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signature_parser.c: In function 'yyparse':
signature_parser.c:476: warning: implicit declaration of function 'yylex'
signature_parser.c:520: warning: label 'yyerrlab' defined but not used
 gcc -DHAVE_CONFIG_H -I. -I. -I../.. -I../../nepenthes-core/include -I../../nepenthes-core/src -pipe -D _GNU_SOURCE -D _GNU_SOURCE -I/usr/local/include -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGE_FILES -Wall -g -O2 -MT signature_parser.lo -MD -MP -MF .deps/signature_parser.Tpo -c signature_parser.c -o signature_parser.o >/dev/null 2>&1
:   signature_scanner.l
sed '/^#/ s|\.c|signature_scanner.c|' .c >signature_scanner.c
sed: can't read .c: No such file or directory
make[3]: *** [signature_scanner.c] Error 2
make[3]: Leaving directory `/root/nepenthes/modules/shellcode-signatures'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/root/nepenthes/modules'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/root/nepenthes'
make: *** [all] Error 2