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configure.ac
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configure.ac
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# SPDX-License-Identifier: BSD-3-Clause
# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
#
# Copyright (c) 2017-2024, Intel Corporation
AC_PREREQ([2.69])
AC_INIT([mptcpd],
[0.12],
[],
[https://github.com/multipath-tcp/mptcpd])
# ---------------------------------------------------------------
# Libtool Based Library Versioning
# ---------------------------------------------------------------
# Source changed: REVISION++
# Interfaces changed: CURRENT++ REVISION=0
# added: CURRENT++ REVISION=0 AGE++
# removed: CURRENT++ REVISION=0 AGE=0
LIB_CURRENT=3
LIB_REVISION=0
LIB_AGE=0
AC_SUBST([LIB_CURRENT])
AC_SUBST([LIB_REVISION])
AC_SUBST([LIB_AGE])
# ---------------------------------------------------------------
dnl Support "--enable-debug=..." configure script command line option.
AX_IS_RELEASE([git-directory])
AX_CHECK_ENABLE_DEBUG([yes])
AM_INIT_AUTOMAKE([1.15 -Wall -Werror -Wno-portability silent-rules std-options check-news])
AM_SILENT_RULES([yes])
LT_INIT([disable-static])
AC_CONFIG_SRCDIR([src/mptcpd.c])
AC_CONFIG_HEADERS([include/mptcpd/private/config.h])
AC_CONFIG_MACRO_DIR([m4])
# ---------------------------------------------------------------
# Checks for programs.
# ---------------------------------------------------------------
AC_PROG_CC
AM_PROG_CC_C_O
AC_PROG_CXX
AM_CONDITIONAL([HAVE_CXX], [test -n "$CXX"])
# Gcov/lcov support
AX_CODE_COVERAGE
# Work around break in AX_CODE_COVERAGE backward compatibility.
AX_ADD_AM_MACRO_STATIC([@CODE_COVERAGE_RULES@])
AC_CONFIG_COMMANDS_PRE([
AC_SUBST([CODE_COVERAGE_RULES])
])
# Check for Doxygen
DX_DOXYGEN_FEATURE(ON)
DX_DOT_FEATURE(ON)
DX_HTML_FEATURE(ON)
DX_CHM_FEATURE(OFF)
DX_CHI_FEATURE(OFF)
DX_MAN_FEATURE(OFF)
DX_RTF_FEATURE(OFF)
DX_XML_FEATURE(OFF)
DX_PDF_FEATURE(OFF)
DX_PS_FEATURE(OFF)
DX_INIT_DOXYGEN([mptcpd], [Doxyfile], [doc])
# Check for pandoc
AC_ARG_VAR([PANDOC],[location of pandoc program])
AC_PATH_PROG([PANDOC], [pandoc])
# Enable pkg-config
PKG_PROG_PKG_CONFIG
# Enable address sanitizer support.
MPTCPD_ADD_ASAN_SUPPORT
# Enable leak sanitizer support.
MPTCPD_ADD_LSAN_SUPPORT
# Enable undefined behavior sanitizer support.
MPTCPD_ADD_UBSAN_SUPPORT
# Allow the user to set the log message destination at compile-time.
# The available destinations correspond to those made available by
# ELL.
AC_ARG_ENABLE([logging],
[AS_HELP_STRING([--enable-logging[=DEST]],
[Enable logging to DEST (journal, stderr, syslog) @<:@default=stderr@:>@])],
[AS_CASE([$enableval],
[journal | stderr | syslog],
[enable_logging=$enableval],
[yes],
[enable_logging=stderr],
[no],
[enable_logging=null],
[AC_MSG_ERROR([invalid logging destination value: $enableval])])],
[enable_logging=stderr])
AC_DEFINE_UNQUOTED([MPTCPD_LOGGER],
[$enable_logging],
[Log message destination.])
AC_SUBST([mptcpd_logger],[$enable_logging])
# Allow the user to choose support for either the upstream or
# multipath-tcp.org kernel.
AC_ARG_WITH([kernel],
[AS_HELP_STRING([--with-kernel[=KERNEL]],
[Support a specific MPTCP capable kernel
(upstream, multipath-tcp.org, auto)
@<:@default=auto@:>@])],
[AS_CASE([$withval],
[upstream | multipath-tcp.org | auto],
[with_kernel=$withval],
[AC_MSG_ERROR([invalid MPTCP capable kernel: $withval])])],
[with_kernel=auto])
# Allow the user to set the default path manager plugin at 'configure-time'.
AC_ARG_WITH([path-manager],
[AS_HELP_STRING([--with-path-manager[=PLUGIN]],
[Set default path manager plugin to PLUGIN (addr_adv, sspi) @<:@default=auto@:>@])],
[AS_CASE([$withval],
[addr_adv | sspi],
[with_path_manager=$withval],
[AC_MSG_ERROR([invalid path manager plugin: $withval])])],
[with_path_manager=auto])
