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# Copyright (C) 2006, 2007, 2008, 2009, 2010 EPITA Research and
# Development Laboratory (LRDE).
#
# This file is part of Olena.
#
# Olena is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, version 2 of the License.
#
# Olena is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Olena.  If not, see <http://www.gnu.org/licenses/>.
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m4_pattern_forbid([^OLN_])
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AC_PREREQ([2.61])
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## ---------------- ##
## Package set up.  ##
## ---------------- ##

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AC_INIT([Olena], [1.0a], [olena@lrde.epita.fr], [olena])
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# M4 macros.
AC_CONFIG_MACRO_DIR([m4])

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# Auxiliary files.
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_FILES([build-aux/Makefile])

# Automake.
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AM_INIT_AUTOMAKE([1.10 subdir-objects check-news dist-bzip2 nostdinc -Wall])
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# Package metadata.
AC_CONFIG_FILES([milena/mln/version.hh])
AC_DEFINE_UNQUOTED([OLN_PACKAGE_NAME], ["$PACKAGE_NAME"],
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		   [Package Full name.])
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AC_DEFINE_UNQUOTED([OLN_PACKAGE_BUGREPORT], ["$PACKAGE_BUGREPORT"],
		   [Bug report address.])
AC_DEFINE_UNQUOTED([OLN_PACKAGE_STRING], ["$PACKAGE_STRING"],
		   [Full name and version.])
AC_DEFINE_UNQUOTED([OLN_PACKAGE_VERSION], ["$PACKAGE_VERSION"],
		   [Package Version.])
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## --------------------- ##
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## C++ compiler set up.  ##
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## --------------------- ##

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# If the user doesn't provide any CXXFLAGS, prevent Autoconf from
# settings its own default ones (e.g., `-g -O2' for g++).
if test ! ${CXXFLAGS+set}; then
   CXXFLAGS=""
fi

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# Look for a C++ compiler.
AC_LANG([C++])
AC_PROG_CXX

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# Set `ICPC' to `yes' if the Intel C++ compiler is used.
test $CXX --version 2>/dev/null | grep '\bICC\b' >/dev/null 2>&1 && ICPC=yes

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# GNU C++ compiler setup.
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if test "$GXX" = yes; then
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  # Speed up compiling times.
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  CXXFLAGS="$CXXFLAGS -pipe"
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  # The code generated for mln::data::impl::memcpy__() by g++ 4.2 with
  # a high optimization level (`-O3') and without
  # `-fno-strict-aliasing' might be wrong, at least with Debian's g++
  # 4.2 on IA-32 (see also milena/mln/memcpy_.hh).  We observed this
  # behavior with e.g. milena/apps/graph-morpho/samples-image2d.cc.
  # Note that Debian's g++ 4.0, 4.1, 4.3 and 4.4 are fine.
  #
  # So, when the C++ compiler is g++ 4.2, set STRICT_ALIASING_CXXFLAGS
  # to `-fno-strict-aliasing'.
  if $CXX --version | head -n 1 | grep '\b4\.2' >/dev/null 2>&1; then
    STRICT_ALIASING_CXXFLAGS=-fno-strict-aliasing
  fi
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fi
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AC_SUBST([STRICT_ALIASING_CXXFLAGS])
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# Adjusting warning options according to compilers.
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AC_ARG_VAR([WARNINGS_CXXFLAGS], [C++ compiler warning flags])
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case "$CXX" in
     # Intel compiler
     *icpc*)
	WARNINGS_CXXFLAGS="-Wall -wd111,193,279,383,444,522,654,810,981,1418"
	;;
     *)
	WARNINGS_CXXFLAGS="-Wall -W"
	;;
esac


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# ------------------------------ #
# C++ compiler flags for tests.  #
# ------------------------------ #

# FIXME: We might want to write an Autoconf macro to factor this.

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# Standard flags for tests.
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AC_ARG_VAR([TESTS_CXXFLAGS], [C++ compiler flags for tests])
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# We want no optimization for the tests (it slows down compiling
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# times), and debugging information.
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if test -z "$TESTS_CXXFLAGS"; then
  if test "$GXX" = yes; then
    # GNU C++ compiler setup.
    TESTS_CXXFLAGS="-O0 -ggdb $WARNINGS_CXXFLAGS"
  elif test "$ICPC" = yes; then
    # Intel C++ compiler setup.
    TESTS_CXXFLAGS="-O0 -g $WARNINGS_CXXFLAGS"
  fi
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fi

