# Process this file with autoconf to produce a configure script.
AC_INIT(include/vips/colour.h)
AM_CONFIG_HEADER(config.h)

# user-visible library versioning
IM_MAJOR_VERSION=7
IM_MINOR_VERSION=15
IM_MICRO_VERSION=1
IM_VERSION=$IM_MAJOR_VERSION.$IM_MINOR_VERSION.$IM_MICRO_VERSION
IM_VERSION_STRING=$IM_VERSION-`date`

VERSION=$IM_VERSION
PACKAGE=vips

# libtool library versioning ... not user-visible (except as part of the
# library file name) and does not correspond to major/minor/micro above

# rules:
# sources changed: increment revision
# interface changed: increment current, reset revision to 0
#   interface changes backwards compatible?: increment age
#   interface changes not backwards compatible?: reset age to 0

LIBRARY_CURRENT=21
LIBRARY_REVISION=0
LIBRARY_AGE=6

AM_INIT_AUTOMAKE($PACKAGE,$VERSION)

# patched into include/vips/version.h
AC_SUBST(IM_VERSION)
AC_SUBST(IM_VERSION_STRING)
AC_SUBST(IM_MAJOR_VERSION)
AC_SUBST(IM_MINOR_VERSION)
AC_SUBST(IM_MICRO_VERSION)

# put into library name by libsrc/Makefile.am and libsrcCC/Makefile.am
AC_SUBST(LIBRARY_CURRENT)
AC_SUBST(LIBRARY_REVISION)
AC_SUBST(LIBRARY_AGE)

AC_CANONICAL_HOST

AC_MSG_CHECKING([for native Win32])
case "$host" in
  *-*-mingw*)
    vips_os_win32=yes
    ;;
  *)
    vips_os_win32=no
    ;;
esac
AC_MSG_RESULT([$vips_os_win32])

if test x"$vips_os_win32" = "xyes"; then
  AC_DEFINE(OS_WIN32,1,[native win32])

  # makes gcc use win native alignment
  VIPS_CFLAGS="-mms-bitfields $VIPS_CFLAGS"
fi

# CImg needs flags changed on win32
if test x"$vips_os_win32" = "xyes"; then
  AM_CONDITIONAL(OS_WIN32, true)
else
  AM_CONDITIONAL(OS_WIN32, false)
fi

# Cygwin/mingw need binary open to avoid CR/LF madness
# ... should be a better way to test for this
AC_MSG_CHECKING([for binary open needed])
case "$host_os" in
  cygwin* | mingw*)
    vips_binary_open=yes
    ;;
  *)
    vips_binary_open=no
    ;;
esac
AC_MSG_RESULT([$vips_binary_open])
if test x"$vips_binary_open" = "xyes"; then
  AC_DEFINE(BINARY_OPEN,1,[define to open non-text files in binary mode])
fi

# we want largefile support, if possible
AC_SYS_LARGEFILE

# Checks for programs.
AC_PROG_AWK
AC_PROG_CC
AC_PROG_CC_STDC
AC_C_CONST
AC_PROG_RANLIB
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_CXX
AM_WITH_DMALLOC

# we need a fully expanded version of $libdir
# without this we get something like
#    define IM_LIBDIR ${exec_prefix}/lib
# argh
test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'

# set $expanded_value to the full-expanded value of the argument
expand () {
	eval expanded_value=$1

	if test x"$expanded_value" != x"$1"; then
		expand "$expanded_value"
	fi
}

expand $libdir
my_libdir=$expanded_value

# vips.c/im_guess_prefix.c need to know the exe suffix and (as a fallback)
# the configure-time install prefix
AC_DEFINE_UNQUOTED(IM_EXEEXT,"$EXEEXT",[extension for executable files])
AC_DEFINE_UNQUOTED(IM_PREFIX,"$prefix",[configure-time install prefix])
AC_DEFINE_UNQUOTED(IM_LIBDIR,"$my_libdir",[configure-time library directory])

# i18n
GETTEXT_PACKAGE=vips7
AC_SUBST(GETTEXT_PACKAGE)
AC_DEFINE_UNQUOTED(GETTEXT_PACKAGE, "$GETTEXT_PACKAGE",
        [The prefix for our gettext translation domains.])
# the 'malkovich' one is there for testing only
# ALL_LINGUAS="en_GB malkovich"
ALL_LINGUAS="en_GB"
AM_GLIB_GNU_GETTEXT

