diff options
Diffstat (limited to 'src/secp256k1/build-aux/m4/bitcoin_secp.m4')
| -rw-r--r-- | src/secp256k1/build-aux/m4/bitcoin_secp.m4 | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/secp256k1/build-aux/m4/bitcoin_secp.m4 b/src/secp256k1/build-aux/m4/bitcoin_secp.m4 index d41bbb6487..b25d8adb92 100644 --- a/src/secp256k1/build-aux/m4/bitcoin_secp.m4 +++ b/src/secp256k1/build-aux/m4/bitcoin_secp.m4 @@ -3,13 +3,13 @@ AC_DEFUN([SECP_INT128_CHECK],[ has_int128=$ac_cv_type___int128 ]) -dnl +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 $0x100000000,%1; mulq %%rsi" : "+a"(a) : "S"(tmp) : "cc", "%rdx"); + __asm__ __volatile__("movq \@S|@0x100000000,%1; mulq %%rsi" : "+a"(a) : "S"(tmp) : "cc", "%rdx"); ]])],[has_64bit_asm=yes],[has_64bit_asm=no]) AC_MSG_RESULT([$has_64bit_asm]) ]) |