2010-03-29 01:07:08 +02:00
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README.Assembler
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2019-11-25 15:44:46 +01:00
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Update November 2019
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Assembler is enabled by
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./configure --enable-asm
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and disabled by
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./configure --disable-asm
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not
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ASM=no ./configure
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New files replace 32 and 64 bit assembler code.
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fixes to lzma/C/Makefile.am permit libtool linking.
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Original text follows.
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==========================
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2010-03-29 01:07:08 +02:00
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Notes about CRC Assembly Language Coding.
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lrzip-0.21 makes use of an x86 assembly language file
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that optimizes CRC computation used in lrzip. It includes
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a wrapper C file, 7zCrcT8.c and the assembler code,
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7zCrcT8U.s.
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configure should detect your host system properly
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and adjust the Makefile accordingly. If you don't
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have the nasm assembler or have a ppc or other non-
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x86 system, the standard C CRC routines will be
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compiled and linked in.
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If for any reason configure does not properly
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detect your system type, or you do not want assembler
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modules to be compiled, you can run
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ASM=no ./configure
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which will automatically not include the asm module or
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change the line
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ASM_OBJ=7zCrcT8.o 7zCrcT8U.o
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to
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ASM_OBJ=7zCrc.o
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in Makefile. This will change the dependency tree.
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To force assembly module compilation and linking (if
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configure does not detect your system type properly),
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type
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ASM=yes ./configure
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or change the Makefile to include the ASM_OBJ files
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as described above.
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Type `make clean' and then re-run make.
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Peter Hyman
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pete@peterhyman.com
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