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
#   UNLESS there was an API addition/deprecation, in which case
#   - set clutter_interface_age to 0
# 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], [1])
m4_define([clutter_micro_version], [3])

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])

# 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
#   ...
#
m4_define([clutter_interface_age], [1])
m4_define([clutter_binary_age], [m4_eval(100 * clutter_minor_version + clutter_micro_version)])

AC_PREREQ([2.59])

AC_INIT([clutter],
        [clutter_version],
        [http://bugzilla.o-hand.com/enter_bug.cgi?product=Clutter])

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([1.9.6 foreign])

CLUTTER_MAJOR_VERSION=clutter_major_version
CLUTTER_MINOR_VERSION=clutter_minor_version
CLUTTER_MICRO_VERSION=clutter_micro_version
CLUTTER_VERSION=clutter_version
CLUTTER_API_VERSION=clutter_api_version
CLUTTER_MAJORMINOR=clutter_major_version.clutter_minor_version
CLUTTER_RELEASE_STATUS=clutter_release_status
AC_SUBST(CLUTTER_MAJOR_VERSION)
AC_SUBST(CLUTTER_MINOR_VERSION)
AC_SUBST(CLUTTER_MICRO_VERSION)
AC_SUBST(CLUTTER_VERSION)
AC_SUBST(CLUTTER_API_VERSION)
AC_SUBST(CLUTTER_MAJORMINOR)
AC_SUBST(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_SUBST(CLUTTER_LT_VERSION)
AC_SUBST(CLUTTER_LT_LDFLAGS)

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

# Checks for programs.
AM_PROG_CC_C_O
AC_DISABLE_STATIC
AC_PROG_LIBTOOL
DOLT

# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([fcntl.h stdlib.h string.h unistd.h])

# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST

# Checks for library functions.
AC_FUNC_MALLOC
AC_FUNC_MMAP
AC_CHECK_FUNCS([memset memcpy strcasecmp])

AC_PATH_PROG([GLIB_MKENUMS], [glib-mkenums])
AC_PATH_PROG([GLIB_GENMARSHAL], [glib-genmarshal])

PKG_PROG_PKG_CONFIG

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

# defaults
CLUTTER_WINSYS_BASE=
CLUTTER_WINSYS_BASE_LIB=
CLUTTER_WINSYS=glx
clutter_gl_header=""
glesversion=1.1
use_gles2_wrapper=no
experimental_backend=no
experimental_image=no

AC_ARG_WITH([flavour],
            [AC_HELP_STRING([--with-flavour=@<:@glx/eglx/eglnative/sdl/osx/win32/fruity@:>@],
                            [Select the Clutter window system backend])],
            [CLUTTER_WINSYS=$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])

# the fruity backend requires a different handling for GLES
AS_IF([test "x$CLUTTER_WINSYS" = "xfruity"], [glesversion=fruity])

# backend specific pkg-config files
BACKEND_PC_FILES=""

# This is only used to decide whether to build tests/tools/disable-npots.la
AC_CHECK_LIB(dl, [dlopen], [HAVE_LIBDL=yes], [HAVE_LIBDL=no])
AM_CONDITIONAL(HAVE_LIBDL, [test "x$HAVE_LIBDL" = "xyes"])

dnl === COGL GLES backend =====================================================

AS_IF([test "x$CLUTTER_WINSYS" = "xeglnative" ||
       test "x$CLUTTER_WINSYS" = "xeglx"      ||
       test "x$CLUTTER_WINSYS" = "xfruity"],

      [
        AS_CASE([$glesversion],

                [1*],
                [
                  clutter_gl_header="GLES/gl.h"

                  COGL_DRIVER="gles"
                  AC_DEFINE([HAVE_COGL_GLES], 1, [Have GL/ES for rendering])
		  AC_SUBST(COGL_GLES_VERSION, [COGL_HAS_GLES1])

                  AC_CHECK_HEADERS([GLES/egl.h],
                                   [],
                                   [AC_MSG_ERROR([Unable to locate required GLES headers])])