# Checks for libraries.

# build list of pkg-config packages we used here
PACKAGES_USED=""

# Checks for header files.
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_CHECK_HEADERS([errno.h math.h fcntl.h limits.h stdlib.h string.h sys/file.h sys/ioctl.h sys/param.h sys/time.h sys/mman.h sys/types.h sys/stat.h unistd.h io.h direct.h windows.h])

# uncomment to change which libs we build
# AC_DISABLE_SHARED
# AC_DISABLE_STATIC
AC_LIBTOOL_WIN32_DLL
AC_CHECK_TOOL(DLLWRAP, dllwrap)
AC_CHECK_TOOL(DLLTOOL, dlltool)
AC_CHECK_TOOL(OBJDUMP, objdump)
AC_CHECK_TOOL(RANLIB, ranlib)
AC_CHECK_TOOL(STRIP, strip)
AC_CHECK_TOOL(AR, ar)
AC_CHECK_TOOL(AS, as)
AC_CHECK_TOOL(LD, ld)
AC_PROVIDE(AC_LIBTOOL_WIN32_DLL)
AC_PROG_LIBTOOL

# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_SIZE_T

# Checks for library functions.
AC_FUNC_MEMCMP
AC_FUNC_MMAP
AC_FUNC_VPRINTF
AC_CHECK_FUNCS([getcwd gettimeofday getwd memset munmap putenv realpath strcasecmp strchr strcspn strdup strerror strrchr strspn vsnprintf realpath mkstemp mktemp random rand])
AC_CHECK_LIB(m,cbrt,[AC_DEFINE(HAVE_CBRT,1,[have cbrt() in libm.])])
AC_CHECK_LIB(m,hypot,[AC_DEFINE(HAVE_HYPOT,1,[have hypot() in libm.])])

# have to have these
# need glib 2.6 for GOption
PKG_CHECK_MODULES(REQUIRED, glib-2.0 >= 2.6 gmodule-2.0 >= 2.4 libxml-2.0 gobject-2.0)
PACKAGES_USED="$PACKAGES_USED glib-2.0 gmodule-2.0 libxml-2.0 gobject-2.0"

# option to eval without threads
AC_ARG_ENABLE(threads, 
  AS_HELP_STRING([--enable-threads], [evaluate with threads (default: yes)]))

if test x"$enable_threads" != "xno"; then
  AC_DEFINE(HAVE_THREADS,1,[threaded evaluation])
  PKG_CHECK_MODULES(GTHREAD, gthread-2.0)
  PACKAGES_USED="$PACKAGES_USED gthread-2.0"
  enable_threads=yes
fi

# optional supporting libraries

# we can wrap fftw3 and fftw2 ... but just look for fftw3, since we can do
# that with pkg-config
AC_ARG_WITH([fftw3], 
  AS_HELP_STRING([--without-fftw3], [build without fftw3 (default: test)]))

if test x"$with_fftw3" != "xno"; then
  PKG_CHECK_MODULES(FFTW3, fftw3,
    [AC_DEFINE(HAVE_FFTW3,1,[define if you have fftw3 installed.])
     with_fftw3=yes
     PACKAGES_USED="$PACKAGES_USED fftw3"],
    [AC_MSG_WARN([fftw3 not found; disabling fftw support]) 
     with_fftw3=no])
fi

# ImageMagick ... detect attribute iteration too
# Optionally look for GraphicsMagick instead ... use
# --with-magickpackage=GraphicsMagick
AC_ARG_WITH([magick], 
  AS_HELP_STRING([--without-magick], [build without libMagic (default: test)]))
AC_ARG_WITH([magickpackage], 
  AS_HELP_STRING([--with-magickpackage], 
    [magickpackage to use (default: MagickWand, ImageMagick)]))

