AC_PREREQ(2.57)
AC_INIT(cryptsetup,1.1.0-rc4)
AC_CONFIG_SRCDIR(src/cryptsetup.c)
AC_CONFIG_MACRO_DIR([m4])

AM_CONFIG_HEADER([config.h:config.h.in])
AM_INIT_AUTOMAKE(dist-bzip2)

if test "x$prefix" = "xNONE"; then
	sysconfdir=/etc
fi
AC_PREFIX_DEFAULT(/usr)

AC_CANONICAL_HOST
AC_GNU_SOURCE
AC_PROG_CC
AM_PROG_CC_C_O
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_ENABLE_STATIC(no)
AM_PROG_LIBTOOL

AC_HEADER_DIRENT
AC_HEADER_STDC
AC_CHECK_HEADERS(fcntl.h malloc.h inttypes.h sys/ioctl.h sys/mman.h \
	ctype.h unistd.h locale.h)

AC_CHECK_HEADERS(uuid/uuid.h,,[AC_MSG_ERROR('You need the uuid library')])
AC_CHECK_HEADER(libdevmapper.h,,[AC_MSG_ERROR('You need the device-mapper library')])

saved_LIBS=$LIBS
AC_CHECK_LIB(uuid, uuid_clear, ,[AC_MSG_ERROR('You need the uuid library')])
AC_SUBST(UUID_LIBS, $LIBS)
LIBS=$saved_LIBS


AM_PATH_LIBGCRYPT(1.1.42,,[AC_MSG_ERROR('You need the gcrypt library')])

AC_CHECK_FUNCS([setlocale, posix_memalign])

AC_C_CONST
AC_C_BIGENDIAN
AC_TYPE_OFF_T
AC_STRUCT_ST_RDEV
AC_SYS_LARGEFILE

AC_PROG_GCC_TRADITIONAL

dnl ==========================================================================

AM_GNU_GETTEXT([external],[need-ngettext])
AM_GNU_GETTEXT_VERSION([0.15])

dnl ==========================================================================

saved_LIBS=$LIBS
AC_CHECK_LIB(popt, poptConfigFileToString,,
	[AC_MSG_ERROR([You need popt 1.7 or newer to compile.])])
AC_SUBST(POPT_LIBS, $LIBS)
LIBS=$saved_LIBS

dnl ==========================================================================

AC_ARG_ENABLE(shared-library,
[  --disable-shared-library
                          disable building of shared cryptsetup library],,
enable_shared_library=yes)
AM_CONDITIONAL(STATIC_LIBRARY, test x$enable_shared_library = xno)

AC_ARG_ENABLE(selinux,
[  --disable-selinux       disable selinux support [[default=auto]]],[], [])

saved_LIBS=$LIBS
AC_CHECK_LIB(devmapper, dm_task_set_name,,[AC_MSG_ERROR('You need the device-mapper library')])
AC_CHECK_LIB(devmapper, dm_task_set_message,,
	[AC_MSG_ERROR([The device-mapper library on your system is too old.])])
DEVMAPPER_LIBS=$LIBS
LIBS=$saved_LIBS
if test "x$enable_selinux" != xno; then
	AC_CHECK_LIB(sepol, sepol_bool_set)
	AC_CHECK_LIB(selinux, is_selinux_enabled)
	if test x$enable_static = xyes; then
		SELINUX_STATIC_LIBS=$LIBS
		# Check if we need -pthread with --enable-static and selinux
		saved_LIBS2=$LIBS
		LIBS="$LIBS -static"
		AC_SEARCH_LIBS([pthread_mutex_lock], [pthread],
			[test "$ac_cv_search_pthread_mutex_lock" = "none required" || LIB_PTHREAD=-lpthread])
		LIBS=$saved_LIBS2
	fi
fi

if test x$enable_static = xyes; then
	saved_LIBS2=$LIBS
	LIBS="$LIBS -static"
	# Check if it there is still not some missing dependency like static selinux libs
	AC_SEARCH_LIBS([dm_set_selinux_context], [devmapper],,
		[AC_MSG_ERROR([Your system requires SElinux libraries for static compilation.])])
	LIBS=$saved_LIBS2
fi

LIBS=$saved_LIBS

DEVMAPPER_LIBS="$DEVMAPPER_LIBS $LIB_PTHREAD"
AC_SUBST(DEVMAPPER_LIBS)
AC_SUBST(SELINUX_STATIC_LIBS)

dnl ==========================================================================
AC_DEFUN([CS_DEFINE],
	[AC_DEFINE_UNQUOTED(DEFAULT_[]m4_translit([$1], [-a-z], [_A-Z]), [$2], [$3])
])

AC_DEFUN([CS_STR_WITH], [AC_ARG_WITH([$1],
	[AS_HELP_STRING(--with-[$1], [default $2 [$3]])],
	[CS_DEFINE([$1], ["$withval"], [$2])],
	[CS_DEFINE([$1], ["$3"], [$2])]
)])

AC_DEFUN([CS_NUM_WITH], [AC_ARG_WITH([$1],
	[AS_HELP_STRING(--with-[$1], [default $2 [$3]])],
	[CS_DEFINE([$1], [$withval], [$2])],
	[CS_DEFINE([$1], [$3], [$2])]
)])

CS_STR_WITH([plain-hash],   [password hashing function for plain mode], [ripemd160])
CS_STR_WITH([plain-cipher], [cipher for plain mode], [aes])
CS_STR_WITH([plain-mode],   [cipher mode for plain mode], [cbc-essiv:sha256])
CS_NUM_WITH([plain-keybits],[key length in bits for plain mode], [256])

CS_STR_WITH([luks1-hash],   [hash function for LUKS1 header], [sha1])
CS_STR_WITH([luks1-cipher], [cipher for LUKS1], [aes])
CS_STR_WITH([luks1-mode],   [cipher mode for LUKS1], [cbc-essiv:sha256])
CS_NUM_WITH([luks1-keybits],[key length in bits for LUKS1], [256])

dnl ==========================================================================

AM_CONDITIONAL(STATIC_CRYPTSETUP, test x$enable_static = xyes)
AM_CONDITIONAL(DYNAMIC_CRYPTSETUP, test x$enable_static = xno)

dnl ==========================================================================

AC_OUTPUT([ Makefile
lib/Makefile
lib/libcryptsetup.pc
src/Makefile
po/Makefile.in
luks/Makefile
man/Makefile
tests/Makefile
])