configure.ac

dnl Process this file with autoconf 2.53 to produce a configure script.
###############################################################################
# BRLTTY - A background process providing access to the console screen (when in
#          text mode) for a blind person using a refreshable braille display.
#
# Copyright (C) 1995-2018 by The BRLTTY Developers.
#
# BRLTTY comes with ABSOLUTELY NO WARRANTY.
#
# This is free software, placed under the terms of the
# GNU Lesser General Public License, as published by the Free Software
# Foundation; either version 2.1 of the License, or (at your option) any
# later version. Please see the file LICENSE-LGPL for details.
#
# Web Page: http://brltty.com/
#
# This software is maintained by Dave Mielke <dave@mielke.cc>.
###############################################################################

AC_PREREQ([2.64])
AC_INIT([BRLTTY], [5.6], [brltty@brltty.com], [brltty], [http://brltty.com/])
AC_CONFIG_SRCDIR([Programs/brltty.c])

AC_SUBST([api_major], [0])
AC_SUBST([api_minor], [6])
AC_SUBST([api_revision], [7])

AC_SUBST([api_version], [${api_major}.${api_minor}])
AC_SUBST([api_release], [${api_version}.${api_revision}])

AC_DEFINE_UNQUOTED([BRLAPI_RELEASE], ["${api_release}"],
                   [Define this to be a string containing the API library version.])
AC_DEFINE_UNQUOTED([BRLAPI_MAJOR], [${api_major}],
                   [Define this to be the API library major version number.])
AC_DEFINE_UNQUOTED([BRLAPI_MINOR], [${api_minor}],
                   [Define this to be the API library minor version number.])
AC_DEFINE_UNQUOTED([BRLAPI_REVISION], [${api_revision}],
                   [Define this to be the API library revision number.])

BRLTTY_SUMMARY_BEGIN
brltty_build_directories=". Programs Documents Messages Android/Core Android/Application"
brltty_source_directory="`dirname "${0}"`"
brltty_manual_directories=""

for brltty_autostart_directory in `(cd "${brltty_source_directory}" && echo Autostart/*)`
do
   test -f "${brltty_source_directory}/${brltty_autostart_directory}/Makefile.in" && {
      brltty_build_directories="${brltty_build_directories} ${brltty_autostart_directory}"
   }
done

for brltty_manual_directory in `(cd "${brltty_source_directory}" && echo Documents/Manual-*/*)`
do
   test -f "${brltty_source_directory}/${brltty_manual_directory}/Makefile.in" && {
      brltty_manual_directories="${brltty_manual_directories} ${brltty_manual_directory}"
   }
done

AC_SUBST([brltty_manual_directories])
brltty_build_directories="${brltty_build_directories} ${brltty_manual_directories}"

AC_CONFIG_HEADER([config.h])
AC_CONFIG_HEADER([Programs/brlapi.h])
AC_PREFIX_DEFAULT([])
AC_CONFIG_AUX_DIR([acdir])
AC_CANONICAL_SYSTEM

brltty_default_execute_root="/${PACKAGE_TARNAME}-${PACKAGE_VERSION}"
BRLTTY_ARG_WITH(
   [execute-root], [DIRECTORY],
   [where the package is to be anchored at run-time],
   [execute_root], [""]
)
if test "${execute_root}" = "no"
then
   execute_root=""
elif test "${execute_root}" = "yes"
then
   execute_root="${brltty_default_execute_root}"
fi
AC_SUBST([execute_root])
BRLTTY_SUMMARY_ITEM([execute-root], [execute_root])

brltty_default_install_root="/tmp/${PACKAGE_TARNAME}-${PACKAGE_VERSION}"
BRLTTY_ARG_WITH(
   [install-root], [DIRECTORY],
   [where to install the package],
   [install_root], ["${execute_root}"]
)
if test "${install_root}" = "no"
then
   install_root="${execute_root}"
elif test "${install_root}" = "yes"
then
   install_root="${brltty_default_install_root}"
fi
AC_SUBST([install_root])
BRLTTY_SUMMARY_ITEM([install-root], [install_root])

BRLTTY_ARG_WITH(
   [configuration-file], [FILE],
   [name of configuration file],
   [CONFIGURATION_FILE], ["${PACKAGE_TARNAME}.conf"]
)
AC_SUBST([CONFIGURATION_FILE])
BRLTTY_DEFINE_EXPANDED([CONFIGURATION_FILE], ["${CONFIGURATION_FILE}"],
                       [Define this to be a string containing the name of the default configuration file.])

AC_SUBST([PREFERENCES_FILE], ["${PACKAGE_TARNAME}.prefs"])
BRLTTY_DEFINE_EXPANDED([PREFERENCES_FILE], ["${PREFERENCES_FILE}"],
                       [Define this to be a string containing the name of the default preferences file.])

