mutter/configure.ac

# clutter package version number, (as distinct from shared library version)
# An odd micro number indicates in-progress development from Git
# An even micro number indicates a released version
#
# Making a point release:
# - increase clutter_micro_version to the next even number
# - increase clutter_interface_age to the next even number
# After the release:
# - increase clutter_micro_version to the next odd number
# - increase clutter_interface_version to the next odd number
m4_define([clutter_major_version], [1])
m4_define([clutter_minor_version], [7])
m4_define([clutter_micro_version], [1])

# • for stable releases: increase the interface age by 1 for each release;
#   if the API changes, set to 0. interface_age and binary_age are used to
#   create the soname of the shared object:
#
#  (<minor> * 100 + <micro>) - <interface_age>
#
# this allows using the same soname for different micro-releases in case
# no API was added or deprecated. for instance:
#
#   clutter 1.2.0  -> 100 * 2 + 0  = 200, interface age = 0 -> 200
#   clutter 1.2.2  -> 100 * 2 + 2  = 202, interface age = 2 -> 200
#   clutter 1.2.4  -> 100 * 2 + 4  = 204, interface age = 4 -> 200
#   [ API addition, deprecation ]
#   clutter 1.2.6  -> 100 * 2 + 6  = 206, interface age = 0 -> 206
#   clutter 1.2.8  -> 100 * 2 + 8  = 208, interface age = 2 -> 206
#   clutter 1.2.10 -> 100 * 2 + 10 = 210, interface age = 4 -> 206
#   ...
#
# • for development releases: keep clutter_interface_age to 0
m4_define([clutter_interface_age], [0])

m4_define([clutter_binary_age], [m4_eval(100 * clutter_minor_version + clutter_micro_version)])

m4_define([clutter_release_status],
          [m4_if(m4_eval(clutter_micro_version % 2), [1], [git],
                 [m4_if(m4_eval(clutter_minor_version % 2), [1], [snapshot],
                                                                 [release])])])

m4_define([clutter_version], [clutter_major_version.clutter_minor_version.clutter_micro_version])

# change this only when breaking the API
m4_define([clutter_api_version], [1.0])

AC_PREREQ([2.63])

AC_INIT([clutter],
        [clutter_version],
        [http://bugzilla.gnome.org/enter_bug.cgi?product=clutter],
        [clutter],
        [http://www.clutter-project.org])

AC_CONFIG_SRCDIR([clutter/clutter.h])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_AUX_DIR([build])
AC_CONFIG_MACRO_DIR([build/autotools])

AM_INIT_AUTOMAKE([1.11 foreign -Wno-portability no-define no-dist-gzip dist-bzip2])

AM_SILENT_RULES([yes])

AC_SUBST([CLUTTER_MAJOR_VERSION],  [clutter_major_version])
AC_SUBST([CLUTTER_MINOR_VERSION],  [clutter_minor_version])
AC_SUBST([CLUTTER_MICRO_VERSION],  [clutter_micro_version])
AC_SUBST([CLUTTER_VERSION],        [clutter_version])
AC_SUBST([CLUTTER_API_VERSION],    [clutter_api_version])
AC_SUBST([CLUTTER_API_VERSION_AM], [$CLUTTER_MAJOR_VERSION\_0])
AC_SUBST([CLUTTER_RELEASE_STATUS], [clutter_release_status])

m4_define([lt_current],  [m4_eval(100 * clutter_minor_version + clutter_micro_version - clutter_interface_age)])
m4_define([lt_revision], [clutter_interface_age])
m4_define([lt_age],      [m4_eval(clutter_binary_age - clutter_interface_age)])
CLUTTER_LT_CURRENT=lt_current
CLUTTER_LT_REV=lt_revision
CLUTTER_LT_AGE=lt_age
CLUTTER_LT_VERSION="$CLUTTER_LT_CURRENT:$CLUTTER_LT_REV:$CLUTTER_LT_AGE"
CLUTTER_LT_LDFLAGS="-version-info $CLUTTER_LT_VERSION"

AC_PROG_SED

AC_CANONICAL_HOST
AC_MSG_CHECKING([if building for some Win32 platform])
AS_CASE([$host],
        [*-*-mingw*|*-*-cygwin*],
        [
          CLUTTER_LT_LDFLAGS="$CLUTTER_LT_LDFLAGS -no-undefined"
          platform_win32=yes
        ],

        [platform_win32=no]
)
AC_MSG_RESULT([$platform_win32])
AM_CONDITIONAL(OS_WIN32, [test "$platform_win32" = "yes"])

AC_SUBST(CLUTTER_LT_VERSION)
AC_SUBST(CLUTTER_LT_LDFLAGS)

dnl The 'ffs' function is part of C99 so it isn't always
dnl available. Cogl has a fallback if needed.
AC_CHECK_FUNCS([ffs])

dnl ========================================================================

# Checks for programs.
AM_PROG_CC_C_O

# require libtool >= 2.2
LT_PREREQ([2.2.6])
LT_INIT([disable-static])

# Checks for header files.
AC_HEADER_STDC

# required versions for dependencies
m4_define([glib_req_version],           [2.26.0])
m4_define([cogl_req_version],           [1.6.0])
m4_define([json_glib_req_version],      [0.12.0])
m4_define([atk_req_version],            [1.17])
m4_define([cairo_req_version],          [1.10])
m4_define([pango_req_version],          [1.20])
m4_define([gi_req_version],             [0.9.5])
m4_define([uprof_req_version],          [0.3])
m4_define([gtk_doc_req_version],        [1.13])
m4_define([xfixes_req_version],         [3])
m4_define([xcomposite_req_version],     [0.4])