# recent versions of ImageMagick have split parts of the library off to
# MagickWand, so by default we test for that first
if test x"$with_magickpackage" = "x"; then
  PKG_CHECK_MODULES(MAGICK_WAND, MagickWand,
    [with_magickpackage=MagickWand],
    [PKG_CHECK_MODULES(IMAGE_MAGICK, ImageMagick,
     [with_magickpackage=ImageMagick],)])
fi

if test x"$with_magick" != "xno"; then
  PKG_CHECK_MODULES(MAGICK, $with_magickpackage, 
    [AC_DEFINE(HAVE_MAGICK,1,[define if you have libMagick installed.])
     with_magick=yes
     PACKAGES_USED="$PACKAGES_USED $with_magickpackage"],
    [AC_MSG_WARN([libMagick not found; disabling Magick support])
     with_magick=no
    ])
fi

if test x"$with_magick" != "xno"; then
  # we need ResetImageAttributeIterator() / GetNextImageAttribute() to loop
  # over attrs, but that's 6.2+ I think ... test for them
  # graphicsmagick only has GetImageAttribute(), test for that as a fallback
  save_LIBS=$LIBS
  LIBS="$LIBS $MAGICK_LIBS"
  AC_CHECK_FUNCS(GetNextImageAttribute GetImageAttribute,
    AC_DEFINE(HAVE_MAGICK_ATTR,1,
	      [define if your magick has attribute support.]))
  LIBS=$save_LIBS
fi

# liboil
AC_ARG_WITH([liboil], 
  AS_HELP_STRING([--without-liboil], [build without liboil (default: test)]))

if test x"$with_liboil" != "xno"; then
  PKG_CHECK_MODULES(LIBOIL, liboil-0.3,
    [AC_DEFINE(HAVE_LIBOIL,1,[define if you have liboil-0.3 installed.])
     with_liboil=yes
     PACKAGES_USED="$PACKAGES_USED liboil-0.3"],
    [AC_MSG_WARN([liboil not found; disabling liboil support])
     with_liboil=no
    ])
fi

# lcms
AC_ARG_WITH([lcms], 
  AS_HELP_STRING([--without-lcms], [build without lcms (default: test)]))

if test x"$with_lcms" != "xno"; then
  PKG_CHECK_MODULES(LCMS, lcms,
    [AC_DEFINE(HAVE_LCMS,1,[define if you have lcms installed.])
     with_lcms=yes
     PACKAGES_USED="$PACKAGES_USED lcms"],
    [AC_MSG_WARN([lcms not found; disabling lcms support])
     with_lcms=no
    ])
fi

# OpenEXR
AC_ARG_WITH([OpenEXR], 
  AS_HELP_STRING([--without-OpenEXR], [build without OpenEXR (default: test)]))

# require 1.2.2 since 1.2.1 has a broken ImfCloseTiledInputFile()
if test x"$with_OpenEXR" != "xno"; then
  PKG_CHECK_MODULES(OPENEXR, OpenEXR >= 1.2.2,
    [AC_DEFINE(HAVE_OPENEXR,1,[define if you have OpenEXR >=1.2.2 installed.])
     with_OpenEXR=yes
     PACKAGES_USED="$PACKAGES_USED OpenEXR"],
    [AC_MSG_WARN([OpenEXR not found; disabling OpenEXR support])
     with_OpenEXR=no
    ])
fi

# pangoft2
AC_ARG_WITH([pangoft2], 
  AS_HELP_STRING([--without-pangoft2], 
    [build without pangoft2 (default: test)]))

if test x"$with_pangoft2" != "xno"; then
  PKG_CHECK_MODULES(PANGOFT2, pangoft2,
    [AC_DEFINE(HAVE_PANGOFT2,1,[define if you have pangoft2 installed.])
     with_pangoft2=yes
     PACKAGES_USED="$PACKAGES_USED pangoft2"],
    [AC_MSG_WARN([pangoft2 not found; disabling pangoft2 support])
     with_pangoft2=no
    ])
fi

# hmm, these don't have .pc files on ubuntu 5.10, how odd
FIND_TIFF(
  [with_tiff=yes],
  [AC_MSG_WARN([libtiff not found; disabling TIFF support])
   with_tiff=no
  ])
FIND_ZIP(
  [with_zip=yes],
  [AC_MSG_WARN([libz not found; disabling ZIP support])
   with_zip=no
  ])
FIND_JPEG(
  [with_jpeg=yes],
  [AC_MSG_WARN([libjpeg not found; disabling JPEG support])
   with_jpeg=no
  ])

