Add new LIBSOFT option. This is similar to the LIB32 option, except

for libraries that follow the soft float ABI. It's only supported on
armv6 as a transition to the new hard float ABI, so mark as broken
everywhere else.

share/mk/src.opts.mk

@@ -180,6 +180,7 @@ __DEFAULT_NO_OPTIONS = \
     DTRACE_TESTS \
     EISA \
     HESIOD \
+    LIBSOFT \
     NAND \
     OFED \
     OPENLDAP \
@@ -248,6 +249,10 @@ __DEFAULT_NO_OPTIONS+=LLDB
 .if ${__T} == "arm" || ${__T} == "armeb"
 BROKEN_OPTIONS+=LLDB
 .endif
+# Only doing soft float API stuff on armv6
+.if ${__T} != "armv6"
+BROKEN_OPTIONS+=LIBSOFT
+.endif
 
 .include <bsd.mkopt.mk>