Mercurial > gnulib
view m4/exp2f.m4 @ 40140:81f075eaa990
ptsname_r: Work around bug on Android 4.3.
* m4/ptsname_r.m4 (gl_FUNC_PTSNAME_R): Define
HAVE_ESSENTIALLY_WORKING_PTSNAME_R. Test whether the return value is
correct.
* lib/ptsname_r.c (__ptsname_r): If HAVE_ESSENTIALLY_WORKING_PTSNAME_R
is defined, just fix the return value.
* doc/glibc-functions/ptsname_r.texi: Mention the Android bug. Reword:
The behaviour of musl libc is nothing to be "fixed", since it is
compliant with the next POSIX standard.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 26 Jan 2019 15:23:19 +0100 |
parents | b06060465f09 |
children |
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# exp2f.m4 serial 1 dnl Copyright (C) 2011-2019 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_EXP2F], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) AC_REQUIRE([gl_FUNC_EXP2]) dnl Persuade glibc <math.h> to declare exp2f(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) dnl Test whether exp2f() exists. Assume that exp2f(), if it exists, is dnl defined in the same library as exp2(). save_LIBS="$LIBS" LIBS="$LIBS $EXP2_LIBM" AC_CHECK_FUNCS([exp2f]) LIBS="$save_LIBS" if test $ac_cv_func_exp2f = yes; then HAVE_EXP2F=1 EXP2F_LIBM="$EXP2_LIBM" dnl Also check whether it's declared. dnl IRIX 6.5 has exp2f() in libm but doesn't declare it in <math.h>. AC_CHECK_DECL([exp2f], , [HAVE_DECL_EXP2F=0], [[#include <math.h>]]) else HAVE_EXP2F=0 HAVE_DECL_EXP2F=0 dnl Find libraries needed to link lib/exp2f.c. EXP2F_LIBM="$EXP2_LIBM" fi AC_SUBST([EXP2F_LIBM]) ])