- Make the SIMD ASM code off by default. Use configure --enable-simd-asm
to enable.
- Allow MD5 ASM code to be requested even when OpenSSL is handling MD4
checksums. Use configure --enable-md5-asm to enable.
* x86-64 SIMD build fixes
configure.ac was modified to detect g++ >=5 and clang++ >=7. Additionally
some script malfunctions on FreeBSD were corrected.
The get_checksum1() code has been modified to fix clang and g++ 10
compilation.
This version of the code and configure.ac has been tested on:
Ubuntu 16 - gcc 7.3.0, clang 6.0.0
Debian 10 - gcc 5.4.0, 6.4.0, 7.2.0, 8.4.0, 9.2.1, 10.0.1, clang 5.0.2,
6.0.1, 7.0.1, 8.0.0, 9.0.0, 10.0.0
ArchLinux 20200605 - gcc 10.1.0, clang 10.0.0
FreeBSD 12.1 - gcc 9.3.0, clang 8.0.1
It is unknown if it will work on gcc 5.0-5.3, but the script currently
allows it.
Additionally restructures build switches and defines from SSE2 to SIMD,
to allow potential reuse should patches become available with SIMD
instructions for other processor architectures.
(Some minor tweaks of Jorrit's patch to avoid requiring GNU make and to
avoid C++ comments in .c files.)
