--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/tesseract/configure.ac	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,633 @@
+# -*-Shell-script-*-
+#
+# Copyright (c) Luc Vincent
+
+# ----------------------------------------
+# Initialization
+# ----------------------------------------
+AC_PREREQ([2.69])
+AC_INIT([tesseract],
+        [m4_esyscmd_s([test -d .git && git describe --abbrev=4 2>/dev/null || cat VERSION])],
+        [https://github.com/tesseract-ocr/tesseract/issues],,
+        [https://github.com/tesseract-ocr/tesseract/])
+
+# Store command like options for CXXFLAGS
+OLD_CXXFLAGS=$CXXFLAGS
+AC_PROG_CXX([g++ clang++])
+# reset compiler flags to initial flags
+AC_LANG([C++])
+AC_LANG_COMPILER_REQUIRE
+CXXFLAGS=${CXXFLAGS:-""}
+AC_CONFIG_MACRO_DIR([m4])
+AC_CONFIG_AUX_DIR([config])
+AC_CONFIG_SRCDIR([src/tesseract.cpp])
+AC_PREFIX_DEFAULT([/usr/local])
+
+# Automake configuration. Do not require README file (we use README.md).
+AM_INIT_AUTOMAKE([foreign subdir-objects nostdinc])
+
+# Define date of package, etc. Could be useful in auto-generated
+# documentation.
+PACKAGE_YEAR=2024
+PACKAGE_DATE="11/10"
+
+abs_top_srcdir=`AS_DIRNAME([$0])`
+
+AC_DEFINE_UNQUOTED([PACKAGE_NAME], ["${PACKAGE_NAME}"], [Name of package])
+AC_DEFINE_UNQUOTED([PACKAGE_VERSION], ["${PACKAGE_VERSION}"], [Version number])
+AC_DEFINE_UNQUOTED([PACKAGE_YEAR], ["$PACKAGE_YEAR"], [Official year for this release])
+AC_DEFINE_UNQUOTED([PACKAGE_DATE], ["$PACKAGE_DATE"], [Official date of release])
+
+AC_SUBST([PACKAGE_NAME])
+AC_SUBST([PACKAGE_VERSION])
+AC_SUBST([PACKAGE_YEAR])
+AC_SUBST([PACKAGE_DATE])
+
+GENERIC_LIBRARY_NAME=tesseract
+
+# Release versioning. Get versions from PACKAGE_VERSION.
+AX_SPLIT_VERSION
+GENERIC_MAJOR_VERSION=$(echo "$AX_MAJOR_VERSION" | $SED 's/^[[^0-9]]*//')
+GENERIC_MINOR_VERSION=$AX_MINOR_VERSION
+GENERIC_MICRO_VERSION=`echo "$AX_POINT_VERSION" | $SED 's/^\([[0-9]][[0-9]]*\).*/\1/'`
+
+# API version (often = GENERIC_MAJOR_VERSION.GENERIC_MINOR_VERSION)
+GENERIC_API_VERSION=$GENERIC_MAJOR_VERSION.$GENERIC_MINOR_VERSION
+GENERIC_LIBRARY_VERSION=$GENERIC_MAJOR_VERSION:$GENERIC_MINOR_VERSION
+AC_SUBST([GENERIC_API_VERSION])
+AC_SUBST([GENERIC_MAJOR_VERSION])
+AC_SUBST([GENERIC_MINOR_VERSION])
+AC_SUBST([GENERIC_MICRO_VERSION])
+
+AC_SUBST([GENERIC_LIBRARY_VERSION])
+PACKAGE=$GENERIC_LIBRARY_NAME
+AC_SUBST([GENERIC_LIBRARY_NAME])
+
+GENERIC_VERSION=$GENERIC_MAJOR_VERSION.$GENERIC_MINOR_VERSION.$GENERIC_MICRO_VERSION
+GENERIC_RELEASE=$GENERIC_MAJOR_VERSION.$GENERIC_MINOR_VERSION
+AC_SUBST([GENERIC_RELEASE])
+AC_SUBST([GENERIC_VERSION])
+
+AC_CONFIG_HEADERS([include/config_auto.h:config/config.h.in])
+
+# default conditional
+AM_CONDITIONAL([T_WIN], false)
+AM_CONDITIONAL([MINGW], false)
+AM_CONDITIONAL([GRAPHICS_DISABLED], false)
+AC_SUBST([AM_CPPFLAGS])
+
+# Be less noisy by default.
