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# SPDX-License-Identifier: BSD-3-Clause
AC_INIT(random-seed, 0.1)
AC_CONFIG_MACRO_DIRS([m4])
AC_LANG(C)
AC_CONFIG_HEADERS(config.h)
AC_PROG_CC
AC_PROG_CC_C99
AS_IF([test "$ac_cv_prog_cc_c99" = no],
[AC_MSG_ERROR([a C99 compatible compiler is required])])
CPPFLAGS="${CPPFLAGS+$CPPFLAGS }-D_GNU_SOURCE -D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=200809L"
AC_ARG_ENABLE(debug,
AC_HELP_STRING(--enable-debug, [enable debug output [no]]),
[enable_debug=$enableval],
[enable_debug=no]
)
AS_CASE([$enable_debug],
[yes], [AC_DEFINE(DEBUG, [], [enable debug output])],
[no], [],
[AC_MSG_ERROR([invalid argument to --enable-debug])]
)
AC_ARG_WITH(udev,
AC_HELP_STRING(--with-udev, [enable libudev support [auto]]),
[with_udev=$withval],
[with_udev=auto]
)
AS_CASE([$with_udev],
[no], [],
[yes], [ PKG_CHECK_MODULES(LIBUDEV, libudev, [WITH_UDEV=1]) ],
[auto], [ PKG_CHECK_MODULES(LIBUDEV, libudev, [WITH_UDEV=1], []) ],
[AC_MSG_ERROR([invalid argument to --with-udev])]
)
AS_IF([test "$WITH_UDEV" = 1], [
AC_DEFINE(HAVE_LIBUDEV, [], [enable libudev support])
CFLAGS="${CFLAGS:+$CFLAGS }$LIBUDEV_CFLAGS"
LIBS="${LIBS:+$LIBS }$LIBUDEV_LIBS"
])
AC_ARG_WITH(util-linux,
AC_HELP_STRING(--with-util-linux, [enable util-linux support (libmount, libblkid) [auto]]),
[with_util_linux=$withval],
[with_util_linux=auto]
)
AS_CASE([$with_util_linux],
[no], [],
[yes], [
PKG_CHECK_MODULES(LIBBLKID, blkid)
PKG_CHECK_MODULES(LIBMOUNT, mount)
WITH_UTIL_LINUX=1
],
[auto], [
WITH_UTIL_LINUX=1
PKG_CHECK_MODULES(LIBBLKID, blkid, [], [WITH_UTIL_LINUX=0])
PKG_CHECK_MODULES(LIBMOUNT, mount, [], [WITH_UTIL_LINUX=0])
],
[AC_MSG_ERROR([invalid argument to --with-udev])]
)
AS_IF([test "$WITH_UTIL_LINUX" = 1], [
AC_DEFINE(HAVE_UTIL_LINUX, [], [enable util-linux support])
CFLAGS="${CFLAGS:+$CFLAGS }$LIBBLKID_CFLAGS $LIBMOUNT_CFLAGS"
LIBS="${LIBS:+$LIBS }$LIBBLKID_LIBS $LIBMOUNT_LIBS"
])
AC_ARG_WITH([machine-id-path],
AC_HELP_STRING(--with-machine-id-path, [manually specify machine-id location [/etc/machine-id, /var/lib/dbus/machine-id]]),
[machine_id_path=$withval]
)
AS_IF([test -n "$machine_id_path"],
[
AS_CASE($machine_id_path,
[/*], [],
[AC_MSG_ERROR([relative machine id path is invalid])]
)
AC_DEFINE_UNQUOTED(MACHINE_ID_PATH, "$machine_id_path", [machine id location])
]
)
AC_ARG_WITH([default-seed-path],
AC_HELP_STRING(--with-default-seed-path, [default seed path if no command line argument [/var/lib/random-seed]]),
[default_seed_path=$withval],
[default_seed_path=/var/lib/random-seed]
)
AC_DEFINE_UNQUOTED(DEFAULT_SEED_PATH, "$default_seed_path", [default seed path])
default_seed_path_dir=${default_seed_path%/*}
AC_SUBST(default_seed_path_dir)
EXTRA_CFLAGS=
AX_CHECK_COMPILE_FLAG(-Wall, [EXTRA_CFLAGS="-Wall${EXTRA_CFLAGS+ $EXTRA_CFLAGS}"])
AX_CHECK_COMPILE_FLAG(-Wextra, [EXTRA_CFLAGS="-Wextra${EXTRA_CFLAGS+ $EXTRA_CFLAGS}"])
AX_CHECK_COMPILE_FLAG(-pedantic, [EXTRA_CFLAGS="-pedantic${EXTRA_CFLAGS+ $EXTRA_CFLAGS}"])
AC_SUBST(EXTRA_CFLAGS)
AC_OUTPUT(Makefile)
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