2  * "Optimize" a list of dependencies as spit out by gcc -MD
15  * gcc produces a very nice and correct list of dependencies which
18  * To use this list as-is however has the drawback that virtually
21  * If the user re-runs make *config, autoconf.h will be
38  * so most likely only his driver ;-)
47  * The former is handled by using the -MD output, the later by saving
52  * kbuild-devel a long time ago. I don't have a sensibly working
65  *   fixdep <depfile> <target> <cmdline>
73  *   savedcmd_<target> = <cmdline>
75  * and then basically copies the .<target>.d file to stdout, in the
106 	fprintf(stderr, "Usage: fixdep <depfile> <target> <cmdline>\n");  in usage()
139 	memcpy(aux->name, name, len);  in add_to_hashtable()
140 	aux->len = len;  in add_to_hashtable()
141 	aux->hash = hash;  in add_to_hashtable()
142 	aux->next = hashtab[hash % HASHSZ];  in add_to_hashtable()
155 	for (aux = hashtab[hash % HASHSZ]; aux; aux = aux->next) {  in in_hashtable()
156 		if (aux->hash == hash && aux->len == len &&  in in_hashtable()
157 		    memcmp(aux->name, name, len) == 0)  in in_hashtable()
186 	return !memcmp(s + slen - sublen, sub, sublen);  in str_ends_with()
195 		if (p > start && (isalnum(p[-1]) || p[-1] == '_')) {  in parse_config_file()
203 		if (str_ends_with(p, q - p, "_MODULE"))  in parse_config_file()
204 			r = q - 7;  in parse_config_file()
208 			use_config(p, r - p);  in parse_config_file()
250 	/* rustc may list binary files in dep-info */  in is_no_parse_file()
261 static void parse_dep_file(char *p, const char *target)  in parse_dep_file()  argument
275 			 * rustc may emit comments to dep-info.  in parse_dep_file()
305 			 * Makefiles use a line-based syntax, where the newline  in parse_dep_file()
307 			 * we expect the next token is a target.  in parse_dep_file()
336 					memmove(p + 1, p, q - p);  in parse_dep_file()
348 		/* Just discard the target */  in parse_dep_file()
359 		 * Do not list the source file as dependency, so that kbuild is  in parse_dep_file()
372 			 * rustc emits the same dependency list for each  in parse_dep_file()
373 			 * emission type. It is enough to list the source name  in parse_dep_file()
378 				printf("source_%s := %s\n\n", target, p);  in parse_dep_file()
379 				printf("deps_%s := \\\n", target);  in parse_dep_file()
382 		} else if (!is_ignored_file(p, q - p) &&  in parse_dep_file()
383 			   !in_hashtable(p, q - p, file_hashtab)) {  in parse_dep_file()
388 		if (need_parse && !is_no_parse_file(p, q - p)) {  in parse_dep_file()
406 	printf("\n%s: $(deps_%s)\n\n", target, target);  in parse_dep_file()
407 	printf("$(deps_%s):\n", target);  in parse_dep_file()
412 	const char *depfile, *target, *cmdline;  in main()  local
419 	target = argv[2];  in main()
422 	printf("savedcmd_%s := %s\n\n", target, cmdline);  in main()
425 	parse_dep_file(buf, target);  in main()