diff --git a/README.md b/README.md
index 9868fa2b22..8d495f3e8b 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ to find and inspect the patch diffs.
  * LLVM, LLD, Clang 19.1.0
  * zlib 1.3.1
  * zstd 1.5.2
- * zig 0.14.0-dev.2246+bfcf18c5a
+ * zig 0.14.0-dev.2253+3a6a8b8aa
 
 For other versions, check the git tags of this repository.
 
diff --git a/build b/build
index 4923b5c740..3dd468cad0 100755
--- a/build
+++ b/build
@@ -7,7 +7,7 @@ TARGET="$1" # Example: riscv64-linux-gnu
 MCPU="$2" # Examples: `baseline`, `native`, `generic+v7a`, or `arm1176jzf_s`
 
 ROOTDIR="$(pwd)"
-ZIG_VERSION="0.14.0-dev.2246+bfcf18c5a"
+ZIG_VERSION="0.14.0-dev.2253+3a6a8b8aa"
 
 TARGET_OS_AND_ABI=${TARGET#*-} # Example: linux-gnu
 
diff --git a/build.bat b/build.bat
index 28daafd711..df6895df69 100644
--- a/build.bat
+++ b/build.bat
@@ -35,7 +35,7 @@ if "%VSCMD_ARG_HOST_ARCH%"=="x86" set OUTDIR=out-win-x86
 
 set ROOTDIR=%~dp0
 set "ROOTDIR_CMAKE=%ROOTDIR:\=/%"
-set ZIG_VERSION="0.14.0-dev.2246+bfcf18c5a"
+set ZIG_VERSION="0.14.0-dev.2253+3a6a8b8aa"
 set JOBS_ARG=
 
 pushd %ROOTDIR%
diff --git a/zig/bootstrap.c b/zig/bootstrap.c
index cbbc65cf9b..37e4837672 100644
--- a/zig/bootstrap.c
+++ b/zig/bootstrap.c
@@ -123,7 +123,7 @@ int main(int argc, char **argv) {
         if (f == NULL)
             panic("unable to open config.zig for writing");
 
-        const char *zig_version = "0.14.0-dev.2246+bfcf18c5a";
+        const char *zig_version = "0.14.0-dev.2253+3a6a8b8aa";
 
         int written = fprintf(f,
             "pub const have_llvm = false;\n"
diff --git a/zig/lib/std/c.zig b/zig/lib/std/c.zig
index 94d2a3405a..e9961556fb 100644
--- a/zig/lib/std/c.zig
+++ b/zig/lib/std/c.zig
@@ -7028,6 +7028,7 @@ pub const pthread_attr_t = switch (native_os) {
 
 pub const pthread_key_t = switch (native_os) {
     .linux, .emscripten => c_uint,
+    .macos, .ios, .tvos, .watchos, .visionos => c_ulong,
     .openbsd, .solaris, .illumos => c_int,
     else => void,
 };
diff --git a/zig/lib/std/os/linux.zig b/zig/lib/std/os/linux.zig
index bf0c3e6371..7bd727e79f 100644
--- a/zig/lib/std/os/linux.zig
+++ b/zig/lib/std/os/linux.zig
@@ -2065,6 +2065,84 @@ pub fn fremovexattr(fd: usize, name: [*:0]const u8) usize {
     return syscall2(.fremovexattr, fd, @intFromPtr(name));
 }
 
