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dnl -*- mode: m4 -*-
AC_PREREQ(2.52)

AC_INIT(dbus/dbus.h)

AM_INIT_AUTOMAKE(dbus, 0.4)

AM_CONFIG_HEADER(config.h)

# Honor aclocal flags
ACLOCAL="$ACLOCAL $ACLOCAL_FLAGS"

GETTEXT_PACKAGE=dbus-1
AC_SUBST(GETTEXT_PACKAGE)
AC_DEFINE_UNQUOTED(GETTEXT_PACKAGE,"$GETTEXT_PACKAGE",[The name of the gettext domain])

 ## must come before we use the $USE_MAINTAINER_MODE variable later
AM_MAINTAINER_MODE

AC_PROG_CC
AC_PROG_CXX
AC_ISC_POSIX
AC_HEADER_STDC
AM_PROG_LIBTOOL

AC_ARG_ENABLE(qt,      [  --enable-qt      enable Qt-friendly client library],enable_qt=$enableval,enable_qt=auto)
AC_ARG_ENABLE(glib,    [  --enable-glib    enable GLib-friendly client library],enable_glib=$enableval,enable_glib=auto)
AC_ARG_ENABLE(tests,   [  --enable-tests   enable unit test code],enable_tests=$enableval,enable_tests=$USE_MAINTAINER_MODE)
AC_ARG_ENABLE(ansi,    [  --enable-ansi    enable -ansi -pedantic gcc flags],enable_ansi=$enableval,enable_ansi=no)
AC_ARG_ENABLE(verbose-mode, [  --enable-verbose-mode support verbose debug mode],enable_verbose_mode=$enableval,enable_verbose_mode=yes)
AC_ARG_ENABLE(asserts, [  --enable-asserts include assertion checks],enable_asserts=$enableval,enable_asserts=yes)
AC_ARG_ENABLE(gcov, [  --enable-gcov compile with coverage profiling instrumentation (gcc only)],enable_gcov=$enableval,enable_gcov=no)

dnl DBUS_BUILD_TESTS controls unit tests built in to .c files 
dnl and also some stuff in the test/ subdir
AM_CONDITIONAL(DBUS_BUILD_TESTS, test x$enable_tests = xyes)
if test x$enable_tests = xyes; then
    AC_DEFINE(DBUS_BUILD_TESTS,1,[Build test code])
fi

if test x$enable_verbose_mode = xyes; then
    AC_DEFINE(DBUS_ENABLE_VERBOSE_MODE,1,[Support a verbose mode])
fi
if test x$enable_asserts = xno; then
    AC_DEFINE(DBUS_DISABLE_ASSERT,1,[Disable assertion checking])
fi

if test "x$GCC" = "xyes"; then
  changequote(,)dnl
  case " $CFLAGS " in
  *[\ \	]-Wall[\ \	]*) ;;
  *) CFLAGS="$CFLAGS -Wall" ;;
  esac

  case " $CFLAGS " in
  *[\ \	]-Wchar-subscripts[\ \	]*) ;;
  *) CFLAGS="$CFLAGS -Wchar-subscripts" ;;
  esac

  case " $CFLAGS " in
  *[\ \	]-Wmissing-declarations[\ \	]*) ;;
  *) CFLAGS="$CFLAGS -Wmissing-declarations" ;;
  esac

  case " $CFLAGS " in
  *[\ \	]-Wmissing-prototypes[\ \	]*) ;;
  *) CFLAGS="$CFLAGS -Wmissing-prototypes" ;;
  esac

  case " $CFLAGS " in
  *[\ \	]-Wnested-externs[\ \	]*) ;;
  *) CFLAGS="$CFLAGS -Wnested-externs" ;;
  esac

  case " $CFLAGS " in
  *[\ \	]-Wpointer-arith[\ \	]*) ;;
  *) CFLAGS="$CFLAGS -Wpointer-arith" ;;
  esac

  case " $CFLAGS " in
  *[\ \	]-Wcast-align[\ \	]*) ;;
  *) CFLAGS="$CFLAGS -Wcast-align" ;;
  esac

  case " $CFLAGS " in
  *[\ \	]-Wsign-compare[\ \	]*) ;;
  *) CFLAGS="$CFLAGS -Wsign-compare" ;;
  esac

  if test "x$enable_ansi" = "xyes"; then
    case " $CFLAGS " in
    *[\ \	]-ansi[\ \	]*) ;;
    *) CFLAGS="$CFLAGS -ansi" ;;
    esac

    case " $CFLAGS " in
    *[\ \	]-pedantic[\ \	]*) ;;
    *) CFLAGS="$CFLAGS -pedantic" ;;
    esac
  fi
  if test x$enable_gcov = xyes; then
    case " $CFLAGS " in
    *[\ \	]-fprofile-arcs[\ \	]*) ;;
    *) CFLAGS="$CFLAGS -fprofile-arcs" ;;
    esac
    case " $CFLAGS " in
    *[\ \	]-ftest-coverage[\ \	]*) ;;
    *) CFLAGS="$CFLAGS -ftest-coverage" ;;
    esac

    ## remove optimization
    CFLAGS=`echo "$CFLAGS" | sed -e 's/-O[0-9]*//g'`
  fi
  changequote([,])dnl
else
  if test x$enable_gcov = xyes; then
    AC_MSG_ERROR([--enable-gcov can only be used with gcc])
  fi
fi



