path: root/configure.ac

# This file is part of GNUnet.
# (C) 2001--2013 Christian Grothoff (and other contributing authors)
#
# GNUnet 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 2, or (at your
# option) any later version.
#
# GNUnet 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 GNUnet; see the file COPYING.  If not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#
#
# Process this file with autoconf to produce a configure script.
#
#
AC_PREREQ(2.61)
# Checks for programs.
AC_INIT([gnunet], [0.9.5a],[bug-gnunet@gnu.org])

AC_CANONICAL_TARGET
AC_CANONICAL_HOST
AC_CANONICAL_SYSTEM

AM_INIT_AUTOMAKE([gnunet], [0.9.5a])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
AC_CONFIG_HEADERS([gnunet_config.h])
AH_TOP([#define _GNU_SOURCE  1])

AC_PROG_AWK
AC_PROG_CC
AC_PROG_CPP
AC_PROG_CXX
AC_PROG_OBJC
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AM_PROG_CC_C_O
LT_INIT([disable-static dlopen win32-dll])
LTDL_INIT
AC_SUBST(LTDLINCL)
AC_SUBST(LIBLTDL)
AC_SUBST(MKDIR_P)

# large file support
AC_SYS_LARGEFILE
AC_FUNC_FSEEKO


if test "$enable_shared" = "no"
then
 AC_MSG_ERROR([GNUnet only works with shared libraries. Sorry.])
fi

CFLAGS="-Wall $CFLAGS"
# use '-fno-strict-aliasing', but only if the compiler can take it
if gcc -fno-strict-aliasing -S -o /dev/null -xc /dev/null >/dev/null 2>&1;
then
 CFLAGS="-fno-strict-aliasing $CFLAGS"
fi

# Use Linux interface name unless the OS has a different preference
DEFAULT_INTERFACE="\"eth0\""

funcstocheck="getnameinfo gethostname gethostbyname gethostbyaddr getaddrinfo"

# Srcdir in a form that native compiler understands (i.e. DOS path on W32)
native_srcdir=$srcdir

# Check system type
case "$host_os" in
*darwin* | *rhapsody* | *macosx*)
     AC_DEFINE_UNQUOTED(DARWIN,1,[This is an Apple Darwin system])
     CPPFLAGS="-D_APPLE_C_SOURCE $CPPFLAGS"
     CFLAGS="-no-cpp-precomp -fno-common $CFLAGS"
     AC_MSG_WARN([The VPN application cannot be compiled on your OS])
     build_target="darwin"
     DEFAULT_INTERFACE="\"en0\""
     LIBPREFIX=
     DLLDIR=lib
     UNIXONLY="#"
     ;;
linux*)
     AC_DEFINE_UNQUOTED(LINUX,1,[This is a Linux kernel])
     build_target="linux"
     LIBPREFIX=
     DLLDIR=lib
     UNIXONLY="#"
     AC_PATH_XTRA
     ;;
*freebsd*)
     AC_DEFINE_UNQUOTED(SOMEBSD,1,[This is a BSD system])
     AC_DEFINE_UNQUOTED(FREEBSD,1,[This is a FreeBSD system])
     CFLAGS="-D_THREAD_SAFE $CFLAGS"
     build_target="freebsd"
     LIBPREFIX=
     DLLDIR=lib
     UNIXONLY="#"
     ;;
*openbsd*)
     AC_DEFINE_UNQUOTED(SOMEBSD,1,[This is a BSD system])
     AC_DEFINE_UNQUOTED(OPENBSD,1,[This is an OpenBSD system])
     LIBS=`echo $LIBS | sed -e "s/-ldl//"`
     build_target="openbsd"
     LIBPREFIX=
     DLLDIR=lib
     UNIXONLY="#"
     ;;
*netbsd*)
     AC_DEFINE_UNQUOTED(SOMEBSD,1,[This is a BSD system])
     AC_DEFINE_UNQUOTED(NETBSD,1,[This is a NetBSD system])
     LIBPREFIX=
     DLLDIR=lib
     UNIXONLY="#"
     ;;
*solaris*)
     AC_DEFINE_UNQUOTED(SOLARIS,1,[This is a Solaris system])
     AC_DEFINE_UNQUOTED(_REENTRANT,1,[Need with solaris or errno doesnt work])
     AC_CHECK_LIB(resolv, res_init)
     AC_CHECK_LIB(rt, nanosleep)
     build_target="solaris"
     LIBPREFIX=
     DLLDIR=lib
     UNIXONLY="#"
     ;;
*arm-linux*)
     AC_DEFINE_UNQUOTED(LINUX,1,[This is a Linux kernel])
     CFLAGS="-D_REENTRANT -fPIC -pipe $CFLAGS"
     build_target="linux"
     LIBPREFIX=
     DLLDIR=lib
     UNIXONLY="#"
     ;;
*cygwin*)
     AC_DEFINE_UNQUOTED(CYGWIN,1,[This is a Cygwin system])
     AC_DEFINE_UNQUOTED(WINDOWS,1,[This is a Windows system])
     AC_CHECK_LIB(intl, gettext)
     LDFLAGS="$LDFLAGS -no-undefined"
     CFLAGS="-mms-bitfields $CFLAGS"
     build_target="cygwin"
     LIBPREFIX=lib
     DLLDIR=bin
     AC_PROG_CXX
     UNIXONLY=""
     ;;
*mingw*)
     AC_DEFINE_UNQUOTED(MINGW,1,[This is a MinGW system])
     AC_DEFINE_UNQUOTED(WINDOWS,1,[This is a Windows system])
     AC_DEFINE_UNQUOTED(_WIN32,1,[This is a Windows system])
     AC_CHECK_LIB(intl, gettext)
     LDFLAGS="$LDFLAGS -Wl,-no-undefined -Wl,--export-all-symbols"
     LIBS="$LIBS -lws2_32 -lplibc -lgnurx -lole32"
     CFLAGS="-mms-bitfields $CFLAGS"
     CPPFLAGS="-D_WIN32_WINNT=0x0501 -DHAVE_STAT64=1 $CPPFLAGS"
     build_target="mingw"
     AC_PROG_CXX
     LIBPREFIX=lib
     DLLDIR=bin
     UNIXONLY=""
     funcstocheck=""
     native_srcdir=$(cd $srcdir; pwd -W)
     ;;
gnu*)
     AC_DEFINE_UNQUOTED(GNU,1,[This is a GNU system])
     build_target="gnu"
     UNIXONLY="#"
     ;;
*)
     AC_MSG_RESULT(Unrecognised OS $host_os)
     AC_DEFINE_UNQUOTED(OTHEROS,1,[Some strange OS])
     UNIXONLY=""
;;
esac
AC_DEFINE_UNQUOTED([GNUNET_DEFAULT_INTERFACE], $DEFAULT_INTERFACE, [This should be the default choice for the name of the first network interface])
AC_SUBST(DEFAULT_INTERFACE)

