# -*- Autoconf -*-
# 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])
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($CFLAGS,
[""],[CFLAGS="-g -Wall -fPIC"],
[])
AS_CASE($LDFLAGS,
[""],[LDFLAGS="-g"],
[])
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_CONFIG_FILES([Makefile])
AC_OUTPUT
