[PATCH] m4: Fix interpretation of MACOSX_DEPLOYMENT_TARGET

[Lawrence Velázquez]

The current template mistakenly treats a MACOSX_DEPLOYMENT_TARGET value
of "10.10" as "10.1" followed by junk. Thinking that the build is
targeteting 10.1 Puma instead of 10.10 Yosemite, it tells the linker to
ignore undefined symbols instead of dynamically resolving them. This can
cause runtime crashes* and will affect subsequent versions of OS X.

    * https://trac.macports.org/ticket/44596

Signed-off-by: Lawrence Velázquez <address@hidden>
---
 m4/libtool.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/m4/libtool.m4 b/m4/libtool.m4
index 320d8b3..068f0d8 100644
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -1043,7 +1043,7 @@ _LT_EOF
       case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
        10.0,*86*-darwin8*|10.0,*-darwin[[91]]*)
          _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
-       10.[[012]]*)
+       10.[[012]][[,.]]*)
          _lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined 
${wl}suppress' ;;
        10.*)
          _lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
-- 
2.1.0