acinclude.m4

dnl Function to detect if libewf dependencies are available
AC_DEFUN([AX_LIBEWF_CHECK_LOCAL],
 [dnl Check for type definitions
 dnl Type used in libewf/libewf_date_time_values.h, libewf/libewf_date_time.h
 dnl and libewf/libewf_header_values.c
 AC_STRUCT_TM

 dnl Check for headers
 dnl Headers included in libewf/libewf_date_time.h
 AC_HEADER_TIME

 dnl Check for functions
 dnl Date and time functions used in libewf/libewf_date_time.h
 AC_CHECK_FUNCS([localtime localtime_r mktime])

 AS_IF(
  [test "x$ac_cv_func_localtime" != xyes && test "x$ac_cv_func_localtime_r" != xyes],
  [AC_MSG_FAILURE(
   [Missing functions: localtime and localtime_r],
   [1])
  ])
 
 AS_IF(
  [test "x$ac_cv_func_mktime" != xyes],
  [AC_MSG_FAILURE(
   [Missing function: mktime],
   [1])
  ])

 dnl Check for internationalization functions in libewf/libewf_i18n.c 
 AC_CHECK_FUNCS([bindtextdomain])
 ])

dnl Function to detect whether version 1 API support should be enabled
AC_DEFUN([AX_LIBEWF_CHECK_ENABLE_V1_API],
 [AX_COMMON_ARG_ENABLE(
  [v1-api],
  [v1_api],
  [enable version 1 API],
  [no])

 AS_IF(
  [test "x$ac_cv_enable_v1_api" != xno],
  [AC_DEFINE(
   [HAVE_V1_API],
   [1],
   [Define to 1 if the version 1 API should be available.])
  AC_SUBST(
   [HAVE_V1_API],
   [1])
  ac_cv_enable_v1_api=yes],
  [AC_SUBST(
   [HAVE_V1_API],
   [0]) ])

 AM_CONDITIONAL(
  HAVE_V1_API,
  [test "x$ac_cv_enable_v1_api" != xno])
 ])

dnl Function to determine the host operating system
AC_DEFUN([AX_LIBEWF_CHECK_HOST_OPERATING_SYSTEM],
 [ac_libewf_determine_operating_system_target_string="$target";

 AS_IF(
  [test "x$ac_libewf_determine_operating_system_target_string" = x],
  [ac_libewf_determine_operating_system_target_string="$host"])

 AS_IF(
  [test "x$ac_libewf_determine_operating_system_target_string" = x],
  [ac_libewf_determine_operating_system_target_string="$build"])

 AS_CASE(
  [$ac_libewf_determine_operating_system_target_string],
  [*cygwin*], [ac_libewf_operating_system="Cygwin";],
  [*darwin*], [ac_libewf_operating_system="Darwin";],
  [*freebsd*], [ac_libewf_operating_system="FreeBSD";],
  [*netbsd*], [ac_libewf_operating_system="NetBSD";],
  [*openbsd*], [ac_libewf_operating_system="OpenBSD";],
  [*linux*], [ac_libewf_operating_system="Linux";],
  [*mingw*], [ac_libewf_operating_system="MingW";],
  [*solaris*], [ac_libewf_operating_system="SunOS";],
  [*], [ac_libewf_operating_system="Unknown";])

 AC_DEFINE_UNQUOTED(
  LIBEWF_OPERATING_SYSTEM,
  "$ac_libewf_operating_system",
  [Defines the fallback operating system string.])
 ])

dnl Function to detect if ewftools dependencies are available
AC_DEFUN([AX_EWFTOOLS_CHECK_LOCAL],
  [dnl Headers used in ewftools
  AC_CHECK_HEADERS([signal.h sys/signal.h unistd.h])

  dnl Functions used in ewftools
  AC_CHECK_FUNCS([close getopt setvbuf])

  AS_IF(
   [test "x$ac_cv_func_close" != xyes],
   [AC_MSG_FAILURE(
     [Missing function: close],
     [1])
  ])

  dnl Check for the host operation system will be used as a fall back in the ewftools
  AX_LIBEWF_CHECK_HOST_OPERATING_SYSTEM

  dnl Headers included in ewftools/ewftools_glob.h
  AC_CHECK_HEADERS([errno.h glob.h])

  AS_IF(
    [test "x$ac_cv_header_glob_h" = xno],
    [AC_CHECK_HEADERS([io.h])
  ])

  dnl Headers included in ewftools/log_handle.c
  AC_CHECK_HEADERS([stdarg.h varargs.h])

  AS_IF(
    [test "x$ac_cv_header_stdarg_h" != xyes && test "x$ac_cv_header_varargs_h" != xyes],
    [AC_MSG_FAILURE(
      [Missing headers: stdarg.h and varargs.h],
      [1])
  ])

  dnl Check if tools should be build as static executables
  AX_COMMON_CHECK_ENABLE_STATIC_EXECUTABLES

  dnl Check if DLL support is needed
  AS_IF(
    [test "x$enable_shared" = xyes && test "x$ac_cv_enable_static_executables" = xno],
    [AS_CASE(
      [$host],
      [*cygwin* | *mingw*],
      [AC_SUBST(
        [LIBEWF_DLL_IMPORT],
        ["-DLIBEWF_DLL_IMPORT"])
    ])
  ])
])