-# ceilf.m4 serial 1
-dnl Copyright (C) 2007 Free Software Foundation, Inc.
+# ceilf.m4 serial 4
+dnl Copyright (C) 2007, 2009, 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,
dnl with or without modifications, as long as this notice is preserved.
AC_CHECK_DECLS([ceilf], , , [#include <math.h>])
if test "$ac_cv_have_decl_ceilf" = yes; then
dnl Test whether ceilf() can be used without libm.
- CEILF_LIBM=?
+ gl_FUNC_CEILF_LIBS
+ if test "$CEILF_LIBM" = "?"; then
+ dnl Sun C 5.0 on Solaris declares ceilf() and has it in the system-wide
+ dnl libm.so, but not in the libm.so that the compiler uses.
+ REPLACE_CEILF=1
+ fi
+ else
+ REPLACE_CEILF=1
+ fi
+ if test $REPLACE_CEILF = 1; then
+ AC_LIBOBJ([ceilf])
+ CEILF_LIBM=
+ fi
+ AC_SUBST([REPLACE_CEILF])
+ AC_SUBST([CEILF_LIBM])
+])
+
+# Determines the libraries needed to get the ceilf() function.
+# Sets CEILF_LIBM.
+AC_DEFUN([gl_FUNC_CEILF_LIBS],
+[
+ gl_CACHE_VAL_SILENT([gl_cv_func_ceilf_libm], [
+ gl_cv_func_ceilf_libm=?
AC_TRY_LINK([
#ifndef __NO_MATH_INLINES
# define __NO_MATH_INLINES 1 /* for glibc */
#include <math.h>
float x;],
[x = ceilf(x);],
- [CEILF_LIBM=])
- if test "$CEILF_LIBM" = "?"; then
+ [gl_cv_func_ceilf_libm=])
+ if test "$gl_cv_func_ceilf_libm" = "?"; then
save_LIBS="$LIBS"
LIBS="$LIBS -lm"
AC_TRY_LINK([
#include <math.h>
float x;],
[x = ceilf(x);],
- [CEILF_LIBM="-lm"])
+ [gl_cv_func_ceilf_libm="-lm"])
LIBS="$save_LIBS"
fi
- if test "$CEILF_LIBM" = "?"; then
- CEILF_LIBM=
- fi
- else
- HAVE_DECL_CEILF=0
- AC_LIBOBJ([ceilf])
- CEILF_LIBM=
- fi
- AC_SUBST([HAVE_DECL_CEILF])
- AC_SUBST([CEILF_LIBM])
+ ])
+ CEILF_LIBM="$gl_cv_func_ceilf_libm"
])