+pub const sched_param = extern struct {
+    priority: i32,
+};
+
+pub const SCHED = packed struct(i32) {
+    pub const Mode = enum(u3) {
+        /// normal multi-user scheduling
+        NORMAL = 0,
+        /// FIFO realtime scheduling
+        FIFO = 1,
+        /// Round-robin realtime scheduling
+        RR = 2,
+        /// For "batch" style execution of processes
+        BATCH = 3,
+        /// Low latency scheduling
+        IDLE = 5,
+        /// Sporadic task model deadline scheduling
+        DEADLINE = 6,
+    };
+    mode: Mode, //bits [0, 2]
+    _3: u27 = 0, //bits [3, 29]
+    /// set to true to stop children from inheriting policies
+    RESET_ON_FORK: bool = false, //bit 30
+    _31: u1 = 0, //bit 31
+};
+
+pub fn sched_setparam(pid: pid_t, param: *const sched_param) usize {
+    return syscall2(.sched_setparam, @as(usize, @bitCast(@as(isize, pid))), @intFromPtr(param));
+}
+
+pub fn sched_getparam(pid: pid_t, param: *sched_param) usize {
+    return syscall2(.sched_getparam, @as(usize, @bitCast(@as(isize, pid))), @intFromPtr(param));
+}
+
+pub fn sched_setscheduler(pid: pid_t, policy: SCHED, param: *const sched_param) usize {
+    return syscall3(.sched_setscheduler, @as(usize, @bitCast(@as(isize, pid))), @intCast(@as(u32, @bitCast(policy))), @intFromPtr(param));
+}
+
+pub fn sched_getscheduler(pid: pid_t) usize {
+    return syscall1(.sched_getscheduler, @as(usize, @bitCast(@as(isize, pid))));
+}
+
+pub fn sched_get_priority_max(policy: SCHED) usize {
+    return syscall1(.sched_get_priority_max, @intCast(@as(u32, @bitCast(policy))));
+}
+
+pub fn sched_get_priority_min(policy: SCHED) usize {
+    return syscall1(.sched_get_priority_min, @intCast(@as(u32, @bitCast(policy))));
+}
+
+pub fn getcpu(cpu: ?*usize, node: ?*usize) usize {
+    return syscall2(.getcpu, @intFromPtr(cpu), @intFromPtr(node));
+}
+
+pub const sched_attr = extern struct {
+    size: u32 = 48, // Size of this structure
+    policy: u32 = 0, // Policy (SCHED_*)
+    flags: u64 = 0, // Flags
+    nice: u32 = 0, // Nice value (SCHED_OTHER, SCHED_BATCH)
+    priority: u32 = 0, // Static priority (SCHED_FIFO, SCHED_RR)
+    // Remaining fields are for SCHED_DEADLINE
+    runtime: u64 = 0,
+    deadline: u64 = 0,
+    period: u64 = 0,
+};
+
+pub fn sched_setattr(pid: pid_t, attr: *const sched_attr, flags: usize) usize {
+    return syscall3(.sched_setattr, @as(usize, @bitCast(@as(isize, pid))), @intFromPtr(attr), flags);
+}
+
+pub fn sched_getattr(pid: pid_t, attr: *sched_attr, size: usize, flags: usize) usize {
+    return syscall4(.sched_getattr, @as(usize, @bitCast(@as(isize, pid))), @intFromPtr(attr), size, flags);
+}
+
+pub fn sched_rr_get_interval(pid: pid_t, tp: *timespec) usize {
+    return syscall2(.sched_rr_get_interval, @as(usize, @bitCast(@as(isize, pid))), @intFromPtr(tp));
+}
+
 pub fn sched_yield() usize {
     return syscall0(.sched_yield);
 }
diff --git a/zig/src/Compilation/Config.zig b/zig/src/Compilation/Config.zig
index b18cd4dd08..a397cf521d 100644
--- a/zig/src/Compilation/Config.zig
+++ b/zig/src/Compilation/Config.zig
@@ -294,6 +294,12 @@ pub fn resolve(options: Options) ResolveError!Config {
         if (options.lto) |x| break :b x;
         if (!options.any_c_source_files) break :b false;
 
+        // https://github.com/llvm/llvm-project/pull/116537
+        if (target.cpu.arch.isMIPS64()) switch (target.abi) {
+            .gnuabin32, .muslabin32 => break :b false,
+            else => {},
+        };
+
         if (target.cpu.arch.isRISCV()) {
             // Clang and LLVM currently don't support RISC-V target-abi for LTO.
             // Compiling with LTO may fail or produce undesired results.
@@ -433,6 +439,7 @@ pub fn resolve(options: Options) ResolveError!Config {
 
     const debug_format: DebugFormat = b: {
         if (root_strip and !options.any_non_stripped) break :b .strip;
+        if (options.debug_format) |x| break :b x;
         break :b switch (target.ofmt) {
             .elf, .goff, .macho, .wasm, .xcoff => .{ .dwarf = .@"32" },
             .coff => .code_view,
diff --git a/zig/src/dev.zig b/zig/src/dev.zig
index 9746b307af..0d365c3e19 100644
--- a/zig/src/dev.zig
+++ b/zig/src/dev.zig
@@ -23,7 +23,7 @@ pub const Env = enum {
     sema,
 
     /// - sema
-    /// - `zig build-* -fno-llvm -fno-lld -target x86_64-linux`
+    /// - `zig build-* -fincremental -fno-llvm -fno-lld -target x86_64-linux --listen=-`
     @"x86_64-linux",
 
