X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fasinl.m4;h=1f5bc6df4a8e627e0924dc9bdf55f4d92587ee11;hb=4e48756921cae0aec44afad18bfaa881890e6142;hp=f2281a2327125dd3c1378ef960a1a8fd71832702;hpb=73e329f11142c2804e42825e1590041d68dbb6e9;p=gnulib.git

diff --git a/m4/asinl.m4 b/m4/asinl.m4
index f2281a232..1f5bc6df4 100644
--- a/m4/asinl.m4
+++ b/m4/asinl.m4
@@ -1,4 +1,4 @@
-# asinl.m4 serial 1
+# asinl.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,
@@ -53,7 +53,11 @@ AC_DEFUN([gl_FUNC_ASINL],
     HAVE_ASINL=0
     AC_LIBOBJ([asinl])
     AC_REQUIRE([gl_FUNC_SQRTL])
-    ASINL_LIBM="$SQRTL_LIBM"
+    dnl Append $SQRTL_LIBM to ASINL_LIBM, avoiding gratuitous duplicates.
+    case " $ASINL_LIBM " in
+      *" $SQRTL_LIBM "*) ;;
+      *) ASINL_LIBM="$ASINL_LIBM $SQRTL_LIBM" ;;
+    esac
   fi
   AC_SUBST([ASINL_LIBM])
 ])