# look for PNG with pkg-config ... fall back to our tester
AC_ARG_WITH([png], 
  AS_HELP_STRING([--without-png], [build without libpng (default: test)]))

if test x"$with_png" != "xno"; then
  PKG_CHECK_MODULES(PNG, libpng, 
    [AC_DEFINE(HAVE_PNG,1,[define if you have libpng installed.])
     with_png=yes
     PACKAGES_USED="$PACKAGES_USED libpng"],
    [FIND_PNG(,
     [AC_MSG_WARN([libpng not found; disabling PNG support])
      with_png=no
     ])
    ])
fi

# libexif
AC_ARG_WITH([libexif], 
  AS_HELP_STRING([--without-libexif], [build without libexif (default: test)]))

if test x"$with_libexif" != "xno"; then
  PKG_CHECK_MODULES(EXIF, libexif >= 0.6,
    [AC_DEFINE(HAVE_EXIF,1,[define if you have libexif >= 0.6 installed.])
     with_libexif=yes
     PACKAGES_USED="$PACKAGES_USED libexif"],
    [AC_MSG_WARN([libexif >= 0.6 not found; disabling exif support])
     with_libexif=no
    ])
fi

# some libexif packages need include <libexif/poop.h>, some just <poop.h>
# how annoying
if test x"$with_libexif" != "xno"; then
  # cppflags not cflags because we want the preproc to see the -I as well
  save_CPPFLAGS=$CPPFLAGS
  CPPFLAGS="$EXIF_CFLAGS $CPPFLAGS"
  AC_CHECK_HEADER(exif-data.h,
    AC_DEFINE(UNTAGGED_EXIF,1,[libexif includes don't need libexif prefix]))
  CPPFLAGS=$save_CPPFLAGS
fi

# Look for linux video
# try a compile as well: if we're using icc the header can break
AC_CHECK_HEADER(linux/videodev.h, 
  AC_TRY_COMPILE([#include <linux/videodev.h>], [struct video_capability vc;],
    with_videodev=yes))

if test x"$with_videodev" = x"yes"; then
  AC_DEFINE(HAVE_VIDEODEV,1,[have video4linux 1])
  with_v4l=yes
else
  AC_MSG_WARN([linux/videodev.h not functional; disabling Linux video support])
  with_v4l=no
fi

# make python binding?
AC_ARG_WITH([python], 
  AS_HELP_STRING([--without-python], 
    [build without Python bindings (default: test)]))

if test x"$with_python" != "xno"; then
  AM_PATH_PYTHON(2.2,,
    [with_python=no
     AC_MSG_WARN([Python not found; disabling Python binding])])
fi

if test x"$with_python" != "xno"; then
  AM_CHECK_PYTHON_HEADERS(,
    [with_python=no
     AC_MSG_WARN([Python headers not found])])
fi

# need SWIG too
if test x"$with_python" != "xno"; then
  AC_CHECK_PROG(HAVE_SWIG, swig, [yes])

  if test x"$HAVE_SWIG" != "xyes"; then
    with_python=no
    AC_MSG_WARN([SWIG not found; disabling Python binding])
  else
    with_python=yes
  fi
fi

if test x"$with_python" = "xyes"; then
  AM_CONDITIONAL(HAVE_PYTHON, true)
else
  AM_CONDITIONAL(HAVE_PYTHON, false)
fi

# make CImg wrapper? including C++ source causes link problems on some
# platforms, so have an option to disable it
AC_ARG_WITH([cimg], 
  AS_HELP_STRING([--without-cimg], [build without CImg (default: with-cimg)]))

if test x"$with_cimg" != "xno"; then
  AM_CONDITIONAL(WITH_CIMG, true)
  AC_DEFINE(WITH_CIMG,1,[include cimg package])

  # we have to explicitly link with stdc++ on mingw for some reason, yuk!
  if test x"$vips_os_win32" = "xyes"; then
    CIMG_LIBS=-lstdc++
  fi
  with_cimg=yes
else
  AM_CONDITIONAL(WITH_CIMG, false)
  AC_MSG_WARN([disabling CImg binding])
  with_cimg=no
fi

