CPUFLAG_F16C
> -DRTE_COMPILE_TIME_CPUFLAGS=RTE_CPUFLAG_SSE,RTE_CPUFLAG_SSE2,RTE_CPUFLAG_SSE3,RTE_CPUFLAG_SSSE3,RTE_CPUFLAG_SSE4_1,RTE_CPUFLAG_SSE4_2,RTE_CPUFLAG_AES,RTE_CPUFLAG_PCLMULQDQ,RTE_CPUFLAG_AVX,RTE_CPUFLAG_F16C 
> -I/home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/include -include
> /home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/include/rte_config.h -W
> -Wall -Werror -Wstrict-prototypes -Wmissing-prototypes
> -Wmissing-declarations -Wold-style-definition -Wpointer-arith
> -Wcast-align -Wnested-externs -Wcast-qual -Wformat-nonliteral
> -Wformat-security -Wundef -Wwrite-strings   -o main.o -c
> /home/mukawa/tmp/dpdk/app/test-acl/main.c
> mukawa at eris:~/tmp/dpdk/x86_64-native-linuxapp-gcc/build/app/test-acl$
> gcc -m64 -pthread -fPIC  -march=native -DRTE_MACHINE_CPUFLAG_SSE
> -DRTE_MACHINE_CPUFLAG_SSE2 -DRTE_MACHINE_CPUFLAG_SSE3
> -DRTE_MACHINE_CPUFLAG_SSSE3 -DRTE_MACHINE_CPUFLAG_SSE4_1
> -DRTE_MACHINE_CPUFLAG_SSE4_2 -DRTE_MACHINE_CPUFLAG_AES
> -DRTE_MACHINE_CPUFLAG_PCLMULQDQ -DRTE_MACHINE_CPUFLAG_AVX
> -DRTE_MACHINE_CPUFLAG_F16C
> -DRTE_COMPILE_TIME_CPUFLAGS=RTE_CPUFLAG_SSE,RTE_CPUFLAG_SSE2,RTE_CPUFLAG_SSE3,RTE_CPUFLAG_SSSE3,RTE_CPUFLAG_SSE4_1,RTE_CPUFLAG_SSE4_2,RTE_CPUFLAG_AES,RTE_CPUFLAG_PCLMULQDQ,RTE_CPUFLAG_AVX,RTE_CPUFLAG_F16C 
> -I/home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/include -include
> /home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/include/rte_config.h -W
> -Wall -Werror -Wstrict-prototypes -Wmissing-prototypes
> -Wmissing-declarations -Wold-style-definition -Wpointer-arith
> -Wcast-align -Wnested-externs -Wcast-qual -Wformat-nonliteral
> -Wformat-security -Wundef -Wwrite-strings  -Wl,-Map=testacl.map,--cref
> -o testacl main.o -Wl,-export-dynamic
> -L/home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/lib 
> -L/home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/lib
> -Wl,--whole-archive -Wl,-lrte_distributor -Wl,-lrte_kni
> -Wl,-lrte_pipeline -Wl,-lrte_table -Wl,-lrte_port -Wl,-lrte_timer
> -Wl,-lrte_hash -Wl,-lrte_lpm -Wl,-lrte_power -Wl,-lrte_acl
> -Wl,-lrte_meter -Wl,-lrte_sched -Wl,-lm -Wl,-lrt -Wl,--start-group
> -Wl,-lrte_kvargs -Wl,-lrte_mbuf -Wl,-lrte_ip_frag -Wl,-lethdev
> -Wl,-lrte_malloc -Wl,-lrte_mempool -Wl,-lrte_ring -Wl,-lrte_eal
> -Wl,-lrte_cmdline -Wl,-lrte_cfgfile -Wl,-lrte_pmd_bond -Wl,-lrt -Wl,-lm
> -Wl,-lgcc_s -Wl,-ldl -Wl,--end-group -Wl,--no-whole-archive
> /home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/lib/librte_eal.so:
> undefined reference to `rte_mempool_lookup'
> /home/mukawa/tmp/dpdk/x86_64-native-linuxapp-gcc/lib/librte_eal.so:
> undefined reference to `rte_mempool_create'
> collect2: error: ld returned 1 exit status
> 

Hi Tetsuya,

Would you mind posting the output of the last command adding the option '-v'?

Sergio


> ----------------------------------------------------------------------
> 
> I just enabled the following option, then compile DPDK.
> CONFIG_RTE_BUILD_SHARED_LIB
> Is this collect to compile PMDs as dynamic link libraries?
> 
> With the option, all libraries include are compiled as dynamic link library.
> Does "--start-group/--end-group" options work with dynamic link libraries?
> 
> Regards,
> Tetsuya
> 


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