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Implement -dM preprocessor option as in gcc

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There was already support for -dD option but in contrast -dM dumps only `#define` directives w/o actual preprocessor output.

The original -dD output differs from gcc output by additional comment in front of `#define`s so this quirk is left for -dM as well.
This commit is contained in:
Vlad Vissoultchev 2016-04-06 18:57:11 +03:00
parent 0691b7630b
commit e946eb2a41
4 changed files with 14 additions and 8 deletions
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6
libtcc.c
View File

@ -1225,6 +1225,8 @@ LIBTCCAPI void tcc_delete(TCCState *s1)
/* close a preprocessor output */
if (s1->ppfp && s1->ppfp != stdout)
fclose(s1->ppfp);
if (s1->dffp && s1->dffp != s1->ppfp)
fclose(s1->dffp);
/* free all sections */
for(i = 1; i < s1->nb_sections; i++)
@ -2175,8 +2177,8 @@ PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv)
s->output_type = TCC_OUTPUT_OBJ;
break;
case TCC_OPTION_d:
if (*optarg == 'D')
s->dflag = 1;
if (*optarg == 'D' || *optarg == 'M')
s->dflag = *optarg;
else {
if (s->warn_unsupported)
goto unsupported_option;

3
tcc.c
View File

@ -301,6 +301,9 @@ int main(int argc, char **argv)
if (!s->ppfp)
tcc_error("could not write '%s'", s->outfile);
}
s->dffp = s->ppfp;
if (s->dflag == 'M')
s->ppfp = NULL;
}
tcc_set_output_type(s, s->output_type);

3
tcc.h
View File

@ -712,7 +712,8 @@ struct TCCState {
LINE_MACRO_OUTPUT_FORMAT_NONE,
LINE_MACRO_OUTPUT_FORMAT_STD
} Pflag; /* -P switch */
int dflag; /* -dX value */
char dflag; /* -dX value */
FILE *dffp;
/* for -MD/-MF: collected dependencies for this compilation */
char **target_deps;

10
tccpp.c
View File

@ -1092,7 +1092,7 @@ static void pp_line(TCCState *s1, BufferedFile *f, int level)
static void tok_print(const char *msg, const int *str)
{
FILE *pr = tcc_state->ppfp;
FILE *pr = tcc_state->dffp;
int t;
CValue cval;
@ -1108,13 +1108,13 @@ static void tok_print(const char *msg, const int *str)
static int define_print_prepared(Sym *s)
{
if (!s || !tcc_state->ppfp || tcc_state->dflag == 0)
if (!s || !tcc_state->dffp || tcc_state->dflag == 0)
return 0;
if (s->v < TOK_IDENT || s->v >= tok_ident)
return 0;
if (file) {
if (file && tcc_state->dflag == 'D') {
file->line_num--;
pp_line(tcc_state, file, 0);
file->line_ref = ++file->line_num;
@ -1124,7 +1124,7 @@ static int define_print_prepared(Sym *s)
static void define_print(int v)
{
FILE *pr = tcc_state->ppfp;
FILE *pr = tcc_state->dffp;
Sym *s, *a;
s = define_find(v);
@ -1149,7 +1149,7 @@ static void define_print(int v)
static void undef_print(int v)
{
FILE *pr = tcc_state->ppfp;
FILE *pr = tcc_state->dffp;
Sym *s;
s = define_find(v);