mpicc在编译时没有警告 [英] mpicc with no warning when compiling

问题描述

我想知道使用什么标志，以避免在使用mpicc编译C / C ++并行时出现警告消息。更具体地说，我不想让我的消息屏幕引用未使用的变量，例如。警告：未使用的变量

I would like to know what flag to use in order to avoid warning messages that appear when compiling a C/C++ parallel using mpicc. More specifically, I prefer not to have my screen of messages referring to unused variables,e.g. warning: unused variable

感谢

推荐答案

Mark， mpicc 只是一个真正的编译器工具链的包装器。有一个几乎标准的选项（几乎）所有包装器理解： -showme 。它显示了什么标志传递给编译器，例如：

As pointed by High Performance Mark, mpicc is simply a wrapper around the real compiler toolchain. There is an almost standard option that (almost) all wrappers understand: -showme. It shows you what flags exactly get passed on to the compiler, e.g.:

$ mpicc -showme
icc <lots of preprocessor flags> -fexceptions -pthread \
    <lots of linker flags> -lmpi -losmcomp -lrdmacm -libverbs -lrt \
    -lnsl -lutil -lpsm_infinipath -lbat -llsf -ldl -lm -lnuma

检查这些选项，请查看您的编译器手册，了解如何抑制警告。

Examine these options, consult your compiler's manual and find out how to suppress the warnings.

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