AC_SUBST([GLIB_REQ_VERSION], [glib_req_version])
AC_SUBST([COGL_REQ_VERSION], [cogl_req_version])
AC_SUBST([JSON_GLIB_REQ_VERSION], [json_glib_req_version])
AC_SUBST([ATK_REQ_VERSION], [atk_req_version])
AC_SUBST([CAIRO_REQ_VERSION], [cairo_req_version])
AC_SUBST([PANGO_REQ_VERSION], [pango_req_version])
AC_SUBST([GI_REQ_VERSION], [gi_req_version])
AC_SUBST([UPROF_REQ_VERSION], [uprof_req_version])
AC_SUBST([GTK_DOC_REQ_VERSION], [gtk_doc_req_version])
AC_SUBST([XFIXES_REQ_VERSION], [xfixes_req_version])
AC_SUBST([XCOMPOSITE_REQ_VERSION], [xcomposite_req_version])

# Checks for typedefs, structures, and compiler characteristics.
AM_PATH_GLIB_2_0([glib_req_version],
                 [],
                 [AC_MSG_ERROR([glib-2.0 is required])],
                 [gobject gthread gmodule-no-export])

# Check for -Bsymbolic-functions to avoid intra-library PLT jumps
AC_ARG_ENABLE([Bsymbolic],
              [AC_HELP_STRING([--disable-Bsymbolic],
                              [Avoid linking with -Bsymbolic])],
              [],
              [
                saved_LDFLAGS="${LDFLAGS}"
                AC_MSG_CHECKING([for -Bsymbolic-functions linker flag])
                LDFLAGS=-Wl,-Bsymbolic-functions
                AC_TRY_LINK([], [int main (void) { return 0; }],
                            [
                              AC_MSG_RESULT([yes])
                              enable_Bsymbolic=yes
                            ],
                            [
                              AC_MSG_RESULT([no])
                              enable_Bsymbolic=no
                            ])
                LDFLAGS="${saved_LDFLAGS}"
              ])

AS_IF([test "x$enable_Bsymbolic" = "xyes"], [CLUTTER_LINK_FLAGS=-Wl[,]-Bsymbolic-functions])
AC_SUBST(CLUTTER_LINK_FLAGS)

dnl ========================================================================

# defaults
CLUTTER_FLAVOUR=glx
FLAVOUR_LIBS=""
FLAVOUR_CFLAGS=""
CLUTTER_WINSYS_BASE=
CLUTTER_WINSYS_BASE_LIB=
CLUTTER_WINSYS=
glesversion=1.1
use_gles2_wrapper=no
experimental_backend=no
experimental_image=no

AC_ARG_WITH([flavour],
            [AC_HELP_STRING([--with-flavour=@<:@glx/opengl-egl-xlib/wayland/eglx/eglnative/osx/win32/cex100@:>@],
                            [Select the Clutter window system backend])],
            [CLUTTER_FLAVOUR=$with_flavour])

AC_ARG_WITH([gles],
            [AC_HELP_STRING([--with-gles=@<:@1.1/2.0@:>@],
                            [Select Clutter GLES version (for EGL backends)])],
            [glesversion=$with_gles])

# base dependencies for core
CLUTTER_BASE_PC_FILES="cogl-1.0 >= $COGL_REQ_VERSION cairo-gobject >= $CAIRO_REQ_VERSION atk >= $ATK_REQ_VERSION pangocairo >= $PANGO_REQ_VERSION json-glib-1.0 >= $JSON_GLIB_REQ_VERSION"

# backend specific pkg-config files
BACKEND_PC_FILES=""

dnl === Clutter windowing system backend ======================================

AS_CASE([$CLUTTER_FLAVOUR],

        [glx],
        [
          CLUTTER_STAGE_TYPE="CLUTTER_TYPE_STAGE_GLX"

          SUPPORT_X11=1
          SUPPORT_XLIB=1
          SUPPORT_GLX=1

          CLUTTER_WINSYS=glx
          CLUTTER_WINSYS_BASE=x11
          CLUTTER_WINSYS_BASE_LIB="x11/libclutter-x11.la"
          CLUTTER_SONAME_INFIX=glx

          # Mesa 7.3 added a GL pkg-config file, finally
          PKG_CHECK_EXISTS([gl],
                           [BACKEND_PC_FILES="$BACKEND_PC_FILES gl"],
                           # if a pkg-config file isn't found just add -lGL
                           # and hope for the best.
                           [FLAVOUR_LIBS="$FLAVOUR_LIBS -lGL"])

          # We might fall back to DRM for sync-to-vblank on GLX
          PKG_CHECK_EXISTS([libdrm],
                           [
                             AC_DEFINE([HAVE_DRM], [1], [Have libdrm support])
                             BACKEND_PC_FILES="$BACKEND_PC_FILES libdrm"
                           ],
                           [])
        ],

        [opengl-egl-xlib],
        [
          CLUTTER_STAGE_TYPE="CLUTTER_TYPE_STAGE_EGL"
          CLUTTER_EGL_BACKEND="generic"

