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INSTALL: Clarify that --disable-assembler affects only 32-bit x86. 

(cherry picked from commit 00440f52be)
This commit is contained in:
Lasse Collin 2024-02-21 17:41:32 +02:00
parent b4b315a206
commit a8b3fb6d2f
1 changed files with 8 additions and 8 deletions
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16
INSTALL
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@ -359,15 +359,15 @@ XZ Utils Installation
with --docdir=DIR.
--disable-assembler
liblzma includes some assembler optimizations. Currently
there is only assembler code for CRC32 and CRC64 for
32-bit x86.
This disables CRC32 and CRC64 assembly code on
32-bit x86. This option currently does nothing
on other architectures (not even on x86-64).
All the assembler code in liblzma is position-independent
code, which is suitable for use in shared libraries and
position-independent executables. So far only i386
instructions are used, but the code is optimized for i686
class CPUs. If you are compiling liblzma exclusively for
The 32-bit x86 assembly is position-independent code
which is suitable for use in shared libraries and
position-independent executables. It uses only i386
instructions but the code is optimized for i686 class
CPUs. If you are compiling liblzma exclusively for
pre-i686 systems, you may want to disable the assembler
code.