BRLTTY_PORTABLE_DIRECTORY([includedir], [/usr])
BRLTTY_PORTABLE_DIRECTORY([datarootdir], [/usr])
BRLTTY_PORTABLE_DIRECTORY([localstatedir], [])

BRLTTY_SUMMARY_ITEM([libdir], [libdir])
BRLTTY_SUMMARY_ITEM([sysconfdir], [sysconfdir])

BRLTTY_ARG_REQUIRED(
   [program-directory], [DIRECTORY],
   [path to directory containing executables],
   [program_directory], ["${bindir}"]
)

BRLTTY_ARG_REQUIRED(
   [drivers-directory], [DIRECTORY],
   [path to directory containing drivers],
   [drivers_directory], ["${libdir}/${PACKAGE_TARNAME}"]
)

BRLTTY_ARG_WITH(
   [writable-directory], [DIRECTORY],
   [path to directory which can be written to],
   [writable_directory], ["yes"]
)
if test "${writable_directory}" = "no"
then
   writable_directory=""
elif test "${writable_directory}" = "yes"
then
   writable_directory="${localstatedir}/run/${PACKAGE_TARNAME}"
fi
AC_SUBST([writable_directory])
BRLTTY_SUMMARY_ITEM([writable-directory], [writable_directory])

BRLTTY_ARG_REQUIRED(
   [tables-directory], [DIRECTORY],
   [path to directory containing data files],
   [tables_directory], ["${sysconfdir}/${PACKAGE_TARNAME}"]
)

BRLTTY_DEFINE_STRING([TEXT_TABLES_SUBDIRECTORY], [Text], [the subdirectory for text tables])
BRLTTY_DEFINE_STRING([ATTRIBUTES_TABLES_SUBDIRECTORY], [Attributes], [the subdirectory for attributes tables])
BRLTTY_DEFINE_STRING([CONTRACTION_TABLES_SUBDIRECTORY], [Contraction], [the subdirectory for contraction tables])
BRLTTY_DEFINE_STRING([KEYBOARD_TABLES_SUBDIRECTORY], [Keyboard], [the subdirectory for keyboard key tables])
BRLTTY_DEFINE_STRING([INPUT_TABLES_SUBDIRECTORY], [Input], [the subdirectory for braille device key tables])

BRLTTY_DEFINE_STRING([TEXT_TABLE_EXTENSION], [.ttb], [the extension for text tables])
BRLTTY_DEFINE_STRING([TEXT_SUBTABLE_EXTENSION], [.tti], [the extension for text subtables])

BRLTTY_DEFINE_STRING([ATTRIBUTES_TABLE_EXTENSION], [.atb], [the extension for attributes tables])
BRLTTY_DEFINE_STRING([ATTRIBUTES_SUBTABLE_EXTENSION], [.ati], [the extension for attributes subtables])

BRLTTY_DEFINE_STRING([CONTRACTION_TABLE_EXTENSION], [.ctb], [the extension for contraction tables])
BRLTTY_DEFINE_STRING([CONTRACTION_SUBTABLE_EXTENSION], [.cti], [the extension for contraction subtables])

BRLTTY_DEFINE_STRING([KEY_TABLE_EXTENSION], [.ktb], [the extension for key tables])
BRLTTY_DEFINE_STRING([KEY_SUBTABLE_EXTENSION], [.kti], [the extension for key subtables])
BRLTTY_DEFINE_STRING([KEY_HELP_EXTENSION], [.txt], [the extension for key help files])

BRLTTY_DEFINE_STRING([PROFILES_SUBDIRECTORY], [Profiles], [the subdirectory for profiles])
BRLTTY_DEFINE_STRING([LANGUAGE_PROFILE_EXTENSION], [.lpf], [the extension for language profiles])

BRLTTY_ARG_REQUIRED(
   [manpage-directory], [DIRECTORY],
   [path to directory containing manual pages],
   [manpage_directory], ["${mandir}"]
)

BRLTTY_ARG_REQUIRED(
   [include-directory], [DIRECTORY],
   [path to directory containing header files],
   [include_directory], ["${includedir}/${PACKAGE_TARNAME}"]
)

brltty_default_init_path=/sbin/init_real
BRLTTY_ARG_WITH(
   [init-path], [FILE],
   [path to real init program],
   [init_path], [""]
)
if test "${init_path}" = "no"
then
   init_path=""
elif test "${init_path}" = "yes"
then
   init_path="${brltty_default_init_path}"
fi
if test -n "${init_path}"
then
   AC_DEFINE_UNQUOTED([INIT_PATH], ["${init_path}"],
                      [Define this if BRLTTY is to be run as init.])
fi
BRLTTY_SUMMARY_ITEM([init-path], [init_path])

brltty_default_stderr_path=/tmp/brltty.log
BRLTTY_ARG_WITH(
   [stderr-path], [FILE],
   [path to standard error log file],
   [stderr_path], [""]
)
if test "${stderr_path}" = "no"
then
   stderr_path=""
elif test "${stderr_path}" = "yes"
then
   stderr_path="${brltty_default_stderr_path}"
fi
if test -n "${stderr_path}"
then
   AC_DEFINE_UNQUOTED([STDERR_PATH], ["${stderr_path}"],
                      [Define this if standard error is to be redirected to a file.])
fi
BRLTTY_SUMMARY_ITEM([stderr-path], [stderr_path])