          SUPPORT_X11=1
          SUPPORT_XLIB=1
          SUPPORT_EGL=1
          SUPPORT_EGL_PLATFORM_POWERVR_X11=1

          CLUTTER_WINSYS=egl
          CLUTTER_WINSYS_BASE=x11
          CLUTTER_WINSYS_BASE_LIB="x11/libclutter-x11.la"
          # I think this winsys can be API and ABI compatible with the
          # glx flavour so we can also be cheeky and use the same soname
          CLUTTER_SONAME_INFIX=glx

          PKG_CHECK_EXISTS([gl], [BACKEND_PC_FILES="$BACKEND_PC_FILES gl"], [])
          PKG_CHECK_EXISTS([egl], [BACKEND_PC_FILES="$BACKEND_PC_FILES egl"], [])
        ],

        [wayland],
        [
          experimental_backend="yes"
          CLUTTER_STAGE_TYPE="CLUTTER_TYPE_STAGE_WAYLAND"

          SUPPORT_WAYLAND=1

          CLUTTER_WINSYS=wayland
          CLUTTER_SONAME_INFIX=wayland

          PKG_CHECK_EXISTS([gl], [BACKEND_PC_FILES="$BACKEND_PC_FILES gl"], [])
          PKG_CHECK_EXISTS([egl], [BACKEND_PC_FILES="$BACKEND_PC_FILES egl"], [])
          PKG_CHECK_EXISTS([wayland-client xkbcommon],
			   [BACKEND_PC_FILES="$BACKEND_PC_FILES wayland-client xkbcommon"], [])
        ],

        [eglx],
        [
          CLUTTER_STAGE_TYPE="CLUTTER_TYPE_STAGE_EGL"
          CLUTTER_EGL_BACKEND="generic"

          SUPPORT_X11=1
          SUPPORT_XLIB=1
          SUPPORT_EGL=1
          SUPPORT_EGL_PLATFORM_POWERVR_X11=1

          CLUTTER_WINSYS=egl
          CLUTTER_WINSYS_BASE=x11
          CLUTTER_WINSYS_BASE_LIB="x11/libclutter-x11.la"
          CLUTTER_SONAME_INFIX=eglx
        ],

        [eglnative],
        [
          CLUTTER_STAGE_TYPE="CLUTTER_TYPE_STAGE_EGL"
          CLUTTER_EGL_BACKEND="generic"

          SUPPORT_EGL=1
          SUPPORT_EGL_PLATFORM_POWERVR_NULL=1

          PKG_CHECK_MODULES(TSLIB, [tslib-1.0], [have_tslib=yes], [have_tslib=no])
          AS_IF([test "x$have_tslib" = "xyes"],
                [AC_DEFINE([HAVE_TSLIB], [1], [Have tslib for touchscreen handling])]
          )

          # evdev
          PKG_CHECK_MODULES(EVDEV, [gudev-1.0 xkbcommon],
                            [have_evdev=yes], [have_evdev=no])
          AS_IF([test "x$have_evdev" = "xyes"],
                [AC_DEFINE([HAVE_EVDEV], 1,
                           [Have evdev support for input handling])]
          )

          # Make sure we don't enable tslib and evdev at the same time, we
          # don't support multiple event backends yet.
          AS_IF([test "x$have_tslib" = "xyes" -a "x$have_evdev" = "xyes"],
                [AC_MSG_ERROR([Can't enable both tslib and evdev events])])

          FLAVOUR_LIBS="$FLAVOUR_LIBS $TSLIB_LIBS $EVDEV_LIBS"
          FLAVOUR_CFLAGS="$FLAVOUR_CFLAGS $TSLIB_CFLAGS $EVDEV_CFLAGS"

          CLUTTER_WINSYS=egl
          CLUTTER_SONAME_INFIX=eglnative
        ],

        [cex100],
        [
          CLUTTER_STAGE_TYPE="CLUTTER_TYPE_STAGE_EGL"
          CLUTTER_EGL_BACKEND="cex100"

          SUPPORT_EGL=1
          SUPPORT_EGL_PLATFORM_GDL=1

          # The cex100 is a small specialization of the EGL backend
          CLUTTER_WINSYS=egl
          CLUTTER_SONAME_INFIX=cex100

          found_gdl=no
          AC_CHECK_HEADERS([libgdl.h], [found_gdl=yes])
          AS_IF([test "x$found_gdl" = "xno"],
                [AC_CHECK_HEADERS([CE4100/libgdl.h],
                                  [
                                    FLAVOUR_CFLAGS="-I/usr/include/CE4100"
                                    found_gdl=yes
                                    CLUTTER_CEX100_LIBGDL_PREFIX=CE4100/
                                  ])
                ])
          AC_SUBST(CLUTTER_CEX100_LIBGDL_PREFIX)

          AS_IF([test x"$found_gdl" = "xno"], [AC_MSG_ERROR([libgdl.h not found])])

          # evdev
          PKG_CHECK_MODULES(EVDEV, [gudev-1.0 xkbcommon],
                            [have_evdev=yes], [have_evdev=no])
          AS_IF([test "x$have_evdev" = "xyes"],
                [AC_DEFINE([HAVE_EVDEV], 1,
                           [Have evdev support for input handling])]
          )

          FLAVOUR_CFLAGS="$FLAVOUR_CFLAGS $EVDEV_CFLAGS"
          FLAVOUR_LIBS="$FLAVOUR_LIBS -lgdl $EVDEV_LIBS"
        ],

        [osx],
        [
          experimental_backend="yes"
          CLUTTER_STAGE_TYPE="CLUTTER_TYPE_STAGE_OSX"

          AC_DEFINE([HAVE_CLUTTER_OSX], [1], [Have the OSX backend])