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# Flags for complex tests.
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AC_ARG_VAR([TESTS_CXXFLAGS_SPEED],
           [C++ compiler optimization flags for (complex) tests])
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# We want optimization for complex tests, and keep debugging flags
# (still useful).
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if test -z "$TESTS_CXXFLAGS_SPEED"; then
  if test "$GXX" = yes; then
    # GNU C++ compiler setup.
    TESTS_CXXFLAGS_SPEED="-O3 -DNDEBUG -ggdb $WARNINGS_CXXFLAGS"
  elif test "$ICPC" = yes; then
    # Intel C++ compiler setup.
    TESTS_CXXFLAGS_SPEED="-O3 -DNDEBUG -g $WARNINGS_CXXFLAGS"
  fi
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fi

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# Flags for tests with with all debugging features turned on.
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AC_ARG_VAR([TESTS_CXXFLAGS_DEBUG], [C++ compiler debug flags])
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# We want no optimization for the tests (it slows down compiling
# times), and a lot of debugging features.
# * GNU C++ Library Debug Mode:
#   http://gcc.gnu.org/onlinedocs/libstdc++/manual/debug_mode.html
# * GNU C++ Library Compile Time Checks (a.k.a. concept checking):
#   http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt12ch29.html
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if test -z "$TESTS_CXXFLAGS_DEBUG"; then
  if test "$GXX" = yes; then
    TESTS_CXXFLAGS_DEBUG="-O0 -ggdb $WARNINGS_CXXFLAGS -D_GLIBCXX_DEBUG -D_GLIBCXX_CONCEPT_CHECKS"
  elif test "$ICPC" = yes; then
    TESTS_CXXFLAGS_DEBUG="-O0 -g $WARNINGS_CXXFLAGS -D_GLIBCXX_DEBUG -D_GLIBCXX_CONCEPT_CHECKS"
  fi
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fi


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## ------------------------------ ##
## ``Enable Everything'' Switch.  ##
## ------------------------------ ##

# Enable all bundled features (trimesh2, Swilena, apps, tools).  This
# option is useful to maintainers to ensure they do not break optional
# parts while modifying the core of the project. If both
# ``--enable-all'' is set and a given feature is disabled (say,
# ``--disable-apps''), then the disable flag has priority.

AC_ARG_ENABLE([all],
              [AS_HELP_STRING([--enable-all],
                              [enable maintainer mode])],
              [
               enable_trimesh=yes
               enable_swilena=yes
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dnl<<lrde
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               enable_scribo=yes
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dnl>>
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               enable_apps=yes
               enable_tools=yes
              ])
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## ------------------ ##
## Libraries set up.  ##
## ------------------ ##

# Use Libtool.
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# To be replaced by a call to LT_INIT as soon as Libtool 2.2 is used.
AC_PROG_LIBTOOL
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# Check for Darwin.
AC_CANONICAL_HOST
AM_CONDITIONAL([DARWIN], [echo "$host_os" | grep '^darwin'])

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## -------------------- ##
## External libraries.  ##
## -------------------- ##
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# Prepare calls to pkg-config
PKG_PROG_PKG_CONFIG
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### Support for FreeImagePlus has been disabled for Olena 1.0.
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## OLN_WITH_LIB([FreeImagePlus], [FreeImagePlus.h], [freeimageplus])
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# CFITSIO library.
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OLN_WITH_LIB([CFITSIO], [fitsio.h], [cfitsio])
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#------------------------------------------------------------
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# Magick++.
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# FIXME: We should handle Magick++ both with Magick++-config and
# pkg-config?  instead of OLN_WITH_LIB.  See how other projects handle
# this.
#OLN_WITH_LIB([Magick++], [Magick++.h], [Magick++], [magickxx], [MAGICKXX])

