[dpdk-users] GCC compile errors from 'rte_memcpy.h' in stand-alone environment

[Pavey, Nicholas]

Hi Folks,

I’m developing a benchmarking environment for some code that I’ll eventually link with the DPDK. However, at the moment it’s not integrated with the DPDK because it makes testing and debug easier.

I’d like to use the ‘rte_memcpy’ function, since it’s a good implementation using non-temporal instructions. The DPDK version is a lot better than something I hack together ;-)

When I compile the code I’m getting a lot of errors along the lines of this:

c_src/rte_memcpy.h:870:2: error: incompatible type for argument 2 of '_mm_storeu_si128'
In file included from c_src/main.h:23:0,
                 from c_src/main.c:1:
/usr/lib/gcc/x86_64-linux-gnu/4.8/include/emmintrin.h:700:1: note: expected '__m128i' but argument is of type 'int'
 _mm_storeu_si128 (__m128i *__P, __m128i __B)
 ^
In file included from c_src/main.h:33:0,
                 from c_src/main.c:1:
c_src/rte_memcpy.h:870:2: error: incompatible type for argument 2 of '_mm_storeu_si128'
  MOVEUNALIGNED_LEFT47(dst, src, n, srcofs);
  ^
In file included from c_src/main.h:23:0,
                 from c_src/main.c:1:
/usr/lib/gcc/x86_64-linux-gnu/4.8/include/emmintrin.h:700:1: note: expected '__m128i' but argument is of type 'int'
 _mm_storeu_si128 (__m128i *__P, __m128i __B)
 ^
In file included from c_src/main.h:33:0,
                 from c_src/main.c:1:
c_src/rte_memcpy.h:870:2: error: incompatible type for argument 2 of '_mm_storeu_si128'
  MOVEUNALIGNED_LEFT47(dst, src, n, srcofs);
  ^
In file included from c_src/main.h:23:0,
                 from c_src/main.c:1:
/usr/lib/gcc/x86_64-linux-gnu/4.8/include/emmintrin.h:700:1: note: expected '__m128i' but argument is of type 'int'
 _mm_storeu_si128 (__m128i *__P, __m128i __B)

(There are an awful lot of these…)


The compile command line is:

  gcc -O3 --no-omit-frame-pointer -Wall -m64 -std=c99 -g –I/include/path/to/libhugetlbfs –I/include/path/to/libnuma -Ic_src -Icpp_src -c c_src/main.c -o c_objs/main.o

The compiler version is:

  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 4.8.4-2ubuntu1~14.04.1' --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 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.1) 

OS distribution : Ubuntu 14.04
Kernel version : 3.13.0-85-generic

Processor type : Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
Processor flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms


Can anyone suggest what I can do to make ‘rte_memcpy’ compile correctly outside of the complete build environment?

Thanks,


Nick