-# sinl.m4 serial 1
-dnl Copyright (C) 2010 Free Software Foundation, Inc.
+# sinl.m4 serial 4
+dnl Copyright (C) 2010-2011 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_CACHE_CHECK([whether sinl() can be used without linking with libm],
[gl_cv_func_sinl_no_libm],
[
- AC_TRY_LINK([#ifndef __NO_MATH_INLINES
- # define __NO_MATH_INLINES 1 /* for glibc */
- #endif
- #include <math.h>
- long double x;],
- [return sinl (x) > 0.4;],
+ AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#ifndef __NO_MATH_INLINES
+ # define __NO_MATH_INLINES 1 /* for glibc */
+ #endif
+ #include <math.h>
+ long double x;]],
+ [[return sinl (x) > 0.4;]])],
[gl_cv_func_sinl_no_libm=yes],
[gl_cv_func_sinl_no_libm=no])
])
[
save_LIBS="$LIBS"
LIBS="$LIBS -lm"
- AC_TRY_LINK([#ifndef __NO_MATH_INLINES
- # define __NO_MATH_INLINES 1 /* for glibc */
- #endif
- #include <math.h>
- long double x;],
- [return sinl (x) > 0.4;],
+ AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#ifndef __NO_MATH_INLINES
+ # define __NO_MATH_INLINES 1 /* for glibc */
+ #endif
+ #include <math.h>
+ long double x;]],
+ [[return sinl (x) > 0.4;]])],
[gl_cv_func_sinl_in_libm=yes],
[gl_cv_func_sinl_in_libm=no])
LIBS="$save_LIBS"
else
HAVE_DECL_SINL=0
HAVE_SINL=0
- AC_LIBOBJ([sinl])
- AC_LIBOBJ([sincosl])
- AC_LIBOBJ([trigl])
+ dnl Find libraries needed to link lib/sinl.c, lib/sincosl.c, lib/trigl.c.
AC_REQUIRE([gl_FUNC_ISNANL])
AC_REQUIRE([gl_FUNC_FLOOR])
AC_REQUIRE([gl_FUNC_FLOORL])
- SINL_LIBM="$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])
])