# Systemd unit directory detection and handling.
AC_ARG_WITH([systemdsystemunitdir],
[AS_HELP_STRING([--with-systemdsystemunitdir=DIR],
[Directory for systemd service files])],,
[with_systemdsystemunitdir=auto])
AS_IF([test "x$with_systemdsystemunitdir" = "xyes" -o "x$with_systemdsystemunitdir" = "xauto"],
[def_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)
AS_IF([test "x$def_systemdsystemunitdir" = "x"],
[AS_IF([test "x$with_systemdsystemunitdir" = "xyes"],
[AC_MSG_ERROR([systemd support requested but pkg-config unable to query systemd package])])
with_systemdsystemunitdir=no],
[with_systemdsystemunitdir="$def_systemdsystemunitdir"])])
AS_IF([test "x$with_systemdsystemunitdir" != "xno"],
[AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])
AC_MSG_NOTICE([systemd system unit directory: $with_systemdsystemunitdir])])
AM_CONDITIONAL([HAVE_SYSTEMD], [test "x$with_systemdsystemunitdir" != "xno"])
# Adjust optimization flags depending on debug configuration.
AS_IF([test "x$ax_enable_debug" != "xyes"],
[
dnl Explicitly add compile-time optimization flag since
dnl AX_ENABLE_DEBUG macro disables the autoconf default of
dnl implicitly adding it.
AS_IF([test "x$enable_code_coverage" != "xyes"],
[AX_APPEND_COMPILE_FLAGS([-O2])
AC_LANG_PUSH([C++])
AX_APPEND_COMPILE_FLAGS([-O2])
AC_LANG_POP([C++])
])
dnl AX_CODE_COVERAGE will define NDEBUG on the command line,
dnl equivalent to #define NDEBUG 1, if code coverage is
dnl enabled. Work around old versions of
dnl AX_CHECK_ENABLE_DEBUG() that define NDEBUG in the config
dnl header without a value, resulting in conflicting
dnl definitions. Explicitly set NDEBUG=1 in the config header
dnl to force the definitions to be the same.
AC_DEFINE([NDEBUG], [1])
],
[
dnl Minimal optimization for the debug case. We need this for
dnl _FORTIFY_SOURCE support, too.
AX_APPEND_COMPILE_FLAGS([-Og])
dnl Enable debug optimization for C++ build test, too.
AS_IF([test -n "$CXX"],
[AC_LANG_PUSH([C++])
AX_APPEND_COMPILE_FLAGS([-Og])
AC_LANG_POP([C++])
])
])
dnl Export symbols in the public API from shared libraries.
AM_CONDITIONAL([BUILDING_DLL], [test "x$enable_shared" = xyes])
# ---------------------------------------------------------------
# Checks for libraries.
# ---------------------------------------------------------------
ELL_VERSION=0.30 dnl Minimum required version of ELL.
PKG_CHECK_MODULES([ELL],
[ell >= $ELL_VERSION])
AC_SUBST([ELL_VERSION])
# ---------------------------------------------------------------
# Checks for header files.
# ---------------------------------------------------------------
# @todo mptcpd ships with a copies of the upstream and
# multipath-tcp.org kernel <linux/mptcp.h> header files. Ideally
# it should not. Consider removing them from mptcpd.
MPTCPD_CHECK_LINUX_MPTCP_H
AS_IF([test "x$with_kernel" = "xauto"], [with_kernel=upstream])
AM_CONDITIONAL([HAVE_UPSTREAM_KERNEL],
[test "x$with_kernel" = "xupstream"])
AH_TEMPLATE([HAVE_UPSTREAM_KERNEL],
[Define to 1 if mptcpd should support the upstream kernel.])
AS_IF([test "x$with_kernel" = "xupstream"],
[AC_DEFINE([HAVE_UPSTREAM_KERNEL])
AC_MSG_NOTICE([Building support for upstream kernel.])],
[AC_MSG_NOTICE([Building support for multipath-tcp.org kernel.])])
dnl Set default path manager based on selected kernel as needed.
dnl
dnl The multipath-tcp.org kernel doesn't support the in-kernel path
dnl manager netlink API used by the addr_adv mptcpd plugin. Use the
dnl sspi plugin in that case.
AS_IF([test "x$with_path_manager" = "xauto"],
[AS_IF([test "x$with_kernel" = "xupstream"],
[with_path_manager=addr_adv],
[with_path_manager=sspi])
AC_MSG_NOTICE([Default mptcpd path manager plugin: $with_path_manager.])])
AC_SUBST([mptcpd_default_pm],[$with_path_manager])
# ---------------------------------------------------------------
# Checks for typedefs, structures, and compiler characteristics.
# ---------------------------------------------------------------
AX_APPEND_COMPILE_FLAGS([-fvisibility=hidden])
# ---------------------------------------------------------------
# Checks for library functions.
# ---------------------------------------------------------------
AC_SEARCH_LIBS(
[argp_parse],
[argp],
[],
[AC_MSG_ERROR([library with argp_parse() could not be found])])
AC_SEARCH_LIBS(
[dlopen],
[dl],
[],
[AC_MSG_ERROR([library with dlopen() could not be found])])
mptcpd_save_libs=$LIBS
LIBS="$LIBS $ELL_LIBS"
dnl l_genl_msg_get_extended_error() was introduced in ELL v0.31.