                  # check for upper/lower case libgles_em
                  # The powervr sdk uses lower case.
                  AC_CHECK_LIB(GLES_CM, [eglInitialize],
                               [HAVE_LIBGLES=yes],
                               [HAVE_LIBGLES=no])

                  AS_IF([test "x$HAVE_LIBGLES" = "xyes"],
                        [GLES_LIBS="-lGLES_CM"],
                        [
                          AC_CHECK_LIB(GLESv1_CM, [eglInitialize],
                                       [HAVE_LIBGLES=yes],
                                       [HAVE_LIBGLES=no])

                          AS_IF([test "x$HAVE_LIBGLES" = "xyes"],
                                [GLES_LIBS="-lGLESv1_CM"],
                                [
                                  AC_CHECK_LIB(gles_cm, [eglInitialize],
                                               [HAVE_LIBGLES=yes],
                                               [HAVE_LIBGLES=no])

                                  AS_IF([test "x$HAVE_LIBGLES" = "xyes"],
                                        [GLES_LIBS="-lgles_cm"],
                                        [
                                          AC_MSG_ERROR([GLES library not found and egl backend requested.])
                                        ]
                                  )
                                ]
                          )
                        ]
                  )
                ],

                [2*],
                [
                  clutter_gl_header="GLES2/gl2.h"
                  use_gles2_wrapper=yes
                  COGL_DRIVER="gles"
                  AC_DEFINE([HAVE_COGL_GLES2], 1, [Have GL/ES for rendering])
		  AC_SUBST(COGL_GLES_VERSION, [COGL_HAS_GLES2])

                  AC_CHECK_HEADERS([EGL/egl.h],
                                   [],
                                   [AC_MSG_ERROR([Unable to locate required GLES headers])])

                  GLES_LIBS="-lGLESv2 -lEGL"
                ],

                [fruity],
                [
                  clutter_gl_header="GLES/gl.h"
                  COGL_DRIVER="gles"
                  AC_DEFINE([HAVE_COGL_GLES], 1, [Have GL/ES for rendering])
		  AC_SUBST(COGL_GLES_VERSION, [COGL_HAS_GLES1])

                  AC_CHECK_HEADERS([GLES/egl.h],
                                   [],
                                   [AC_MSG_ERROR([Unable to locate required GLES headers])])
                ],

                [AC_MSG_ERROR([Unknown argument for --with-gles])]
        )
      ]
)

AM_CONDITIONAL(USE_GLES2_WRAPPER, [test "x$use_gles2_wrapper" = "xyes"])

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

AS_CASE([$CLUTTER_WINSYS],

        [sdl],
        [
          experimental_backend="yes"
          clutter_gl_header="GL/gl.h"
          CLUTTER_STAGE_TYPE="CLUTTER_TYPE_STAGE_SDL"
          AC_DEFINE([HAVE_CLUTTER_SDL], [1], [Have the SDL backend])

          COGL_DRIVER="gl"
          AC_DEFINE([HAVE_COGL_GL], [1], [Have GL for rendering])

          AC_PATH_PROG(SDL_CONFIG, [sdl-config])
          AS_IF([test "x$SDL_CONFIG" = "x"],
                [AC_MSG_ERROR([No sdl-config binary found in path])],
                [
                  SDL_CFLAGS=`$SDL_CONFIG --cflags`
                  SDL_LIBS=`$SDL_CONFIG --libs`

                  AS_CASE([$host],

                          [*mingw32*],
                          [
                            # Use -lopengl32 under Windows instead of -lGL
                            SDL_LIBS="$SDL_LIBS -lopengl32"
                            CLUTTER_LT_LDFLAGS="$CLUTTER_LT_LDFLAGS -no-undefined"
                          ],

                          [
                            AC_CHECK_LIB(GL, [glEnable], [HAVE_LIBGL=yes], [HAVE_LIBGL=no])
                            AS_IF([test "x$HAVE_LIBGL" = "xno"], [AC_MSG_ERROR([libGL not found])])
                            SDL_LIBS="$SDL_LIBS -lGL"
                          ]
                  )
                ]
          )
        ],

