-# isnan.m4 serial 1
-dnl Copyright (C) 2007-2008 Free Software Foundation, Inc.
+# isnan.m4 serial 5
+dnl Copyright (C) 2007-2013 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_REQUIRE([gl_FUNC_ISNAND])
AC_REQUIRE([gl_FUNC_ISNANL])
- ISNAN_LIBM="$ISNANF_LIBM $ISNAND_LIBM $ISNANL_LIBM"
- AC_SUBST([ISNAN_LIBM])
-
# If we replaced any of the underlying isnan* functions, replace
# the isnan macro; it undoubtedly suffers from the same flaws.
AC_MSG_CHECKING([whether isnan macro works])
&& test $gl_func_isnand = yes \
&& test $gl_func_isnanl = yes; then
AC_MSG_RESULT([yes])
+ ISNAN_LIBM=
+ dnl Append $ISNANF_LIBM to ISNAN_LIBM, avoiding gratuitous duplicates.
+ case " $ISNAN_LIBM " in
+ *" $ISNANF_LIBM "*) ;;
+ *) ISNAN_LIBM="$ISNAN_LIBM $ISNANF_LIBM" ;;
+ esac
+ dnl Append $ISNAND_LIBM to ISNAN_LIBM, avoiding gratuitous duplicates.
+ case " $ISNAN_LIBM " in
+ *" $ISNAND_LIBM "*) ;;
+ *) ISNAN_LIBM="$ISNAN_LIBM $ISNAND_LIBM" ;;
+ esac
+ dnl Append $ISNANL_LIBM to ISNAN_LIBM, avoiding gratuitous duplicates.
+ case " $ISNAN_LIBM " in
+ *" $ISNANL_LIBM "*) ;;
+ *) ISNAN_LIBM="$ISNAN_LIBM $ISNANL_LIBM" ;;
+ esac
else
- # Make sure the rpl_isnan[fdl] functions get built.
- gl_BUILD_ISNANF
- gl_BUILD_ISNAND
- gl_BUILD_ISNANL
- REPLACE_ISNAN=1
AC_MSG_RESULT([no])
+ dnl REPLACE_ISNAN=1 also makes sure the rpl_isnan[fdl] functions get built.
+ REPLACE_ISNAN=1
+ ISNAN_LIBM=
fi
+ AC_SUBST([ISNAN_LIBM])
])