     /// - sema
@@ -130,6 +130,8 @@ pub const Env = enum {
                 else => Env.ast_gen.supports(feature),
             },
             .@"x86_64-linux" => switch (feature) {
+                .stdio_listen,
+                .incremental,
                 .x86_64_backend,
                 .elf_linker,
                 => true,
diff --git a/zig/src/link/Elf/ZigObject.zig b/zig/src/link/Elf/ZigObject.zig
index 84b54aabcd..1e29ab8bf6 100644
--- a/zig/src/link/Elf/ZigObject.zig
+++ b/zig/src/link/Elf/ZigObject.zig
@@ -1496,7 +1496,7 @@ pub fn updateFunc(
             });
             defer gpa.free(name);
             const osec = if (self.text_index) |sect_sym_index|
-                self.atom(self.symbol(sect_sym_index).ref.index).?.output_section_index
+                self.symbol(sect_sym_index).output_section_index
             else osec: {
                 const osec = try elf_file.addSection(.{
                     .name = try elf_file.insertShString(".text"),
@@ -1896,12 +1896,13 @@ pub fn deleteExport(
     } orelse return;
     const zcu = elf_file.base.comp.zcu.?;
     const exp_name = name.toSlice(&zcu.intern_pool);
-    const esym_index = metadata.@"export"(self, exp_name) orelse return;
+    const sym_index = metadata.@"export"(self, exp_name) orelse return;
     log.debug("deleting export '{s}'", .{exp_name});
-    const esym = &self.symtab.items(.elf_sym)[esym_index.*];
+    const esym_index = self.symbol(sym_index.*).esym_index;
+    const esym = &self.symtab.items(.elf_sym)[esym_index];
     _ = self.globals_lookup.remove(esym.st_name);
     esym.* = Elf.null_sym;
-    self.symtab.items(.shndx)[esym_index.*] = elf.SHN_UNDEF;
+    self.symtab.items(.shndx)[esym_index] = elf.SHN_UNDEF;
 }
 
 pub fn getGlobalSymbol(self: *ZigObject, elf_file: *Elf, name: []const u8, lib_name: ?[]const u8) !u32 {
diff --git a/zig/test/incremental/add_decl b/zig/test/incremental/add_decl
index a2863d6bde..6b3a0dad84 100644
--- a/zig/test/incremental/add_decl
+++ b/zig/test/incremental/add_decl
@@ -1,5 +1,4 @@
-// Disabled on self-hosted due to linker crash
-// #target=x86_64-linux-selfhosted
+#target=x86_64-linux-selfhosted
 #target=x86_64-linux-cbe
 #target=x86_64-windows-cbe
 #update=initial version
diff --git a/zig/test/incremental/fix_astgen_failure b/zig/test/incremental/fix_astgen_failure
index b94c9c77ee..2298bc5248 100644
--- a/zig/test/incremental/fix_astgen_failure
+++ b/zig/test/incremental/fix_astgen_failure
@@ -1,5 +1,4 @@
-// Disabled on self-hosted due to linker crash
-// #target=x86_64-linux-selfhosted
+#target=x86_64-linux-selfhosted
 #target=x86_64-linux-cbe
 #target=x86_64-windows-cbe
 #update=initial version with error
diff --git a/zig/test/incremental/function_becomes_inline b/zig/test/incremental/function_becomes_inline
index b7e604bfac..607cd6805e 100644
--- a/zig/test/incremental/function_becomes_inline
+++ b/zig/test/incremental/function_becomes_inline
@@ -1,4 +1,4 @@
-//#target=x86_64-linux-selfhosted
+#target=x86_64-linux-selfhosted
 #target=x86_64-linux-cbe
 #target=x86_64-windows-cbe
 #update=non-inline version
diff --git a/zig/test/incremental/recursive_function_becomes_non_recursive b/zig/test/incremental/recursive_function_becomes_non_recursive
index 7a9eb5d26f..e6f27bf2b4 100644
--- a/zig/test/incremental/recursive_function_becomes_non_recursive
+++ b/zig/test/incremental/recursive_function_becomes_non_recursive
@@ -1,4 +1,4 @@
-//#target=x86_64-linux-selfhosted
+#target=x86_64-linux-selfhosted
 #target=x86_64-linux-cbe
 #target=x86_64-windows-cbe
 #update=initial version