Don't link to libstdc++

New try.
diff --git a/src/Makefile.am b/src/Makefile.am
index a50a199..344cc57 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -137,7 +137,8 @@
 HBHEADERS += hb-uniscribe.h
 endif
 
-CXXLINK = $(LINK)
+# Use a C linker, not C++; Don't link to libstdc++
+libharfbuzz_la_LINK = $(LINK) $(libharfbuzz_la_LDFLAGS)
 libharfbuzz_la_SOURCES = $(HBSOURCES) $(HBHEADERS)
 nodist_libharfbuzz_la_SOURCES = $(nodist_HBSOURCES)
 libharfbuzz_la_CPPFLAGS = $(HBCFLAGS)