Mercurial > gnulib
view m4/cosl.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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# cosl.m4 serial 8 dnl Copyright (C) 2010-2013 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_COSL], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) dnl Persuade glibc <math.h> to declare cosl(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) COSL_LIBM= AC_CACHE_CHECK([whether cosl() can be used without linking with libm], [gl_cv_func_cosl_no_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) = cosl; long double x;]], [[return funcptr (x) > 0.4 || cosl (x) > 0.4;]])], [gl_cv_func_cosl_no_libm=yes], [gl_cv_func_cosl_no_libm=no]) ]) if test $gl_cv_func_cosl_no_libm = no; then AC_CACHE_CHECK([whether cosl() can be used with libm], [gl_cv_func_cosl_in_libm], [ save_LIBS="$LIBS" LIBS="$LIBS -lm" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#ifndef __NO_MATH_INLINES # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> long double (*funcptr) (long double) = cosl; long double x;]], [[return funcptr (x) > 0.4 || cosl (x) > 0.4;]])], [gl_cv_func_cosl_in_libm=yes], [gl_cv_func_cosl_in_libm=no]) LIBS="$save_LIBS" ]) if test $gl_cv_func_cosl_in_libm = yes; then COSL_LIBM=-lm fi fi if test $gl_cv_func_cosl_no_libm = yes \ || test $gl_cv_func_cosl_in_libm = yes; then dnl Also check whether it's declared. dnl Mac OS X 10.3 has cosl() in libc but doesn't declare it in <math.h>. AC_CHECK_DECL([cosl], , [HAVE_DECL_COSL=0], [[#include <math.h>]]) else HAVE_DECL_COSL=0 HAVE_COSL=0 dnl Find libraries needed to link lib/cosl.c, lib/sincosl.c, lib/trigl.c. if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then AC_REQUIRE([gl_FUNC_COS]) COSL_LIBM="$COS_LIBM" else AC_REQUIRE([gl_FUNC_ISNANL]) AC_REQUIRE([gl_FUNC_FLOOR]) AC_REQUIRE([gl_FUNC_FLOORL]) dnl Append $ISNANL_LIBM to COSL_LIBM, avoiding gratuitous duplicates. case " $COSL_LIBM " in *" $ISNANL_LIBM "*) ;; *) COSL_LIBM="$COSL_LIBM $ISNANL_LIBM" ;; esac dnl Append $FLOOR_LIBM to COSL_LIBM, avoiding gratuitous duplicates. case " $COSL_LIBM " in *" $FLOOR_LIBM "*) ;; *) COSL_LIBM="$COSL_LIBM $FLOOR_LIBM" ;; esac dnl Append $FLOORL_LIBM to COSL_LIBM, avoiding gratuitous duplicates. case " $COSL_LIBM " in *" $FLOORL_LIBM "*) ;; *) COSL_LIBM="$COSL_LIBM $FLOORL_LIBM" ;; esac fi fi AC_SUBST([COSL_LIBM]) ])