        [glx],
        [
          clutter_gl_header="GL/gl.h"
          CLUTTER_STAGE_TYPE="CLUTTER_TYPE_STAGE_GLX"
          AC_DEFINE([HAVE_CLUTTER_GLX], [1], [Have the GLX backend])

          COGL_DRIVER="gl"
          AC_DEFINE([HAVE_COGL_GL], [1], [Have GL for rendering])

          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])])

          GLX_LIBS="$X11_LIBS -lGL"
          GLX_CFLAGS="$X11_CFLAGS"

          CLUTTER_WINSYS_BASE=x11
          CLUTTER_WINSYS_BASE_LIB="x11/libclutter-x11.la"

          # Mesa 7.3 added a GL pkg-config file, finally
          PKG_CHECK_EXISTS([gl], [BACKEND_PC_FILES="$BACKEND_PC_FILES gl"], [])
        ],

        [eglx],
        [
          # the GL header is defined in the COGL checks above
          CLUTTER_STAGE_TYPE="CLUTTER_TYPE_STAGE_EGL"
          AC_DEFINE([HAVE_CLUTTER_EGL], [1], [Have the EGL backend])

          EGL_LIBS="$GLES_LIBS $X11_LIBS"
          EGL_CFLAGS="$GLES_CFLAGS $X11_CFLAGS"

          CLUTTER_WINSYS_BASE=x11
          CLUTTER_WINSYS_BASE_LIB="x11/libclutter-x11.la"

          # Mesa 7.3 added a GL pkg-config file, finally
          PKG_CHECK_EXISTS([gl], [BACKEND_PC_FILES="$BACKEND_PC_FILES gl"], [])
        ],

        [eglnative],
        [
          # the GL header is defined in the COGL checks above
          CLUTTER_STAGE_TYPE="CLUTTER_TYPE_STAGE_EGLNATIVE"
          AC_DEFINE([HAVE_CLUTTER_EGL], [1], [Have the EGL backend])

          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])]
          )

          EGL_LIBS="$GLES_LIBS $TSLIB_LIBS"
          EGL_CFLAGS="$TSLIB_CFLAGS"
        ],

        [fruity],
        [
          experimental_backend="yes"
          # the GL header is defined in the COGL checks above
          CLUTTER_STAGE_TYPE="CLUTTER_TYPE_STAGE_FRUITY"
          AC_DEFINE([HAVE_CLUTTER_FRUITY], [1], [Have the Fruity backend])

          EGL_LIBS="-ObjC -framework Foundation  -framework CoreFoundation  -framework CoreGraphics  -framework CoreSurface  -framework GraphicsServices  -framework OpenGLES  -framework LayerKit  -framework UIKit"
          EGL_CFLAGS=""
        ],

        [osx],
        [
          experimental_backend="yes"
          clutter_gl_header="OpenGL/gl.h"
          CLUTTER_STAGE_TYPE="CLUTTER_TYPE_STAGE_OSX"
          AC_DEFINE([HAVE_CLUTTER_OSX], [1], [Have the OSX backend])

          COGL_DRIVER="gl"
          AC_DEFINE([HAVE_COGL_GL], [1], [Have GL for rendering])

          OSX_LIBS="-framework Cocoa -framework OpenGL"
        ],

        [win32],
        [
          clutter_gl_header="GL/gl.h"
          CLUTTER_STAGE_TYPE="CLUTTER_TYPE_STAGE_WIN32"
          AC_DEFINE([HAVE_CLUTTER_WIN32], [1], [Have the Win32 backend])

          COGL_DRIVER="gl"
          AC_DEFINE([HAVE_COGL_GL], [1], [Have GL for rendering])

          WIN32_CFLAGS="-D_WIN32_WINNT=0x0500"
          WIN32_LIBS="-lopengl32 -lgdi32 -lwinmm"
          CLUTTER_LT_LDFLAGS="$CLUTTER_LT_LDFLAGS -no-undefined"
        ],

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

# at this point we must have a GL header to check
AS_IF([test "x$clutter_gl_header" = "x"], [AC_MSG_ERROR([Internal error: no GL header set])])
AC_CHECK_HEADERS([$clutter_gl_header],
                 [],
                 [AC_MSG_ERROR([Unable to locate required GLES headers])])

