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author | Felix Lange <fjl@users.noreply.github.com> | 2017-01-13 04:29:11 +0800 |
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committer | GitHub <noreply@github.com> | 2017-01-13 04:29:11 +0800 |
commit | e0ceeab0d111ada7d847c83992d2ff3128bfb959 (patch) | |
tree | be9fcaa85d61ba461a3ee2293206f5f73c7e5451 /crypto/secp256k1/libsecp256k1/build-aux/m4/bitcoin_secp.m4 | |
parent | 93077c98e43610122ad0933b20a44f04a8f4b6b2 (diff) | |
download | dexon-e0ceeab0d111ada7d847c83992d2ff3128bfb959.tar.gz dexon-e0ceeab0d111ada7d847c83992d2ff3128bfb959.tar.zst dexon-e0ceeab0d111ada7d847c83992d2ff3128bfb959.zip |
crypto/secp256k1: update to github.com/bitcoin-core/secp256k1 @ 9d560f9 (#3544)
- Use defined constants instead of hard-coding their integer value.
- Allocate secp256k1 structs on the C stack instead of converting []byte
- Remove dead code
Diffstat (limited to 'crypto/secp256k1/libsecp256k1/build-aux/m4/bitcoin_secp.m4')
-rw-r--r-- | crypto/secp256k1/libsecp256k1/build-aux/m4/bitcoin_secp.m4 | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/crypto/secp256k1/libsecp256k1/build-aux/m4/bitcoin_secp.m4 b/crypto/secp256k1/libsecp256k1/build-aux/m4/bitcoin_secp.m4 new file mode 100644 index 000000000..b74acb8c1 --- /dev/null +++ b/crypto/secp256k1/libsecp256k1/build-aux/m4/bitcoin_secp.m4 @@ -0,0 +1,69 @@ +dnl libsecp25k1 helper checks +AC_DEFUN([SECP_INT128_CHECK],[ +has_int128=$ac_cv_type___int128 +]) + +dnl escape "$0x" below using the m4 quadrigaph @S|@, and escape it again with a \ for the shell. +AC_DEFUN([SECP_64BIT_ASM_CHECK],[ +AC_MSG_CHECKING(for x86_64 assembly availability) +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ + #include <stdint.h>]],[[ + uint64_t a = 11, tmp; + __asm__ __volatile__("movq \@S|@0x100000000,%1; mulq %%rsi" : "+a"(a) : "S"(tmp) : "cc", "%rdx"); + ]])],[has_64bit_asm=yes],[has_64bit_asm=no]) +AC_MSG_RESULT([$has_64bit_asm]) +]) + +dnl +AC_DEFUN([SECP_OPENSSL_CHECK],[ + has_libcrypto=no + m4_ifdef([PKG_CHECK_MODULES],[ + PKG_CHECK_MODULES([CRYPTO], [libcrypto], [has_libcrypto=yes],[has_libcrypto=no]) + if test x"$has_libcrypto" = x"yes"; then + TEMP_LIBS="$LIBS" + LIBS="$LIBS $CRYPTO_LIBS" + AC_CHECK_LIB(crypto, main,[AC_DEFINE(HAVE_LIBCRYPTO,1,[Define this symbol if libcrypto is installed])],[has_libcrypto=no]) + LIBS="$TEMP_LIBS" + fi + ]) + if test x$has_libcrypto = xno; then + AC_CHECK_HEADER(openssl/crypto.h,[ + AC_CHECK_LIB(crypto, main,[ + has_libcrypto=yes + CRYPTO_LIBS=-lcrypto + AC_DEFINE(HAVE_LIBCRYPTO,1,[Define this symbol if libcrypto is installed]) + ]) + ]) + LIBS= + fi +if test x"$has_libcrypto" = x"yes" && test x"$has_openssl_ec" = x; then + AC_MSG_CHECKING(for EC functions in libcrypto) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ + #include <openssl/ec.h> + #include <openssl/ecdsa.h> + #include <openssl/obj_mac.h>]],[[ + EC_KEY *eckey = EC_KEY_new_by_curve_name(NID_secp256k1); + ECDSA_sign(0, NULL, 0, NULL, NULL, eckey); + ECDSA_verify(0, NULL, 0, NULL, 0, eckey); + EC_KEY_free(eckey); + ECDSA_SIG *sig_openssl; + sig_openssl = ECDSA_SIG_new(); + (void)sig_openssl->r; + ECDSA_SIG_free(sig_openssl); + ]])],[has_openssl_ec=yes],[has_openssl_ec=no]) + AC_MSG_RESULT([$has_openssl_ec]) +fi +]) + +dnl +AC_DEFUN([SECP_GMP_CHECK],[ +if test x"$has_gmp" != x"yes"; then + CPPFLAGS_TEMP="$CPPFLAGS" + CPPFLAGS="$GMP_CPPFLAGS $CPPFLAGS" + LIBS_TEMP="$LIBS" + LIBS="$GMP_LIBS $LIBS" + AC_CHECK_HEADER(gmp.h,[AC_CHECK_LIB(gmp, __gmpz_init,[has_gmp=yes; GMP_LIBS="$GMP_LIBS -lgmp"; AC_DEFINE(HAVE_LIBGMP,1,[Define this symbol if libgmp is installed])])]) + CPPFLAGS="$CPPFLAGS_TEMP" + LIBS="$LIBS_TEMP" +fi +]) |