265 lines
7.9 KiB
Text
265 lines
7.9 KiB
Text
# Configure script for c++tools
|
|
# Copyright (C) 2020-2022 Free Software Foundation, Inc.
|
|
# Written by Nathan Sidwell <nathan@acm.org> while at FaceBook
|
|
#
|
|
# This file is free software; you can redistribute it and/or modify it
|
|
# under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful, but
|
|
# WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
# General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; see the file COPYING3. If not see
|
|
# <http://www.gnu.org/licenses/>.
|
|
|
|
# C++ has grown a C++20 mapper server. This may be used to provide
|
|
# and/or learn and/or build required modules. This sample server
|
|
# shows how the protocol introduced by wg21.link/p1184 may be used.
|
|
# By default g++ uses an in-process mapper.
|
|
|
|
sinclude(../config/acx.m4)
|
|
sinclude(../config/ax_lib_socket_nsl.m4)
|
|
|
|
AC_INIT(c++tools)
|
|
|
|
AC_CONFIG_SRCDIR([server.cc])
|
|
|
|
# Determine the noncanonical names used for directories.
|
|
ACX_NONCANONICAL_TARGET
|
|
|
|
AC_CANONICAL_SYSTEM
|
|
AC_PROG_INSTALL
|
|
test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
|
|
AC_SUBST(INSTALL_PROGRAM)
|
|
|
|
AC_PROG_CXX
|
|
MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
|
|
AC_CHECK_PROGS([AUTOCONF], [autoconf], [$MISSING autoconf])
|
|
AC_CHECK_PROGS([AUTOHEADER], [autoheader], [$MISSING autoheader])
|
|
|
|
AC_LANG(C++)
|
|
|
|
dnl Enabled by default
|
|
AC_MSG_CHECKING([whether to build C++ tools])
|
|
AC_ARG_ENABLE(c++-tools,
|
|
[AS_HELP_STRING([--enable-c++-tools],
|
|
[build auxiliary c++ tools])],
|
|
cxx_aux_tools=$enableval,
|
|
cxx_aux_tools=yes)
|
|
|
|
AC_MSG_RESULT($cxx_aux_tools)
|
|
CXX_AUX_TOOLS="$cxx_aux_tools"
|
|
AC_SUBST(CXX_AUX_TOOLS)
|
|
|
|
AC_ARG_ENABLE([maintainer-mode],
|
|
AS_HELP_STRING([--enable-maintainer-mode],
|
|
[enable maintainer mode. Add rules to rebuild configurey bits]),,
|
|
[enable_maintainer_mode=no])
|
|
case "$enable_maintainer_mode" in
|
|
yes) maintainer_mode=yes ;;
|
|
no) maintainer_mode=no ;;
|
|
*) AC_MSG_ERROR([unknown maintainer mode $enable_maintainer_mode]) ;;
|
|
esac
|
|
AC_MSG_CHECKING([maintainer-mode])
|
|
AC_MSG_RESULT([$maintainer_mode])
|
|
test "$maintainer_mode" = yes && MAINTAINER=yes
|
|
AC_SUBST(MAINTAINER)
|
|
|
|
# Handle configuration of checking; for the tools in this directory we
|
|
# default to release checking and stricter checks do not change this.
|
|
|
|
AC_ARG_ENABLE(checking,
|
|
[AS_HELP_STRING([[--enable-checking[=LIST]]],
|
|
[enable expensive run-time checks. With LIST,
|
|
enable only specific categories of checks.
|
|
Categories are: yes,no,all,none,release.])],
|
|
[ac_checking_flags="${enableval}"],[
|
|
# Default to checking.
|
|
ac_checking_flags=yes
|
|
])
|
|
IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
|
|
for check in release $ac_checking_flags
|
|
do
|
|
case $check in
|
|
# these set all the flags to specific states
|
|
yes|all|release|assert) ac_assert_checking=1 ; ;;
|
|
no|none) ac_assert_checking= ; ;;
|
|
*) ;;
|
|
esac
|
|
done
|
|
IFS="$ac_save_IFS"
|
|
|
|
if test x$ac_assert_checking != x ; then
|
|
AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
|
|
[Define if you want assertions enabled. This is a cheap check.])
