Mercurial > gnulib
view m4/floorl.m4 @ 17363:5a51fb7777a9
sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin
Problem reported by Marco Atzeri in
<http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>.
* lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]:
Simply delegate to the system <sys/select.h> in this case too.
Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only
if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to
be needed on Solaris either.
* lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]:
Simply delgate to the system <sys/time.h> in this case.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Tue, 19 Mar 2013 09:08:47 -0700 |
parents | e542fd46ad6f |
children | 344018b6e5d7 |
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# floorl.m4 serial 11 dnl Copyright (C) 2007, 2009-2013 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_DEFUN([gl_FUNC_FLOORL], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) dnl Persuade glibc <math.h> to declare floorl(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) dnl Test whether floorl() is declared. AC_CHECK_DECLS([floorl], , , [[#include <math.h>]]) if test "$ac_cv_have_decl_floorl" = yes; then dnl Test whether floorl() can be used without libm. gl_FUNC_FLOORL_LIBS if test "$FLOORL_LIBM" = "?"; then dnl Sun C 5.0 on Solaris declares floorl() and has it in the system-wide dnl libm.so, but not in the libm.so that the compiler uses. REPLACE_FLOORL=1 fi else HAVE_DECL_FLOORL=0 fi if test $HAVE_DECL_FLOORL = 0 || test $REPLACE_FLOORL = 1; then dnl Find libraries needed to link lib/floorl.c. if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then AC_REQUIRE([gl_FUNC_FLOOR]) FLOORL_LIBM="$FLOOR_LIBM" else FLOORL_LIBM= fi fi AC_SUBST([FLOORL_LIBM]) ]) # Determines the libraries needed to get the floorl() function. # Sets FLOORL_LIBM. AC_DEFUN([gl_FUNC_FLOORL_LIBS], [ gl_CACHE_VAL_SILENT([gl_cv_func_floorl_libm], [ gl_cv_func_floorl_libm=? AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#ifndef __NO_MATH_INLINES # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> long double (*funcptr) (long double) = floorl; long double x;]], [[x = funcptr (x) + floorl(x);]])], [gl_cv_func_floorl_libm=]) if test "$gl_cv_func_floorl_libm" = "?"; then save_LIBS="$LIBS" LIBS="$LIBS -lm" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#ifndef __NO_MATH_INLINES # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> long double (*funcptr) (long double) = floorl; long double x;]], [[x = funcptr (x) + floorl(x);]])], [gl_cv_func_floorl_libm="-lm"]) LIBS="$save_LIBS" fi ]) FLOORL_LIBM="$gl_cv_func_floorl_libm" ])