3. % cd Downloads/reveng-3.0.3
4. % make
gcc -O3 -Wall -ansi -fomit-frame-pointer -DPRESETS -DBMPTST -o bmptst bmpbit.c
( ./bmptst && touch bmptst ) || ( rm bmptst bmptst.exe && false )
reveng: configuration fault. Update config.h with these definitions and recompile:
#define BMP_BIT 64
#define BMP_SUB 32
rm: bmptst.exe: No such file or directory
make: *** [bmptst] Error 1
5. % gcc -O3 -Wall -ansi -c bmpbit.c cli.c model.c poly.c preset.c reveng.c
poly.c:150:19: warning: shifting a negative signed value is undefined [-Wshift-negative-value]
int cmask = ~(~0 << CHAR_BIT), c;
~~ ^
poly.c:215:19: warning: shifting a negative signed value is undefined [-Wshift-negative-value]
int cmask = ~(~0 << CHAR_BIT), c;
~~ ^
2 warnings generated.
6. % cd contrib
7. % gcc -O3 -Wall -ansi -c getopt.c
8. % cd ..
9. % gcc -o reveng bmpbit.o cli.o model.o poly.o preset.o reveng.o contrib/getopt.o
10. % ./reveng -h
CRC RevEng: arbitrary-precision CRC calculator and algorithm finder
Usage: ./reveng -cdDesvhu? [-1bBfFGlLMrStVXyz]
[-a BITS] [-A OBITS] [-i INIT] [-k KPOLY] [-m MODEL] [-p POLY]
[-p POLY] [-P RPOLY] [-q QPOLY] [-w WIDTH] [-x XOROUT] [STRING...]
Options:
-a BITS bits per character (1 to 64)
-A OBITS bits per output character (1 to 64)
-i INIT initial register value
-k KPOLY generator in Koopman notation (implies WIDTH)
-m MODEL preset CRC algorithm
-p POLY generator or search range start polynomial
-P RPOLY reversed generator polynomial (implies WIDTH)
-q QPOLY search range end polynomial
-w WIDTH register size, in bits
-x XOROUT final register XOR value
Modifier switches:
-1 skip equivalent forms -b big-endian CRC
-B big-endian CRC output -f read files named in STRINGs
-F skip preset model check pass -G skip brute force search pass
-l little-endian CRC -L little-endian CRC output
-M non-augmenting algorithm -r right-justified output
-S print spaces between chars -t left-justified output
-V reverse algorithm only -X print uppercase hexadecimal
-y low bytes first in files -z raw binary STRINGs
Mode switches:
-c calculate CRCs -d dump algorithm parameters
-D list preset algorithms -e echo (and reformat) input
-s search for algorithm -v calculate reversed CRCs
-h | -u | -? show this help
Copyright (C) 2010, 2011, 2012, 2013, 2014,
2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 Gregory Cook
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Version 3.0.3 <https://reveng.sourceforge.io/>
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