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#!/bin/sh
if test -f config.mk; then
exit 0
fi
if test -z "$CC"; then
CC=cc
fi
if test -z "$YASM"; then
YASM=yasm
fi
# test yasm
$YASM -f elf64 -o /tmp/secp256k1-$$.o - <<EOF
BITS 64
GLOBAL testyasm
ALIGN 32
testyasm:
xor r9,r9
EOF
if [ "$?" = 0 ]; then
$CC $CFLAGS -std=c99 -x c -c - -o /tmp/secp256k1-$$-2.o 2>/dev/null <<EOF
void __attribute__ ((sysv_abi)) testyasm(void);
int main() {
testyasm();
return 0;
}
EOF
$CC $CFLAGS -std=c99 /tmp/secp256k1-$$-2.o /tmp/secp256k1-$$.o -o /dev/null 2>/dev/null
if [ "$?" = 0 ]; then
HAVE_YASM=1
fi
rm -rf /tmp/secp256k1-$$-2.o /tmp/secp256k1-$$.o
fi
# test openssl
HAVE_OPENSSL=0
$CC $CFLAGS -std=c99 -x c - -o /dev/null -lcrypto 2>/dev/null <<EOF
#include <openssl/bn.h>
int main() {
BN_CTX *ctx = BN_CTX_new();
BN_CTX_free(ctx);
return 0;
}
EOF
if [ "$?" = 0 ]; then
HAVE_OPENSSL=1
fi
# test openssl/EC
HAVE_OPENSSL_EC=0
if [ "$HAVE_OPENSSL" = "1" ]; then
$CC $CFLAGS -std=c99 -x c - -o /dev/null -lcrypto 2>/dev/null <<EOF
#include <openssl/ec.h>
#include <openssl/ecdsa.h>
#include <openssl/obj_mac.h>
int main() {
EC_KEY *eckey = EC_KEY_new_by_curve_name(NID_secp256k1);
ECDSA_sign(0, NULL, 0, NULL, NULL, eckey);
ECDSA_verify(0, NULL, 0, NULL, 0, eckey);
EC_KEY_free(eckey);
return 0;
}
EOF
if [ "$?" = 0 ]; then
HAVE_OPENSSL_EC=1
fi
fi
# test gmp
HAVE_GMP=0
$CC $CFLAGS -std=c99 -x c - -o /dev/null -lgmp 2>/dev/null <<EOF
#include <gmp.h>
int main() {
mpz_t n;
mpz_init(n);
mpz_clear(n);
return 0;
}
EOF
if [ "$?" = 0 ]; then
HAVE_GMP=1
fi
# test __int128
HAVE_INT128=0
$CC $CFLAGS -std=c99 -x c - -o /dev/null 2>/dev/null <<EOF
#include <stdint.h>
int main() {
__int128 x = 0;
return 0;
}
EOF
if [ "$?" = 0 ]; then
HAVE_INT128=1
fi
for arg in "$@"; do
case "$arg" in
--no-yasm)
HAVE_YASM=0
;;
--no-gmp)
HAVE_GMP=0
;;
--no-openssl)
HAVE_OPENSSL=0
;;
--use-endomorphism)
USE_ENDOMORPHISM=1
;;
esac
done
LINK_OPENSSL=0
LINK_GMP=0
USE_ASM=0
# select field implementation
if [ "$HAVE_YASM" = "1" ]; then
CFLAGS_FIELD="-DUSE_FIELD_5X52 -DUSE_FIELD_5X52_ASM"
USE_ASM=1
elif [ "$HAVE_INT128" = "1" ]; then
CFLAGS_FIELD="-DUSE_FIELD_5X52 -DUSE_FIELD_5X52_INT128"
elif [ "$HAVE_GMP" = "1" ]; then
CFLAGS_FIELD="-DUSE_FIELD_GMP"
LINK_GMP=1
else
CFLAGS_FIELD="-DUSE_FIELD_10X26"
fi
# select num implementation
if [ "$HAVE_GMP" = "1" ]; then
CFLAGS_NUM="-DUSE_NUM_GMP -DUSE_FIELD_INV_NUM"
LINK_GMP=1
elif [ "$HAVE_OPENSSL" = "1" ]; then
CFLAGS_NUM="-DUSE_NUM_OPENSSL -DUSE_FIELD_INV_BUILTIN"
LINK_OPENSSL=1
else
echo "No usable num implementation found" >&2
exit 1
fi
CFLAGS_EXTRA="$CFLAGS_FIELD $CFLAGS_NUM"
LDFLAGS_EXTRA=""
if [ "$LINK_GMP" = "1" ]; then
LDFLAGS_EXTRA="-lgmp"
fi
if [ "$LINK_OPENSSL" = "1" ]; then
LDFLAGS_EXTRA="-lcrypto"
else
if [ "$HAVE_OPENSSL_EC" = "1" ]; then
LDFLAGS_TEST_EXTRA="-lcrypto"
fi
fi
CFLAGS_TEST_EXTRA=""
if [ "$HAVE_OPENSSL_EC" = "1" ]; then
CFLAGS_TEST_EXTRA="-DENABLE_OPENSSL_TESTS"
fi
if [ "$USE_ENDOMORPHISM" = "1" ]; then
CFLAGS_EXTRA="$(CFLAGS_EXTRA) -DUSE_ENDOMORPHISM"
fi
echo "CC=$CC" > config.mk
echo "YASM=$YASM" >>config.mk
echo "CFLAGS_EXTRA=$CFLAGS_EXTRA" >> config.mk
echo "CFLAGS_TEST_EXTRA=$CFLAGS_TEST_EXTRA" >> config.mk
echo "LDFLAGS_EXTRA=$LDFLAGS_EXTRA" >> config.mk
echo "LDFLAGS_TEST_EXTRA=$LDFLAGS_TEST_EXTRA" >> config.mk
echo "USE_ASM=$USE_ASM" >>config.mk
echo "OPTLEVEL=O2" >>config.mk