AC_PROG_MAKE_SET

AC_PROG_CC
if test -z "${CXX}"
then
   if test "${GCC}" = "yes"
   then
      AC_SEARCH_LIBS([__cxa_pure_virtual], [supc++])
      AC_CACHE_CHECK([if the C compiler can compile C++], [brltty_cv_prog_cc_cxx], [dnl
      brltty_save_ac_ext="${ac_ext}"
      ac_ext="cc"
      AC_TRY_LINK([], [class c {};],
                  [brltty_cv_prog_cc_cxx="yes"],
                  [brltty_cv_prog_cc_cxx="no"])
      ac_ext="${brltty_save_ac_ext}"])
      test "${brltty_cv_prog_cc_cxx}" = "yes" && CXX="${CC}"
   fi
fi
AC_PROG_CXX

brltty_gcc_cflags="-std=gnu99 -Wall -Werror=format-security"
brltty_gcc_cppflags=""

case "${host_os}"
in
   darwin*)
      brltty_gcc_cflags="${brltty_gcc_cflags} -Wno-initializer-overrides -Wno-unused-const-variable -Wno-pointer-bool-conversion"
      ;;
   elf*)
      brltty_gcc_cppflags="${brltty_gcc_cppflags} -ffreestanding -nostdinc -nostdlib"
      CPPFLAGS="${CPPFLAGS} -DGRUB_RUNTIME -DGRUB_FILE=__FILE__ -DNESTED_FUNC_ATTR="

      brltty_include_directory=`$CC -print-file-name=include`
      CPPFLAGS="${CPPFLAGS} -isystem $brltty_include_directory"

      brltty_grub_root="`pwd`/grub-root"
      test -d $brltty_grub_root || {
         AC_MSG_ERROR([symbolic link not found: $brltty_grub_root])
      }
      CPPFLAGS="${CPPFLAGS} -I$brltty_grub_root -I$brltty_grub_root/grub-core/lib/posix_wrap/include -I$brltty_grub_root/include"
      ;;
esac

test "${GCC}" = "yes" && {
   CFLAGS="${CFLAGS} ${brltty_gcc_cflags}"
   CPPFLAGS="${CPPFLAGS} ${brltty_gcc_cppflags}"
}

test "${GXX}" = "yes" && {
   CXXFLAGS="${CXXFLAGS} ${brltty_gcc_cflags}"
}

case "${host_os}"
in
   linux*|gnu*|kfreebsd*)
      brltty_prog_cc_sysflags="-D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=2 -D_BSD_SOURCE -D_XOPEN_SOURCE=500 -D_XOPEN_SOURCE_EXTENDED -D_GNU_SOURCE"
      ;;
   solaris2.1?*) # Solaris 10 & 11 require _XOPEN_SOURCE=600 if using C99
      brltty_prog_cc_sysflags="-D_XOPEN_SOURCE=600 -D__EXTENSIONS__"
      ;;
   solaris*)
      brltty_prog_cc_sysflags="-D_XOPEN_SOURCE=500 -D__EXTENSIONS__"
      ;;
   hpux*)
      brltty_prog_cc_sysflags="-D_XOPEN_SOURCE_EXTENDED -D_HPUX_SOURCE"
      ;;
   osf*)
      brltty_prog_cc_sysflags="-D_XOPEN_SOURCE=500 -D_POSIX_C_SOURCE -D_OSF_SOURCE"
      ;;
   cygwin*)
      brltty_prog_cc_sysflags="-D_XOPEN_SOURCE_EXTENDED"
      ;;
   *)
      brltty_prog_cc_sysflags=""
      ;;
esac
CPPFLAGS="${CPPFLAGS} ${brltty_prog_cc_sysflags}"

if test "${GCC}" = "yes"
then
   case "${host_os}"
   in
      cygwin*|mingw*)
         LIBCFLAGS=""
         ;;
      msdos*)
         LIBCFLAGS=""
         ;;
      darwin*)
         LIBCFLAGS=""
         ;;
      *)
         LIBCFLAGS="-fPIC"
         ;;
   esac
else
   case "${host_os}"
   in
      *)
         LIBCFLAGS=""
         AC_MSG_WARN([library flags not configured for ${host_os}])
         ;;
   esac
fi
AC_SUBST([LIBCFLAGS])

if test "$GXX" = "yes"
then
   LIBCXXFLAGS="-fPIC"
else
   case "${host_os}"
   in
      *)
         LIBCXXFLAGS=""
         ;;
   esac
fi
AC_SUBST([LIBCXXFLAGS])

AC_PATH_TOOL([LD], [ld])
AC_PATH_TOOL([STRIP], [strip])
AC_PATH_TOOL([RANLIB], [ranlib])

AC_PROG_AWK
AC_PROG_LN_S

AC_PATH_PROG([PKG_CONFIG], [pkg-config], [false])

AC_PATH_PROG([MSGMERGE], [msgmerge], [false])
AC_PATH_PROG([MSGFMT], [msgfmt], [false])