CLUTTER_GL_HEADER=$clutter_gl_header


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_GL_HEADER)
AC_SUBST(CLUTTER_STAGE_TYPE)

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

dnl === Clutter substitutions kept for backwards compatibility ================
CLUTTER_FLAVOUR=$CLUTTER_WINSYS
AC_SUBST([CLUTTER_FLAVOUR])
CLUTTER_COGL=$COGL_DRIVER
AC_SUBST([CLUTTER_COGL])

dnl === Cogl substitutions ====================================================
AC_SUBST([COGL_IMAGE_BACKEND])
COGL_WINSYS=$CLUTTER_WINSYS
AC_SUBST([COGL_WINSYS])
AC_SUBST([COGL_DRIVER])

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

# Peek which winsys the user wants so that we can couple the osx winsys with
# quartz imageloader.
AS_IF([test "x$COGL_WINSYS" = "xosx"], [COGL_IMAGE_BACKEND=quartz], [COGL_IMAGE_BACKEND=gdk-pixbuf])

AC_ARG_WITH([imagebackend],
            [AC_HELP_STRING([--with-imagebackend=@<:@gdk-pixbuf/quartz/internal@:>@],
                            [Select COGL image loading backend])],
            [COGL_IMAGE_BACKEND=$with_imagebackend])

AS_CASE([$COGL_IMAGE_BACKEND],

        [quartz],
        [
          experimental_image=yes
          AC_DEFINE([USE_QUARTZ], 1, [Use Core Graphics (Quartz) for loading image data])
        ],

        [gdk-pixbuf],
        [
          AC_DEFINE([USE_GDKPIXBUF], 1, [Use GdkPixbuf for loading image data])
          IMAGE_PC_FILES="gdk-pixbuf-2.0"
        ],

        [internal],
        [
          experimental_image=yes
          AC_DEFINE([USE_INTERNAL], 1, [Use internal image decoding for loading image data])
        ],

        [AC_MSG_ERROR([Unknown argument for --with-imagebackend])]
)

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

AS_IF([test "x$CLUTTER_WINSYS" = "xglx" || test "x$CLUTTER_WINSYS" = "xeglx"],
      [
        # 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"
                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 >= 3])
        PKG_CHECK_EXISTS([xfixes >= 3], [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"

                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 >= 0.4])
        PKG_CHECK_EXISTS([xcomposite >= 0.4], [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"

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

        # XINPUT (optional)
        xinput=no
        AC_ARG_ENABLE([xinput],
                      [AS_HELP_STRING([--enable-xinput], [Use the XINPUT X extension])],
                      [
                        AS_IF([test "x$enableval" = "xyes"],
                              [PKG_CHECK_MODULES(XINPUT, [xi], [xinput=yes], [xinput=no])]
                        )
                      ],
                      [xinput=no])

        AS_CASE([$xinput],

                [yes],
                [
                  AC_DEFINE(HAVE_XINPUT, 1, Use the XINPUT X extension)

                  X11_LIBS="$X11_LIBS -lXi"
                  X11_PC_FILES="$X11_PC_FILES xi"
                ],

                [no],
                [],
        )

        # X11-specific tests are enabled conditionally
        AS_IF([test "x$have_xcomposite" = "xyes"], [x11_tests=yes], [x11_tests=no])

        BACKEND_PC_FILES="$BACKEND_PC_FILES $X11_PC_FILES"
      ]
)

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

dnl === JSON parser check =====================================================

# we allow building clutter with the internal copy of json-glib
# for platforms without it, but by default we depend on the
# system copy
m4_define([default_json], [check])
AC_ARG_WITH([json],
            AC_HELP_STRING([--with-json=@<:@internal/check/system@:>@],
                           [Select the JSON-GLib copy to use @<:@default=default_json@:>@]),
            [],
            [with_json=default_json])

AS_CASE([$with_json],

        [internal],
        [
          JSON_PREFIX=json
          have_json=no
        ],

