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)

1 files changed, 2 insertions, 1 deletions

diff --git a/benchmarks/iperf3/Makefile b/benchmarks/iperf3/Makefile
index f6642845fafb..0a2b591808e0 100644
--- a/benchmarks/iperf3/Makefile
+++ b/benchmarks/iperf3/Makefile
@@ -3,6 +3,7 @@
 
 PORTNAME=	iperf
 PORTVERSION=	3.0.3
+PORTREVISION=	1
 CATEGORIES=	benchmarks ipv6
 MASTER_SITES=	http://stats.es.net/software/
 PKGNAMESUFFIX=	3
@@ -13,8 +14,8 @@ COMMENT=	Improved tool to measure TCP and UDP bandwidth
 LICENSE=	BSD3CLAUSE
 
 GNU_CONFIGURE=	yes
+USES=		libtool:keepla
 USE_LDCONFIG=	yes
-USES=		libtool
 
 # Set ${DOCSDIR} to avoid conflict with benchmarks/iperf ${DOCSDIR}
 DOCSDIR=	${PREFIX}/share/doc/${PORTNAME}${PKGNAMESUFFIX}