--- ./net/dns/host_resolver_manager.cc.orig
+++ ./net/dns/host_resolver_manager.cc
@@ -3014,8 +3014,7 @@
   NetworkChangeNotifier::AddConnectionTypeObserver(this);
   if (system_dns_config_notifier_)
     system_dns_config_notifier_->AddObserver(this);
-#if BUILDFLAG(IS_POSIX) && !BUILDFLAG(IS_APPLE) && !BUILDFLAG(IS_OPENBSD) && \
-    !BUILDFLAG(IS_ANDROID)
+#if defined(__GLIBC__)
   EnsureDnsReloaderInit();
 #endif
 
--- ./net/dns/dns_reloader.cc.orig
+++ ./net/dns/dns_reloader.cc
@@ -6,8 +6,7 @@
 
 #include "build/build_config.h"
 
-#if BUILDFLAG(IS_POSIX) && !BUILDFLAG(IS_APPLE) && !BUILDFLAG(IS_OPENBSD) && \
-    !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_FUCHSIA)
+#if defined(__GLIBC__)
 
 #include <resolv.h>
 
--- ./net/dns/host_resolver_proc.cc.orig
+++ ./net/dns/host_resolver_proc.cc
@@ -176,8 +176,7 @@
   base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
                                                 base::BlockingType::WILL_BLOCK);
 
-#if BUILDFLAG(IS_POSIX) && \
-    !(BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_OPENBSD) || BUILDFLAG(IS_ANDROID))
+#if defined(__GLIBC__)
   DnsReloaderMaybeReload();
 #endif
   absl::optional<AddressInfo> ai;