+# Can be overridden with `configure --disable-silent-rules` or with `make V=1`.
+AM_SILENT_RULES([yes])
+
+#############################
+#
+# Platform specific setup
+#
+#############################
+AC_CANONICAL_HOST
+case "${host_os}" in
+    mingw*)
+        AC_DEFINE_UNQUOTED([MINGW], 1, [This is a MinGW system])
+        AM_CONDITIONAL([T_WIN], true)
+        AM_CONDITIONAL([MINGW], true)
+        AM_CONDITIONAL([ADD_RT], false)
+        AC_SUBST([AM_LDFLAGS], ['-no-undefined'])
+        ;;
+    cygwin*)
+        AM_CONDITIONAL([ADD_RT], false)
+        AC_SUBST([NOUNDEFINED], ['-no-undefined'])
+        ;;
+    solaris*)
+        LIBS="$LIBS -lsocket -lnsl -lrt -lxnet"
+        AM_CONDITIONAL([ADD_RT], true)
+        ;;
+    *darwin*)
+        AM_CONDITIONAL([ADD_RT], false)
+        ;;
+    *android*|openbsd*)
+        AM_CONDITIONAL([ADD_RT], false)
+        ;;
+    powerpc-*-darwin*)
+        ;;
+    *)
+        # default
+        AM_CONDITIONAL([ADD_RT], true)
+        ;;
+esac
+
+WERROR=-Werror
+# The test code used by AX_CHECK_COMPILE_FLAG uses an empty statement
+# and unused macros which must not raise a compiler error, but it must
+# be an error if flags like -avx are ignored on ARM and other
+# architectures because they are unsupported.
+AX_CHECK_COMPILE_FLAG([-Werror=unused-command-line-argument], [WERROR=-Werror=unused-command-line-argument])
+
+## Checks for supported compiler options.
+
+AM_CONDITIONAL([HAVE_AVX], false)
+AM_CONDITIONAL([HAVE_AVX2], false)
+AM_CONDITIONAL([HAVE_AVX512F], false)
+AM_CONDITIONAL([HAVE_FMA], false)
+AM_CONDITIONAL([HAVE_SSE4_1], false)
+AM_CONDITIONAL([HAVE_NEON], false)
+AM_CONDITIONAL([HAVE_RVV], false)
+
+case "${host_cpu}" in
+
+  amd64|*86*)
+
+    AX_CHECK_COMPILE_FLAG([-mavx], [avx=true], [avx=false], [$WERROR])
+    AM_CONDITIONAL([HAVE_AVX], ${avx})
+    if $avx; then
+      AC_DEFINE([HAVE_AVX], [1], [Enable AVX instructions])
+    fi
+
+    AX_CHECK_COMPILE_FLAG([-mavx2], [avx2=true], [avx2=false], [$WERROR])
+    AM_CONDITIONAL([HAVE_AVX2], $avx2)
+    if $avx2; then
+      AC_DEFINE([HAVE_AVX2], [1], [Enable AVX2 instructions])
+    fi
+
+    AX_CHECK_COMPILE_FLAG([-mavx512f], [avx512f=true], [avx512f=false], [$WERROR])
+    AM_CONDITIONAL([HAVE_AVX512F], $avx512f)
+    if $avx512f; then
+      AC_DEFINE([HAVE_AVX512F], [1], [Enable AVX512F instructions])
+    fi
+
+    AX_CHECK_COMPILE_FLAG([-mfma], [fma=true], [fma=false], [$WERROR])
+    AM_CONDITIONAL([HAVE_FMA], $fma)
+    if $fma; then
+      AC_DEFINE([HAVE_FMA], [1], [Enable FMA instructions])
+    fi
+
+    AX_CHECK_COMPILE_FLAG([-msse4.1], [sse41=true], [sse41=false], [$WERROR])
+    AM_CONDITIONAL([HAVE_SSE4_1], $sse41)
+    if $sse41; then
+      AC_DEFINE([HAVE_SSE4_1], [1], [Enable SSE 4.1 instructions])
+    fi
+
+    ;;
+
+  aarch64*|arm64)
+
+    # ARMv8 always has NEON and does not need special compiler flags.
