AC_INIT(mkp224o)
# sanity check
AC_CONFIG_SRCDIR([main.c])
# C compiler
: ${CFLAGS="-O3 -march=native -fomit-frame-pointer"}
AC_PROG_CC

MYDEFS=""

ed25519impl=""
AC_ARG_ENABLE([ref10],
	[AS_HELP_STRING([--enable-ref10],
		[use SUPERCOP ref10 ed25519 implementation @<:@default=yes@:>@])],
	[
		AS_IF([test "x$ed25519impl" != "x" -a "$ed25519impl" != "ref10"],
			[AC_ERROR([only one ed25519 implementation can be defined])])
		ed25519impl="ref10"
	],
	[]
)

AC_ARG_ENABLE([amd64-51-30k],
	[AS_HELP_STRING([--enable-amd64-51-30k],
		[use SUPERCOP amd64-51-30k ed25519 implementation @<:@default=no@:>@])],
	[
		AS_IF([test "x$ed25519impl" != "x" -a "$ed25519impl" != "amd64_51_30k"],
			[AC_ERROR([only one ed25519 implementation can be defined])])
		ed25519impl="amd64_51_30k"
	],
	[]
)

AC_ARG_ENABLE([amd64-64-24k],
	[AS_HELP_STRING([--enable-amd64-64-24k],
		[use SUPERCOP amd64-64-24k ed25519 implementation @<:@default=no@:>@])],
	[
		AS_IF([test "x$ed25519impl" != "x" -a "$ed25519impl" != "amd64_64_24k"],
			[AC_ERROR([only one ed25519 implementation can be defined])])
		ed25519impl="amd64_64_24k"
	],
	[]
)

AC_ARG_ENABLE([donna],
	[AS_HELP_STRING([--enable-donna],
		[use ed25519-donna implementation @<:@default=no@:>@])],
	[
		AS_IF([test "x$ed25519impl" != "x" -a "$ed25519impl" != "donna"],
			[AC_ERROR([only one ed25519 implementation can be defined])])
		ed25519impl="donna"
	],
	[]
)

AC_ARG_ENABLE([donna-sse2],
	[AS_HELP_STRING([--enable-donna-sse2],
		[use ed25519-donna SSE2 implementation @<:@default=no@:>@])],
	[
		AS_IF([test "x$ed25519impl" != "x" -a "$ed25519impl" != "donna-sse2"],
			[AC_ERROR([only one ed25519 implementation can be defined])])
		ed25519impl="donna-sse2"
	],
	[]
)

AS_IF([test "x$ed25519impl" == "x"],[ed25519impl=ref10])

if test "$ed25519impl" = "donna-sse2"
then
	ed25519impl="donna"
	MYDEFS="$MYDEFS -DED25519_SSE2"
	CFLAGS="$CFLAGS -msse2"
fi

AC_ARG_ENABLE([intfilter],
	[AS_HELP_STRING([--enable-intfilter],
		[use 64bit integers for filtering. faster but limits filter length @<:@default=no@:>@])],
	[], [enable_intfilter=no]
)
if test "x$enable_intfilter" = "xyes"
then
	MYDEFS="$MYDEFS -DINTFILTER"
fi

AC_ARG_ENABLE([statistics],
	[AS_HELP_STRING([--enable-statistics],
		[collect statistics @<:@default=yes@:>@])],
	[], [enable_statistics=yes]
)
if test "x$enable_statistics" = "xyes"
then
	MYDEFS="$MYDEFS -DSTATISTICS"
fi

AC_SUBST(ED25519IMPL,["$ed25519impl"])
AC_SUBST(MYDEFS,["$MYDEFS"])
AC_OUTPUT(Makefile)