Commit 03facba496

Alex Rønne Petersen <alex@alexrp.com>
2025-07-30 18:59:08
std.Target: require libc for Android API levels prior to 29
Emulated TLS depends on libc pthread functions. Closes #24589.
master
1 parent 259b7c3
Changed files (1)
lib
std
Target.zig
lib/std/Target.zig
@@ -2023,7 +2023,12 @@ pub fn requiresLibC(target: *const Target) bool {
         .serenity,
         => true,
 
-        .linux
+        // Android API levels prior to 29 did not have native TLS support. For these API levels, TLS
+        // is implemented through calls to `__emutls_get_address`. We provide this function in
+        // compiler-rt, but it's implemented by way of `pthread_key_create` et al, so linking libc
+        // is required.
+        .linux => target.abi.isAndroid() and target.os.version_range.linux.android < 29,
+
         .windows,
         .freebsd,
         .netbsd,