共享对象库和MPI [英] Shared Object Library and MPI

问题描述

我正在一个使用MPI创建并行进程的项目中，每个进程都使用dlopen()加载作为共享对象库构建的模块.我正在编写的模块之一使用第三方库(HDF).当我运行程序时，dlopen会引发错误: dlopen失败:/home/jwomble/QTProjects/Sur​​rogateModule/libsurrogate.so:未定义符号:H5T_NATIVE_INT32_g

I am working on a project that uses MPI to create parallel processes, each process uses dlopen() to load a module that's been build as a shared object library. One of the modules that I'm writing uses a 3rd party library (HDF). When I run the program, dlopen throws an error: dlopen failed: /home/jwomble/QTProjects/SurrogateModule/libsurrogate.so: undefined symbol: H5T_NATIVE_INT32_g

未定义的符号在HDF库中.如何从HDF库加载符号?

The undefined symbol is in the HDF library. How do I load the symbols from the HDF library?

当前，我的make文件如下所示:

Currently, my make file looks like this:

CC        = mpicc

INCDIR    = -I /home/jwomble/QTProjects/STARExecutive/src/star_comm \
        -I /home/jwomble/QTProjects/STARExecutive/src/executive \
        -I /home/jwomble/QTProjects/Star \
    -I ./phdf/include

CFLAGS    = -Wall -rdynamic -g -fPIC $(INCDIR)

all: libsurrogate.so

libsurrogate.so:    SurrogateModule.o
    $(CC) -shared --export-dynamic -o $@ $<

SurrogateModule.o:  SurrogateModule.c
    $(CC) $(CFLAGS) -lhdf5 -c $<

谢谢！

推荐答案

您实际上并没有针对hdf5进行链接.与-c一起使用时，-l标志无效.

You are not actually linking against hdf5. The -l Flag is useless when used together with -c.

将-lhdf5移至libsurrogate.so的链接应该可以解决此问题.

Moving -lhdf5 upt to the linking of libsurrogate.so should fix the problem.

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