+    AM_CONDITIONAL([HAVE_NEON], true)
+    AC_DEFINE([HAVE_NEON], [1], [Enable NEON instructions])
+    ;;
+
+  arm*)
+
+    AX_CHECK_COMPILE_FLAG([-mfpu=neon], [neon=true], [neon=false], [$WERROR])
+    AM_CONDITIONAL([HAVE_NEON], $neon)
+    if $neon; then
+      AC_DEFINE([HAVE_NEON], [1], [Enable NEON instructions])
+      NEON_CXXFLAGS="-mfpu=neon"
+      AC_SUBST([NEON_CXXFLAGS])
+      check_for_neon=1
+    fi
+
+    ;;
+
+  riscv*)
+
+    AX_CHECK_COMPILE_FLAG([-march=rv64gcv], [rvv=true], [rvv=false], [$WERROR])
+    AM_CONDITIONAL([HAVE_RVV], [$rvv])
+    if $rvv; then
+      AC_DEFINE([HAVE_RVV], [1], [Enable RVV instructions])
+      check_for_rvv=1
+    fi
+    ;;
+
+  *)
+
+    AC_MSG_WARN([No compiler options for $host_cpu])
+
+esac
+
+# check whether feenableexcept is supported. some C libraries (e.g. uclibc) don't.
+AC_CHECK_FUNCS([feenableexcept])
+
+# additional checks for NEON targets
+if test x$check_for_neon = x1; then
+  AC_MSG_NOTICE([checking how to detect NEON availability])
+  AC_CHECK_FUNCS([getauxval elf_aux_info android_getCpuFamily])
+
+  if test $ac_cv_func_getauxval = no && test $ac_cv_func_elf_aux_info = no && test $ac_cv_func_android_getCpuFamily = no; then
+      AC_MSG_WARN([NEON is available, but we don't know how to check for it.  Will not be able to use NEON.])
+  fi
+fi
+
+# additional checks for RVV targets
+if test x$check_for_rvv = x1; then
+  AC_MSG_NOTICE([checking how to detect RVV availability])
+  AC_CHECK_FUNCS([getauxval])
+
+  if test $ac_cv_func_getauxval = no; then
+      AC_MSG_WARN([RVV is available, but we don't know how to check for it.  Will not be able to use RVV.])
+  fi
+fi
+
+AX_CHECK_COMPILE_FLAG([-fopenmp-simd], [openmp_simd=true], [openmp_simd=false], [$WERROR])
+AM_CONDITIONAL([OPENMP_SIMD], $openmp_simd)
+
+AC_ARG_WITH([extra-includes],
+            [AS_HELP_STRING([--with-extra-includes=DIR],
+                       [Define an additional directory for include files])],
+            [if test -d "$withval" ; then
+               CFLAGS="$CFLAGS -I$withval"
+             else
+               AC_MSG_ERROR([Cannot stat directory $withval])
+             fi])
+
+AC_ARG_WITH([extra-libraries],
+            [AS_HELP_STRING([--with-extra-libraries=DIR],
+                       [Define an additional directory for library files])],
+            [if test -d "$withval" ; then
+              LDFLAGS="$LDFLAGS -L$withval"
+             else
+               AC_MSG_ERROR([Cannot stat directory $withval])
+             fi])
+
+AC_MSG_CHECKING([--enable-float32 argument])
+AC_ARG_ENABLE([float32],
+	      AS_HELP_STRING([--disable-float32], [disable float and enable double for LSTM]))
+AC_MSG_RESULT([$enable_float32])
+if test "$enable_float32" != "no"; then
+  AC_DEFINE([FAST_FLOAT], [1], [Enable float for LSTM])
+fi
+
+AC_MSG_CHECKING([--enable-graphics argument])
+AC_ARG_ENABLE([graphics],
+  AS_HELP_STRING([--disable-graphics], [disable graphics (ScrollView)]))
+AC_MSG_RESULT([$enable_graphics])
+if test "$enable_graphics" = "no"; then
+  AC_DEFINE([GRAPHICS_DISABLED], [], [Disable graphics])
+  AM_CONDITIONAL([GRAPHICS_DISABLED], true)
+fi
+
+AC_MSG_CHECKING([--enable-legacy argument])
+AC_ARG_ENABLE([legacy],
+  AS_HELP_STRING([--disable-legacy], [disable the legacy OCR engine]))
+AC_MSG_RESULT([$enable_legacy])
+AM_CONDITIONAL([DISABLED_LEGACY_ENGINE], test "$enable_legacy" = "no")
+if test "$enable_legacy" = "no"; then
+  AC_DEFINE([DISABLED_LEGACY_ENGINE], [1], [Disable legacy OCR engine])
+fi
+
+# check whether to build OpenMP support
+AC_OPENMP
+
+have_tiff=false
+# Note that the first usage of AC_CHECK_HEADERS must be unconditional.