AC_ARG_WITH([magickxx],
    [AC_HELP_STRING([--with-magickxx],
                    [enable magickxx support (default)])],
        [with_magickxx=$withval],
        [with_magickxx='yes'])

if test "x$with_magickxx" != 'xyes'; then
    DISTCHECK_CONFIG_FLAGS="${DISTCHECK_CONFIG_FLAGS} --with-magickxx=$with_magickxx "
fi

have_magickxx='no'
MAGICKXX_CFLAGS=""
MAGICKXX_LIBS=""
MAGICKXX_PKG=""
if test "x$with_magickxx" = 'xyes'; then
    AC_MSG_RESULT([])
    AC_MSG_RESULT([* libMagick++])
    AC_MSG_RESULT([---------------])
    PKG_CHECK_MODULES(MAGICKXX,[ImageMagick++], have_magickxx=yes, have_magickxx=no)
    AC_MSG_RESULT([])
fi

if test "$have_magickxx" = 'yes'; then
   AC_DEFINE([HAVE_MAGICKXX], 1, [Define to 1 if we can use libMagick++])
   # Use standard variable names.
   MAGICKXX_CPPFLAGS="$MAGICKXX_CFLAGS"
   MAGICKXX_LDFLAGS="$MAGICKXX_LIBS"
   AC_SUBST(MAGICKXX_CPPFLAGS)
   AC_SUBST(MAGICKXX_LDFLAGS)
fi

AM_CONDITIONAL(HAVE_MAGICKXX, test "x$have_magickxx" = 'xyes')

#------------------------------------------------------------

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# TIFF library.
OLN_WITH_LIB([TIFF], [tiff.h], [tiff])

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# Grassroots DiCoM (GDCM).
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OLN_WITH_LIB([GDCM], [gdcm-2.0/gdcmReader.h], [gdcmCommon], [gdcm], [GDCM],
	     [-lgdcmzlib])
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# Tesseract.
OLN_WITH_LIB([TESSERACT], [tesseract/baseapi.h], [tesseract_full],
	     [tesseract], [TESSERACT])
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# Qt.
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AT_WITH_QT([+xml], [], [],
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	   AC_DEFINE([HAVE_QT], 0, [Define to 1 if we can use Qt]),
     	   AC_DEFINE([HAVE_QT], 1))
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AM_CONDITIONAL([HAVE_QT], [test x$QT_PATH != x])
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## ---------------------------- ##
## (Bundled) trimesh2 library.  ##
## ---------------------------- ##

AC_ARG_ENABLE([trimesh],
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              [AS_HELP_STRING([--enable-trimesh],
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                              [build the (bundled) trimesh2 library])])
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AM_CONDITIONAL([ENABLE_TRIMESH], [test "x$enable_trimesh" = xyes])
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AC_CONFIG_SUBDIRS([external/trimesh])

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## --------- ##
## Swilena.  ##
## --------- ##

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AC_ARG_ENABLE([swilena],
              [AS_HELP_STRING([--enable-swilena],
                              [build Swilena Python bindings])])
AS_IF([test "x$enable_swilena" = xyes],
      [# Ensure dynamic libraries are enabled.
       if test "x$enable_shared" = xno; then
         AC_MSG_ERROR([`--enable-swilena' was given, but dynamic libraries are
disabled.  Try to invoke configure with `--enable-shared'.])
       fi
       # Check for SWIG.
       AC_PROG_SWIG([1.3.35])
       if (eval "$SWIG -version") >/dev/null 2>&1; then :; else
         AC_MSG_ERROR([SWIG 1.3.35 is required for Swilena])
       fi
       # Check for Python.
       AM_PATH_PYTHON([2.4], [],
                      [AC_MSG_ERROR([Python 2.4 is required for Swilena.])])
       adl_CHECK_PYTHON
       # Check for Python headers.
       save_CPPFLAGS=$CPPFLAGS
       CPPFLAGS="$CPPFLAGS -I$PYTHONINC"
       AC_CHECK_HEADERS([Python.h], [],
                        [AC_MSG_ERROR([`Python.h' is required for Swilena.
Try adding `-I <Python include path>' to `CPPFLAGS'.])])
       CPPFLAGS=$save_CPPFLAGS])
AM_CONDITIONAL([ENABLE_SWILENA], [test "x$enable_swilena" = xyes])
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AC_CONFIG_FILES([swilena/Makefile
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		 swilena/python/Makefile])
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AC_CONFIG_FILES([swilena/run], [chmod +x swilena/run])

