6. C++链接xMath出错

C++链接xMath出错

  • X

    老师好：
    我已经看到了有关于xMath出错的讨论。

    我也想用链接xMath和我的C++程序，但是使用上述链接的办法不能正常使用。

    尝试1

    命令

    sw5cc -hybrid -o test_xMath main.o cg.o spmv.o SunwayAthread.o -L ${xMath_path} -lxMath -lstdc++

    报错

    /usr/sw-mpp/swcc/sw5gcc-binary/lib/libxMath.a(dcg_check.o): In function `dcg_check':/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:18: undefined reference to `_OPEN'
:/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:18: undefined reference to `_OPEN'
:/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:37: undefined reference to `_FWF'
:/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:37: undefined reference to `_FWF'
:/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:40: undefined reference to `_FWF'
:/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:40: undefined reference to `_FWF'
:/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:41: undefined reference to `_FWF'
/usr/sw-mpp/swcc/sw5gcc-binary/lib/libxMath.a(dcg_check.o):/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:41: more undefined references to `_FWF' follow
collect2: ld returned 1 exit status

    尝试2

    命令

    sw5cc -hybrid -o test_xMath main.o cg.o spmv.o SunwayAthread.o -L ${xMath_path} -lxMath -lstdc++ -lffio -lfortran

    报错

    /usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `findmatch': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `findmatch': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `__OPN': undefined reference to `__io_byteswap'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `__OPN': undefined reference to `__io_byteswap'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): more undefined references to `_unpack' follow
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(ferror.o): In function `_ferr': undefined reference to `_lmessage'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(ferror.o): In function `_ferr': undefined reference to `_lmessage'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(getdcparam.o): In function `_get_dc_param': undefined reference to `__fndc_ncfunc'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(getdcparam.o): In function `_get_dc_param': undefined reference to `__fndc_f77sz'
...

    尝试3

    命令

    sw5CC -hybrid -o test_xMath main.o cg.o spmv.o SunwayAthread.o -L ${xMath_path} -lxMath -lstdc++ -lffio -lfortran

    报错

    CC ERROR: cannot exec /usr/sw-mpp/swcc/sw5gcc-binary/bin/sw5g++: No such file or directory

    尝试4

    命令：

    mpiCC -hybrid -o test_xMath main.o cg.o spmv.o SunwayAthread.o -L ${xMath_path} -lxMath -lstdc++ -lffio -lfortran

    报错：

    /usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `findmatch': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `findmatch': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `__OPN': undefined reference to `__io_byteswap'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `__OPN': undefined reference to `__io_byteswap'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
...

    请问老师有什么好的建议嘛？谢谢！

    0
  • X

    之前代码中，我指定了xMath的路径寻找路径，从而导致了上述错误。正确的使用xMath应该让系统自己寻找合适的xMath库。

    经过超算中心老师的指导，我把提交程序修改为

    # prepare
clear
rm *.o
rm test_xMath

# compile master core program
sw5cc -host -c cg.c
sw5cc -host -c spmv.c
sw5cc -host -c cg.c
sw5cc -host -c SunwayAthread.c
sw5CC -host -c main.cpp

# link
# xMath path should not be assigned, should automatically find by system
mpic++ -hybrid -o test_xMath main.o cg.o spmv.o SunwayAthread.o -lxMath_manycore -lfortran -lffio

# submit
bsub -I -b -N 1 -q q_sw_expr -cgsp 64 ./test_xMath

    就可以解决问题。

    1
  • 搪

    请问一下代码中是怎么调用xMath的呢？使用了头文件或者extern的么，我一直遇到undefined reference to `dgemm_(char*, char*, int*, int*, int*, double*, double*, int*, double*, int*, double*, double*, int*)'的问题，所以想请教一下

    0
  • X

    你这个很可能是因为在链接的时候没有加上xMath库？

    0

  • 加上-lfortran -lffio

    0
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