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openbsd: defaults to PIE executable

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OpenBSD uses PIE code by default to allow the system to load the binary at a random location.

don't pass -no-pie to preserve this behaviour, and build objects with -fPIC (LLVMRelocPIC).
This commit is contained in:
Sébastien Marie
2022-02-28 15:24:22 +00:00
parent dd9843aa21
commit f76f70c7cf
2 changed files with 7 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/llvm_backend.cpp
+5
View File
@@ -1295,6 +1295,11 @@ void lb_generate_code(lbGenerator *gen) {
reloc_mode = LLVMRelocPIC; reloc_mode = LLVMRelocPIC;
} }
if (build_context.metrics.os == TargetOs_openbsd) {
// Always use PIC for OpenBSD: it defaults to PIE
reloc_mode = LLVMRelocPIC;
}
for_array(i, gen->modules.entries) { for_array(i, gen->modules.entries) {
target_machines[i] = LLVMCreateTargetMachine( target_machines[i] = LLVMCreateTargetMachine(
target, target_triple, llvm_cpu, target, target_triple, llvm_cpu,
src/main.cpp
+2 -1
View File
@@ -463,7 +463,8 @@ i32 linker_stage(lbGenerator *gen) {
#endif #endif
link_settings = gb_string_appendc(link_settings, "-Wl,-init,'_odin_entry_point' "); link_settings = gb_string_appendc(link_settings, "-Wl,-init,'_odin_entry_point' ");
link_settings = gb_string_appendc(link_settings, "-Wl,-fini,'_odin_exit_point' "); link_settings = gb_string_appendc(link_settings, "-Wl,-fini,'_odin_exit_point' ");
} else { } else if (build_context.metrics.os != TargetOs_openbsd) {
// OpenBSD defaults to PIE executable. do not pass -no-pie for it.
link_settings = gb_string_appendc(link_settings, "-no-pie "); link_settings = gb_string_appendc(link_settings, "-no-pie ");
} }
if (build_context.out_filepath.len > 0) { if (build_context.out_filepath.len > 0) {