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AC_CONFIG_FILES(m4_do([swilena/python/sps],
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		      [:swilena/python/sps-common.in],
		      [:swilena/python/sps.in]),
		[chmod +x swilena/python/sps])
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AC_CONFIG_FILES(m4_do([swilena/python/sps-local],
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		      [:swilena/python/sps-common.in],
		      [:swilena/python/sps-local.in]),
		[chmod +x swilena/python/sps-local])
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## -------- ##
## Scribo.  ##
## -------- ##

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AC_ARG_ENABLE([scribo],
              [AS_HELP_STRING([--enable-scribo],
                              [enable Scribo])])
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AM_CONDITIONAL([ENABLE_SCRIBO], [test "x$enable_scribo" = xyes])
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AC_CONFIG_FILES([
  scribo/Makefile
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    scribo/demo/Makefile
      scribo/demo/review/Makefile
      scribo/demo/viewer/Makefile
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    scribo/src/Makefile
      scribo/src/binarization/Makefile
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      scribo/src/contest/Makefile
      scribo/src/contest/hdibco-2010/Makefile
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      scribo/src/debug/Makefile
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      scribo/src/filter/Makefile
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      scribo/src/misc/Makefile
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      scribo/src/postprocessing/Makefile
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      scribo/src/preprocessing/Makefile
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      scribo/src/primitive/Makefile
	scribo/src/primitive/extract/Makefile
	scribo/src/primitive/find/Makefile
        scribo/src/primitive/group/Makefile
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      scribo/src/table/Makefile
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      scribo/src/text/Makefile
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])

AC_CONFIG_FILES([scribo/tests/data.hh])

AC_CONFIG_FILES([
  scribo/tests/Makefile
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    scribo/tests/binarization/Makefile
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    scribo/tests/core/Makefile
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    scribo/tests/filter/Makefile
    scribo/tests/preprocessing/Makefile
    scribo/tests/table/Makefile
    scribo/tests/text/Makefile
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    scribo/tests/toolchain/Makefile
    scribo/tests/toolchain/nepomuk/Makefile
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    scribo/tests/unit_test/Makefile
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])
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# Flags for Scribo
AC_ARG_VAR([SCRIBO_CXXFLAGS], [C++ compiler flags for Scribo binaries])
AC_ARG_VAR([SCRIBO_TESTS_CXXFLAGS], [C++ compiler flags for Scribo tests])
if test "$GXX" = yes || test "$ICPC" = yes; then
  test -z "$SCRIBO_CXXFLAGS" && SCRIBO_CXXFLAGS="-DNDEBUG -O2"
  # FIXME: We might want to use -ggdb when g++ is used.
  test -z "$SCRIBO_TESTS_CXXFLAGS" && SCRIBO_TESTS_CXXFLAGS="-g -O0"
fi
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dnl>>
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## --------------- ##
## Configuration.  ##
## --------------- ##

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# Ask for config.h creation.
AC_CONFIG_HEADERS([config.h])
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# Ask for the creation of a milena/doc/tool/data.hh, used to access to
# data (images) from the documentation.
AC_CONFIG_FILES([milena/doc/tools/data.hh])

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# Ask for the Makefile creations.
AC_CONFIG_FILES([
  Makefile
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    external/Makefile
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    milena/Makefile
      milena/doc/Makefile
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      milena/mesh/Makefile
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])
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## ------- ##
## Tests.  ##
## ------- ##

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# Ask for the creation of a milena/tests/data.hh, used to access to
# data (images) from tests.
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AC_CONFIG_FILES([milena/tests/data.hh])

