fix thread local variables for non- position independent code

This fixes comes thanks to Rich Felker from the musl libc project,
who gave me this crucial information:

"to satisfy the abi, your init code has to write the same value
to that memory location as the value passed to the [arch_prctl]
syscall"

This commit also changes the rules for when to build statically
by default. When building objects and static libraries, position
independent code is disabled if no libraries will be dynamically
linked and the target does not require position independent code.

closes #2063

1 files changed, 0 insertions, 5 deletions

diff --git a/test/stage1/behavior/misc.zig b/test/stage1/behavior/misc.zig
index fd407821e6..4cc401a008 100644
--- a/test/stage1/behavior/misc.zig
+++ b/test/stage1/behavior/misc.zig
@@ -688,11 +688,6 @@ fn getNull() ?*i32 {
 }
 
 test "thread local variable" {
-    if (!builtin.position_independent_code and !builtin.link_libc) {
-        // TODO https://github.com/ziglang/zig/issues/2063
-        return error.SkipZigTest;
-    }
-
     const S = struct {
         threadlocal var t: i32 = 1234;
     };