          FLAVOUR_LIBS="$FLAVOUR_LIBS -framework Cocoa -framework OpenGL"

          CLUTTER_WINSYS=osx
          CLUTTER_SONAME_INFIX=osx
        ],

        [win32],
        [
          CLUTTER_STAGE_TYPE="CLUTTER_TYPE_STAGE_WIN32"
          AC_DEFINE([HAVE_CLUTTER_WIN32], [1], [Have the Win32 backend])

          FLAVOUR_LIBS="$FLAVOUR_LIBS -lopengl32 -lgdi32 -lwinmm"
          FLAVOUR_CFLAGS="$FLAVOUR_CFLAGS -D_WIN32_WINNT=0x0500"

          AC_CHECK_TOOL(WINDRES, windres, no)
          if test "$WINDRES" = no; then
             AC_MSG_ERROR([*** windres is required])
          fi

          CLUTTER_WINSYS=win32
          CLUTTER_SONAME_INFIX=win32
        ],

        [AC_MSG_ERROR([Invalid backend for Clutter: use glx, osx,
                      win32, eglx or eglnative])]
)

AS_IF([test "x$SUPPORT_GLX" = "x1"],
      [
        AC_DEFINE([HAVE_CLUTTER_GLX], [1], [Have the GLX backend])

        AC_CHECK_HEADERS([GL/glx.h],
                         [],
                         [AC_MSG_ERROR([Unable to locate required GLX headers])])

        AC_CHECK_LIB(GL, [glXCreateContext],
                     [HAVE_LIBGLX=yes],
                     [AC_MSG_ERROR([Required GLX library not found])])
      ])

AS_IF([test "x$SUPPORT_WAYLAND" = "x1"],
      [
        AC_DEFINE([HAVE_CLUTTER_WAYLAND], [1], [Have the Wayland backend])
      ])

AS_IF([test "x$SUPPORT_EGL" = "x1"],
      [
        AC_DEFINE([HAVE_CLUTTER_EGL], [1], [Have the EGL backend])
      ])

AS_IF([test "x$CLUTTER_EGL_BACKEND" = "xgeneric"],
      AC_DEFINE([CLUTTER_EGL_BACKEND_GENERIC], [1], [Use Generic EGL backend]))

AS_IF([test "x$CLUTTER_EGL_BACKEND" = "xcex100"],
      AC_DEFINE([CLUTTER_EGL_BACKEND_CEX100], [1], [Use CEX100 EGL backend]))

# winsys conditionals for use in automake files...
AM_CONDITIONAL(SUPPORT_GLX, [test "x$SUPPORT_GLX" = "x1"])
AM_CONDITIONAL(SUPPORT_X11, [test "x$SUPPORT_X11" = "x1"])
AM_CONDITIONAL(SUPPORT_XLIB, [test "x$SUPPORT_XLIB" = "x1"])
AM_CONDITIONAL(SUPPORT_EGL, [test "x$SUPPORT_EGL" = "x1"])
AM_CONDITIONAL(SUPPORT_OSX, [test "x$CLUTTER_WINSYS" = "xosx"])
AM_CONDITIONAL(SUPPORT_WIN32, [test "x$CLUTTER_WINSYS" = "xwin32"])
AM_CONDITIONAL(SUPPORT_CEX100, [test "x$SUPPORT_EGL_PLATFORM_GDL" = "x1"])
AM_CONDITIONAL(SUPPORT_WAYLAND, [test "x$CLUTTER_WINSYS" = "xwayland"])
AM_CONDITIONAL(SUPPORT_STUB, [test "x$CLUTTER_WINSYS" = "xwin32" -o \
			      "x$CLUTTER_WINSYS" = "xosx" -o \
			      "x$CLUTTER_WINSYS" = "xwayland"])

AM_CONDITIONAL(USE_TSLIB, [test "x$have_tslib" = "xyes"])
AM_CONDITIONAL(SUPPORT_EVDEV, [test "x$have_evdev" = "xyes"])

dnl Instead of using AM_CFLAGS to ensure
dnl COGL_ENABLE_EXPERIMENTAL_2_0_API is defined while compiling clutter
dnl and cogl code we use a define in config.h instead. This helps ensure
dnl other tools such as glib-mkenums and gir-scanner don't end up
dnl using the define also.
AC_DEFINE([COGL_ENABLE_EXPERIMENTAL_2_0_API], [1],
          [Can use Cogl 2.0 API internally])

dnl === Clutter configuration =================================================

CLUTTER_CONFIG_DEFINES=

# windowing systems
AS_IF([test "x$SUPPORT_XLIB" = "x1"],
      [CLUTTER_CONFIG_DEFINES="$CLUTTER_CONFIG_DEFINES
#define CLUTTER_WINDOWING_X11 1"])
AS_IF([test "x$SUPPORT_GLX" = "x1"],
      [CLUTTER_CONFIG_DEFINES="$CLUTTER_CONFIG_DEFINES
#define CLUTTER_WINDOWING_GLX 1"])
AS_IF([test "x$SUPPORT_EGL" = "x1"],
      [CLUTTER_CONFIG_DEFINES="$CLUTTER_CONFIG_DEFINES
#define CLUTTER_WINDOWING_EGL 1"])
AS_IF([test "x$CLUTTER_WINSYS" = "xwayland"],
      [CLUTTER_CONFIG_DEFINES="$CLUTTER_CONFIG_DEFINES
#define CLUTTER_WINDOWING_WAYLAND 1"])
AS_IF([test "x$CLUTTER_WINSYS" = "xosx"],
      [CLUTTER_CONFIG_DEFINES="$CLUTTER_CONFIG_DEFINES
#define CLUTTER_WINDOWING_OSX 1"])
AS_IF([test "x$CLUTTER_WINSYS" = "xwin32"],
      [CLUTTER_CONFIG_DEFINES="$CLUTTER_CONFIG_DEFINES
#define CLUTTER_WINDOWING_WIN32 1"])
AS_IF([test "x$SUPPORT_EGL_PLATFORM_GDL" = "x1"],
      [CLUTTER_CONFIG_DEFINES="$CLUTTER_CONFIG_DEFINES
#define CLUTTER_WINDOWING_CEX100 1"])

