Disable compiler version check in configure. This way, the build progresses to a clang error. When looking at this, consider upgrading the package to 2.16 first, perhaps it's already fixed there.

(wiz)

 @@ -1,9 +1,10 @@
-$NetBSD: distinfo,v 1.14 2012/12/15 10:01:20 marino Exp $
+$NetBSD: distinfo,v 1.15 2012/12/25 15:30:14 wiz Exp $
 SHA1 (lilypond-2.14.2.tar.gz) = 0ea657bb184d9d6a2e3f6bca91e6b0d62a3a013e
 RMD160 (lilypond-2.14.2.tar.gz) = 74123b2db40519feaf8144fd19becf3ad81738e7
 Size (lilypond-2.14.2.tar.gz) = 15224418 bytes
 SHA1 (patch-aa) = 50b9029a067b3f324da497465c7b2e6a2384f3f0
 SHA1 (patch-ab) = 5f210ada53a5062da1173c257095ebddf407d67d
 SHA1 (patch-ac) = d9565da9b315f2867882052d57394132d7e824a4
 SHA1 (patch-configure) = b0c73d828f26fb8db895ace55a678a6d7b09db0e
 SHA1 (patch-lily_music-sequence.cc) = 8f8c8ce78ae5a420065f7d084a9bcecfc707f322

$NetBSD: patch-configure,v 1.1 2012/12/25 15:30:14 wiz Exp $ Disable c/c++ version check; it fails e.g. with clang emulating gcc. --- configure.orig 2012-12-25 15:26:16.000000000 +0000 +++ configure @@ -4485,7 +4485,7 @@ $as_echo_n "checking $r version... " >&6 ` { $as_echo "$as_me:$LINENO: result: $ver" >&5 $as_echo "$ver" >&6; } - if test "$num" -lt "$req"; then + if false; then eval "REQUIRED"=\"`eval echo \"'$'REQUIRED\" \""$r >= 3.4 (installed: $ver)"\"`\" @@ -4978,7 +4978,7 @@ $as_echo_n "checking $r version... " >&6 ` { $as_echo "$as_me:$LINENO: result: $ver" >&5 $as_echo "$ver" >&6; } - if test "$num" -lt "$req"; then + if false; then eval "REQUIRED"=\"`eval echo \"'$'REQUIRED\" \""$r >= 3.4 (installed: $ver)"\"`\"