diff options
author | Amitay Isaacs <amitay@ozlabs.org> | 2021-04-06 12:52:44 +1000 |
---|---|---|
committer | Matt Caswell <matt@openssl.org> | 2021-04-08 12:18:10 +0100 |
commit | a72da9ecebcd8e9b9caf6a3d05251a7008e9c614 (patch) | |
tree | 2fe816d93b8b884c0372d31a7d87d04d3fd2426e /Configure | |
parent | f684a2d783bf2c4728e65f83e0f89ec654f40e79 (diff) |
Configure: Check if 128-bit integers are supported by compiler
Add a config variable "use_int128" to indicate if 128-bit integers are
supported or not at the configure time. This makes it easier to
automatically select 64-bit versus 32-bit implementation for curve448.
Signed-off-by: Amitay Isaacs <amitay@ozlabs.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14784)
Diffstat (limited to 'Configure')
-rwxr-xr-x | Configure | 14 |
1 files changed, 14 insertions, 0 deletions
@@ -1573,6 +1573,20 @@ if (!$disabled{asm} && !$predefined_C{__MACH__} && $^O ne 'VMS') { } } +# Check if __SIZEOF_INT128__ is defined by compiler +$config{use_int128} = 0; +{ + my $cc = $config{CROSS_COMPILE}.$config{CC}; + open(PIPE, "$cc -E -dM - </dev/null 2>&1 |"); + while(<PIPE>) { + if (m/__SIZEOF_INT128__/) { + $config{use_int128} = 1; + last; + } + } + close(PIPE); +} + # Deal with bn_ops ################################################### $config{bn_ll} =0; |