AC_PATH_PROG([LINUXDOC], [linuxdoc], [false])
AC_PATH_PROG([DOXYGEN], [doxygen], [false])

case "${host_os}"
in
   cygwin*  ) LDFLAGS_DYNAMIC="--export-all-symbols --enable-auto-import";;
   darwin*  ) LDFLAGS_DYNAMIC="";;
   elf*     ) LDFLAGS_DYNAMIC="";;
   freebsd* ) LDFLAGS_DYNAMIC="-export-dynamic";;
   gnu*     ) LDFLAGS_DYNAMIC="-export-dynamic";;
   hpux*    ) LDFLAGS_DYNAMIC="-E +s";;
   kfreebsd*) LDFLAGS_DYNAMIC="-export-dynamic";;
   linux*   ) LDFLAGS_DYNAMIC="-export-dynamic";;
   mingw*   ) LDFLAGS_DYNAMIC="--export-all-symbols --enable-auto-import";;
   msdos*   ) LDFLAGS_DYNAMIC="";;
   netbsd*  ) LDFLAGS_DYNAMIC="-export-dynamic";;
   openbsd* ) LDFLAGS_DYNAMIC="-export-dynamic";;
   osf*     ) LDFLAGS_DYNAMIC="";;
   *qnx*    ) LDFLAGS_DYNAMIC="-export-dynamic";;
   solaris* ) LDFLAGS_DYNAMIC="";;
   *) AC_MSG_ERROR([dynamic linkage not supported for ${host_os}]);;
esac
LDFLAGS_DYNAMIC="${LDFLAGS} BRLTTY_OPTIONS_LD2CC([${LDFLAGS_DYNAMIC}])"

if test "${GCC}" = "yes"
then
   LDFLAGS_STATIC="-static"
else
   case "${host_os}"
   in
      cygwin*  ) LDFLAGS_STATIC="-static";;
      elf*     ) LDFLAGS_STATIC="-static";;
      freebsd* ) LDFLAGS_STATIC="-static";;
      gnu*     ) LDFLAGS_STATIC="-static";;
      hpux*    ) LDFLAGS_STATIC="-Bstatic";;
      kfreebsd*) LDFLAGS_STATIC="-static";;
      linux*   ) LDFLAGS_STATIC="-static";;
      mingw*   ) LDFLAGS_STATIC="-static";;
      netbsd*  ) LDFLAGS_STATIC="-Bstatic";;
      openbsd* ) LDFLAGS_STATIC="-static";;
      osf*     ) LDFLAGS_STATIC="-non_shared";;
      *qnx*    ) LDFLAGS_STATIC="-static";;
      solaris* ) LDFLAGS_STATIC="-dn";;
      *) AC_MSG_ERROR([static linkage not supported for ${host_os}]);;
   esac
   LDFLAGS_STATIC="BRLTTY_OPTIONS_LD2CC([${LDFLAGS_STATIC}])"
fi

pkgconfig_flags_libs="--libs"
BRLTTY_ARG_ENABLE(
   [standalone-programs],
   [statically linked executables],
   [],
[dnl
   LDFLAGS="${LDFLAGS} ${LDFLAGS_STATIC}"
   brltty_standalone_programs="yes"
   pkgconfig_flags_libs="${pkgconfig_flags_libs} --static"
], [dnl
   LDFLAGS="${LDFLAGS} ${LDFLAGS_DYNAMIC}"

   AC_DEFINE([ENABLE_SHARED_OBJECTS], [1],
             [Define this if shared object support is to be included.])
])

AC_PROG_INSTALL
BRLTTY_EXECUTABLE_PATH([INSTALL])

test "${LINUXDOC}" = "false" && can_make_manual=no || can_make_manual=yes
AC_SUBST([can_make_manual])

test "${DOXYGEN}" = "false" && can_make_BrlAPIref=no || can_make_BrlAPIref=yes
AC_SUBST([can_make_BrlAPIref])

AC_CACHE_CHECK([for shared object creation command], [brltty_cv_prog_make_object_shared], [dnl
case "${host_os}"
in
   linux*|gnu*|openbsd*|freebsd*|kfreebsd*|netbsd*|*qnx*|cygwin*|mingw*|elf*)
      brltty_mkshr_ld_make="-shared"
      ;;
   solaris*)
      brltty_mkshr_ld_make="-G"
      ;;
   hpux*)
      brltty_mkshr_ld_make="-b"
      ;;
   osf*)
      brltty_mkshr_ld_make="-shared"
      ;;
   darwin*)
      brltty_mkshr_ld_make="-bundle"
      brltty_mkshr_ld_options="-flat_namespace -undefined suppress"
      brltty_mkshr_gcc_make="-bundle"
      ;;
   msdos*)
      brltty_mkshr_ld_make="not_supported_on_msdos"
      brltty_mkshr_ld_options="not_supported_on_msdos"
      brltty_mkshr_gcc_make="not_supported_on_msdos"
      ;;
   *)
      AC_MSG_ERROR([loadable module creation command not configured for ${host_os}])
      ;;
esac
if test "${GCC}" = "yes"
then
   brltty_cv_prog_make_object_shared="\$(CC) ${brltty_mkshr_gcc_make=-shared} BRLTTY_OPTIONS_LD2CC([${brltty_mkshr_ld_options}]) -o"
else
   brltty_cv_prog_make_object_shared="\$(LD) ${brltty_mkshr_ld_make} ${brltty_mkshr_ld_options} -o"
fi])
AC_SUBST([MKSHR], ["${brltty_cv_prog_make_object_shared}"])

