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preprocessor oprtion -C (keep comments)

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This is done by impression of the pcc -C option.
    Usual execution path and speed are not changed.
This commit is contained in:
seyko
2016-04-15 17:15:11 +03:00
parent 16cbca281f
commit c6dc756d4e
5 changed files with 195 additions and 48 deletions
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20
libtcc.c
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@ -1604,6 +1604,21 @@ LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
{
s->output_type = output_type;
if (s->output_type == TCC_OUTPUT_PREPROCESS) {
if (!s->outfile) {
s->ppfp = stdout;
} else {
s->ppfp = fopen(s->outfile, "w");
if (!s->ppfp)
tcc_error("could not write '%s'", s->outfile);
}
s->dffp = s->ppfp;
if (s->dflag == 'M')
s->ppfp = NULL;
}
if (s->option_C && !s->ppfp)
s->option_C = 0;
if (!s->nostdinc) {
/* default include paths */
/* -isystem paths have already been handled */
@ -1946,6 +1961,7 @@ enum {
TCC_OPTION_b,
TCC_OPTION_g,
TCC_OPTION_c,
TCC_OPTION_C,
TCC_OPTION_dumpversion,
TCC_OPTION_d,
TCC_OPTION_float_abi,
@ -2003,6 +2019,7 @@ static const TCCOption tcc_options[] = {
#endif
{ "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
{ "c", TCC_OPTION_c, 0 },
{ "C", TCC_OPTION_C, 0 },
{ "dumpversion", TCC_OPTION_dumpversion, 0},
{ "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
#ifdef TCC_TARGET_ARM
@ -2191,6 +2208,9 @@ ST_FUNC int tcc_parse_args1(TCCState *s, int argc, char **argv)
tcc_warning("-c: some compiler action already specified (%d)", s->output_type);
s->output_type = TCC_OUTPUT_OBJ;
break;
case TCC_OPTION_C:
s->option_C = 1;
break;
case TCC_OPTION_d:
if (*optarg == 'D' || *optarg == 'M')
s->dflag = *optarg;