Move setting of NO_MATHERR for Darwin from src/s to configure

* configure.ac (NO_MATHERR): Unconditionally define for Darwin;
as src/s/darwin.h used to.

* src/s/darwin.h (NO_MATHERR): Let configure set it.

ChangeLog

 2012-07-12  Glenn Morris  <rgm@gnu.org>
 
+	* configure.ac (NO_MATHERR): Unconditionally define for Darwin;
+	as src/s/darwin.h used to.
+
 	* configure.ac (NARROWPROTO): Move here from src/s.
 
 2012-07-11  Glenn Morris  <rgm@gnu.org>

configure.ac

@@ -1266,7 +1266,9 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <math.h>]],
 [[static struct exception x; x.arg1 = x.arg2 = x.retval; x.name = ""; x.type = 1;]])],
   emacs_cv_struct_exception=yes, emacs_cv_struct_exception=no))
 HAVE_EXCEPTION=$emacs_cv_struct_exception
-if test $emacs_cv_struct_exception != yes; then
+dnl Define on Darwin so emacs symbols will not conflict with those
+dnl in the System framework.  Otherwise -prebind will not work.
+if test $emacs_cv_struct_exception != yes || test $opsys = darwin; then
   AC_DEFINE(NO_MATHERR, 1, [Define to 1 if you don't have struct exception in math.h.])
 fi
 

src/ChangeLog

 2012-07-12  Glenn Morris  <rgm@gnu.org>
+	* s/darwin.h (NO_MATHERR): Let configure set it.
+
 	* s/bsd-common.h, s/cygwin.h, s/gnu-linux.h, s/irix6-5.h:
 	* s/template.h: Move NARROWPROTO to configure.

src/s/darwin.h

@@ -82,9 +82,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 /* Do not define abort in emacs.c.  */
 #define NO_ABORT
 
-/* Do not define matherr in floatfns.c.  */
-#define NO_MATHERR
-
 /* The following solves the problem that Emacs hangs when evaluating
    (make-comint "test0" "/nodir/nofile" nil "") when /nodir/nofile
    does not exist.  Also, setsid is not allowed in the vfork child's