AC_SUBST([CLUTTER_CONFIG_DEFINES])

dnl === Clutter substitutions =================================================
# Eventually the idea of a winsys should be hidden from Clutter and moved
# into Cogl, but for now we have CLUTTER_WINSYS...
AC_SUBST([CLUTTER_WINSYS])
# The same goes for the winsys-base...
AC_SUBST([CLUTTER_WINSYS_BASE])
AC_SUBST([CLUTTER_WINSYS_BASE_LIB])
AC_SUBST(CLUTTER_STAGE_TYPE)
AC_SUBST(CLUTTER_SONAME_INFIX)

CLUTTER_WINSYS_LIB=libclutter-$CLUTTER_SONAME_INFIX-$CLUTTER_API_VERSION.la
AC_SUBST([CLUTTER_WINSYS_LIB])

dnl === Clutter substitutions kept for backwards compatibility ================
AC_SUBST([CLUTTER_FLAVOUR])
CLUTTER_COGL=undefined
AC_SUBST([CLUTTER_COGL])

dnl === Image loading backend =================================================
IMAGE_PC_FILES=""

dnl === X11 checks, only for X11-based backends ===============================
X11_PC_FILES=""
x11_tests=no

AS_IF([test "x$SUPPORT_XLIB" = "x1"],
      [
        # base X11 includes and libraries
        AC_MSG_CHECKING([for X11])

        # start with pkg-config
        PKG_CHECK_EXISTS([x11], [have_x11=yes], [have_x11=no])
        AS_IF([test "x$have_x11" = "xyes"],
              [
                X11_PC_FILES="x11"

                # we actually need to ask for CFLAGS and LIBS
                X11_CFLAGS=`$PKG_CONFIG --cflags $X11_PC_FILES`
                X11_LIBS=`$PKG_CONFIG --libs $X11_PC_FILES`

                AC_MSG_RESULT([found])
              ],
              [
                # no pkg-config, let's go old school
                AC_PATH_X

                AS_IF([test "x$no_x" = "xyes"],
                      [AC_MSG_ERROR([No X11 Libraries found])],
                      [
                        AS_IF([test "x$x_includes" != "xNONE" && test -n "$x_includes"],
                              [X11_CFLAGS=-I`echo $x_includes | sed -e "s/:/ -I/g"`])

                        AS_IF([test "x$x_libraries" != "xNONE" && test -n "$x_libraries"],
                              [X11_LIBS=-L`echo $x_libraries | sed -e "s/:/ -L/g"`])

                        AC_MSG_RESULT([found])
                      ]
                )
              ]
        )

        # XEXT (required)
        AC_MSG_CHECKING([for XEXT extension])
        PKG_CHECK_EXISTS([xext], [have_xext=yes], [have_xext=no])
        AS_IF([test "x$have_xext" = "xyes"],
              [
                AC_DEFINE(HAVE_XEXT, [1], [Define to 1 if we have the XEXT X extension])

                X11_LIBS="$X11_LIBS -lXext"
                X11_PC_FILES="$X11_PC_FILES xext"

                AC_MSG_RESULT([found])
              ],
              [AC_MSG_ERROR([Not found])]
        )

        # XFIXES (required)
        AC_MSG_CHECKING([for XFIXES extension >= $XFIXES_REQ_VERSION])
        PKG_CHECK_EXISTS([xfixes >= $XFIXES_REQ_VERSION], [have_xfixes=yes], [have_xfixes=no])
        AS_IF([test "x$have_xfixes" = "xyes"],
              [
                AC_DEFINE(HAVE_XFIXES, [1], [Define to 1 if we have the XFIXES X extension])

                X11_LIBS="$X11_LIBS -lXfixes"
                X11_PC_FILES="$X11_PC_FILES xfixes >= $XFIXES_REQ_VERSION"

                AC_MSG_RESULT([found])
              ],
              [AC_MSG_ERROR([Not found])]
        )

        # XDAMAGE (required)
        AC_MSG_CHECKING([for XDAMAGE extension])
        PKG_CHECK_EXISTS([xdamage], [have_xdamage=yes], [have_xdamage=no])
        AS_IF([test "x$have_xdamage" = "xyes"],
              [
                AC_DEFINE(HAVE_XDAMAGE, [1], [Define to 1 if we have the XDAMAGE X extension])

                X11_LIBS="$X11_LIBS -lXdamage"
                X11_PC_FILES="$X11_PC_FILES xdamage"

                AC_MSG_RESULT([found])
              ],
              [AC_MSG_ERROR([not found])]
        )

