-# tanl.m4 serial 1
+# tanl.m4 serial 2
dnl Copyright (C) 2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
AC_REQUIRE([gl_FUNC_ISNANL])
AC_REQUIRE([gl_FUNC_FLOOR])
AC_REQUIRE([gl_FUNC_FLOORL])
- TANL_LIBM="$ISNANL_LIBM $FLOOR_LIBM $FLOORL_LIBM"
+ dnl Append $ISNANL_LIBM to TANL_LIBM, avoiding gratuitous duplicates.
+ case " $TANL_LIBM " in
+ *" $ISNANL_LIBM "*) ;;
+ *) TANL_LIBM="$TANL_LIBM $ISNANL_LIBM" ;;
+ esac
+ dnl Append $FLOOR_LIBM to TANL_LIBM, avoiding gratuitous duplicates.
+ case " $TANL_LIBM " in
+ *" $FLOOR_LIBM "*) ;;
+ *) TANL_LIBM="$TANL_LIBM $FLOOR_LIBM" ;;
+ esac
+ dnl Append $FLOORL_LIBM to TANL_LIBM, avoiding gratuitous duplicates.
+ case " $TANL_LIBM " in
+ *" $FLOORL_LIBM "*) ;;
+ *) TANL_LIBM="$TANL_LIBM $FLOORL_LIBM" ;;
+ esac
fi
AC_SUBST([TANL_LIBM])
])