# Gather all up for VIPS_CFLAGS, VIPS_INCLUDES and VIPS_LIBS
# sort includes to get longer, more specific dirs first
# helps, for example, selecting graphicsmagick over imagemagick
VIPS_CFLAGS=`for i in $VIPS_CFLAGS $GTHREAD_CFLAGS $REQUIRED_CFLAGS $PANGOFT2_CFLAGS $FFTW3_CFLAGS $MAGICK_CFLAGS $PNG_CFLAGS $EXIF_CFLAGS $OPENEXR_CFLAGS $LIBOIL_CFLAGS
do
	echo $i
done | sort -ru`
VIPS_CFLAGS=`echo $VIPS_CFLAGS`
VIPS_INCLUDES="$PNG_INCLUDES $TIFF_INCLUDES $ZIP_INCLUDES $JPEG_INCLUDES $FFTW_INCLUDES $LCMS_INCLUDES" 
VIPS_LIBS="$MAGICK_LIBS $PNG_LIBS $TIFF_LIBS $ZIP_LIBS $JPEG_LIBS $GTHREAD_LIBS $REQUIRED_LIBS $PANGOFT2_LIBS $FFTW3_LIBS $FFTW_LIBS $LCMS_LIBS $LIBOIL_LIBS $OPENEXR_LIBS $EXIF_LIBS -lm $CIMG_LIBS"

AC_SUBST(VIPS_CFLAGS)
AC_SUBST(VIPS_INCLUDES)
AC_SUBST(VIPS_LIBS)
AC_SUBST(PACKAGES_USED)

AC_OUTPUT([
	vips-7.15.pc
	vipsCC-7.15.pc
	vips-7.15.spec
	Makefile 
	include/vips/version.h 
	include/Makefile 
	include/vips/Makefile 
	libsrc/Makefile 
	libsrc/acquire/Makefile 
	libsrc/arithmetic/Makefile 
	libsrc/boolean/Makefile 
	libsrc/cimg/Makefile 
	libsrc/colour/Makefile 
	libsrc/conversion/Makefile 
	libsrc/convolution/Makefile 
	libsrc/format/Makefile 
	libsrc/freq_filt/Makefile 
	libsrc/histograms_lut/Makefile 
	libsrc/inplace/Makefile 
	libsrc/iofuncs/Makefile 
	libsrc/matrix/Makefile 
	libsrc/morphology/Makefile 
	libsrc/mosaicing/Makefile 
	libsrc/other/Makefile 
	libsrc/relational/Makefile 
	libsrc/video/Makefile 
	libsrcCC/Makefile 
	src/Makefile 
	src/iofuncs/Makefile 
	src/mosaicing/Makefile 
	src/other/Makefile 
	src/scripts/Makefile 
	src/scripts/batch_crop 
	src/scripts/batch_image_convert 
	src/scripts/batch_rubber_sheet 
	src/scripts/light_correct 
	src/scripts/shrink_width 
	man/Makefile 
	contrib/Makefile 
	contrib/vips2dj/Makefile 
	contrib/vips2dj/share/Makefile 
	contrib/vips2dj/share/vips2dj/Makefile 
	contrib/vips2dj/share/vips2dj/lab/Makefile 
	contrib/vips2dj/share/vips2dj/cmyk/Makefile 
	contrib/vips2dj/share/vips2dj/mono/Makefile 
	contrib/vdump/Makefile 
	contrib/mitsub/Makefile 
	python/Makefile 
	python/vipsCC/Makefile 
	po/Makefile.in
])

AC_MSG_RESULT([
* general build options
native win32:				$vips_os_win32
open files in binary mode: 		$vips_binary_open
evaluate with threads: 			$enable_threads

* optional packages and modules
use fftw3 for FFT: 			$with_fftw3
Magick package: 			$with_magickpackage
file import with libMagick: 		$with_magick
accelerate loops with liboil: 		$with_liboil
ICC profile support with lcms: 		$with_lcms
file import with OpenEXR: 		$with_OpenEXR
text rendering with pangoft2: 		$with_pangoft2
file import/export with libpng: 	$with_png
file import/export with libtiff:	$with_tiff
file import/export with libjpeg:	$with_jpeg
use libexif to load/save JPEG metadata: $with_libexif
video capture with v4l: 		$with_v4l
build Python binding: 			$with_python
build CImg wrapper: 			$with_cimg
])