dnl Process this file with autoconf to produce a configure script.
AC_INIT(include/reiserfs/libreiserfs.h)
AC_CANONICAL_HOST
AC_PREREQ(2.50)

AH_TEMPLATE([PACKAGE], [Define this to be the name of the package.])
AH_TEMPLATE([VERSION], [Define to the version of the package.])
AH_TEMPLATE([HAVE_LIBUUID], [Define for enable libuuid using.])
AH_TEMPLATE([ENABLE_DEBUG], [Define for enable debug info.])

dnl AH_TEMPLATE([LIBREISERFS_MAX_INTERFACE_VERSION], [Define to the max interface version.])
dnl AH_TEMPLATE([LIBREISERFS_MIN_INTERFACE_VERSION], [Define to the min interface version.])

LIBREISERFS_MAJOR_VERSION=3
LIBREISERFS_MINOR_VERSION=6
LIBREISERFS_MICRO_VERSION=20
LIBREISERFS_VERSION=$LIBREISERFS_MAJOR_VERSION.$LIBREISERFS_MINOR_VERSION.$LIBREISERFS_MICRO_VERSION

dnl LIBREISERFS_INTERFACE_AGE=0
dnl LIBREISERFS_BINARY_AGE=0

dnl LT_RELEASE=$LIBREISERFS_MAJOR_VERSION.$LIBREISERFS_MINOR_VERSION

dnl LT_CURRENT=`expr $LIBREISERFS_MICRO_VERSION - $LIBREISERFS_INTERFACE_AGE`
dnl LT_REVISION=$LIBREISERFS_INTERFACE_AGE
dnl LT_AGE=`expr $LIBREISERFS_BINARY_AGE - $LIBREISERFS_INTERFACE_AGE`

PACKAGE=reiserfsprogs
VERSION=$LIBREISERFS_VERSION

AM_INIT_AUTOMAKE($PACKAGE, $VERSION)
AM_CONFIG_HEADER(config.h)
AM_MAINTAINER_MODE

dnl AC_DEFINE_UNQUOTED(LIBREISERFS_MAX_INTERFACE_VERSION, $LIBREISERFS_BINARY_AGE)
dnl AC_DEFINE_UNQUOTED(LIBREISERFS_MIN_INTERFACE_VERSION, $LIBREISERFS_INTERFACE_AGE)


AC_ARG_ENABLE(debug,
	[  --enable-debug      enable extra checks], ,
	enable_debug=no
)

PROGS_LDFLAGS=""

AC_ARG_ENABLE(static,
    	[  --enable-static     build all static], ,
		enable_static=no
)

if test x$enable_static = xyes; then
	PROGS_LDFLAGS=-static
fi

dnl We install in /sbin, the utils are to be available on boot
dnl AC_PREFIX(/)

PRESET_CFLAGS=$CFLAGS

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CPP
AC_PROG_AWK 
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_PROG_RANLIB

AM_ENABLE_SHARED
dnl AM_PROG_LIBTOOL

dnl Checks for libraries.

# Check for LIBUUID
LIBS=""
AC_CHECK_LIB(uuid, uuid_generate, , AC_MSG_WARN(libuuid could not be found))
UUID_LIBS="$LIBS"

dnl Checks for header files.
AC_HEADER_STDC
AC_HEADER_DIRENT
AC_CHECK_HEADERS(print.h errno.h fcntl.h limits.h malloc.h sys/ioctl.h unistd.h uuid/uuid.h)
AC_CHECK_HEADERS([asm/unaligned.h])

AC_HEADER_MAJOR

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_TYPE_SIZE_T
AC_STRUCT_ST_RDEV
AC_C_BIGENDIAN

dnl Check for the compiler pic option.
AC_CACHE_CHECK([whether -fPIC works], [pic], [
	saved_CPPFLAGS="$CPPFLAGS"
	CPPFLAGS="-fPIC -DPIC"
	AC_TRY_COMPILE(, , [pic=yes], [pic=no])
	CPPFLAGS="$saved_CPPFLAGS"
])

# Checking for compiler warning options
AC_CACHE_CHECK([whether -Wuninitialized works], [uninitialized], [
	saved_CPPFLAGS="$CPPFLAGS"
	CPPFLAGS="-O1 -Wuninitialized"
	AC_TRY_COMPILE(, , [uninitialized=yes], [uninitialized=no])
	CPPFLAGS="$saved_CPPFLAGS"
])

AC_CACHE_CHECK([whether -Wno-unused-parameter works], [no_unused_parameter], [
	saved_CPPFLAGS="$CPPFLAGS"
	CPPFLAGS="-Wno-unused-parameter"
	AC_TRY_COMPILE(, , [no_unused_parameter=yes], [no_unused_parameter=no])
	CPPFLAGS="$saved_CPPFLAGS"
		])

