Fix linking with non-gcc compilers

configure.ac

diff --git a/configure.ac b/configure.ac
index afb0c5d..e95e48f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -88,6 +88,8 @@
 	esac
 fi
 
+AM_CONDITIONAL(HAVE_GCC, test "x$GCC" = "xyes")
+
 hb_os_win32=no
 AC_MSG_CHECKING([for native Win32])
 case "$host" in

src/Makefile.am

diff --git a/src/Makefile.am b/src/Makefile.am
index 558ce08..d72aa07 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -198,8 +198,12 @@
 if HAVE_ICU
 libharfbuzz_la_LINK = $(CXXLINK) $(libharfbuzz_la_LDFLAGS)
 else
-# Use a C linker, not C++; Don't link to libstdc++
+# Use a C linker for GCC, not C++; Don't link to libstdc++
+if HAVE_GCC
 libharfbuzz_la_LINK = $(LINK) $(libharfbuzz_la_LDFLAGS)
+else
+libharfbuzz_la_LINK = $(CXXLINK) $(libharfbuzz_la_LDFLAGS)
+endif
 endif
 endif