If your port needs to build slightly different versions of
packages by having a variable (for instance, resolution, or
paper size) take different values, create one subdirectory per
package to make it easier for users to see what to do, but try
to share as many files as possible between ports. Typically you
only need a very short Makefile
in all but
one of the directories if you use variables cleverly. In the
sole Makefile
, you can use
MASTERDIR
to specify the directory where the
rest of the files are. Also, use a variable as part of PKGNAMESUFFIX
so the packages will have different names.
This will be best demonstrated by an example. This is part
of japanese/xdvi300/Makefile
;
PORTNAME= xdvi PORTVERSION= 17 PKGNAMEPREFIX= ja- PKGNAMESUFFIX= ${RESOLUTION} : # default RESOLUTION?= 300 .if ${RESOLUTION} != 118 && ${RESOLUTION} != 240 && \ ${RESOLUTION} != 300 && ${RESOLUTION} != 400 @${ECHO_MSG} "Error: invalid value for RESOLUTION: \"${RESOLUTION}\"" @${ECHO_MSG} "Possible values are: 118, 240, 300 (default) and 400." @${FALSE} .endif
japanese/xdvi300 also has all
the regular patches, package files, etc. If you type
make
there, it will take the default value
for the resolution (300) and build the port normally.
As for other resolutions, this is the
entire
xdvi118/Makefile
:
RESOLUTION= 118 MASTERDIR= ${.CURDIR}/../xdvi300 .include "${MASTERDIR}/Makefile"
(xdvi240/Makefile
and
xdvi400/Makefile
are similar). The
MASTERDIR
definition tells
bsd.port.mk
that the regular set of
subdirectories like FILESDIR
and
SCRIPTDIR
are to be found under
xdvi300
. The
RESOLUTION=118
line will override the
RESOLUTION=300
line in
xdvi300/Makefile
and the port will be built
with resolution set to 118.
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