git: 198de88111 - main - [phb][Uses]: Add missing Uses=mpi

The branch main has been updated by fernape:

URL: https://cgit.FreeBSD.org/doc/commit/?id=198de88111efbcf4a3454521971065b18509008e

commit 198de88111efbcf4a3454521971065b18509008e
Author:     Fernando Apesteguía <fernape@FreeBSD.org>
AuthorDate: 2025-02-17 19:25:17 +0000
Commit:     Fernando Apesteguía <fernape@FreeBSD.org>
CommitDate: 2025-02-21 16:23:42 +0000

    [phb][Uses]: Add missing Uses=mpi
    
    Approved by:            thierry@ (maintainer)
    Differential Revision:  https://reviews.freebsd.org/D49036
---
 .../en/books/porters-handbook/uses/_index.adoc     | 43 ++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/documentation/content/en/books/porters-handbook/uses/_index.adoc b/documentation/content/en/books/porters-handbook/uses/_index.adoc
index 61a2de96b4..2e4c2b13e4 100644
--- a/documentation/content/en/books/porters-handbook/uses/_index.adoc
+++ b/documentation/content/en/books/porters-handbook/uses/_index.adoc
@@ -1517,6 +1517,49 @@ package:x11-toolkits/lesstif[] as dependency instead of package:x11-toolkits/ope
 Similarly setting `WANT_OPEN_MOTIF_DEVEL` in [.filename]#make.conf# will add a
 dependency on package:x11-toolkits/open-motif-devel[]
 
+[[uses-mpi]]
+== `mpi`
+
+Possible arguments: `mpich` (default), `openmpi`
+
+Provide support for ports depending on `MPI`.
+
+If the `mpich` argument is provided a dependency on package:net/mpich[] is added
+to the port.
+
+If the `openmpi` argument is provided a dependency on package:net/openmpi[] is
+added to the port.
+
+The ports framework provides the following variables that can be read by the port:
+
+`MPI_LIBS`::
+Libraries needed to link programs using `MPI`.
+
+`MPI_CFLAGS`::
+Compiler flags necessary to build programs using `MPI`.
+
+`MPICC`::
+Location of the `mpicc` executable. Default: [.filename]#${MPI_HOME}/bin/mpicc#.
+
+`MPICXX`::
+Location of the `mpicxx` executable. Default: [.filename]#${MPI_HOME}/bin/mpicxx#.
+
+`MPIF90`::
+Location of the `mpif90` executable. Default: [.filename]#${MPI_HOME}/bin/mpif90#.
+
+`MPIFC`::
+Same as above.
+
+`MPI_HOME`::
+Installation directory of `MPI`. Defaults to `${LOCALBASE}` for `MPICH`.
+
+`MPIEXEC`::
+Location of the `mpiexec` executable. Default: [.filename]#${MPI_HOME}/bin/mpiexec#.
+
+`MPIRUN`::
+Location of the `mpirun` executable. Default: [.filename]#${MPI_HOME}/bin/mpirun#.
+
+
 [[uses-ncurses]]
 == `ncurses`