|
|
fi
|
|
|
|
# Check whether --enable-default-pie was given.
|
|
AC_ARG_ENABLE(default-pie,
|
|
[AS_HELP_STRING([--enable-default-pie],
|
|
[enable Position Independent Executable as default])],
|
|
[PIEFLAG=-fPIE], [PIEFLAG=])
|
|
AC_SUBST([PIEFLAG])
|
|
|
|
# Check if O_CLOEXEC is defined by fcntl
|
|
AC_CACHE_CHECK(for O_CLOEXEC, ac_cv_o_cloexec, [
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
|
|
#include <fcntl.h>]], [[
|
|
return open ("/dev/null", O_RDONLY | O_CLOEXEC);]])],
|
|
[ac_cv_o_cloexec=yes],[ac_cv_o_cloexec=no])])
|
|
if test $ac_cv_o_cloexec = yes; then
|
|
AC_DEFINE(HOST_HAS_O_CLOEXEC, 1,
|
|
[Define if O_CLOEXEC supported by fcntl.])
|
|
fi
|
|
|
|
AC_CHECK_HEADERS(sys/mman.h)
|
|
|
|
# C++ Modules would like some networking features to provide the mapping
|
|
# server. You can still use modules without them though.
|
|
# The following network-related checks could probably do with some
|
|
# Windows and other non-linux defenses and checking.
|
|
|
|
# Local socket connectivity wants AF_UNIX networking
|
|
# Check for AF_UNIX networking
|
|
AC_CACHE_CHECK(for AF_UNIX, ac_cv_af_unix, [
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/un.h>
|
|
#include <netinet/in.h>]],[[
|
|
sockaddr_un un;
|
|
un.sun_family = AF_UNSPEC;
|
|
int fd = socket (AF_UNIX, SOCK_STREAM, 0);
|
|
connect (fd, (sockaddr *)&un, sizeof (un));]])],
|
|
[ac_cv_af_unix=yes],
|
|
[ac_cv_af_unix=no])])
|
|
if test $ac_cv_af_unix = yes; then
|
|
AC_DEFINE(HAVE_AF_UNIX, 1,
|
|
[Define if AF_UNIX supported.])
|
|
fi
|
|
|
|
# Remote socket connectivity wants AF_INET6 networking
|
|
# Check for AF_INET6 networking
|
|
AC_CACHE_CHECK(for AF_INET6, ac_cv_af_inet6, [
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <netdb.h>]],[[
|
|
sockaddr_in6 in6;
|
|
in6.sin6_family = AF_UNSPEC;
|
|
struct addrinfo *addrs = 0;
|
|
struct addrinfo hints;
|
|
hints.ai_flags = 0;
|
|
hints.ai_family = AF_INET6;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_protocol = 0;
|
|
hints.ai_canonname = 0;
|
|
hints.ai_addr = 0;
|
|
hints.ai_next = 0;
|
|
int e = getaddrinfo ("localhost", 0, &hints, &addrs);
|
|
const char *str = gai_strerror (e);
|
|
freeaddrinfo (addrs);
|
|
int fd = socket (AF_INET6, SOCK_STREAM, 0);
|
|
connect (fd, (sockaddr *)&in6, sizeof (in6));]])],
|
|
[ac_cv_af_inet6=yes],
|
|
[ac_cv_af_inet6=no])])
|
|
if test $ac_cv_af_inet6 = yes; then
|
|
AC_DEFINE(HAVE_AF_INET6, 1,
|
|
[Define if AF_INET6 supported.])
