X-Git-Url: https://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fsinl.m4;h=c9c0e5c48e4b26a46d9fe2053808902dc4dfaa50;hb=db2ebe9d04c394f51b2b0f4306c9f9a79959b1da;hp=12393264b680c0961432b3069fcf2e57b0136a9c;hpb=73e329f11142c2804e42825e1590041d68dbb6e9;p=gnulib.git

diff --git a/m4/sinl.m4 b/m4/sinl.m4
index 12393264b..c9c0e5c48 100644
--- a/m4/sinl.m4
+++ b/m4/sinl.m4
@@ -1,4 +1,4 @@
-# sinl.m4 serial 1
+# sinl.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,
@@ -57,7 +57,21 @@ AC_DEFUN([gl_FUNC_SINL],
     AC_REQUIRE([gl_FUNC_ISNANL])
     AC_REQUIRE([gl_FUNC_FLOOR])
     AC_REQUIRE([gl_FUNC_FLOORL])
-    SINL_LIBM="$ISNANL_LIBM $FLOOR_LIBM $FLOORL_LIBM"
+    dnl Append $ISNANL_LIBM to SINL_LIBM, avoiding gratuitous duplicates.
+    case " $SINL_LIBM " in
+      *" $ISNANL_LIBM "*) ;;
+      *) SINL_LIBM="$SINL_LIBM $ISNANL_LIBM" ;;
+    esac
+    dnl Append $FLOOR_LIBM to SINL_LIBM, avoiding gratuitous duplicates.
+    case " $SINL_LIBM " in
+      *" $FLOOR_LIBM "*) ;;
+      *) SINL_LIBM="$SINL_LIBM $FLOOR_LIBM" ;;
+    esac
+    dnl Append $FLOORL_LIBM to SINL_LIBM, avoiding gratuitous duplicates.
+    case " $SINL_LIBM " in
+      *" $FLOORL_LIBM "*) ;;
+      *) SINL_LIBM="$SINL_LIBM $FLOORL_LIBM" ;;
+    esac
   fi
   AC_SUBST([SINL_LIBM])
 ])