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# Ask for the creation of tests' Makefiles.
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AC_CONFIG_FILES([
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  milena/tests/Makefile
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    milena/tests/accu/Makefile
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    milena/tests/accu/image/Makefile
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    milena/tests/accu/site_set/Makefile
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    milena/tests/accu/stat/Makefile
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    milena/tests/accu/math/Makefile
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    milena/tests/accu/shape/Makefile
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    milena/tests/algebra/Makefile
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    milena/tests/arith/Makefile
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    milena/tests/binarization/Makefile
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    milena/tests/border/Makefile
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    milena/tests/canvas/Makefile
      milena/tests/canvas/browsing/Makefile
      milena/tests/canvas/morpho/Makefile
    milena/tests/convert/Makefile
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    milena/tests/convert/impl/Makefile
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    milena/tests/core/Makefile
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      milena/tests/core/alias/Makefile
      milena/tests/core/image/Makefile
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	milena/tests/core/image/dmorph/Makefile
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	milena/tests/core/image/imorph/Makefile
	milena/tests/core/image/vmorph/Makefile
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      milena/tests/core/other/Makefile
      milena/tests/core/routine/Makefile
      milena/tests/core/site_set/Makefile
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    milena/tests/data/Makefile
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      milena/tests/data/approx/Makefile
      milena/tests/data/naive/Makefile
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    milena/tests/debug/Makefile
    milena/tests/display/Makefile
    milena/tests/draw/Makefile
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    milena/tests/estim/Makefile
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    milena/tests/extension/Makefile
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      milena/tests/fun/i2v/Makefile
      milena/tests/fun/p2b/Makefile
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      milena/tests/fun/p2v/Makefile
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      milena/tests/fun/stat/Makefile
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      milena/tests/fun/v2v/Makefile
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      milena/tests/fun/vv2v/Makefile
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      milena/tests/fun/x2x/Makefile
    milena/tests/geom/Makefile
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    milena/tests/graph/Makefile
      milena/tests/graph/attribute/Makefile
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    milena/tests/histo/Makefile
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    milena/tests/io/Makefile
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      milena/tests/io/dicom/Makefile
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      milena/tests/io/dump/Makefile
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      milena/tests/io/fits/Makefile
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      milena/tests/io/magick/Makefile
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      milena/tests/io/off/Makefile
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      milena/tests/io/pbm/Makefile
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      milena/tests/io/pfm/Makefile
      milena/tests/io/pgm/Makefile
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      milena/tests/io/pgms/Makefile
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      milena/tests/io/pnm/Makefile
      milena/tests/io/ppm/Makefile
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      milena/tests/io/ppms/Makefile
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      milena/tests/io/tiff/Makefile
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    milena/tests/labeling/Makefile
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    milena/tests/linear/Makefile
      milena/tests/linear/local/Makefile
    milena/tests/literal/Makefile
    milena/tests/logical/Makefile
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    milena/tests/make/Makefile
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    milena/tests/math/Makefile
    milena/tests/metal/Makefile
      milena/tests/metal/make/Makefile
      milena/tests/metal/math/Makefile
    milena/tests/morpho/Makefile
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      milena/tests/morpho/approx/Makefile
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      milena/tests/morpho/attribute/Makefile
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      milena/tests/morpho/closing/Makefile
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      milena/tests/morpho/closing/approx/Makefile
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      milena/tests/morpho/elementary/Makefile
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      milena/tests/morpho/opening/Makefile
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      milena/tests/morpho/opening/approx/Makefile
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      milena/tests/morpho/reconstruction/Makefile
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        milena/tests/morpho/reconstruction/by_dilation/Makefile
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        milena/tests/morpho/reconstruction/by_erosion/Makefile
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      milena/tests/morpho/tree/Makefile
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	milena/tests/morpho/tree/filter/Makefile
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      milena/tests/morpho/watershed/Makefile
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    milena/tests/norm/Makefile
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    milena/tests/opt/Makefile
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    milena/tests/pw/Makefile
    milena/tests/set/Makefile
    milena/tests/tag/Makefile
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    milena/tests/test/Makefile
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    milena/tests/topo/Makefile
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      milena/tests/topo/skeleton/Makefile
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    milena/tests/trace/Makefile
    milena/tests/trait/Makefile
      milena/tests/trait/image/Makefile
      milena/tests/trait/op/Makefile
      milena/tests/trait/value/Makefile
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    milena/tests/upscaling/Makefile
      milena/tests/upscaling/art/Makefile
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    milena/tests/util/Makefile
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    milena/tests/value/Makefile
      milena/tests/value/builtin/Makefile
      milena/tests/value/concept/Makefile
    milena/tests/win/Makefile
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    milena/tests/world/Makefile
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      milena/tests/world/binary_2d/Makefile
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      milena/tests/world/inter_pixel/Makefile
	milena/tests/world/inter_pixel/dim2/Makefile
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])
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dnl<<lrde
AC_CONFIG_FILES([
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  milena/tests/extract/Makefile
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  milena/tests/linear/gaussian/Makefile
  milena/tests/registration/Makefile
  milena/tests/subsampling/Makefile
])
dnl>>