        [system],
        [
          AC_MSG_CHECKING([for installed JSON-GLib])
          PKG_CHECK_EXISTS([json-glib-1.0 >= 0.8],
                           [have_json=yes],
                           [have_json=no])
          AS_IF([test "x$have_json" = "xyes"],
                [
                  JSON_PREFIX=json-glib
                  JSON_GLIB_PC="json-glib-1.0 >= 0.8"

                  AC_DEFINE([HAVE_JSON_GLIB],
                            [1],
                            [Have the JSON-GLib library installed])

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

        [check],
        [
          AC_MSG_CHECKING([for installed JSON-GLib])
          PKG_CHECK_EXISTS([json-glib-1.0 >= 0.8],
                           [have_json=yes],
                           [have_json=no])
          AS_IF([test "x$have_json" = "xyes"],
                [
                  JSON_PREFIX=json-glib
                  JSON_GLIB_PC="json-glib-1.0 >= 0.8"

                  AC_DEFINE([HAVE_JSON_GLIB],
                            [1],
                            [Have the JSON-GLib library installed])

                  AC_MSG_RESULT([found])
                ],
                [
                  JSON_PREFIX=json
                  AC_MSG_RESULT([not found, using internal copy])
                ]
          )
        ],

        [AC_MSG_ERROR([Unknown argument for --with-json])]
)

AC_SUBST(JSON_PREFIX)
AM_CONDITIONAL(LOCAL_JSON_GLIB, test "x$have_json" = "xno")

dnl === Dependencies, compiler flags and linker libraries =====================
CLUTTER_REQUIRES="cairo >= 1.4 pangocairo >= 1.20 gobject-2.0 >= 2.16 gthread-2.0 gmodule-no-export-2.0 $IMAGE_PC_FILES $BACKEND_PC_FILES $JSON_GLIB_PC"

PKG_CHECK_MODULES(CLUTTER_DEPS, [$CLUTTER_REQUIRES])

AC_SUBST(CLUTTER_REQUIRES)

CLUTTER_CFLAGS="$SDL_CFLAGS $EGL_CFLAGS $GLX_CFLAGS $OSX_CFLAGS $WIN32_CFLAGS $CLUTTER_DEPS_CFLAGS"
CLUTTER_LIBS="$SDL_LIBS $EGL_LIBS $X11_LIBS $GLX_LIBS $OSX_LIBS $WIN32_LIBS $CLUTTER_DEPS_LIBS"

AC_SUBST(CLUTTER_CFLAGS)
AC_SUBST(CLUTTER_LIBS)

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)

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

AS_CASE([$enable_cogl_debug],

        [yes],
        [COGL_DEBUG_CFLAGS="-DCOGL_GL_DEBUG -DCOGL_HANDLE_DEBUG -DCOGL_ENABLE_DEBUG"],

        [minimum],
        [COGL_DEBUG_CFLAGS="-DCOGL_ENABLE_DEBUG"],

        [no],
        [COGL_DEBUG_CFLAGS=""],

        [AC_MSG_ERROR([Invalid value for --enable-cogl-debug])]
)

AC_SUBST(COGL_DEBUG_CFLAGS)

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

# use strict compiler flags only on development releases
m4_define([maintainer_flags_default], [m4_if(m4_eval(clutter_minor_version % 2), [1], [yes], [no])])
AC_ARG_ENABLE([maintainer-flags],
              [AC_HELP_STRING([--enable-maintainer-flags=@<:@no/yes@:>@],
                              [Use strict compiler flags @<:@default=maintainer_flags_default@:>@])],
              [],
              [enable_maintainer_flags=maintainer_flags_default])

AS_IF([test "x$enable_maintainer_flags" = "xyes" && test "x$GCC" = "xyes"],
      [
        AS_COMPILER_FLAGS([MAINTAINER_CFLAGS],
                          ["-Wall -Wshadow -Wcast-align -Wno-uninitialized
                            -Wno-strict-aliasing -Wempty-body -Wformat-security
                            -Winit-self"])
      ]
)

AC_SUBST(MAINTAINER_CFLAGS)

