aboutsummaryrefslogtreecommitdiff
path: root/src/secp256k1/build-aux/m4
diff options
context:
space:
mode:
Diffstat (limited to 'src/secp256k1/build-aux/m4')
-rw-r--r--src/secp256k1/build-aux/m4/bitcoin_secp.m490
1 files changed, 90 insertions, 0 deletions
diff --git a/src/secp256k1/build-aux/m4/bitcoin_secp.m4 b/src/secp256k1/build-aux/m4/bitcoin_secp.m4
new file mode 100644
index 0000000000..e6f3470ed7
--- /dev/null
+++ b/src/secp256k1/build-aux/m4/bitcoin_secp.m4
@@ -0,0 +1,90 @@
+dnl libsecp25k1 helper checks
+AC_DEFUN([SECP_INT128_CHECK],[
+has_int128=$ac_cv_type___int128
+if test x"$has_int128" != x"yes" && test x"$set_field" = x"64bit"; then
+ AC_MSG_ERROR([$set_field field support explicitly requested but is not compatible with this host])
+fi
+if test x"$has_int128" != x"yes" && test x"$set_scalar" = x"64bit"; then
+ AC_MSG_ERROR([$set_scalar scalar support explicitly requested but is not compatible with this host])
+fi
+])
+
+dnl
+AC_DEFUN([SECP_64BIT_ASM_CHECK],[
+if test x"$host_cpu" == x"x86_64"; then
+ AC_CHECK_PROG(YASM, yasm, yasm)
+else
+ if test x"$set_field" = x"64bit_asm"; then
+ AC_MSG_ERROR([$set_field field support explicitly requested but is not compatible with this host])
+ fi
+fi
+if test x$YASM = x; then
+ if test x"$set_field" = x"64bit_asm"; then
+ AC_MSG_ERROR([$set_field field support explicitly requested but yasm was not found])
+ fi
+ has_64bit_asm=no
+else
+ case x"$host_os" in
+ xdarwin*)
+ YASM_BINFMT=macho64
+ ;;
+ x*-gnux32)
+ YASM_BINFMT=elfx32
+ ;;
+ *)
+ YASM_BINFMT=elf64
+ ;;
+ esac
+ if $YASM -f help | grep -q $YASM_BINFMT; then
+ has_64bit_asm=yes
+ else
+ if test x"$set_field" = x"64bit_asm"; then
+ AC_MSG_ERROR([$set_field field support explicitly requested but yasm doesn't support $YASM_BINFMT format])
+ fi
+ AC_MSG_WARN([yasm too old for $YASM_BINFMT format])
+ has_64bit_asm=no
+ fi
+fi
+])
+
+dnl
+AC_DEFUN([SECP_OPENSSL_CHECK],[
+if test x"$use_pkgconfig" = x"yes"; then
+ : #NOP
+ m4_ifdef([PKG_CHECK_MODULES],[
+ PKG_CHECK_MODULES([CRYPTO], [libcrypto], [has_libcrypto=yes; AC_DEFINE(HAVE_LIBCRYPTO,1,[Define this symbol if libcrypto is installed])],[has_libcrypto=no])
+ : #NOP
+ ])
+else
+ 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);
+ ]])],[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
+ AC_CHECK_HEADER(gmp.h,[AC_CHECK_LIB(gmp, __gmpz_init,[has_gmp=yes; GMP_LIBS=-lgmp; AC_DEFINE(HAVE_LIBGMP,1,[Define this symbol if libgmp is installed])])])
+fi
+if test x"$set_field" = x"gmp" && test x"$has_gmp" != x"yes"; then
+ AC_MSG_ERROR([$set_field field support explicitly requested but libgmp was not found])
+fi
+if test x"$set_bignum" = x"gmp" && test x"$has_gmp" != x"yes"; then
+ AC_MSG_ERROR([$set_bignum field support explicitly requested but libgmp was not found])
+fi
+])
+