        # XCOMPOSITE (optional)
        AC_MSG_CHECKING([for XCOMPOSITE extension >= $XCOMPOSITE_REQ_VERSION])
        PKG_CHECK_EXISTS([xcomposite >= $XCOMPOSITE_REQ_VERSION], [have_xcomposite=yes], [have_xcomposite=no])
        AS_IF([test "x$have_xcomposite" = "xyes"],
              [
                AC_DEFINE(HAVE_XCOMPOSITE, [1], [Define to 1 if we have the XCOMPOSITE X extension])

                X11_LIBS="$X11_LIBS -lXcomposite"
                X11_PC_FILES="$X11_PC_FILES xcomposite >= $XCOMPOSITE_REQ_VERSION"

                AC_MSG_RESULT([found])
              ],
              [AC_MSG_ERROR([not found])]
        )

        # XI (optional)
        AC_ARG_ENABLE([xinput],
                      [AS_HELP_STRING([--enable-xinput], [Use the XI X extension])],
                      [],
                      [enable_xinput=yes])

        AS_IF([test "x$enable_xinput" = "xyes"],
              [
                PKG_CHECK_EXISTS([xi], [have_xinput=yes], [have_xinput=no])
              ],
              [
                have_xinput=no
              ])

        AS_CASE([$have_xinput],

                [yes],
                [
                  AC_CHECK_HEADERS([X11/extensions/XInput2.h],
                                   [
                                     have_xinput2=yes
                                     AC_DEFINE([HAVE_XINPUT_2],
                                               [1],
                                               [Define to 1 if XI2 is available])
                                   ],
                                   [
                                     have_xinput2=no
                                     AC_DEFINE([HAVE_XINPUT],
                                               [1],
                                               [Define to 1 if XInput is available])
                                   ])

                  X11_LIBS="$X11_LIBS $XINPUT_LIBS"
                  X11_PC_FILES="$X11_PC_FILES xi"
                ],

                [no],
                [have_xinput2=no],

                [*],
                [AC_MSG_ERROR([Invalid argument for --enable-xinput])]
        )

        # XKB
        clutter_save_CPPFLAGS="$CPPFLAGS"
        CPPFLAGS="$CPPFLAGS $X11_CFLAGS"

        clutter_save_LIBS="$LIBS"
        LIBS="$LIBS $X11_LIBS"

        have_xkb=no
        AC_CHECK_FUNC([XkbQueryExtension],
                      [
                        AC_DEFINE(HAVE_XKB, 1, [Define to use XKB extension])
                        have_xkb=yes
                      ])

        CPPFLAGS="$clutter_save_CPPFLAGS"
        LIBS="$clutter_save_LIBS"

        x11_tests=yes
        BACKEND_PC_FILES="$BACKEND_PC_FILES $X11_PC_FILES"
        FLAVOUR_LIBS="$FLAVOUR_LIBS $X11_LIBS"
        FLAVOUR_CFLAGS="$FLAVOUR_CFLAGS $X11_CFLAGS"
      ]
)

AM_CONDITIONAL([BUILD_XI2], [test "x$have_xinput2" = "xyes"])
AM_CONDITIONAL(X11_TESTS, [test "x$x11_tests" = "xyes"])

dnl === Enable debug level ====================================================

m4_define([debug_default], [m4_if(m4_eval(clutter_minor_version % 2), [1], [yes], [minimum])])
AC_ARG_ENABLE([debug],
              [AC_HELP_STRING([--enable-debug=@<:@no/minimum/yes@:>@],
                              [Control Clutter debugging level @<:@default=debug_default@:>@])],
              [],
              [enable_debug=debug_default])

AS_CASE([$enable_debug],

        [yes],
        [
          test "$cflags_set" = set || CFLAGS="$CFLAGS -g"
          CLUTTER_DEBUG_CFLAGS="-DCLUTTER_ENABLE_DEBUG"
        ],

        [minimum],
        [CLUTTER_DEBUG_CFLAGS="-DCLUTTER_ENABLE_DEBUG -DG_DISABLE_CAST_CHECKS"],

        [no],
        [CLUTTER_DEBUG_CFLAGS="-DG_DISABLE_ASSERT -DG_DISABLE_CHECKS -DG_DISABLE_CAST_CHECKS"],

        [AC_MSG_ERROR([Unknown argument for --enable-debug])]
)

AC_SUBST(CLUTTER_DEBUG_CFLAGS)

dnl === Conformance test suite ================================================

AC_ARG_ENABLE([conformance],
              [AC_HELP_STRING([--enable-conformance=@<:@no/yes@:>@],
                              [Build conformance test suite @<:@default=yes@:>@])],
              [],
              [enable_conformance=yes])

AM_CONDITIONAL([BUILD_TESTS], [test "x$enable_conformance" = "xyes"])

dnl === Profiling =============================================================

m4_define([profile_default], [no])
AC_ARG_ENABLE(profile,
              AC_HELP_STRING([--enable-profile=@<:@no/yes@:>@],
                             [Turn on profiling support. yes; All profiling probe points are compiled in and may be runtime enabled. no; No profiling support will built into clutter.  @<:@default=no@:>@]),
              [],
              [enable_profile=profile_default])

AS_CASE([$enable_profile],

        [yes],
        [
          AS_IF([test "x$GCC" = "xyes"],
                [
                  PKG_CHECK_MODULES([PROFILE_DEP], [uprof-0.3])
                  CLUTTER_PROFILE_CFLAGS="-DCLUTTER_ENABLE_PROFILE $PROFILE_DEP_CFLAGS"
                  CLUTTER_PROFILE_LDFLAGS="$PROFILE_DEP_LIBS"

