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strerror: strerror.c strerror.h
$(CC) $(CFLAGS) -o $@ strerror.c
strerror.h: errlist Makefile
printf '#ifndef STRERROR_H\n#define STRERROR_H 1\n\n' > $@
printf '#include <errno.h>\n\n' >> $@
printf 'const char *errlist[] = {\n' >> $@
awk '{printf("#ifdef %s\n\t[%s] = \"%s\",\n#endif\n", $$0, $$0, $$0);}' errlist >> $@
printf '};\n\n#endif\n' >> $@
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