|
|
fi
|
|
|
|
# Efficient server response wants epoll
|
|
# Check for epoll_create, epoll_ctl, epoll_pwait
|
|
AC_CACHE_CHECK(for epoll, ac_cv_epoll, [
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
|
|
#include <sys/epoll.h>]],[[
|
|
int fd = epoll_create (1);
|
|
epoll_event ev;
|
|
ev.events = EPOLLIN;
|
|
ev.data.fd = 0;
|
|
epoll_ctl (fd, EPOLL_CTL_ADD, 0, &ev);
|
|
epoll_pwait (fd, 0, 0, -1, 0);]])],
|
|
[ac_cv_epoll=yes],
|
|
[ac_cv_epoll=no])])
|
|
if test $ac_cv_epoll = yes; then
|
|
AC_DEFINE(HAVE_EPOLL, 1,
|
|
[Define if epoll_create, epoll_ctl, epoll_pwait provided.])
|
|
fi
|
|
|
|
# If we can't use epoll, try pselect.
|
|
# Check for pselect
|
|
AC_CACHE_CHECK(for pselect, ac_cv_pselect, [
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
|
|
#include <sys/select.h>]],[[
|
|
pselect (0, 0, 0, 0, 0, 0);]])],
|
|
[ac_cv_pselect=yes],
|
|
[ac_cv_pselect=no])])
|
|
if test $ac_cv_pselect = yes; then
|
|
AC_DEFINE(HAVE_PSELECT, 1,
|
|
[Define if pselect provided.])
|
|
fi
|
|
|
|
# And failing that, use good old select.
|
|
# If we can't even use this, the server is serialized.
|
|
# Check for select
|
|
AC_CACHE_CHECK(for select, ac_cv_select, [
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
|
|
#include <sys/select.h>]],[[
|
|
select (0, 0, 0, 0, 0);]])],
|
|
[ac_cv_select=yes],
|
|
[ac_cv_select=no])])
|
|
if test $ac_cv_select = yes; then
|
|
AC_DEFINE(HAVE_SELECT, 1,
|
|
[Define if select provided.])
|
|
fi
|
|
|
|
# Avoid some fnctl calls by using accept4, when available.
|
|
# Check for accept4
|
|
AC_CACHE_CHECK(for accept4, ac_cv_accept4, [
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
|
|
#include <sys/socket.h>]],[[
|
|
int err = accept4 (1, 0, 0, SOCK_NONBLOCK);]])],
|
|
[ac_cv_accept4=yes],
|
|
[ac_cv_accept4=no])])
|
|
if test $ac_cv_accept4 = yes; then
|
|
AC_DEFINE(HAVE_ACCEPT4, 1,
|
|
[Define if accept4 provided.])
|
|
fi
|
|
|
|
# For better server messages, look for a way to stringize network addresses
|
|
# Check for inet_ntop
|
|
AC_CACHE_CHECK(for inet_ntop, ac_cv_inet_ntop, [
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
|
|
#include <arpa/inet.h>
|
|
#include <netinet/in.h>]],[[
|
|
sockaddr_in6 in6;
|
|
char buf[INET6_ADDRSTRLEN];
|
|
const char *str = inet_ntop (AF_INET6, &in6, buf, sizeof (buf));]])],
|
|
[ac_cv_inet_ntop=yes],
|
|
[ac_cv_inet_ntop=no])])
|
|
if test $ac_cv_inet_ntop = yes; then
|
|
AC_DEFINE(HAVE_INET_NTOP, 1,
|
|
[Define if inet_ntop provided.])
|
|
fi
|
|
|
|
# Determine what GCC version number to use in filesystem paths.
|
|
GCC_BASE_VER
|
|
|
|
# Solaris needs libsocket and libnsl for socket functions before 11.4.
|
|
# libcody uses those.
|
|
save_LIBS="$LIBS"
|
|
LIBS=
|
|
AX_LIB_SOCKET_NSL
|
|
NETLIBS="$LIBS"
|
|
LIBS="$save_LIBS"
|
|
AC_SUBST(NETLIBS)
|
|
|
|
AC_CONFIG_HEADERS([config.h])
|
|
AC_CONFIG_FILES([Makefile])
|
|
|
|
AC_OUTPUT
|