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## -------------- ##
## Applications.  ##
## -------------- ##

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# Ask for the creation of a milena/apps/data.hh, used to access to
# data (images) from apps.
AC_CONFIG_FILES([milena/apps/data.hh])

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AC_ARG_ENABLE([apps],
              [AS_HELP_STRING([--enable-apps],
                              [enable application])])
AM_CONDITIONAL([ENABLE_APPS], [test "x$enable_apps" = "xyes"])

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# Ask for the creation of applications' Makefiles.
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AC_CONFIG_FILES([
  milena/apps/Makefile
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    milena/apps/constrained-connectivity/Makefile
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    milena/apps/graph-morpho/Makefile
    milena/apps/mesh-segm-skel/Makefile
    milena/apps/papers/Makefile
      milena/apps/papers/levillain.09.ismm/Makefile
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])
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# Configure tests.
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# FIXME: Consider using `sed' instead of `configure' to create these
# tests for the sake of speed.
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AC_CONFIG_FILES([milena/apps/mesh-segm-skel/test-mesh-max-curv],
		[chmod +x milena/apps/mesh-segm-skel/test-mesh-max-curv])
AC_CONFIG_FILES([milena/apps/mesh-segm-skel/test-mesh-complex-max-curv],
		[chmod +x milena/apps/mesh-segm-skel/test-mesh-complex-max-curv])
AC_CONFIG_FILES([milena/apps/mesh-segm-skel/test-mesh-segm],
		[chmod +x milena/apps/mesh-segm-skel/test-mesh-segm])
AC_CONFIG_FILES([milena/apps/mesh-segm-skel/test-mesh-complex-segm],
		[chmod +x milena/apps/mesh-segm-skel/test-mesh-complex-segm])
AC_CONFIG_FILES([milena/apps/mesh-segm-skel/test-mesh-complex-max-curv-segm],
		[chmod +x milena/apps/mesh-segm-skel/test-mesh-complex-max-curv-segm])
AC_CONFIG_FILES([milena/apps/mesh-segm-skel/test-mesh-complex-skel],
		[chmod +x milena/apps/mesh-segm-skel/test-mesh-complex-skel])
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AC_CONFIG_FILES([milena/apps/constrained-connectivity/test-constrained-connectivity],
		[chmod +x milena/apps/constrained-connectivity/test-constrained-connectivity])

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# Flags for apps.
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AC_ARG_VAR([APPS_CXXFLAGS], [C++ compiler flags for applications])
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# We want fast binaries for apps.
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if test -z "$APPS_CXXFLAGS"; then
  if test "$GXX" = yes; then
    APPS_CXXFLAGS="-O3 -DNDEBUG -ggdb $WARNINGS_CXXFLAGS"
  elif test "$ICPC" = yes; then
    APPS_CXXFLAGS="-O3 -DNDEBUG -g $WARNINGS_CXXFLAGS"
  fi
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fi

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## ------- ##
## Tools.  ##
## ------- ##

AC_ARG_ENABLE([tools],
              [AS_HELP_STRING([--enable-tools],
                              [enable tools])])
AM_CONDITIONAL([ENABLE_TOOLS], [test "x$enable_tools" = "xyes"])

# Ask for the creation of tools' Makefiles.
AC_CONFIG_FILES([milena/tools/Makefile])

# Flags for tools.
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AC_ARG_VAR([TOOLS_CXXFLAGS], [C++ compiler flags for tools])
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# We want fast binaries for tools.
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if test -z "$TOOLS_CXXFLAGS"; then
  if test "$GXX" = yes; then
    TOOLS_CXXFLAGS="-O3 -DNDEBUG -ggdb $WARNINGS_CXXFLAGS"
  elif test "$ICPC" = yes; then
    TOOLS_CXXFLAGS="-O3 -DNDEBUG -g $WARNINGS_CXXFLAGS"
  fi
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fi


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AC_OUTPUT