12.5. Writing Something After bsd.port.mk

Do not write anything after the .include <bsd.port.mk> line. It usually can be avoided by including bsd.port.pre.mk somewhere in the middle of your Makefile and bsd.port.post.mk at the end.

Note:

Include either the bsd.port.pre.mk/bsd.port.post.mk pair or bsd.port.mk only; do not mix these two usages.

bsd.port.pre.mk only defines a few variables, which can be used in tests in the Makefile, bsd.port.post.mk defines the rest.

Here are some important variables defined in bsd.port.pre.mk (this is not the complete list, please read bsd.port.mk for the complete list).

VariableDescription
ARCHThe architecture as returned by uname -m (e.g., i386)
OPSYSThe operating system type, as returned by uname -s (e.g., FreeBSD)
OSRELThe release version of the operating system (e.g., 2.1.5 or 2.2.7)
OSVERSIONThe numeric version of the operating system; the same as __FreeBSD_version.
LOCALBASEThe base of the local tree (e.g., /usr/local)
PREFIXWhere the port installs itself (see more on PREFIX).

Note:

If you have to define the variable MASTERDIR, do so before including bsd.port.pre.mk.

Here are some examples of things you can write after bsd.port.pre.mk:

# no need to compile lang/perl5 if perl5 is already in system
.if ${OSVERSION} > 300003
BROKEN=	perl is in system
.endif

You did remember to use tab instead of spaces after BROKEN= and :-).

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