+AC_CHECK_HEADERS([tiffio.h], [have_tiff=true], [have_tiff=false])
+
+# Configure arguments which allow disabling some optional libraries.
+AC_ARG_WITH([archive],
+            AS_HELP_STRING([--with-archive],
+                           [Build with libarchive which supports compressed model files @<:@default=check@:>@]),
+            [], [with_archive=check])
+AC_ARG_WITH([curl],
+            AS_HELP_STRING([--with-curl],
+                           [Build with libcurl which supports processing an image URL @<:@default=check@:>@]),
+            [], [with_curl=check])
+
+# https://lists.apple.com/archives/unix-porting/2009/Jan/msg00026.html
+m4_define([MY_CHECK_FRAMEWORK],
+  [AC_CACHE_CHECK([if -framework $1 works],[my_cv_framework_$1],
+     [save_LIBS="$LIBS"
+     LIBS="$LIBS -framework $1"
+     AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
+             [my_cv_framework_$1=yes],
+            [my_cv_framework_$1=no])
+     LIBS="$save_LIBS"
+    ])
+   if test "$my_cv_framework_$1"="yes"; then
+     AC_DEFINE(AS_TR_CPP([HAVE_FRAMEWORK_$1]), 1,
+            [Define if you have the $1 framework])
+     AS_TR_CPP([FRAMEWORK_$1])="-framework $1"
+     AC_SUBST(AS_TR_CPP([FRAMEWORK_$1]))
+   fi]
+)
+
+case "${host_os}" in
+  *darwin* | *-macos10*)
+    MY_CHECK_FRAMEWORK([Accelerate])
+    if test $my_cv_framework_Accelerate = yes; then
+      AM_CPPFLAGS="-DHAVE_FRAMEWORK_ACCELERATE $AM_CPPFLAGS"
+      AM_LDFLAGS="$AM_LDFLAGS -framework Accelerate"
+    fi
+    ;;
+  *)
+    # default
+    ;;
+esac
+
+# check whether to build tesseract with -fvisibility=hidden -fvisibility-inlines-hidden
+# http://gcc.gnu.org/wiki/Visibility
+# https://groups.google.com/g/tesseract-dev/c/l2ZFrpgYkSc/m/_cdYSRDSXuUJ
+AC_MSG_CHECKING([--enable-visibility argument])
+AC_ARG_ENABLE([visibility],
+  AS_HELP_STRING([--enable-visibility],
+                 [enable experimental build with -fvisibility [default=no]]))
+AC_MSG_RESULT([$enable_visibility])
+AM_CONDITIONAL([VISIBILITY], [test "$enable_visibility" = "yes"])
+
+# Check if tessdata-prefix is disabled
+AC_MSG_CHECKING([whether to use tessdata-prefix])
+AC_ARG_ENABLE([tessdata-prefix],
+    [AS_HELP_STRING([--disable-tessdata-prefix],
+            [don't set TESSDATA-PREFIX during compile])],
+    [tessdata_prefix="no"], [tessdata_prefix="yes"])
+AC_MSG_RESULT([$tessdata_prefix])
+AM_CONDITIONAL([NO_TESSDATA_PREFIX], [test "$tessdata_prefix" = "no"])
+
+
+# Detect Clang compiler
+AC_MSG_CHECKING([if compiling with clang])
+AC_COMPILE_IFELSE(
