3.3.3. Makefile configuration¶
Several of the make options are chosen based on the value of the environment
parameter $HOST
. To influence those settings, create a file
config/hosts/$HOST
, and put the options you prefer there. A typical
content on a cluster host would be:
COMPILER=ifort
You may choose to commit the file to the repository, but make sure to avoid
collisions with existing files. Having the $HOST
file in the repository
makes sense on a cluster, to configure common settings used by several people,
while committing a laptop config/hosts/$HOST
to the repository is usually
pointless.
To implement particular host-dependent options or option bundles for a compiler, create for example these files:
config/compiler/gfortran/$HOST/Makefile
config/compiler/gfortran/$HOST/optimized.mkf
config/compiler/gfortran/$HOST/debug.mkf
config/compiler/gfortran/$HOST/full_debug.mkf
config/compiler/gfortran/$HOST/personal.mkf
Note that these files only need to contain the lines that differ from the
corresponding lines in the config/compiler/gfortran/
files.
See also the note about makes showinclude ...
on the page about `make targets`_