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zig cc: better support for the preprocessor option (-E)

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This commit is contained in:
Andrew Kelley
2020-03-21 20:32:48 -04:00
parent 28ad78cb7f
commit 4b0ddb817b
9 changed files with 115 additions and 14 deletions
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22
src/codegen.cpp
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@@ -9723,13 +9723,17 @@ static void gen_c_object(CodeGen *g, Buf *self_exe_path, CFile *c_file) {
buf_len(c_source_basename), 0);
Buf *final_o_basename = buf_alloc();
// We special case when doing build-obj for just one C file
if (main_output_dir_is_just_one_c_object_pre(g)) {
buf_init_from_buf(final_o_basename, g->root_out_name);
if (c_file->preprocessor_only_basename == nullptr) {
// We special case when doing build-obj for just one C file
if (main_output_dir_is_just_one_c_object_pre(g)) {
buf_init_from_buf(final_o_basename, g->root_out_name);
} else {
os_path_extname(c_source_basename, final_o_basename, nullptr);
}
buf_append_str(final_o_basename, target_o_file_ext(g->zig_target));
} else {
os_path_extname(c_source_basename, final_o_basename, nullptr);
buf_init_from_str(final_o_basename, c_file->preprocessor_only_basename);
}
buf_append_str(final_o_basename, target_o_file_ext(g->zig_target));
CacheHash *cache_hash;
if ((err = create_c_object_cache(g, &cache_hash, true))) {
@@ -9780,13 +9784,18 @@ static void gen_c_object(CodeGen *g, Buf *self_exe_path, CFile *c_file) {
args.append(buf_ptr(self_exe_path));
args.append("clang");
if (c_file->preprocessor_only_basename != nullptr) {
args.append("-E");
} else {
args.append("-c");
}
Buf *out_dep_path = buf_sprintf("%s.d", buf_ptr(out_obj_path));
add_cc_args(g, args, buf_ptr(out_dep_path), false);
args.append("-o");
args.append(buf_ptr(out_obj_path));
args.append("-c");
args.append(buf_ptr(c_source_file));
for (size_t arg_i = 0; arg_i < c_file->args.length; arg_i += 1) {
@@ -9841,6 +9850,7 @@ static void gen_c_object(CodeGen *g, Buf *self_exe_path, CFile *c_file) {
os_path_join(artifact_dir, final_o_basename, o_final_path);
}
g->c_artifact_dir = artifact_dir;
g->link_objects.append(o_final_path);
g->caches_to_release.append(cache_hash);