+[AC_LANG_PROGRAM([], [[
+#ifndef __clang__
+       not clang
+#endif
+]])],
+[CLANG=yes], [CLANG=no])
+AC_MSG_RESULT([$CLANG])
+
+# Check whether to enable debugging
+AC_MSG_CHECKING([whether to enable debugging])
+AC_ARG_ENABLE([debug],
+  AS_HELP_STRING([--enable-debug], [turn on debugging [default=no]]))
+AC_MSG_RESULT([$enable_debug])
+if test x"$enable_debug" = x"yes"; then
+    CXXFLAGS=${CXXFLAGS:-"-O2"}
+    AM_CPPFLAGS="$AM_CPPFLAGS -g -Wall -DDEBUG -pedantic"
+    AM_CXXFLAGS="$AM_CXXFLAGS -g -Wall -DDEBUG -pedantic"
+    if test "x$CLANG" = "xyes"; then
+        # https://clang.llvm.org/docs/CommandGuide/clang.html
+        # clang treats -Og as -O1
+        AM_CPPFLAGS="$AM_CPPFLAGS -O0"
+        AM_CXXFLAGS="$AM_CXXFLAGS -O0"
+    else
+        AM_CPPFLAGS="$AM_CPPFLAGS -Og"
+        AM_CXXFLAGS="$AM_CXXFLAGS -Og"
+    fi
+else
+    AM_CXXFLAGS="$AM_CXXFLAGS -O2 -DNDEBUG"
+    AM_CPPFLAGS="$AM_CPPFLAGS -O2 -DNDEBUG"
+fi
+
+# ----------------------------------------
+# Init libtool
+# ----------------------------------------
+
+LT_INIT
+
+
+# ----------------------------------------
+# C++ related options
+# ----------------------------------------
+dnl **********************
+dnl Turn on C++17 or newer
+dnl **********************
+
+CPLUSPLUS=
+AX_CHECK_COMPILE_FLAG([-std=c++17], [CPLUSPLUS=17], [], [$WERROR])
+AX_CHECK_COMPILE_FLAG([-std=c++20], [CPLUSPLUS=20], [], [$WERROR])
+
+if test -z "$CPLUSPLUS"; then
+  AC_MSG_ERROR([Your compiler does not have the necessary C++17 support! Cannot proceed.])
+fi
+
+# Set C++17 or newer support based on platform/compiler
+case "${host_os}" in
+  cygwin*)
+    CXXFLAGS="$CXXFLAGS -std=gnu++$CPLUSPLUS"
+    ;;
+  *-darwin* | *-macos10*)
+    CXXFLAGS="$CXXFLAGS -std=c++$CPLUSPLUS"
+    if test "x$CLANG" = "xyes"; then
+      LDFLAGS="$LDFLAGS -stdlib=libc++"
+    fi
+    ;;
+  *)
+    # default
+    CXXFLAGS="$CXXFLAGS -std=c++$CPLUSPLUS"
+    ;;
+esac
+
+
+# ----------------------------------------
+# Check for libraries
+# ----------------------------------------
+
+AC_SEARCH_LIBS([pthread_create], [pthread])
+
+# Set PKG_CONFIG_PATH for macOS with Homebrew unless it is already set.
+AC_CHECK_PROG([have_brew], brew, true, false)
+if $have_brew; then
+  brew_prefix=$(brew --prefix)
+  if test -z "$PKG_CONFIG_PATH"; then
+    PKG_CONFIG_PATH=$brew_prefix/opt/icu4c/lib/pkgconfig:$brew_prefix/opt/libarchive/lib/pkgconfig
+    export PKG_CONFIG_PATH
+  fi
+fi
+
+# ----------------------------------------
+# Check for programs needed to build documentation.
