This patch fixes Makefile.in to include mention of new syncbuf.lo.
libstdc++-v3/Changelog:
* src/c++20/Makefile.in: Mention syncbuf.lo.
CONFIG_CLEAN_VPATH_FILES =
LTLIBRARIES = $(noinst_LTLIBRARIES)
libc__20convenience_la_LIBADD =
-am__objects_1 = tzdb.lo format.lo atomic.lo clock.lo
+am__objects_1 = tzdb.lo format.lo atomic.lo clock.lo syncbuf.lo
@ENABLE_EXTERN_TEMPLATE_TRUE@am__objects_2 = sstream-inst.lo
@GLIBCXX_HOSTED_TRUE@am_libc__20convenience_la_OBJECTS = \
@GLIBCXX_HOSTED_TRUE@ $(am__objects_1) $(am__objects_2)