AC_CHECK_FUNC([l_genl_msg_get_extended_error],
[AC_DEFINE([HAVE_L_GENL_MSG_GET_EXTENDED_ERROR],
[],
[ELL has l_genl_msg_get_extended_error()])])
dnl l_hashmap_replace() was introduced in ELL v0.33.
AC_CHECK_FUNC([l_hashmap_replace],
[AC_DEFINE([HAVE_L_HASHMAP_REPLACE],
[],
[ELL has l_hashmap_replace()])])
dnl l_netlink_message_new_sized() was introduced in ELL v0.68.
AC_CHECK_FUNC([l_netlink_message_new_sized],
[AC_DEFINE([HAVE_L_NETLINK_MESSAGE_NEW_SIZED],
[],
[ELL has l_netlink_message_new_sized()])])
LIBS=$mptcpd_save_libs
# ---------------------------------------------------------------
# Enable additional C compiler warnings. We do this after all
# Autoconf tests have been run since not all autoconf macros are
# warning free.
# ---------------------------------------------------------------
AX_CFLAGS_WARN_ALL([CFLAGS])
AX_APPEND_COMPILE_FLAGS([-Wextra -Werror -pedantic])
# ---------------------------------------------------------------
# Enable compile-time defense
# ---------------------------------------------------------------
AC_ARG_ENABLE(stack-protection,
[AS_HELP_STRING([--disable-stack-protection],
[Disable compiler stack protection.
FORTIFY_SOURCE=2 and -fstack-protector-strong]
)],
[],
[enable_stack_protection=yes])
AS_IF([test "x$enable_stack_protection" = "xyes"],
[
# Harden/fortify source
#
# _FORTIFY_SOURCE=2 is the desired level of fortification for
# mptcpd, but we should still avoid overriding user defined
# values, including the case where _FORTIFY_SOURCE is
# implicitly defined under some levels optimization.
#
# Note that _FORTIFY_SOURCE is defined on the preprocessor
# command line instead of in <mptcpd/config.h> since the latter
# is not included in all mptcpd source files, and may also be
# included after C library headers.
AC_CHECK_DEFINE([_FORTIFY_SOURCE],
[],
[AX_APPEND_FLAG([-D_FORTIFY_SOURCE=2], [CPPFLAGS])])
# Stack-based buffer overrun detection
MPTCPD_ADD_COMPILE_FLAG([-fstack-protector-strong],
[# GCC < 4.9
MPTCPD_ADD_COMPILE_FLAG([-fstack-protector])
])
],
[])
# Format string vulnerabilities
# -Wformat=2 implies:
# -Wformat -Wformat-nonliteral -Wformat-security -Wformat-y2k
AX_APPEND_COMPILE_FLAGS([-Wformat=2])
# Position Independent Execution (PIE)
AX_APPEND_COMPILE_FLAGS([-fPIE], [EXECUTABLE_CFLAGS])
AC_SUBST([EXECUTABLE_CFLAGS])
# ---------------------------------------------------------------
# Enable link-time defenses
# ---------------------------------------------------------------
# Stack execution protection
AX_APPEND_LINK_FLAGS([-Wl,-z,noexecstack])
# Data relocation and protection (RELRO)
AX_APPEND_LINK_FLAGS([-Wl,-z,now -Wl,-z,relro])
# Position Independent Execution
AX_APPEND_LINK_FLAGS([-pie], [EXECUTABLE_LDFLAGS])
AC_SUBST([EXECUTABLE_LDFLAGS])
# ---------------------------------------------------------------
# Test plugin names (centrally defined here)
# ---------------------------------------------------------------
AC_SUBST([TEST_PLUGIN_ONE], [plugin_one])
AC_SUBST([TEST_PLUGIN_TWO], [plugin_two])
AC_SUBST([TEST_PLUGIN_THREE], [plugin_three])
AC_SUBST([TEST_PLUGIN_FOUR], [plugin_four])
AC_SUBST([TEST_PLUGIN_NOOP], [plugin_noop])
# ---------------------------------------------------------------
# Generate our build files.
# ---------------------------------------------------------------
AC_CONFIG_FILES([Makefile
etc/Makefile
man/Makefile
include/Makefile
include/linux/Makefile
include/mptcpd/Makefile
lib/Makefile
lib/mptcpd.pc
src/Makefile
plugins/Makefile
plugins/path_managers/Makefile
scripts/Makefile
tests/Makefile
tests/lib/Makefile
tests/plugins/Makefile
tests/plugins/bad/Makefile
tests/plugins/noop/Makefile
tests/plugins/priority/Makefile
tests/plugins/security/Makefile])
AC_OUTPUT