AC_CACHE_CHECK([for make relocatable object command], [brltty_cv_prog_make_object_relocatable], [dnl
case "${host_os}"
in
   *)
      brltty_cv_prog_make_object_relocatable="\$(LD) -r -o"
      ;;
esac])
MKREL="${brltty_cv_prog_make_object_relocatable}"
AC_SUBST([MKREL])

AC_CACHE_CHECK([for dynamic library creation command], [brltty_cv_prog_mklib], [dnl
case "${host_os}"
in
   linux*|gnu*|openbsd*|freebsd*|kfreebsd*|netbsd*|*qnx*|elf*)
      brltty_mklib_ld_make="-shared"
      brltty_mklib_ld_options="-soname"
      ;;
   solaris*)
      brltty_mklib_ld_make="-G"
      brltty_mklib_ld_options="-h"
      ;;
   hpux*)
      brltty_mklib_ld_make="-b"
      brltty_mklib_ld_options="+h"
      ;;
   osf*)
      brltty_mklib_ld_make="-shared"
      brltty_mklib_ld_options="-expect_unresolved '*' -soname"
      ;;
   cygwin*|mingw*)
      brltty_mklib_ld_make="-shared"
      brltty_mklib_ld_options="--out-implib implib.a --output-def lib.def -soname"
      ;;
   msdos*)
      brltty_mklib_ld_make="not_supported_on_msdos"
      brltty_mklib_ld_options="not_supported_on_msdos"
      brltty_mklib_gcc_make="not_supported_on_msdos"
      ;;
   darwin*)
      dylibFound=false
      dylibPath=/usr/lib/dylib1.o
      set -- "${dylibPath}"

      sdkRootPrefix="/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX"
      sdkRootSuffix=".sdk/${dylibPath}"
      sdkVersion=`sw_vers -productVersion`

      while true
      do
         set -- "${@}" "${sdkRootPrefix}${sdkVersion}${sdkRootSuffix}"
         sdkNext="${sdkVersion%.*}"
         test "${sdkNext}" != "${sdkVersion}" || break
         sdkVersion="${sdkNext}"
      done

      set -- "${@}" "${sdkRootPrefix}"*"${sdkRootSuffix}"
      for sdkPath
      do
         test ! -f "${sdkPath}" || {
            dylibPath="${sdkPath}"
            dylibFound=true
            break
         }
      done
      "${dylibFound}" || AC_MSG_WARN([cannot find ${dylibPath}])

      brltty_mklib_ld_make="-dylib"
      brltty_mklib_ld_options="${dylibPath} -single_module -install_name"
      brltty_mklib_gcc_make="-dynamiclib"
      ;;
   *)
      AC_MSG_ERROR([dynamic library creation command not configured for ${host_os}])
      ;;
esac
if test "${GCC}" = "yes"
then
   brltty_cv_prog_mklib="\$(CC) ${brltty_mklib_gcc_make=-shared} BRLTTY_OPTIONS_LD2CC([${brltty_mklib_ld_options+${brltty_mklib_ld_options} <name>}]) -o"
else
   brltty_cv_prog_mklib="\$(LD) ${brltty_mklib_ld_make} ${brltty_mklib_ld_options+${brltty_mklib_ld_options} <name>} -o"
fi])
AC_SUBST([MKLIB], ["${brltty_cv_prog_mklib}"])

AC_CACHE_CHECK([for configure shared object directory command], [brltty_cv_prog_conflibdir], [dnl
case "${host_os}"
in
   linux*|gnu*|kfreebsd*|elf*)
      brltty_cv_prog_conflibdir="/sbin/ldconfig -n"
      ;;
   *)
      brltty_cv_prog_conflibdir=":"
      ;;
esac])
AC_SUBST([CONFLIBDIR], ["${brltty_cv_prog_conflibdir}"])

case "${host_os}"
in
   mingw*)
      BRLTTY_HAVE_WINDOWS_LIBRARY([ws2_32])
      BRLTTY_HAVE_WINDOWS_LIBRARY([gdi32])
      BRLTTY_HAVE_WINDOWS_LIBRARY([winmm])
      ;;
   cygwin*)
      BRLTTY_HAVE_WINDOWS_LIBRARY([gdi32])
      ;;
   *)
      AC_SEARCH_LIBS([socket], [socket])
      AC_SEARCH_LIBS([inet_ntoa], [nsl])
      ;;
esac

install_messages=
BRLTTY_ARG_DISABLE(
   [i18n],
   [support for internationalization],
   [],
[dnl
   test "${MSGMERGE}" = "false" || {
      install_messages=install-messages

      AC_CHECK_HEADER([libintl.h], [dnl
         AC_HAVE_LIBRARY([intl])
         AC_DEFINE([ENABLE_I18N_SUPPORT], [1],
                   [Define this if internationalization support is to be included.])
      ])
   }
])
AC_SUBST([install_messages])

