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Add -MMD option

This commit is contained in:
Rui Ueyama 2020-09-19 21:03:19 +09:00
parent 7aa72e41e6
commit c3edffbbb0
1 changed files with 32 additions and 3 deletions
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35
main.c
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@ -12,6 +12,7 @@ static StringArray opt_include;
static bool opt_E;
static bool opt_M;
static bool opt_MD;
static bool opt_MMD;
static bool opt_MP;
static bool opt_S;
static bool opt_c;
@ -22,6 +23,7 @@ static char *opt_MT;
static char *opt_o;
static StringArray ld_extra_args;
static StringArray std_include_paths;
char *base_file;
static char *output_file;
@ -52,6 +54,10 @@ static void add_default_include_paths(char *argv0) {
strarray_push(&include_paths, "/usr/local/include");
strarray_push(&include_paths, "/usr/include/x86_64-linux-gnu");
strarray_push(&include_paths, "/usr/include");
// Keep a copy of the standard include paths for -MMD option.
for (int i = 0; i < include_paths.len; i++)
strarray_push(&std_include_paths, include_paths.data[i]);
}
static void define(char *str) {
@ -245,6 +251,11 @@ static void parse_args(int argc, char **argv) {
continue;
}
if (!strcmp(argv[i], "-MMD")) {
opt_MD = opt_MMD = true;
continue;
}
if (!strcmp(argv[i], "-cc1-input")) {
base_file = argv[++i];
continue;
@ -395,6 +406,16 @@ static void print_tokens(Token *tok) {
fprintf(out, "\n");
}
static bool in_std_include_path(char *path) {
for (int i = 0; i < std_include_paths.len; i++) {
char *dir = std_include_paths.data[i];
int len = strlen(dir);
if (strncmp(dir, path, len) == 0 && path[len] == '/')
return true;
}
return false;
}
// If -M options is given, the compiler write a list of input files to
// stdout in a format that "make" command can read. This feature is
// used to automate file dependency management.
@ -417,13 +438,21 @@ static void print_dependencies(void) {
File **files = get_input_files();
for (int i = 0; files[i]; i++)
for (int i = 0; files[i]; i++) {
if (opt_MMD && in_std_include_path(files[i]->name))
continue;
fprintf(out, " \\\n %s", files[i]->name);
}
fprintf(out, "\n\n");
if (opt_MP)
for (int i = 1; files[i]; i++)
if (opt_MP) {
for (int i = 1; files[i]; i++) {
if (opt_MMD && in_std_include_path(files[i]->name))
continue;
fprintf(out, "%s:\n\n", quote_makefile(files[i]->name));
}
}
}
static Token *must_tokenize_file(char *path) {