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# -*- Autoconf -*-
# Copyright (c) 2015, NORDUnet A/S
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
# - Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# - Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# - Neither the name of the NORDUnet nor the names of its contributors may
# be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
# IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
# TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# Bare-minimum autoconf, with as little of the usual voodoo as
# possible. This probably ought to be replaced by a ten-line Python
# script, some day when we have time to shave that yak.
#
# We deliberately avoid constructs like AC_PROG_CC because they're
# almost certain to guess wrong about the settings we want.
#
# If you don't understand why there are so many square brackets, put
# the keyboard down and back away slowly before somebody gets hurt.
AC_INIT([libcryptech], [0.1])
AC_ARG_VAR([FPGA_BUS], [Bus architecture to use (currently must be "EIM" or "I2C")])
AC_ARG_VAR([CC], [C compiler command])
AC_ARG_VAR([CFLAGS], [C compiler flags])
AC_ARG_VAR([LDFLAGS], [Linker flags])
AC_ARG_VAR([TFMDIR], [Directory containing libtfm.a and tfm.h])
AS_CASE($FPGA_BUS, [""],[FPGA_BUS=EIM], [EIM|I2C],[],
[AC_MSG_ERROR([Invalid setting of FPGA_BUS, must be "EIM" or "I2C"])])
AS_CASE($CC, [""],[CC='cc'], [])
AS_CASE($CFLAGS, [""],[CFLAGS='-g3 -Wall -fPIC -std=c99 -I${TFMDIR}'], [])
AS_CASE($LDFLAGS, [""],[LDFLAGS='-g3 -L${TFMDIR} -ltfm'], [])
AS_CASE($TFMDIR, [""],[TFMDIR='${abs_top_builddir}/../libtfm'], [])
AC_MSG_NOTICE([FPGA bus: $FPGA_BUS])
AC_MSG_NOTICE([C compiler: $CC])
AC_MSG_NOTICE([C compiler flags: $CFLAGS])
AC_MSG_NOTICE([Linker flags: $LDFLAGS])
AC_MSG_NOTICE([libtfm directory: $TFMDIR])
AC_CONFIG_FILES([Makefile tests/Makefile])
AC_OUTPUT
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