| dnl acinclude.m4 -- Extra macros needed for GNU make. |
| dnl |
| dnl Automake will incorporate this into its generated aclocal.m4. |
| dnl Copyright (C) 1998-2019 Free Software Foundation, Inc. |
| dnl This file is part of GNU Make. |
| dnl |
| dnl GNU Make is free software; you can redistribute it and/or modify it under |
| dnl the terms of the GNU General Public License as published by the Free |
| dnl Software Foundation; either version 3 of the License, or (at your option) |
| dnl any later version. |
| dnl |
| dnl GNU Make is distributed in the hope that it will be useful, but WITHOUT |
| dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| dnl FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for. |
| dnl more details. |
| dnl |
| dnl You should have received a copy of the GNU General Public License along |
| dnl with this program. If not, see <http://www.gnu.org/licenses/>. |
| |
| dnl --------------------------------------------------------------------------- |
| dnl Got this from the lynx 2.8 distribution. |
| dnl by T.E.Dickey <dickey@clark.net> |
| dnl and Jim Spath <jspath@mail.bcpl.lib.md.us> |
| dnl and Philippe De Muyter <phdm@macqel.be> |
| dnl |
| dnl Created: 1997/1/28 |
| dnl Updated: 1997/12/23 |
| dnl --------------------------------------------------------------------------- |
| dnl After checking for functions in the default $LIBS, make a further check |
| dnl for the functions that are netlib-related (these aren't always in the |
| dnl libc, etc., and have to be handled specially because there are conflicting |
| dnl and broken implementations. |
| dnl Common library requirements (in order): |
| dnl -lresolv -lsocket -lnsl |
| dnl -lnsl -lsocket |
| dnl -lsocket |
| dnl -lbsd |
| AC_DEFUN([CF_NETLIBS],[ |
| cf_test_netlibs=no |
| AC_MSG_CHECKING(for network libraries) |
| AC_CACHE_VAL(cf_cv_netlibs,[ |
| AC_MSG_RESULT(working...) |
| cf_cv_netlibs="" |
| cf_test_netlibs=yes |
| AC_CHECK_FUNCS(gethostname,,[ |
| CF_RECHECK_FUNC(gethostname,nsl,cf_cv_netlibs,[ |
| CF_RECHECK_FUNC(gethostname,socket,cf_cv_netlibs)])]) |
| # |
| # FIXME: sequent needs this library (i.e., -lsocket -linet -lnsl), but |
| # I don't know the entrypoints - 97/7/22 TD |
| AC_CHECK_LIB(inet,main,cf_cv_netlibs="-linet $cf_cv_netlibs") |
| # |
| if test "$ac_cv_func_lsocket" != no ; then |
| AC_CHECK_FUNCS(socket,,[ |
| CF_RECHECK_FUNC(socket,socket,cf_cv_netlibs,[ |
| CF_RECHECK_FUNC(socket,bsd,cf_cv_netlibs)])]) |
| fi |
| # |
| AC_CHECK_FUNCS(gethostbyname,,[ |
| CF_RECHECK_FUNC(gethostbyname,nsl,cf_cv_netlibs)]) |
| ]) |
| LIBS="$LIBS $cf_cv_netlibs" |
| test $cf_test_netlibs = no && echo "$cf_cv_netlibs" >&AC_FD_MSG |
| ])dnl |
| dnl --------------------------------------------------------------------------- |
| dnl Re-check on a function to see if we can pick it up by adding a library. |
| dnl $1 = function to check |
| dnl $2 = library to check in |
| dnl $3 = environment to update (e.g., $LIBS) |
| dnl $4 = what to do if this fails |
| dnl |
| dnl This uses 'unset' if the shell happens to support it, but leaves the |
| dnl configuration variable set to 'unknown' if not. This is a little better |
| dnl than the normal autoconf test, which gives misleading results if a test |
| dnl for the function is made (e.g., with AC_CHECK_FUNC) after this macro is |
| dnl used (autoconf does not distinguish between a null token and one that is |
| dnl set to 'no'). |
| AC_DEFUN([CF_RECHECK_FUNC],[ |
| AC_CHECK_LIB($2,$1,[ |
| CF_UPPER(cf_tr_func,$1) |
| AC_DEFINE_UNQUOTED(HAVE_$cf_tr_func,1,[Define if you have function $1]) |
| ac_cv_func_$1=yes |
| $3="-l$2 [$]$3"],[ |
| ac_cv_func_$1=unknown |
| unset ac_cv_func_$1 2>/dev/null |
| $4], |
| [[$]$3]) |
| ])dnl |
| dnl --------------------------------------------------------------------------- |
| dnl Make an uppercase version of a variable |
| dnl $1=uppercase($2) |
| AC_DEFUN([CF_UPPER], |
| [ |
| changequote(,)dnl |
| $1=`echo $2 | tr '[a-z]' '[A-Z]'` |
| changequote([,])dnl |
| ])dnl |
| |
| |
| dnl --------------------------------------------------------------------------- |
| dnl From Paul Eggert <eggert@twinsun.com> |
| dnl Update for Darwin by Troy Runkel <Troy.Runkel@mathworks.com> |
| dnl Update for AIX by Olexiy Buyanskyy (Savannah bug 32485) |
| |
| AC_DEFUN([AC_STRUCT_ST_MTIM_NSEC], |
| [AC_CACHE_CHECK([for nanoseconds field of struct stat], |
| ac_cv_struct_st_mtim_nsec, |
| [ac_save_CPPFLAGS="$CPPFLAGS" |
| ac_cv_struct_st_mtim_nsec=no |
| # st_mtim.tv_nsec -- the usual case |
| # st_mtim._tv_nsec -- Solaris 2.6, if |
| # (defined _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED == 1 |
| # && !defined __EXTENSIONS__) |
| # st_mtim.st__tim.tv_nsec -- UnixWare 2.1.2 |
| # st_mtime_n -- AIX 5.2 and above |
| # st_mtimespec.tv_nsec -- Darwin (Mac OSX) |
| for ac_val in st_mtim.tv_nsec st_mtim._tv_nsec st_mtim.st__tim.tv_nsec st_mtime_n st_mtimespec.tv_nsec; do |
| CPPFLAGS="$ac_save_CPPFLAGS -DST_MTIM_NSEC=$ac_val" |
| AC_TRY_COMPILE([#include <sys/types.h> |
| #include <sys/stat.h> |
| ], [struct stat s; s.ST_MTIM_NSEC;], |
| [ac_cv_struct_st_mtim_nsec=$ac_val; break]) |
| done |
| CPPFLAGS="$ac_save_CPPFLAGS" |
| ]) |
| |
| if test $ac_cv_struct_st_mtim_nsec != no; then |
| AC_DEFINE_UNQUOTED([ST_MTIM_NSEC], [$ac_cv_struct_st_mtim_nsec], |
| [Define if struct stat contains a nanoseconds field]) |
| fi |
| ] |
| ) |
