mirror of
https://github.com/ckolivas/lrzip.git
synced 2025-12-06 07:12:00 +01:00
45 lines
1 KiB
Plaintext
45 lines
1 KiB
Plaintext
README.Assembler
|
|
|
|
Notes about CRC Assembly Language Coding.
|
|
|
|
lrzip-0.21 makes use of an x86 assembly language file
|
|
that optimizes CRC computation used in lrzip. It includes
|
|
a wrapper C file, 7zCrcT8.c and the assembler code,
|
|
7zCrcT8U.s.
|
|
|
|
configure should detect your host system properly
|
|
and adjust the Makefile accordingly. If you don't
|
|
have the nasm assembler or have a ppc or other non-
|
|
x86 system, the standard C CRC routines will be
|
|
compiled and linked in.
|
|
|
|
If for any reason configure does not properly
|
|
detect your system type, or you do not want assembler
|
|
modules to be compiled, you can run
|
|
|
|
ASM=no ./configure
|
|
|
|
which will automatically not include the asm module or
|
|
change the line
|
|
|
|
ASM_OBJ=7zCrcT8.o 7zCrcT8U.o
|
|
to
|
|
ASM_OBJ=7zCrc.o
|
|
|
|
in Makefile. This will change the dependency tree.
|
|
|
|
To force assembly module compilation and linking (if
|
|
configure does not detect your system type properly),
|
|
type
|
|
|
|
ASM=yes ./configure
|
|
|
|
or change the Makefile to include the ASM_OBJ files
|
|
as described above.
|
|
|
|
|
|
Type `make clean' and then re-run make.
|
|
|
|
Peter Hyman
|
|
pete@peterhyman.com
|