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

GOBJECT_INTROSPECTION_CHECK([0.6.4])

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

GTK_DOC_CHECK([1.11])

# 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`"
AC_SUBST(CAIRO_PREFIX)
AC_SUBST(GLIB_PREFIX)
AC_SUBST(PANGO_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 ==================================================================

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

ALL_LINGUAS="`grep -v '^#' "$srcdir/po/LINGUAS" | tr '\n' ' '`"
AM_GLIB_GNU_GETTEXT
GLIB_DEFINE_LOCALEDIR(LOCALEDIR)

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

m4_ifdef([AM_SILENT_RULES],
	 [
           AM_SILENT_RULES([yes])
           use_shave=no
         ],
	 [
           SHAVE_INIT([build/autotools], [enable])
           AC_CONFIG_FILES([
                build/autotools/shave
                build/autotools/shave-libtool
           ])
           use_shave=yes
         ])

AM_CONDITIONAL([USE_SHAVE], [test "x$use_shave" = "xyes"])

AC_CONFIG_FILES([
        Makefile
        build/Makefile
        build/autotools/Makefile
        clutter/Makefile
        clutter/clutter-version.h
        clutter/clutter-json.h
        clutter/x11/Makefile
        clutter/x11/clutter-x11.pc
        clutter/glx/Makefile
        clutter/eglx/Makefile
        clutter/eglnative/Makefile
        clutter/fruity/Makefile
        clutter/osx/Makefile
        clutter/win32/Makefile
        clutter/win32/clutter-win32.pc
        clutter/sdl/Makefile
        clutter/cogl/Makefile
        clutter/cogl/cogl/Makefile
        clutter/cogl/cogl/driver/gl/cogl-defines.h
        clutter/cogl/cogl/driver/gles/cogl-defines.h
        clutter/cogl/cogl/cogl.pc
        clutter/cogl/cogl/driver/Makefile
        clutter/cogl/cogl/driver/gl/Makefile
        clutter/cogl/cogl/driver/gles/Makefile
        clutter/cogl/pango/Makefile
        clutter/json/Makefile
        tests/Makefile
        tests/conform/Makefile
        tests/data/Makefile
        tests/interactive/Makefile
        tests/micro-bench/Makefile
        tests/tools/Makefile
        doc/Makefile
        doc/reference/Makefile
        doc/reference/clutter/Makefile
        doc/reference/clutter/clutter-docs.xml
        doc/reference/cogl/Makefile
        doc/reference/cogl/cogl-docs.xml
        doc/common/Makefile
        doc/manual/Makefile
        doc/manual/clutter-manual.xml
        doc/cookbook/Makefile
        doc/cookbook/clutter-cookbook.xml
        po/Makefile.in
        clutter.pc
])

AC_OUTPUT

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

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

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

# Compiler/Debug related flags
echo ""
echo " • Compiler options:"
echo "        Clutter debug level: ${enable_debug}"
echo "        COGL debug level: ${enable_cogl_debug}"
echo "        Compiler flags: ${MAINTAINER_CFLAGS}"

# 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 test suite: ${enable_glibtest}"

if test "x$have_json" = "xyes"; then
echo "        JSON-GLib: system"
else
echo "        JSON-GLib: internal"
fi

# COGL flags
echo ""
echo " • COGL Backend:"
echo "        Driver: ${COGL_DRIVER}"
echo "        GL header: ${CLUTTER_GL_HEADER}"

if test "x$COGL_DRIVER" = "xgles"; then
  if test "x$use_gles2_wrapper" = "xyes"; then
echo "        GLES version: 2.0"
  else
echo "        GLES version: 1.1"
  fi
fi

if test "x$experimental_image" = "xno"; then
echo "        Image backend: ${COGL_IMAGE_BACKEND}"
else
echo "        Image backend: ${COGL_IMAGE_BACKEND} (WARNING: Experimental)"
fi

# 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$CLUTTER_WINSYS" = "xglx" ||
   test "x$CLUTTER_WINSYS" = "xeglx"; then
echo "        Enable XInput 1.0: ${xinput}"
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