This commit also tweaks the way Integer parses byte arrays. The modified routines are slightly faster. On a Core-i5 6400 the self tests are 0.1 to 0.2 seconds faster
* GNUmakefile-cross: Fix install target
The install target was not working: missing mkdir before copying files,
wrong dynamic library copied, missing ldconf.
The fix is mostly taken from the install target from GNUmakefile.
* Makefile: call 'ln -sf' instead of 'ln -sf -sf'
AES does not have a NEON implementation. However, because it includes "adv-simd.h", it needs the compiler options so NEON types are available. Otherwise the compile fails.
We can't guard "adv-simd.h" and NEON on just AES because Simon and Speck use the templates in their NEON implementations.
ARM64 is kind of useless. We need A-32 (old ARM), Aarch32 (new 32-bit ARM) and Aarch64 (new 64-bit ARM). Aarch32 and Aarch64 is captured by IS_ARMV8, and A-32 is captured by IS_ARM
Performance increased by about 100% on a 3.1 GHz Core i5 Skylake. Throughput went from about 7.3 cpb to about 3.5 cpb. Not bad for a software-based implementation of a block cipher
We need to ensure SSE2 does not cross pollinate into other CPU functions since SSE2 is greater than the minimum arch. The minimum arch is i586/i686, and both lack SSE2 instructions
* Set default target Windows version for MinGW to XP
The original MinGW from mingw.org targets Windows 2000 by default, but lacks
the <wspiapi.h> include needed for Windows 2000 support.
* Disable CRYPTOPP_CXX11_SYNCHRONIZATION for original MinGW
std::mutex is only available in libstdc++ if _GLIBCXX_HAS_GTHREADS is defined,
which is not the case for original MinGW. Make the existing fix for AIX more
general to fix this. Unfortunately, any C++ header has to be included to
detect the standard library and the otherwise empty <ciso646> is going to be
removed from C++20, so use <cstddef> instead.
This cleans up the compile on old PwerMac G5's. Our Altivec and Crypto code relies on Power7 and Power8 extensions. There's no need to shoehorn Altivec and Power4 into old platforms, so we disable Altivec and Crypto unless Power7 is available. The GNUmakefile sets CRYPTOPP_DISABLE_ALTIVEC if Power7 is not available.
Jeffrey Walton
zorun
Marcel Raad