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Document bsd.sites.mk macro magic

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Andrew Pantyukhin 2006-08-04 20:44:18 +00:00
parent 8e84b84f8b
commit 88f1e1cb1f
Notes: svn2git 2021-03-31 03:12:20 +00:00 
svn path=/head/; revision=169694
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@ -10,6 +10,33 @@ in the release notes.
All ports committers are allowed to commit to this file.
20060805:
AUTHOR: sat@FreeBSD.org
The following functional changes were made to bsd.sites.mk:
* MASTER_SITES variable can now contain special macros which are expanded into
traditional URL[:group] syntax and cause some convenient effects, e.g. set a
default M_S_SUBDIR.
* A macro is any space-delimited word in MASTER_SITES without a forward slash.
* If MASTER_SITE_<macro> is defined, then the macro is expanded to its value.
* Abbreviated macros are provided for extremely popular locations, e.g. CPAN
and SF. To avoid further obfuscation their unabbreviated equivalents should
be avoided.
* Popular macros can trigger M_S_SUBDIR to default to a predefined value, e.g.
${PORTNAME:L} for SF and ${PORTNAME:C/-.*//} for CPAN.
* Abbreviations and M_S_SUBDIR defaults are defined by MASTER_SITES_ABBREVS
and MASTER_SITES_SUBDIRS, both set in bsd.sites.mk.
* If a macro belongs to a group (e.g. SF:source1), all the sites it expands
into also belong to the same group.
* Macros and traditional URL's can be mixed safely, their order stays intact.
20060804:
AUTHOR: gabor@FreeBSD.org
The following functional changes were made to bsd.*.mk and to