+# ----------------------------------------
+
+AM_CONDITIONAL([ASCIIDOC], false)
+AM_CONDITIONAL([HAVE_XML_CATALOG_FILES], false)
+AC_ARG_ENABLE([doc],
+              AS_HELP_STRING([--disable-doc], [disable build of documentation])
+              [],
+              [: m4_divert_text([DEFAULTS], [enable_doc=check])])
+AS_IF([test "$enable_doc" != "no"], [
+  AC_CHECK_PROG([have_asciidoc], asciidoc, true, false)
+  AC_CHECK_PROG([have_xsltproc], xsltproc, true, false)
+  # macOS with Homebrew requires the environment variable
+  # XML_CATALOG_FILES for xsltproc.
+  if $have_asciidoc && $have_xsltproc; then
+    AM_CONDITIONAL([ASCIIDOC], true)
+    XML_CATALOG_FILES=
+    if $have_brew; then
+      catalog_file=$brew_prefix/etc/xml/catalog
+      if test -f $catalog_file; then
+        AM_CONDITIONAL([HAVE_XML_CATALOG_FILES], true)
+        XML_CATALOG_FILES=file:$catalog_file
+      else
+        AC_MSG_WARN([Missing file $catalog_file.])
+      fi
+    fi
+    AC_SUBST([XML_CATALOG_FILES])
+  else
+    AS_IF([test "x$enable_doc" != xcheck], [
+      AC_MSG_FAILURE(
+        [--enable-doc was given, but test for asciidoc and xsltproc failed])
+    ])
+  fi
+])
+
+# ----------------------------------------
+# Checks for typedefs, structures, and compiler characteristics.
+# ----------------------------------------
+
+AC_CHECK_TYPES([wchar_t],,, [#include "wchar.h"])
+AC_CHECK_TYPES([long long int])
+
+# ----------------------------------------
+# Test auxiliary packages
+# ----------------------------------------
+
+AM_CONDITIONAL([HAVE_LIBCURL], false)
+AS_IF([test "x$with_curl" != xno], [
+  PKG_CHECK_MODULES([libcurl], [libcurl], [have_libcurl=true], [have_libcurl=false])
+  AM_CONDITIONAL([HAVE_LIBCURL], $have_libcurl)
+  if $have_libcurl; then
+    AC_DEFINE([HAVE_LIBCURL], [1], [Enable libcurl])
+  else
+    AS_IF([test "x$with_curl" != xcheck], [
+      AC_MSG_FAILURE(
+        [--with-curl was given, but test for libcurl failed])
+    ])
+  fi
+])
+
+PKG_CHECK_MODULES([LEPTONICA], [lept >= 1.74], [have_lept=true], [have_lept=false])
+if $have_lept; then
+  CPPFLAGS="$CPPFLAGS $LEPTONICA_CFLAGS"
+else
+  AC_MSG_ERROR([Leptonica 1.74 or higher is required. Try to install libleptonica-dev package.])
+fi
+
+AM_CONDITIONAL([HAVE_LIBARCHIVE], false)
+AS_IF([test "x$with_archive" != xno], [
+  PKG_CHECK_MODULES([libarchive], [libarchive], [have_libarchive=true], [have_libarchive=false])
+  AM_CONDITIONAL([HAVE_LIBARCHIVE], [$have_libarchive])
+  if $have_libarchive; then
+    AC_DEFINE([HAVE_LIBARCHIVE], [1], [Enable libarchive])
+    CPPFLAGS="$CPPFLAGS $libarchive_CFLAGS"
+  else
+    AS_IF([test "x$with_archive" != xcheck], [
+      AC_MSG_FAILURE(
+        [--with-archive was given, but test for libarchive failed])
+    ])
+  fi
+])
+
+AM_CONDITIONAL([ENABLE_TRAINING], true)
+
+# Check availability of ICU packages.
+PKG_CHECK_MODULES([ICU_UC], [icu-uc >= 52.1], [have_icu_uc=true], [have_icu_uc=false])
+PKG_CHECK_MODULES([ICU_I18N], [icu-i18n >= 52.1], [have_icu_i18n=true], [have_icu_i18n=false])
+if !($have_icu_uc && $have_icu_i18n); then
+  AC_MSG_WARN([icu 52.1 or higher is required, but was not found.])
