Tijl Coosemans aad09bc5e2 When linking a library libA with a library libB using libtool, if libB.la ... exists, libtool will add all libraries libB.la refers to (dependency_libs field) to the linker command line and store them in the dependency_libs field of libA.la. So everything that subsequently links with libA will also link to these extra libraries. This causes too much overlinking. This commit modifies Mk/Uses/libtool.mk so it empties the dependency_libs field in .la libraries during staging. However, because .la libraries have very limited use when dependency_libs is empty it makes sense to completely remove them during staging. So with this commit USES=libtool is modified to remove .la libraries and a new form (USES=libtool:keepla) is introduced in case they need to be kept (dependency_libs is still emptied). PORTREVISION is bumped on all ports with USES=libtool that install .la libraries. Most ports are also changed to add :keepla because .la libraries have to be kept around as long as there are dependent ports with .la libraries that refer to them in their dependency_libs field. In most cases :keepla can be removed again as soon as all dependent ports that install .la libraries have some form of USES=libtool added to their Makefile. PR: ports/188759 Exp-run: bdrewery Approved by: portmgr (bdrewery)		2014-04-23 13:25:16 +00:00
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