---
name: "mpif77_lam"
section: "1"
platform: "linux"
package: "lam2-dev"
version: "6.3.2-3"
release: "Debian 2.2 (Potato)"
platforms: ["linux"]
url: "https://new.carta.tech/hf77"
---

# mpif77\_lam(1)

Compile LAM FORTRAN programs.

Part of [hf77(1)](/hf77/1.md).

## NAME

hf77, mpif77 - Compile LAM FORTRAN programs.

## SYNTAX

hf77 \[-showme\] ...

see [f77(1)](/f77/1.md) (or whatever your underlying FORTRAN compiler is) for all other options.

## DESCRIPTION

*hf77* is a convenience wrapper for the local native FORTRAN compiler. Translation of a LAM program requires the linkage of the LAM essential services libraries which may not reside in one of the standard search directories of [ld(1)](/ld/1.md). *hf77* passes its arguments along to the local native FORTRAN compiler along with the -L and -l options required by LAM/MPI programs.  This includes all necessary options for ROMIO and/or C++ bindings support (if ROMIO/C++ support was included when LAM was compiled).

*mpif77* is now the same as  *hf77.* See the NOTES section, below.

By default, *hf77* uses the FORTRAN compiler that was selected when LAM was configured (with the --with-fc flag to ./configure) as the local native FORTRAN compiler, but this can be overridden by the LAMHF77 environment variable.

## OPTIONS

- \-showme

  Does not invoke the underlying FORTRAN compiler.  Instead, it shows the command line that would be executed to compile the FORTRAN program.

## NOTES

Previous versions of  *hf77* did not automatically link in the MPI library.  Starting with LAM version 6.3, since *hf77* has become the de facto LAM FORTRAN compiler, the *-lmpi* option is now automatically passed to the underlying compiler when linking LAM/MPI programs.

Previous versions of LAM included the  *mpif77* wrapper script to automatically pass *-lmpi* to  *hf77.* This script is now obsolete since  *hf77* now includes *-lmpi* automatically.   *mpif77* is now a symbolic link to *hf77* to ensure backward compatibility.

## SEE ALSO

[f77(1)](/f77/1.md), [ld(1)](/ld/1.md), lam-helpfile(1)