AC_CHECK_FUNC([wcslen], [AC_CHECK_HEADERS([wchar.h], [dnl
   AC_CHECK_FUNCS([wcwidth])
])])

icu_includes=""
icu_libs=""
BRLTTY_ARG_DISABLE(
   [icu],
   [support for Unicode-based internationalization],
   [],
[dnl
   BRLTTY_HAVE_PACKAGE([icu], [icu-uc], [dnl
      AC_DEFINE_UNQUOTED([HAVE_ICU], [1],
                         [Define this if Unicode-based internationalization support is to be included.])

      if test "${brltty_standalone_programs}" = "yes"
      then
         icu_libs="`echo ${icu_libs} | sed -e 's/\(-l\)\(icu\)/\1s\2/g'`"
      fi
   ])
])
AC_SUBST([icu_includes])
AC_SUBST([icu_libs])

BRLTTY_ARG_DISABLE(
   [iconv],
   [support for character encoding conversion],
   [],
[dnl
   AC_CHECK_HEADERS([iconv.h], [
      AC_HAVE_LIBRARY([iconv])
   ])
])

BRLTTY_ARG_DISABLE(
   [polkit],
   [support for the Polkit authorization manager],
   [],
[dnl
   BRLTTY_HAVE_PACKAGE([polkit], [polkit-gobject-1], [dnl
      AC_DEFINE(USE_POLKIT, 1, [if the Polkit authorization manager should be used])
   ])
])

BRLTTY_ARG_DISABLE(
   [api],
   [the application programming interface],
   [],
[dnl
   BRLTTY_IF_PTHREADS([dnl
      AC_DEFINE([ENABLE_API], [1],
                [Define this if the application programming interface is to be included.])
      BRLTTY_ARG_PARAMETERS([api], [application programming interface])

      api_server_objects='brlapi_server.$O brlapi_keyranges.$O auth.$O'
      api_libraries="${LIBS}"

      all_api="all-api"
      build_api="api"
      install_api="install-api"
      api_ref='$(API_LIBS)'

      api_dynamic_library="api-dynamic-library"
      install_api_libraries="install-api-libraries"
      uninstall_api_libraries="uninstall-api-libraries"
      default_api_socket_path="${localstatedir}/lib/BrlAPI"

      case "${host_os}"
      in
         cygwin*|mingw*)
            AC_DEFINE([BRLAPI_WIN32], [1],
                      [Define this if the Win32 programming interface is available.])
	    default_api_socket_path='\\\\\\\\.\\\\pipe\\\\BrlAPI'
            api_dynamic_library="api-dynamic-library-windows"
            install_api_libraries="install-api-libraries-windows"
            uninstall_api_libraries="uninstall-api-libraries-windows"
            ;;
      esac

      BRLTTY_ARG_WITH(
          [api-socket-path], [PATH],
          [where local sockets for teh api are stored],
          [api_socket_path], [${default_api_socket_path}]
      )

      BRLTTY_BINDINGS([Java])
      BRLTTY_BINDINGS([Lisp])
      BRLTTY_BINDINGS([OCaml])
      BRLTTY_BINDINGS([Python])
      BRLTTY_BINDINGS([Tcl])

      test -n "${api_bindings}" && {
         for brltty_bindings_directory in ${api_bindings}
         do
            brltty_build_directories="${brltty_build_directories} Bindings/${brltty_bindings_directory}"
         done

         all_api_bindings="all-api-bindings"
         install_api_bindings="install-api-bindings"
      }
   ])
])
AC_SUBST([api_server_objects])
AC_SUBST([api_libraries])
AC_SUBST([api_bindings])
AC_SUBST([all_api_bindings])
AC_SUBST([install_api_bindings])
AC_SUBST([all_api])
AC_SUBST([build_api])
AC_SUBST([install_api])
AC_SUBST([api_ref])
AC_SUBST([api_dynamic_library])
AC_SUBST([install_api_libraries])
AC_SUBST([uninstall_api_libraries])
AC_SUBST([api_authkeyfile], [brlapi.key])
AC_SUBST([api_socket_path])
BRLTTY_SUMMARY_ITEM([api-socket-path], [api_socket_path])
BRLTTY_DEFINE_EXPANDED([BRLAPI_AUTHKEYFILE], ["${api_authkeyfile}"],
                       [Define this to be a string containing the name of the file containing the authorization key.])

brltty_curses_libs_save="${LIBS}"
BRLTTY_PACKAGE_CHOOSE([curses],
   [ncursesw ncursesw/ncurses.h],
   [pdcursesw curses.h],
   [ncurses ncurses.h],
   [pdcursesu curses.h],
   [curses curses.h],
   [pdcurses curses.h])
if test -n "${curses_package}"
then
   AC_CHECK_LIB([tinfo], [intrflush])
fi
curses_libs="${LIBS%${brltty_curses_libs_save}}"
LIBS="${brltty_curses_libs_save}"
AC_SUBST([curses_libs])

xkb_libs=""
xtk_libs=""
all_xbrlapi=""
install_xbrlapi=""
BRLTTY_ARG_DISABLE(
   [x],
   [support for X11],
   [],
[dnl
   BRLTTY_HAVE_PACKAGE([x11], [x11], [dnl
      all_xbrlapi="all-xbrlapi"
      install_xbrlapi="install-xbrlapi"

