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Diffstat (limited to 'INSTALL')
| -rw-r--r-- | INSTALL | 12 |
1 files changed, 12 insertions, 0 deletions
@@ -370,6 +370,18 @@ XZ Utils Installation pre-i686 systems, you may want to disable the assembler code. + --disable-clmul-crc + Disable the use carryless multiplication for CRC + calculation even if compiler support for it is detected. + The code uses runtime detection of SSSE3, SSE4.1, and + CLMUL instructions on x86. On 32-bit x86 this currently + is used only if --disable-assembler is used (this might + be fixed in the future). The code works on E2K too. + + If using compiler options that unconditionally allow the + required extensions (-msse4.1 -mpclmul) then runtime + detection isn't used and the generic code is omitted. + --enable-unaligned-access Allow liblzma to use unaligned memory access for 16-bit, 32-bit, and 64-bit loads and stores. This should be |