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diff --git a/tcctools.c b/tcctools.c
index 4567b81..2bcc990 100644
--- a/tcctools.c
+++ b/tcctools.c
@@ -61,7 +61,7 @@ static int contains_any(const char *s, const char *list) {
}
static int ar_usage(int ret) {
- fprintf(stderr, "usage: tcc -ar [rcsv] lib file...\n");
+ fprintf(stderr, "usage: tcc -ar [rcsv] lib [file...]\n");
fprintf(stderr, "create library ([abdioptxN] not supported).\n");
return ret;
}
@@ -115,8 +115,9 @@ ST_FUNC int tcc_tool_ar(TCCState *s1, int argc, char **argv)
}
}
- if (!i_obj) // i_obj implies also i_lib. we require both.
+ if (!i_lib) // i_obj implies also i_lib.
ret = 1;
+ i_obj = i_obj ? i_obj : argc; // An empty archive will be generated if no input file is given
if (ret == 1)
return ar_usage(ret);
@@ -242,6 +243,11 @@ ST_FUNC int tcc_tool_ar(TCCState *s1, int argc, char **argv)
hofs++, fpos = 1;
// write header
fwrite("!<arch>\n", 8, 1, fh);
+ // create an empty archive
+ if (!funccnt) {
+ ret = 0;
+ goto the_end;
+ }
sprintf(stmp, "%-10d", (int)(strpos + (funccnt+1) * sizeof(int)));
memcpy(&arhdr.ar_size, stmp, 10);
fwrite(&arhdr, sizeof(arhdr), 1, fh);
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