      AC_CHECK_HEADERS([X11/keysym.h])

      BRLTTY_HAVE_PACKAGE([xext], [xext], [dnl
         xkb_libs="${xext_libs} ${xkb_libs}"

         BRLTTY_HAVE_PACKAGE([xtst], [xtst], [dnl
            xkb_libs="${xtst_libs} ${xkb_libs}"
             
            AC_CHECK_HEADERS([X11/extensions/XTest.h])
            AC_CHECK_HEADERS([X11/extensions/XKB.h])
         ])
      ])

      BRLTTY_HAVE_PACKAGE([xt], [xt], [dnl
         xtk_libs="${xt_libs} ${xtk_libs}"

         brltty_cppflags_save="${CPPFLAGS}"
         CPPFLAGS="${CPPFLAGS} ${x11_includes}"

         brltty_libs_save="${LIBS}"
         LIBS="${xtk_libs} ${x11_libs} ${LIBS}"

         BRLTTY_PACKAGE_CHOOSE([gui_toolkit],
            [Xaw X11/Xaw/Form.h X11/Xaw/Paned.h X11/Xaw/Label.h X11/Xaw/Command.h X11/Xaw/Repeater.h],
            [Xaw3d X11/Xaw3d/Form.h X11/Xaw3d/Paned.h X11/Xaw3d/Label.h X11/Xaw3d/Command.h X11/Xaw3d/Repeater.h],
            [neXtaw X11/neXtaw/Form.h X11/neXtaw/Paned.h X11/neXtaw/Label.h X11/neXtaw/Command.h X11/neXtaw/Repeater.h],
            [XawPlus X11/XawPlus/Form.h X11/XawPlus/Paned.h X11/XawPlus/Label.h X11/XawPlus/Command.h X11/XawPlus/Repeater.h],
            [Xm Xm/Xm.h Xm/Form.h Xm/PanedW.h Xm/Label.h Xm/PushB.h])

         xtk_libs="${LIBS%${x11_libs} ${brltty_libs_save}}"

         CPPFLAGS="${brltty_cppflags_save}"
         LIBS="${brltty_libs_save}"
      ])
   ])
])
AC_SUBST([xkb_libs])
AC_SUBST([xtk_libs])
AC_SUBST([all_xbrlapi])
AC_SUBST([install_xbrlapi])

test -z "$gui_toolkit_package" && {
   case "${host_os}"
   in
      cygwin*|mingw*)
         gui_toolkit_package="windows"
         ;;
   esac
}

AC_CHECK_FUNCS([time stime gettimeofday settimeofday nanosleep])
BRLTTY_CHECK_FUNCTION([clock_gettime], [time.h], [rt])
BRLTTY_CHECK_FUNCTION([clock_settime], [time.h], [rt])

BRLTTY_CHECK_FUNCTION([pthread_getname_np], [pthread.h], [pthread])

AC_CHECK_DECLS([localtime_r], [], [], [dnl
#include <time.h>
])

AC_CHECK_HEADERS([sys/poll.h sys/select.h sys/wait.h])
AC_CHECK_FUNCS([select])

AC_CHECK_HEADERS([signal.h sys/signalfd.h])
AC_CHECK_FUNCS([sigaction])

AC_CHECK_HEADERS([alloca.h getopt.h glob.h langinfo.h regex.h])
AC_CHECK_HEADERS([syslog.h execinfo.h])
AC_CHECK_HEADERS([sys/file.h sys/socket.h])
AC_CHECK_HEADERS([pwd.h grp.h])
AC_CHECK_HEADERS([sys/io.h sys/modem.h machine/speaker.h dev/speaker/speaker.h linux/vt.h])
AC_CHECK_HEADERS([sdkddkver.h])

AC_CHECK_HEADERS([linux/input.h], [
   AC_CHECK_HEADERS([linux/uinput.h], [], [], [
#include <linux/input.h>
])])

AC_CHECK_FUNCS([getopt_long hstrerror realpath vsyslog])
AC_CHECK_FUNCS([pause])
AC_CHECK_FUNCS([fchdir fchmod])
AC_CHECK_FUNCS([shmget shm_open])
AC_CHECK_FUNCS([getpeereid getpeerucred getzoneid])
AC_CHECK_FUNCS([mempcpy wmempcpy])

case "${host_os}"
in
   cygwin*|mingw*)
      if test "${brltty_cv_dll_ws2_32}" = "yes"
      then
         BRLTTY_HAVE_WINDOWS_FUNCTION([getaddrinfo], [ws2_32])
         BRLTTY_HAVE_WINDOWS_FUNCTION([getnameinfo], [ws2_32])
         AC_CHECK_FUNCS([gai_strerror])
      fi
      AC_CHECK_TYPES([PROCESS_INFORMATION_CLASS], [], [], [
#include <windows.h>
])
      AC_CHECK_DECLS([ProcessUserModeIOPL], [], [], [
#include <windows.h>
])
      ;;
   *)
      AC_CHECK_FUNCS([gai_strerror getaddrinfo getnameinfo])
      ;;
esac

AC_CHECK_SIZEOF([wchar_t], [], [
#include <wchar.h>
])
AC_DEFINE_UNQUOTED([SIZEOF_WCHAR_T_STR], ["${ac_cv_sizeof_wchar_t}"],
                   [Define this to be a string containing the size of the wchar_t type.])

