---
name: "mpiCC.mpich"
section: "1"
platform: "linux"
package: "mpich"
version: "1.2.1-16"
release: "Debian 3.0 (Woody)"
platforms: ["linux"]
url: "https://new.carta.tech/mpiCC.mpich"
---

# mpiCC.mpich(1)

Compiles and links MPI programs written in C++

## NAME

mpiCC -  Compiles and links MPI programs written in C++

## DESCRIPTION

This command can be used to compile and link MPI programs written in C++.  It provides the options and any special libraries that are needed to compile and link MPI programs.

It is important to use this command (or a  *Makefile* processed with *mpireconfig* ) particularly when linking programs, as it provides the necessary libraries.  It can also simplify the use of the MPE profiling libraries, through the use of the  *-mpilog* ,  *-mpitrace* , and  *-mpianim* commands.

mpiCC cannot be used to compile C programs.  Use mpicc for C programs.

## COMMAND LINE ARGUMENTS

- **-mpilog**

  \- Build version that generate MPE log files

- **-mpitrace**

  \- Build version that generates traces

- **-mpianim**

  \- Build version that generates real-time animation

- **-show**

  \- Show the commands that would be used without runnning them

- **-help**

  \- Give short help

- **-echo**

  \- Show exactly what this program is doing. This option should normally not be used.

- **others**

  \- are passed to the compiler or linker.  For example,  *-c* causes files to be compiled,  *-g* selects compilation with debugging on most systems, and  *-o name* causes linking with the output executable given the name  *name* .

## ENVIRONMENT VARIABLES

The environment variables  *MPICH\_CCC* and  *MPICH\_CCLINKER* may be used to select different C++ compiler and linker.  Note that since MPICH is built with a particular C++ and C compiler, change the compilers used can cause problems.  Use this only if you could intermix code compiled with the different compilers.

## EXAMPLES

To compile a single file  *foo.c* , use

```
mpicc -c foo.c
```

To link the output and make an executable, use

```
mpicc -o foo foo.o
```

Combining compilation and linking in a single command

```
mpicc -o foo foo.c
```

is a convenient way to build simple programs.

## SEE ALSO

mpif77, mpireconfig\

## LOCATION

/home/MPI/mansrc/commands