AC_CACHE_CHECK([whether -Wredundant-decls works], [redundant_decls], [
	saved_CPPFLAGS="$CPPFLAGS"
	CPPFLAGS="-Wredundant-decls"
	AC_TRY_COMPILE(, , [redundant_decls=yes], [redundant_decls=no])
	CPPFLAGS="$saved_CPPFLAGS"
])

# Check for large file
AC_SYS_LARGEFILE

if test x${ac_cv_sys_file_offset_bits} = xno; then
	AC_MSG_WARN(Can't detect right _FILE_OFFSET_BITS. Will be forced to 64bit.)
	ac_cv_sys_file_offset_bits=64
fi

AC_CHECK_SIZEOF(off_t, 64, [ 
	#include <stdio.h>
	#include <sys/types.h>
	#include <unistd.h> 
])

AC_CHECK_SIZEOF(blkcnt_t, 64, [ 
	#include <stdio.h>
	#include <sys/types.h>
	#include <unistd.h> 
])

dnl Checks for library functions.
AC_PROG_GCC_TRADITIONAL
AC_FUNC_STAT
AC_FUNC_MEMCMP
AC_FUNC_STRFTIME
AC_FUNC_VPRINTF
AC_CHECK_FUNCS(strerror strstr strtol register_printf_function statfs getmntent\
	       hasmntopt memset time uname)


dnl Never enable this. It is for debugging only
AC_ARG_ENABLE(io-failure-emulation,
[  --enable-io-failure-emulation      Never use that. It is for debugging only],
[ if test "$enableval" = "yes" ; then
    echo -e "\nCarefull! IO failure emulation is ON\n"
    AC_DEFINE(IO_FAILURE_EMULATION, 1, [gets set when configure --enable-io-failure-emulation])
  fi
])

credits="$srcdir/CREDITS"
AC_MSG_CHECKING(for $credits)
if test -r $credits ; then
    AC_MSG_RESULT(yes)
else
    AC_MSG_ERROR(Missing file $credits)
fi

$AWK ['
BEGIN  {in_header = 1; start = 2; count = 0}

{
    if (in_header) {
	print $0
	if ($0 == "") {
	    in_header = 0;
	    printf "char *credits[] = {\n"
	}
    } else {
	if (($0 == "") || (length($0) < 1)) {
	    start = 1;
	    count++;
	} else {
	    if (!start)
		printf "\t\\\n"
	    else if (start == 1)
		printf ",\n\n"
	    printf "\t\"" $0 "\\n\""
	    start = 0;
	}
    }
}
END    { print "\n};\n#define CREDITS_COUNT "  count }
']  $credits > "$srcdir/include/util/credits.h"

if test x$enable_debug = xyes; then
	if test "x" = "x$PRESET_CFLAGS"; then
		CFLAGS="-g -Wall"
	fi
	
	if test x$no_unused_parameter = xyes; then
		CFLAGS="$CFLAGS -Wno-unused-parameter"
	else
		CFLAGS="$CFLAGS -Wno-unused"
	fi
	
	if test x$redundant_decls = xyes; then
		CFLAGS="$CFLAGS -Wredundant-decls"
	fi
	
	if test x$uninitialized = xyes; then
		CFLAGS="$CFLAGS -Wuninitialized -O1"
	else
		CFLAGS="$CFLAGS -O0"
	fi
else
	if test "x" = "x$PRESET_CFLAGS"; then
		CFLAGS="-Wall -O2"
	fi
fi

if test x$pic = xyes; then
	CFLAGS="$CFLAGS -fPIC -DPIC"
fi

dnl AC_SUBST(LT_RELEASE)
dnl AC_SUBST(LT_CURRENT)
dnl AC_SUBST(LT_REVISION)
dnl AC_SUBST(LT_AGE)

AC_SUBST(UUID_LIBS)
AC_SUBST(PROGS_LDFLAGS)

AC_OUTPUT(
    Makefile 
    include/Makefile 
    include/misc/Makefile
    include/reiserfs/Makefile 
    include/util/Makefile
    libmisc/Makefile
    libreiserfs/Makefile 
    libutil/Makefile
    utils/Makefile
    utils/mkfs/Makefile 
    utils/resizer/Makefile 
    utils/fsck/Makefile
    utils/debugfs/Makefile
    utils/tune/Makefile
    reiserfsprogs.spec)

echo
echo Type \'make\' to compile reiserfsprogs and \'make install\' to install it.