[src/trunk]: src/share/mk Make it easier build binaries against the host's li...

[pooka <pooka%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/2fd6e294f6b7
branches:  trunk
changeset: 782677:2fd6e294f6b7
user:      pooka <pooka%NetBSD.org@localhost>
date:      Tue Nov 13 22:30:38 2012 +0000

description:
Make it easier build binaries against the host's libs, e.g.
libpthread which might be in /lib/x86_64-linux-gnu/libpthread.so.0
or some other unholy place.

diffstat:

 share/mk/bsd.README |  7 ++++++-
 share/mk/bsd.lib.mk |  6 +++++-
 2 files changed, 11 insertions(+), 2 deletions(-)

diffs (43 lines):

diff -r c9bc8005a17f -r 2fd6e294f6b7 share/mk/bsd.README
--- a/share/mk/bsd.README       Tue Nov 13 20:47:58 2012 +0000
+++ b/share/mk/bsd.README       Tue Nov 13 22:30:38 2012 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: bsd.README,v 1.306 2012/11/04 16:27:28 christos Exp $
+#      $NetBSD: bsd.README,v 1.307 2012/11/13 22:30:38 pooka Exp $
 #      @(#)bsd.README  8.2 (Berkeley) 4/2/94
 
 This is the README file for the make "include" files for the NetBSD
@@ -1165,6 +1165,11 @@
                     *  DPADD gets  ${LIBDO.libname}/liblibname.so  or
                                    ${LIBDO.libname}/liblibname.a   added.
 
+               The special value "_external" for LIBDO.lib makes the
+               build system to assume the library comes from outside
+               of the NetBSD source tree and only causes -llibname
+               to be added to LDADD.
+
                This variable may be used for individual libraries, as
                well as in parent directories to cache common libraries
                as a build-time optimization.
diff -r c9bc8005a17f -r 2fd6e294f6b7 share/mk/bsd.lib.mk
--- a/share/mk/bsd.lib.mk       Tue Nov 13 20:47:58 2012 +0000
+++ b/share/mk/bsd.lib.mk       Tue Nov 13 22:30:38 2012 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: bsd.lib.mk,v 1.324 2012/08/23 21:21:16 joerg Exp $
+#      $NetBSD: bsd.lib.mk,v 1.325 2012/11/13 22:30:38 pooka Exp $
 #      @(#)bsd.lib.mk  8.3 (Berkeley) 4/22/94
 
 .include <bsd.init.mk>
@@ -54,8 +54,12 @@
 LIBDO.${_lib}!=        cd "${_dir}" && ${PRINTOBJDIR}
 .MAKEOVERRIDES+=LIBDO.${_lib}
 .endif
+.if ${LIBDO.${_lib}} == "_external"
+LDADD+=                -l${_lib}
+.else
 LDADD+=                -L${LIBDO.${_lib}} -l${_lib}
 DPADD+=                ${LIBDO.${_lib}}/lib${_lib}.so
+.endif
 .endfor
 .endif                                                                 # }