From 0379d7b4317e7e12d27b66f8a44a443d328ce539 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Sun, 13 Sep 2020 23:04:15 -0700
Subject: [PATCH] stage2: don't bother building glibc when only doing build-obj

---
 src-self-hosted/Compilation.zig | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src-self-hosted/Compilation.zig b/src-self-hosted/Compilation.zig
index a3a99aee6f..82d8b0d5a0 100644
--- a/src-self-hosted/Compilation.zig
+++ b/src-self-hosted/Compilation.zig
@@ -1548,7 +1548,12 @@ fn addBuildingGLibCWorkItems(comp: *Compilation) !void {
 }
 
 fn wantBuildGLibCFromSource(comp: *Compilation) bool {
-    return comp.bin_file.options.link_libc and
+    const is_exe_or_dyn_lib = switch (comp.bin_file.options.output_mode) {
+        .Obj => false,
+        .Lib => comp.bin_file.options.link_mode == .Dynamic,
+        .Exe => true,
+    };
+    return comp.bin_file.options.link_libc and is_exe_or_dyn_lib and
         comp.bin_file.options.libc_installation == null and
         comp.bin_file.options.target.isGnuLibC();
 }