+  AC_MSG_WARN([Training tools WILL NOT be built.])
+  AC_MSG_WARN([Try to install libicu-dev package.])
+  AM_CONDITIONAL([ENABLE_TRAINING], false)
+fi
+
+# Check location of pango headers
+PKG_CHECK_MODULES([pango], [pango >= 1.38.0], [have_pango=true], [have_pango=false])
+if !($have_pango); then
+        AC_MSG_WARN([pango 1.38.0 or higher is required, but was not found.])
+        AC_MSG_WARN([Training tools WILL NOT be built.])
+        AC_MSG_WARN([Try to install libpango1.0-dev package.])
+        AM_CONDITIONAL([ENABLE_TRAINING], false)
+fi
+
+# Check location of cairo headers
+PKG_CHECK_MODULES([cairo], [cairo], [have_cairo=true], [have_cairo=false])
+if !($have_cairo); then
+        AC_MSG_WARN([Training tools WILL NOT be built because of missing cairo library.])
+        AC_MSG_WARN([Try to install libcairo-dev?? package.])
+        AM_CONDITIONAL([ENABLE_TRAINING], false)
+fi
+
+PKG_CHECK_MODULES([pangocairo], [pangocairo], [], [false])
+PKG_CHECK_MODULES([pangoft2], [pangoft2], [], [false])
+
+# ----------------------------------------
+# Final Tasks and Output
+# ----------------------------------------
+
+# Output files
+AC_CONFIG_FILES([include/tesseract/version.h])
+AC_CONFIG_FILES([Makefile tesseract.pc])
+AC_CONFIG_FILES([tessdata/Makefile])
+AC_CONFIG_FILES([tessdata/configs/Makefile])
+AC_CONFIG_FILES([tessdata/tessconfigs/Makefile])
+AC_CONFIG_FILES([java/Makefile])
+AC_CONFIG_FILES([java/com/Makefile])
+AC_CONFIG_FILES([java/com/google/Makefile])
+AC_CONFIG_FILES([java/com/google/scrollview/Makefile])
+AC_CONFIG_FILES([java/com/google/scrollview/events/Makefile])
+AC_CONFIG_FILES([java/com/google/scrollview/ui/Makefile])
+AC_CONFIG_FILES([nsis/Makefile])
+AC_OUTPUT
+
+# Final message
+echo ""
+echo "Configuration is done."
+echo "You can now build and install $PACKAGE_NAME by running:"
+echo ""
+echo "$ make"
+echo "$ sudo make install"
+echo "$ sudo ldconfig"
+echo ""
+
+AM_COND_IF([ASCIIDOC], [
+  echo "This will also build the documentation."
+], [
+  AS_IF([test "$enable_doc" = "no"], [
+    echo "Documentation will not be built because it was disabled."
+  ], [
+    echo "Documentation will not be built because asciidoc or xsltproc is missing."
+  ])
+])
+
+# echo "$ sudo make install LANGS=\"eng ara deu\""
+# echo "  Or:"
+# echo "$ sudo make install-langs"
+echo ""
+
+AM_COND_IF([ENABLE_TRAINING],
+  [
+   echo "Training tools can be built and installed with:"
+   echo ""
+   echo "$ make training"
+   echo "$ sudo make training-install"
+   echo ""],
+  [
+   echo "You cannot build training tools because of missing dependency."
+   echo "Check configure output for details."
+   echo ""]
+)
+
+# ----------------------------------------
+# CONFIG Template
+# ----------------------------------------
+
+# Fence added in configuration file
+AH_TOP([
+#ifndef CONFIG_AUTO_H
+#define CONFIG_AUTO_H
+/* config_auto.h: begin */
+])
+
+# Stuff added at bottom of file
+AH_BOTTOM([
+
+/* Miscellaneous defines */
+#define AUTOCONF 1
+
+/* Not used yet
+#ifndef NO_GETTEXT
+#define USING_GETTEXT
+#endif
+*/
+
+/* config_auto.h: end */
+#endif
+])