Sync with recent changes to old wrapper.

Old wrapper changes:
https://chromium.git.corp.google.com/chromiumos/overlays/chromiumos-overlay/+/bebf19ee4322c26d7cb548c8f4419dfe1c6e3c11
https://chromium.git.corp.google.com/chromiumos/overlays/chromiumos-overlay/+/cc6e225d3894f99b320584b2f41ff6a68f76d6a7

BUG=chromium:773875
TEST=unit test

Change-Id: I927bcb6082d1b67ca9efde0001e43e0a0a36c3b4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/1710403
Tested-by: Tobias Bosch <tbosch@google.com>
Reviewed-by: George Burgess <gbiv@chromium.org>
diff --git a/compiler_wrapper/config.go b/compiler_wrapper/config.go
index 9256559..9dce8fe 100644
--- a/compiler_wrapper/config.go
+++ b/compiler_wrapper/config.go
@@ -93,6 +93,7 @@
 			"-Wno-tautological-unsigned-enum-zero-compare",
 			"-Wno-unknown-warning-option",
 			"-Wno-section",
+			"-static-libgcc",
 		},
 		newWarningsDir: "/tmp/fatal_clang_warnings",
 	}
@@ -120,6 +121,7 @@
 			"-Wno-tautological-unsigned-enum-zero-compare",
 			"-Wno-unknown-warning-option",
 			"-Wno-section",
+			"-static-libgcc",
 		},
 		newWarningsDir: "/tmp/fatal_clang_warnings",
 	}