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fix undefined reference to memcpy in release mode

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when not depending on libc, we generate memcpy and memset
implementations.
This commit is contained in:
Andrew Kelley
2016-01-06 06:40:25 -07:00
parent 5e64c4d92f
commit 5f0bfcac24
7 changed files with 85 additions and 46 deletions
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38
src/codegen.cpp
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@@ -2179,6 +2179,24 @@ done_looking_at_imports:
return import_entry;
}
static ImportTableEntry *add_special_code(CodeGen *g, const char *basename) {
Buf *std_dir = buf_create_from_str(ZIG_STD_DIR);
Buf *code_basename = buf_create_from_str(basename);
Buf path_to_code_src = BUF_INIT;
os_path_join(std_dir, code_basename, &path_to_code_src);
Buf *abs_full_path = buf_alloc();
int err;
if ((err = os_path_real(&path_to_code_src, abs_full_path))) {
zig_panic("unable to open '%s': %s", buf_ptr(&path_to_code_src), err_str(err));
}
Buf *import_code = buf_alloc();
if ((err = os_fetch_file_path(abs_full_path, import_code))) {
zig_panic("unable to open '%s': %s", buf_ptr(&path_to_code_src), err_str(err));
}
return codegen_add_code(g, abs_full_path, std_dir, code_basename, import_code);
}
void codegen_add_root_code(CodeGen *g, Buf *src_dir, Buf *src_basename, Buf *source_code) {
Buf source_path = BUF_INIT;
os_path_join(src_dir, src_basename, &source_path);
@@ -2192,22 +2210,12 @@ void codegen_add_root_code(CodeGen *g, Buf *src_dir, Buf *src_basename, Buf *sou
g->root_import = codegen_add_code(g, abs_full_path, src_dir, src_basename, source_code);
if (g->have_exported_main && !g->link_libc && g->out_type != OutTypeLib) {
Buf *bootstrap_dir = buf_create_from_str(ZIG_STD_DIR);
Buf *bootstrap_basename = buf_create_from_str("bootstrap.zig");
Buf path_to_bootstrap_src = BUF_INIT;
os_path_join(bootstrap_dir, bootstrap_basename, &path_to_bootstrap_src);
Buf *abs_full_path = buf_alloc();
if ((err = os_path_real(&path_to_bootstrap_src, abs_full_path))) {
zig_panic("unable to open '%s': %s", buf_ptr(&path_to_bootstrap_src), err_str(err));
}
Buf *import_code = buf_alloc();
int err;
if ((err = os_fetch_file_path(abs_full_path, import_code))) {
zig_panic("unable to open '%s': %s", buf_ptr(&path_to_bootstrap_src), err_str(err));
if (!g->link_libc) {
if (g->have_exported_main && g->out_type != OutTypeLib) {
g->bootstrap_import = add_special_code(g, "bootstrap.zig");
}
g->bootstrap_import = codegen_add_code(g, abs_full_path, bootstrap_dir, bootstrap_basename, import_code);
add_special_code(g, "builtin.zig");
}
if (g->verbose) {
@@ -2417,7 +2425,7 @@ void codegen_link(CodeGen *g, const char *out_file) {
// invoke `ar`
// example:
// # static link into libfoo.a
// ar cq libfoo.a foo1.o foo2.o
// ar rcs libfoo.a foo1.o foo2.o
zig_panic("TODO invoke ar");
return;
}