#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
AC_PREREQ(2.61)
AC_INIT([zeromq],[dev])
AC_CONFIG_AUX_DIR(config)
AM_CONFIG_HEADER(src/platform.hpp)
AM_INIT_AUTOMAKE(AC_PACKAGE_NAME, AC_PACKAGE_VERSION)

AM_PROG_CC_C_O

# Checks for programs.
AC_PROG_CXX
AC_PROG_LIBTOOL

# Checks for libraries.
AC_CHECK_LIB(pthread, pthread_create)

# Host speciffic checks
AC_CANONICAL_HOST

case "${host_os}" in
    *linux*)
        AC_DEFINE(ZMQ_HAVE_LINUX, 1, [Have Linux OS])
        CPPFLAGS="-D_REENTRANT $CPPFLAGS"
        sed < libtool > libtool-2 \
        's/^hardcode_libdir_flag_spec.*$'/'hardcode_libdir_flag_spec=" "/'
        mv libtool-2 libtool
        chmod 755 libtool
        AC_CHECK_LIB(uuid, uuid_generate)
        ;;
    *solaris*)
        AC_DEFINE(ZMQ_HAVE_SOLARIS, 1, [Have Solaris OS])
        AC_CHECK_LIB(socket, main)
        AC_CHECK_LIB(nsl, main)
        AC_CHECK_LIB(rt, main)
        CPPFLAGS="-D_REENTRANT -D_PTHREADS $CPPFLAGS"
        AC_MSG_CHECKING([wheter atomic operations can be used])
        AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
            [[#include <atomic.h>]],
            [[uint32_t value;
              atomic_cas_32 (&value, 0, 0);
              return 0;]])],
            [solaris_has_atomic=yes],
            [solaris_has_atomic=no])
        AC_MSG_RESULT([$solaris_has_atomic])
        # Solaris 8 does not have atomic operations exported to user space.
        if test "x$solaris_has_atomic" = "xno"; then
            AC_DEFINE(ZMQ_FORCE_MUTEXES, 1, [Force to use mutexes])
        fi
        ;;
    *freebsd*)
        AC_DEFINE(ZMQ_HAVE_FREEBSD, 1, [Have FreeBSD OS])
        CPPFLAGS="-D_THREAD_SAFE $CPPFLAGS"
        LIBS="-pthread"
        ;;
    *darwin*)
        AC_DEFINE(ZMQ_HAVE_OSX, 1, [Have DarwinOSX OS])
        LIBS="-pthread"
        ZMQ_EXTRA_CXXFLAGS+="-Wno-uninitialized"
        ;;
    *openbsd*)
        AC_DEFINE(ZMQ_HAVE_OPENBSD, 1, [Have OpenBSD OS])
        CPPFLAGS="-pthread $CPPFLAGS"
        LIBS="-pthread"
        ;;
    *nto-qnx*)
        AC_DEFINE(ZMQ_HAVE_QNXNTO, 1, [Have QNX Neutrino OS])
        CPPFLAGS="-D_THREAD_SAFE $CPPFLAGS"
        AC_CHECK_LIB(socket,main)
        ;;
    *aix*)
        AC_DEFINE(ZMQ_HAVE_AIX, 1, [Have AIX OS])
        if test "x$GXX" = "xyes"; then
          CPPFLAGS="-D_THREAD_SAFE $CPPFLAGS"
        fi
        ;;
    *hpux*)
        AC_DEFINE(ZMQ_HAVE_HPUX, 1, [Have HPUX OS])
        if test "x$GXX" = "xyes"; then
          CPPFLAGS="-D_THREAD_SAFE $CPPFLAGS"
        fi
        AC_CHECK_LIB(rt, main)
        sed < libtool > libtool-2 \
        's/^hardcode_libdir_flag_spec.*$'/'hardcode_libdir_flag_spec=" "/'
        mv libtool-2 libtool
        chmod 755 libtool
        ;;
    *mingw32*)
        AC_DEFINE(ZMQ_HAVE_WINDOWS, 1, [Have Windows OS])
        AC_DEFINE(ZMQ_HAVE_MINGW32, 1, [Have MinGW32])
        AC_CHECK_HEADERS(windows.h)
        LIBS="-lwsock32 -lws2_32 -no-undefined"
        CFLAGS="-std=c99"
        install_man="no"
        ;;
    *)
        AC_MSG_ERROR([Not supported os: $host.])
        ;;
esac

# Check if we are running at sparc harware
AC_MSG_CHECKING([wheter __sparc__ is defined])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
    [[#if defined __sparc__
        //OK we are on sparc
    #else
        error: we are not on sparc
    #endif
    ]])],
        [sparc=yes],
        [sparc=no])

AC_MSG_RESULT([$sparc])
        
if test "x$sparc" = "xyes"; then
    CPPFLAGS="$CPPFLAGS -mcpu=v9"
fi

# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(errno.h arpa/inet.h netinet/tcp.h netinet/in.h stddef.h \
stdlib.h string.h sys/socket.h sys/time.h unistd.h limits.h)

# Check if we have eventfd.h header file.
AC_CHECK_HEADERS(sys/eventfd.h, [AC_DEFINE(ZMQ_HAVE_EVENTFD, 1, [Have eventfd extension.])])

# Check if we have ifaddrs.h header file.
AC_CHECK_HEADERS(ifaddrs.h, [AC_DEFINE(ZMQ_HAVE_IFADDRS, 1, [Have ifaddrs.h header.])])

# Use c++ in subsequent tests
AC_LANG(C++)

# Optional stuff
AC_CHECK_PROG(have_pkg_config, pkg-config, yes, no)

if test "x$have_pkg_config" != "xno"; then
    #  First instance of PKG_CHECK_ has to be executed
    PKG_CHECK_EXISTS([dummy_pkg], [], [])
fi

# Checks for typedefs, structures, and compiler characteristics.
AC_HEADER_STDBOOL
AC_C_CONST
AC_C_INLINE
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_HEADER_TIME
AC_TYPE_UINT32_T
AC_C_VOLATILE

# Substs
stdint="0"
if test "x$HAVE_STDINT_H" = "xyes"; then
    stdint="1"
fi

inttypes="0"
if test "x$HAVE_INTTYPES_H" = "xyes"; then
    inttypes="1"
fi

AC_SUBST(stdint)
AC_SUBST(inttypes)

# Subst ZMQ_EXTRA_CXXFLAGS
AC_SUBST(ZMQ_EXTRA_CXXFLAGS)


# Checks for library functions.
AC_FUNC_MALLOC
AC_TYPE_SIGNAL
AC_CHECK_FUNCS(perror gettimeofday memset socket getifaddrs freeifaddrs)

AC_OUTPUT(Makefile src/Makefile examples/Makefile examples/chat/Makefile)

AC_MSG_RESULT([])
AC_MSG_RESULT([ ******************************************************** ])
AC_MSG_RESULT([                            0MQ     ])
AC_MSG_RESULT([ ******************************************************** ])
AC_MSG_RESULT([  This software is distributed under the terms and ])
AC_MSG_RESULT([  conditions of the LESSER GNU GENERAL PUBLIC LICENSE. ])
AC_MSG_RESULT([  See the file COPYING and COPYING.LESSER for the full ])
AC_MSG_RESULT([  license text. ])
AC_MSG_RESULT([ ******************************************************** ])
AC_MSG_RESULT([])
AC_MSG_RESULT([ 0MQ install dir: $prefix])
AC_MSG_RESULT([])