AM_CONDITIONAL(NEED_VASPRINTF, test x$have_vasprintf = x )
AC_CHECK_LIB(iconv, iconv_open, LIBS="$LIBS -liconv")
AC_CHECK_LIB(iconv, libiconv_open, LIBS="$LIBS -liconv")
+AC_CHECK_LIB(iconv, iconv_open, ICONV_LIBS="-liconv")
+AC_CHECK_LIB(iconv, libiconv_open, ICONV_LIBS="-liconv")
+AC_SUBST(ICONV_LIBS)
+LIBS="$LIBS $ICONV_LIBS"
AC_SEARCH_LIBS(sqrtf, m)
# nanosleep may not be part of libc, also search it in other libraries