BRLTTY_IF_PTHREADS([dnl
   AC_DEFINE([HAVE_POSIX_THREADS], [1],
             [Define this if posix threads are supported.])
])

AC_C_BIGENDIAN
AC_C_CONST
AC_C_INLINE
AC_OBJEXT
AC_EXEEXT

AC_CACHE_CHECK(
   [if the compiler understands the __alignof__ operator],
   [brltty_cv_c_operator_alignof],
   [AC_TRY_COMPILE([
int a;
int b = __alignof__(a);
],
[],
[brltty_cv_c_operator_alignof=yes],
[brltty_cv_c_operator_alignof=no])])
if test "${brltty_cv_c_operator_alignof}" = "yes"
then
   AC_DEFINE([HAVE_OPERATOR_ALIGNOF],  [1],
             [Define this if the __alignof__ operator is supported.])
fi

AC_CACHE_CHECK(
   [if the compiler understands __attribute__((format(__printf__)))],
   [brltty_cv_c_attribute_format_printf],
   [AC_TRY_COMPILE([
extern void conf_attribute_format_printf(const char *format, ...)
       __attribute__((format(__printf__, 1, 2)));
],
[],
[brltty_cv_c_attribute_format_printf=yes],
[brltty_cv_c_attribute_format_printf=no])])
if test "${brltty_cv_c_attribute_format_printf}" = "yes"
then
   AC_DEFINE([HAVE_ATTRIBUTE_FORMAT_PRINTF], [1],
             [Define this if the printf format attribute is supported.])
fi

AC_CACHE_CHECK(
   [if the compiler understands __attribute__((noreturn))],
   [brltty_cv_c_attribute_noreturn],
   [AC_TRY_COMPILE([
extern void conf_attribute_noreturn(void)
       __attribute__((noreturn));
],
[],
[brltty_cv_c_attribute_noreturn=yes],
[brltty_cv_c_attribute_noreturn=no])])
if test "${brltty_cv_c_attribute_noreturn}" = "yes"
then
   AC_DEFINE([HAVE_ATTRIBUTE_NORETURN], [1],
             [Define this if the noreturn attribute is supported.])
fi

AC_CACHE_CHECK(
   [if the compiler understands __attribute__((packed))],
   [brltty_cv_c_attribute_packed],
   [AC_TRY_COMPILE([
typedef struct {
  char c;
  int i;
} __attribute__((packed)) conf_attribute_packed;
],
[],
[brltty_cv_c_attribute_packed=yes],
[brltty_cv_c_attribute_packed=no])])
if test "${brltty_cv_c_attribute_packed}" = "yes"
then
   AC_DEFINE([HAVE_ATTRIBUTE_PACKED], [1],
             [Define this if the packed attribute is supported.])
fi

AC_CACHE_CHECK(
   [if the compiler understands __attribute__((unused))],
   [brltty_cv_c_attribute_unused],
   [AC_TRY_COMPILE([
static void conf_attribute_unused (void)
       __attribute__((unused));
],
[],
[brltty_cv_c_attribute_unused=yes],
[brltty_cv_c_attribute_unused=no])])
if test "${brltty_cv_c_attribute_unused}" = "yes"
then
   AC_DEFINE([HAVE_ATTRIBUTE_UNUSED], [1],
             [Define this if the unused attribute is supported.])
fi

AC_CACHE_CHECK(
   [if the compiler supports thread-local variables],
   [brltty_cv_c_thread_local],
   [
      brltty_cv_c_thread_local=""
      for thread_local_qualifier in "_Thread_local" "__thread" "__declspec(thread)"
      do
         AC_TRY_COMPILE([
static ${thread_local_qualifier} int i;
],
            [],
            [brltty_cv_c_thread_local="${thread_local_qualifier}"; break])
      done
   ]
)
if test -n "${brltty_cv_c_thread_local}"
then
   AC_DEFINE_UNQUOTED([THREAD_LOCAL], [${brltty_cv_c_thread_local}],
                      [Define this if thread-local variables are supported.])
fi

AC_SUBST([archive_prefix], [lib])
AC_SUBST([archive_extension], [a])

case "${host_os}"
in
   cygwin*)
      library_prefix="cyg"
      ;;
   mingw*)
      library_prefix=""
      ;;
   *)
      library_prefix="${archive_prefix}"
      ;;
esac
AC_SUBST([library_prefix])

case "${host_os}"
in
   hpux*)
      library_extension="sl"
      ;;
   cygwin*|mingw*)
      library_extension="dll"
      ;;
   darwin*)
      library_extension="dylib"
      ;;
   *)
      library_extension="so"