mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2025-12-16 03:03:09 +00:00
Code Issues Packages Projects Releases Wiki Activity

improved logic on whether to include start files

Browse Source
This commit is contained in:
Andrew Kelley 2019-07-02 14:26:54 -04:00
parent 7d4a0cfed0
commit 704444a6e3
No known key found for this signature in database
GPG Key ID: 7C5F548F728501A9
1 changed files with 33 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
src/codegen.cpp
View File

@ -8606,6 +8606,38 @@ static Buf *get_resolved_root_src_path(CodeGen *g) {
return resolved_path;
}
static bool want_startup_code(CodeGen *g) {
// Test builds get handled separately.
if (g->is_test_build)
return false;
// start code does not handle UEFI target
if (g->zig_target->os == OsUefi)
return false;
// WASM freestanding can still have an entry point but other freestanding targets do not.
if (g->zig_target->os == OsFreestanding && !target_is_wasm(g->zig_target))
return false;
// Declaring certain export functions means skipping the start code
if (g->have_c_main || g->have_winmain || g->have_winmain_crt_startup)
return false;
// If there is a pub main in the root source file, that means we need start code.
if (g->have_pub_main)
return true;
if (g->out_type == OutTypeExe) {
// For build-exe, we might add start code even though there is no pub main, so that the
// programmer gets the "no pub main" compile error. However if linking libc and there is
// a C source file, that might have main().
return g->c_source_files.length == 0 || g->libc_link_lib == nullptr;
}
// For objects and libraries, and we don't have pub main, no start code.
return false;
}
static void gen_root_source(CodeGen *g) {
Buf *resolved_path = get_resolved_root_src_path(g);
if (resolved_path == nullptr)
@ -8646,11 +8678,7 @@ static void gen_root_source(CodeGen *g) {
}
report_errors_and_maybe_exit(g);
if (!g->is_test_build && (g->zig_target->os != OsFreestanding || target_is_wasm(g->zig_target)) &&
g->zig_target->os != OsUefi &&
!g->have_c_main && !g->have_winmain && !g->have_winmain_crt_startup &&
((g->have_pub_main && g->out_type == OutTypeObj) || g->out_type == OutTypeExe))
{
if (want_startup_code(g)) {
g->start_import = add_special_code(g, create_start_pkg(g, g->root_package), "start.zig");
}
if (g->zig_target->os == OsWindows && !g->have_dllmain_crt_startup &&