                  AS_IF([test "x$enable_debug" = "xyes"], [CLUTTER_PROFILE_CFLAGS+=" -DUPROF_DEBUG"])
                ],
                [
                  AC_MSG_ERROR([--enable-profile is currently only supported if using GCC])
                ])
        ],

        [no],
        [
          CLUTTER_PROFILE_CFLAGS=""
          CLUTTER_PROFILE_LDFLAGS=""
        ],

        [*], [AC_MSG_ERROR([Invalid value for --enable-profile])]
)
AM_CONDITIONAL(PROFILE, test "x$enable_profile" != "xno")
AC_SUBST(CLUTTER_PROFILE_CFLAGS)
AC_SUBST(CLUTTER_PROFILE_LDFLAGS)

dnl === Coverage report =======================================================

AC_PATH_PROG([GCOV], [gcov], [enable_gcov=no])

AC_MSG_CHECKING([whether to build with gcov testing])

AC_ARG_ENABLE([gcov],
              [AS_HELP_STRING([--enable-gcov],
                              [Whether to enable coverage testing (requires gcc
and gcov)])],
              [],
              [enable_gcov=no])

AS_IF([test "x$enable_gcov" = "xyes" && test "x$GCC" = "xyes"],
      [
        AS_IF([test "x$enable_conformance" = "xno"],
              [AC_MSG_WARN([Conformance test suite is disabled, the coverage report will be incomplete])],
              [AC_MSG_RESULT([yes])]
        )

        GCOV_CFLAGS="-g -O0 -fprofile-arcs -ftest-coverage"
        GCOV_LDFLAGS="-lgcov"
      ],
      [AC_MSG_RESULT([no])]
)

AM_CONDITIONAL([GCOV_ENABLED], [test "x$enable_gcov" = "xyes"])
AC_SUBST([GCOV_CFLAGS])
AC_SUBST([GCOV_LDFLAGS])

dnl === Enable strict compiler flags ==========================================

# use strict compiler flags only when building from git; the rules for
# distcheck will take care of turning this on when making a release
m4_define([maintainer_flags_default], [m4_if(m4_eval(clutter_micro_version % 2), [1], [yes], [no])])
AC_ARG_ENABLE([maintainer-flags],
              [AC_HELP_STRING([--enable-maintainer-flags=@<:@no/yes/error@:>@],
                              [Use strict compiler flags @<:@default=maintainer_flags_default@:>@])],
              [],
              [enable_maintainer_flags=maintainer_flags_default])

MAINTAINER_COMPILER_FLAGS="-Wall -Wshadow -Wcast-align -Wuninitialized
                           -Wno-strict-aliasing -Wempty-body -Wformat
                           -Wformat-security -Winit-self
                           -Wdeclaration-after-statement -Wvla
                           -Wpointer-arith"

AS_CASE([$enable_maintainer_flags],
        [yes],
        [
          AS_COMPILER_FLAGS([MAINTAINER_CFLAGS], [$MAINTAINER_COMPILER_FLAGS])
        ],

        [no],
        [
        ],

        [error],
        [
          MAINTAINER_COMPILER_FLAGS="$MAINTAINER_COMPILER_FLAGS -Werror"
          AS_COMPILER_FLAGS([MAINTAINER_CFLAGS], [$MAINTAINER_COMPILER_FLAGS])
        ],

        [*],
        [AC_MSG_ERROR([Invalid option for --enable-maintainer-flags])]
)

# strip leading spaces
MAINTAINER_CFLAGS=${MAINTAINER_CFLAGS#*  }
AC_SUBST(MAINTAINER_CFLAGS)

dnl === Dependencies, compiler flags and linker libraries =====================
# strip leading space
BACKEND_PC_FILES=${BACKEND_PC_FILES#* }

CLUTTER_REQUIRES="$CLUTTER_BASE_PC_FILES $IMAGE_PC_FILES $BACKEND_PC_FILES"
PKG_CHECK_MODULES(CLUTTER_DEPS, [$CLUTTER_REQUIRES])
AC_SUBST(CLUTTER_REQUIRES)

CLUTTER_CFLAGS="$FLAVOUR_CFLAGS $CLUTTER_DEPS_CFLAGS $CLUTTER_PROFILE_CFLAGS $GLIB_CFLAGS"
CLUTTER_LIBS="$FLAVOUR_LIBS $CLUTTER_DEPS_LIBS $CLUTTER_PROFILE_LDFLAGS $GLIB_LIBS"
AC_SUBST(CLUTTER_CFLAGS)
AC_SUBST(CLUTTER_LIBS)


dnl === GObject-Introspection check ===========================================

GOBJECT_INTROSPECTION_CHECK([gi_req_version])

dnl === GTK Doc check =========================================================

GTK_DOC_CHECK([gtk_doc_req_version], [--flavour no-tmpl])

# we don't want to build the documentation from a Git clone unless we
# explicitly tell configure to do so; this allows avoiding to recurse into
# the documentation directory when building Clutter inside Poky for a
# target device that doesn't have gtk-doc installed. for reference
# see: http://bugzilla.openedhand.com/show_bug.cgi?id=1047
#
# we use autogen.sh as it exists only inside the Git clones, and it
# is not packaged into tarballs.
AM_CONDITIONAL([BUILD_GTK_DOC], [test "x$enable_gtk_doc" = "xyes" || test ! -f "autogen.sh"])