AC_CHECK_SIZEOF(char)
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(void *)
AC_CHECK_SIZEOF(long long)
AC_CHECK_SIZEOF(__int64)

## byte order
AC_C_BIGENDIAN

AC_CHECK_FUNCS(vsnprintf vasprintf getpwnam_r nanosleep usleep poll)

dnl check for writev header and writev function so we're 
dnl good to go if HAVE_WRITEV gets defined.
AC_CHECK_HEADERS(sys/uio.h, [AC_CHECK_FUNCS(writev)])

dnl check for flavours of varargs macros (test from GLib)
AC_MSG_CHECKING(for ISO C99 varargs macros in C)
AC_TRY_COMPILE([],[
int a(int p1, int p2, int p3);
#define call_a(...) a(1,__VA_ARGS__)
call_a(2,3);
],dbus_have_iso_c_varargs=yes,dbus_have_iso_c_varargs=no)
AC_MSG_RESULT($dbus_have_iso_c_varargs)

AC_MSG_CHECKING(for GNUC varargs macros)
AC_TRY_COMPILE([],[
int a(int p1, int p2, int p3);
#define call_a(params...) a(1,params)
call_a(2,3);
],dbus_have_gnuc_varargs=yes,dbus_have_gnuc_varargs=no)
AC_MSG_RESULT($dbus_have_gnuc_varargs)

dnl Output varargs tests
if test x$dbus_have_iso_c_varargs = xyes; then
    AC_DEFINE(HAVE_ISO_VARARGS,1,[Have ISO C99 varargs macros])
fi
if test x$dbus_have_gnuc_varargs = xyes; then
    AC_DEFINE(HAVE_GNUC_VARARGS,1,[Have GNU-style varargs macros])
fi


DBUS_CLIENT_CFLAGS=
DBUS_CLIENT_LIBS=
AC_SUBST(DBUS_CLIENT_CFLAGS)
AC_SUBST(DBUS_CLIENT_LIBS)

DBUS_BUS_CFLAGS=
DBUS_BUS_LIBS=
AC_SUBST(DBUS_BUS_CFLAGS)
AC_SUBST(DBUS_BUS_LIBS)

DBUS_TEST_CFLAGS=
DBUS_TEST_LIBS=
AC_SUBST(DBUS_TEST_CFLAGS)
AC_SUBST(DBUS_TEST_LIBS)

# Glib detection
PKG_CHECK_MODULES(DBUS_GLIB, glib-2.0, have_glib=yes, have_glib=no)

if test x$have_glib = xno ; then
    AC_MSG_WARN([GLib development libraries not found])
fi

if test x$enable_glib = xyes; then
    if test x$have_glib = xno; then
	AC_MSG_ERROR([GLib explicitly required, and GLib development libraries not found])
    fi
fi

if test x$enable_glib = xno; then
   have_glib=no;
fi

AM_CONDITIONAL(HAVE_GLIB, test x$have_glib = xyes)

dnl GLib flags
AC_SUBST(DBUS_GLIB_CFLAGS)
AC_SUBST(DBUS_GLIB_LIBS)

# Qt detection
have_qt=no
if test -n "$QTDIR" -a -f $QTDIR/include/qglobal.h; then
    have_qt=yes
    DBUS_QT_CXXFLAGS=-I$QTDIR/include
fi

dnl linking to kdecore will give us a bit of help from libtool
kdelibs=`kde-config --install lib --expandvars 2>/dev/null`
if test -z $kdelibs -a -f $kdelibs/libkdecore.la; then
    have_qt=no
else
    DBUS_QT_LIBS=$kdelibs/libkdecore.la
fi

if test x$have_qt = xno ; then
    AC_MSG_WARN([Qt development libraries not found])
fi

if test x$enable_qt = xyes; then
    if test x$have_qt = xno; then
	AC_MSG_ERROR([Qt integration explicitly required, and Qt libraries not found])
    fi
fi

if test x$enable_qt = xno; then
   have_qt=no;
fi

AM_CONDITIONAL(HAVE_QT, test x$have_qt = xyes)

dnl Qt flags
AC_SUBST(DBUS_QT_CXXFLAGS)
AC_SUBST(DBUS_QT_LIBS)

AC_OUTPUT([
Makefile
Doxyfile
dbus/Makefile
glib/Makefile
qt/Makefile
bus/Makefile
test/Makefile
doc/Makefile
dbus-1.0.pc
dbus-glib-1.0.pc
])

dnl ==========================================================================
echo "
                    D-BUS $VERSION
                  ==============

	prefix:                 ${prefix}
	source code location:	${srcdir}
	compiler:		${CC}
	cflags:		        ${CFLAGS}

        Maintainer mode:        ${USE_MAINTAINER_MODE}
        gcc coverage profiling: ${enable_gcov}
        Building unit tests:    ${enable_tests}
        Building verbose mode:  ${enable_verbose_mode}
        Building assertions:    ${enable_asserts}
        Building Qt bindings:   ${have_qt}
        Building GLib bindings: ${have_glib}
"

if test x$enable_tests = xyes; then
        echo "NOTE: building with unit tests increases the size of the installed library"
fi
if test x$enable_gcov = xyes; then
        echo "NOTE: building with coverage profiling is definitely for developers only"
fi
if test x$enable_verbose_mode = xyes; then
        echo "NOTE: building with verbose mode increases library size, but is probably a good idea anyway."
fi
if test x$enable_asserts = xyes; then
        echo "NOTE: building with assertions increases library size, but is probably a good idea anyway."
fi