# Disable TCP-based IPC on systems that support UNIX domain
# sockets in default configuratin:
AC_SUBST(UNIXONLY)


AC_MSG_CHECKING([for build target])
AM_CONDITIONAL(DARWIN,  test "$build_target" = "darwin")
AM_CONDITIONAL(CYGWIN,  test "$build_target" = "cygwin")
AM_CONDITIONAL(MINGW,   test "$build_target" = "mingw")
AM_CONDITIONAL(SOLARIS, test "$build_target" = "solaris")
AM_CONDITIONAL(XFREEBSD, test "$build_target" = "freebsd")
AM_CONDITIONAL(OPENBSD, test "$build_target" = "openbsd")
AM_CONDITIONAL(LINUX, test "$build_target" = "linux")
AM_CONDITIONAL(GNU, test "$build_target" = "gnu")

AC_MSG_RESULT([$build_target])
AC_SUBST(build_target)
AM_CONDITIONAL([am__fastdepOBJC], false)
AC_UNALIGNED_64_ACCESS

# some other checks for standard libs
AC_SEARCH_LIBS([gethostbyname], [nsl ws2_32])
AC_CHECK_LIB(socket, socket)
AC_CHECK_LIB(m, log)
AC_CHECK_LIB(c, getloadavg, AC_DEFINE(HAVE_GETLOADAVG,1,[getloadavg supported]))

# 'save' libs; only those libs found so far will be
# linked against _everywhere_.  For the others, we
# will be more selective!
SAVE_LIBS=$LIBS

# libgnurx (regex library for W32)
gnurx=0
AC_CHECK_LIB(gnurx, regexec, gnurx=1)
if test "x$gnurx" = "x0" -a "x$build_target" = "xmingw"
then
  AC_MSG_ERROR([on W32 GNUnet needs libgnurx])
fi

# libgcrypt
gcrypt=0
NEED_LIBGCRYPT_API=1
NEED_LIBGCRYPT_VERSION=1.4.2


AM_PATH_LIBGCRYPT("$NEED_LIBGCRYPT_API:$NEED_LIBGCRYPT_VERSION", gcrypt=1)
AC_CHECK_DECLS([gcry_mpi_lshift], [], [], [[#include <gcrypt.h>]])

if test $gcrypt = 0
then
  AC_MSG_ERROR([[
***
*** You need libgcrypt to build this program.
**  This library is for example available at
***   ftp://ftp.gnupg.org/gcrypt/libgcrypt/
*** (at least version $NEED_LIBGCRYPT_VERSION (API $NEED_LIBGCRYPT_API) 
***  is required.)
***]])
fi
AC_DEFINE_UNQUOTED([NEED_LIBGCRYPT_VERSION], "$NEED_LIBGCRYPT_VERSION", [required libgcrypt version])

# Adam shostack suggests the following for Windows:
# -D_FORTIFY_SOURCE=2 -fstack-protector-all
AC_ARG_ENABLE(gcc-hardening,
   AS_HELP_STRING(--enable-gcc-hardening, enable compiler security checks),
[if test x$enableval = xyes; then
    CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2 -fstack-protector-all"
    CFLAGS="$CFLAGS -fwrapv -fPIE -Wstack-protector"
    CFLAGS="$CFLAGS --param ssp-buffer-size=1"
    LDFLAGS="$LDFLAGS -pie"
fi])


# Linker hardening options
# Currently these options are ELF specific - you can't use this with MacOSX
AC_ARG_ENABLE(linker-hardening,
  AS_HELP_STRING(--enable-linker-hardening, enable linker security fixups),
[if test x$enableval = xyes; then
   LDFLAGS="$LDFLAGS -z relro -z now"
fi])


extra_logging=GNUNET_NO
AC_ARG_ENABLE([l