70 lines
2.3 KiB
Plaintext
70 lines
2.3 KiB
Plaintext
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dnl libsecp25k1 helper checks
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AC_DEFUN([SECP_INT128_CHECK],[
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has_int128=$ac_cv_type___int128
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])
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dnl escape "$0x" below using the m4 quadrigaph @S|@, and escape it again with a \ for the shell.
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AC_DEFUN([SECP_64BIT_ASM_CHECK],[
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AC_MSG_CHECKING(for x86_64 assembly availability)
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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#include <stdint.h>]],[[
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uint64_t a = 11, tmp;
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__asm__ __volatile__("movq \@S|@0x100000000,%1; mulq %%rsi" : "+a"(a) : "S"(tmp) : "cc", "%rdx");
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]])],[has_64bit_asm=yes],[has_64bit_asm=no])
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AC_MSG_RESULT([$has_64bit_asm])
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])
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dnl
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AC_DEFUN([SECP_OPENSSL_CHECK],[
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has_libcrypto=no
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m4_ifdef([PKG_CHECK_MODULES],[
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PKG_CHECK_MODULES([CRYPTO], [libcrypto], [has_libcrypto=yes],[has_libcrypto=no])
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if test x"$has_libcrypto" = x"yes"; then
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TEMP_LIBS="$LIBS"
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LIBS="$LIBS $CRYPTO_LIBS"
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AC_CHECK_LIB(crypto, main,[AC_DEFINE(HAVE_LIBCRYPTO,1,[Define this symbol if libcrypto is installed])],[has_libcrypto=no])
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LIBS="$TEMP_LIBS"
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fi
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])
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if test x$has_libcrypto = xno; then
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AC_CHECK_HEADER(openssl/crypto.h,[
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AC_CHECK_LIB(crypto, main,[
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has_libcrypto=yes
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CRYPTO_LIBS=-lcrypto
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AC_DEFINE(HAVE_LIBCRYPTO,1,[Define this symbol if libcrypto is installed])
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])
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])
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LIBS=
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fi
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if test x"$has_libcrypto" = x"yes" && test x"$has_openssl_ec" = x; then
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AC_MSG_CHECKING(for EC functions in libcrypto)
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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#include <openssl/ec.h>
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#include <openssl/ecdsa.h>
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#include <openssl/obj_mac.h>]],[[
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EC_KEY *eckey = EC_KEY_new_by_curve_name(NID_secp256k1);
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ECDSA_sign(0, NULL, 0, NULL, NULL, eckey);
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ECDSA_verify(0, NULL, 0, NULL, 0, eckey);
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EC_KEY_free(eckey);
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ECDSA_SIG *sig_openssl;
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sig_openssl = ECDSA_SIG_new();
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(void)sig_openssl->r;
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ECDSA_SIG_free(sig_openssl);
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]])],[has_openssl_ec=yes],[has_openssl_ec=no])
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AC_MSG_RESULT([$has_openssl_ec])
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fi
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])
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dnl
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AC_DEFUN([SECP_GMP_CHECK],[
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if test x"$has_gmp" != x"yes"; then
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CPPFLAGS_TEMP="$CPPFLAGS"
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CPPFLAGS="$GMP_CPPFLAGS $CPPFLAGS"
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LIBS_TEMP="$LIBS"
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LIBS="$GMP_LIBS $LIBS"
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AC_CHECK_HEADER(gmp.h,[AC_CHECK_LIB(gmp, __gmpz_init,[has_gmp=yes; GMP_LIBS="$GMP_LIBS -lgmp"; AC_DEFINE(HAVE_LIBGMP,1,[Define this symbol if libgmp is installed])])])
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CPPFLAGS="$CPPFLAGS_TEMP"
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LIBS="$LIBS_TEMP"
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fi
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])
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