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Merge pull request #4976 from voutilad/openbsd-linker

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Fix linking of programs on OpenBSD
This commit is contained in:
gingerBill
2025-03-27 15:05:34 +00:00
committed by GitHub
parent 8b30adf60b 5274aa53b3
commit 71db9ac1ba
3 changed files with 9 additions and 2 deletions
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2
base/runtime/os_specific_bsd.odin
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@@ -9,7 +9,7 @@ foreign libc {
@(link_name="write")
_unix_write :: proc(fd: i32, buf: rawptr, size: int) -> int ---
when ODIN_OS == .NetBSD {
when ODIN_OS == .NetBSD || ODIN_OS == .OpenBSD {
@(link_name="__errno") __error :: proc() -> ^i32 ---
} else {
__error :: proc() -> ^i32 ---

2
core/os/os_openbsd.odin
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@@ -343,7 +343,7 @@ AT_REMOVEDIR :: 0x08
@(default_calling_convention="c")
foreign libc {
@(link_name="__error") __error :: proc() -> ^c.int ---
@(link_name="__errno") __error :: proc() -> ^c.int ---
@(link_name="fork") _unix_fork :: proc() -> pid_t ---
@(link_name="getthrid") _unix_getthrid :: proc() -> int ---

7
src/linker.cpp
View File

@@ -701,6 +701,13 @@ gb_internal i32 linker_stage(LinkerData *gen) {
// This points the linker to where the entry point is
link_settings = gb_string_appendc(link_settings, "-e _main ");
}
} else if (build_context.metrics.os == TargetOs_openbsd) {
// OpenBSD ports install shared libraries in /usr/local/lib. Also, we must explicitly link libpthread.
platform_lib_str = gb_string_appendc(platform_lib_str, "-lpthread -Wl,-L/usr/local/lib ");
// Until the LLVM back-end can be adapted to emit endbr64 instructions on amd64, we
// need to pass -z nobtcfi in order to allow the resulting program to run under
// OpenBSD 7.4 and newer. Once support is added at compile time, this can be dropped.
platform_lib_str = gb_string_appendc(platform_lib_str, "-Wl,-z,nobtcfi ");
}
if (!build_context.no_rpath) {