# prefixes for fixing gtk-doc references
CAIRO_PREFIX="`$PKG_CONFIG --variable=prefix cairo`"
GLIB_PREFIX="`$PKG_CONFIG --variable=prefix glib-2.0`"
PANGO_PREFIX="`$PKG_CONFIG --variable=prefix pango`"
ATK_PREFIX="`$PKG_CONFIG --variable=prefix atk`"
AC_SUBST(CAIRO_PREFIX)
AC_SUBST(GLIB_PREFIX)
AC_SUBST(PANGO_PREFIX)
AC_SUBST(ATK_PREFIX)

dnl === Manual ================================================================

AC_ARG_ENABLE([docs],
              [AC_HELP_STRING([--enable-docs=@<:@no/yes@:>@],
                              [Build optional documentation; requires xsltproc and jw.])],
              [enable_docs=$enableval],
              [enable_docs=no])

enable_pdfs=no
AS_IF([test "x$enable_docs" = "xyes"],
      [
        AC_PATH_PROG(JW, [jw], [no])
        AS_IF([test "x$JW" = "xno"],
              [
                AC_MSG_WARN([jw not found; pdf generation has been disabled])
              ],
              [enable_pdfs=yes])

        AC_PATH_PROG(XSLTPROC, [xsltproc], [no])
        AS_IF([test "x$XSLTPROC" = "xno"],
              [
                AC_MSG_ERROR([xsltproc not found])
              ])
      ]
)

AM_CONDITIONAL(ENABLE_DOCS, [test "x$enable_docs" = "xyes"])
AM_CONDITIONAL(ENABLE_PDFS, [test "x$enable_pdfs" = "xyes"])

dnl === I18N ==================================================================

AM_GNU_GETTEXT_VERSION([0.17])
AM_GNU_GETTEXT([external])

GETTEXT_PACKAGE="clutter-1.0"
AC_SUBST(GETTEXT_PACKAGE)
AC_DEFINE_UNQUOTED([GETTEXT_PACKAGE],
                   ["$GETTEXT_PACKAGE"],
                   [The prefix for our gettext translation domains.])
AS_ALL_LINGUAS

dnl ===========================================================================

AC_CONFIG_FILES([
	Makefile

        README

	build/Makefile
	build/autotools/Makefile
	build/mingw/Makefile

	clutter/Makefile
        clutter/clutter-config.h
	clutter/clutter-version.h
	clutter/clutter-$CLUTTER_API_VERSION.pc:clutter/clutter.pc.in

	clutter/cally/cally-$CLUTTER_API_VERSION.pc:clutter/cally/cally.pc.in

	clutter/egl/clutter-cex100.h

	tests/Makefile
	tests/accessibility/Makefile
	tests/conform/Makefile
	tests/conform/test-launcher.sh
	tests/data/Makefile
	tests/interactive/Makefile
	tests/interactive/wrapper.sh
	tests/micro-bench/Makefile

	doc/Makefile
	doc/reference/Makefile
	doc/reference/clutter/Makefile
	doc/reference/clutter/clutter-docs.xml
	doc/reference/cally/Makefile
	doc/reference/cally/cally-docs.xml
	doc/common/Makefile
	doc/manual/Makefile
	doc/manual/clutter-manual.xml
	doc/cookbook/Makefile
	doc/cookbook/clutter-cookbook.xml
	doc/cookbook/examples/Makefile

	po/Makefile.in
])

AC_OUTPUT

dnl === Summary ===============================================================

echo ""
echo "Clutter - $VERSION (${CLUTTER_RELEASE_STATUS})"

# Global flags
echo ""
echo " • Global:"
echo "        Prefix: ${prefix}"
echo "        Flavour: ${CLUTTER_WINSYS}"
echo "        Target library: ${CLUTTER_WINSYS_LIB}"

# Compiler/Debug related flags
echo ""
echo " • Compiler options:"
echo "        Clutter debug level: ${enable_debug}"
echo "        Compiler flags: ${CFLAGS} ${MAINTAINER_CFLAGS}"
echo "        Profiling enabled: ${enable_profile}"
echo "        Enable coverage tests: ${enable_gcov}"

# Documentation
echo ""
echo " • Documentation:"
echo "        Build API Reference: ${enable_gtk_doc}"
echo "        Build Additional Documentation: ${enable_docs} (Generate PDF: ${enable_pdfs})"

# Miscellaneous
echo ""
echo " • Extra:"
echo "        Build introspection data: ${enable_introspection}"
echo "        Build conformance test suite: ${enable_conformance}"

# Clutter backend related flags
echo ""
echo " • Clutter Backend:"

if test "x$experimental_backend" = "xno"; then
echo "        Windowing system: ${CLUTTER_WINSYS}"
else
echo "        Windowing system: ${CLUTTER_WINSYS} (WARNING: Experimental)"
fi

if test "x$SUPPORT_XLIB" = "x1"; then
echo "        Enable XComposite: ${have_xcomposite}"
echo "        Enable XInput: ${have_xinput}"
echo "        Enable XI2: ${have_xinput2}"
echo "        Enable XKB: ${have_xkb}"
echo "        Enable X11 tests: ${x11_tests}"
fi

echo ""

# General warning about experimental features
if test "x$experimental_backend" = "xyes" ||
   test "x$experimental_image" = "xyes"
then
echo ""
echo "☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠"
echo " *WARNING*"
echo ""
echo "  The stability of your build might be affected by one or more"
echo "  experimental backends or experimental and unsupported features"
echo "☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠☠"
echo ""
fi