Move to using build-ids to tell GDB about libraries

build/config/compiler/BUILD.gn

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/android/config.gni")
 if (cpu_arch == "arm") {
   import("//build/config/arm.gni")
 }
 if (cpu_arch == "mipsel" || cpu_arch == "mips64el") {
   import("//build/config/mips.gni")
@@ skipping 436 matching lines @@
         ldflags += [ "--gcc-toolchain=" +
                      rebase_path(android_toolchain_root, root_build_dir) ]
       }
     }
 
     ldflags += [
       "-Wl,--no-undefined",
 
       # Don't export symbols from statically linked libraries.
       "-Wl,--exclude-libs=ALL",
+
+      # Build-ids make debugging cached libraries (with tmp names) much easier.
+      "-Wl,--build-id",
     ]
     if (cpu_arch == "arm") {
       ldflags += [
         # Enable identical code folding to reduce size.
         "-Wl,--icf=safe",
       ]
     }
 
     if (is_clang) {
       if (cpu_arch == "arm") {
@@ skipping 573 matching lines @@
       cflags += [ "-gsplit-dwarf" ]
     }
   }
 }
 
 config("no_symbols") {
   if (!is_win) {
     cflags = [ "-g0" ]
   }
 }