--- ./third_party/lss/linux_syscall_support.h.orig
+++ ./third_party/lss/linux_syscall_support.h
@@ -1127,6 +1127,12 @@
 #ifndef __NR_fallocate
 #define __NR_fallocate          285
 #endif
+
+#undef __NR_pread
+#define __NR_pread __NR_pread64
+#undef __NR_pwrite
+#define __NR_pwrite __NR_pwrite64
+
 /* End of x86-64 definitions                                                 */
 #elif defined(__mips__)
 #if _MIPS_SIM == _MIPS_SIM_ABI32
--- ./third_party/breakpad/breakpad/src/client/linux/dump_writer_common/ucontext_reader.h.orig
+++ ./third_party/breakpad/breakpad/src/client/linux/dump_writer_common/ucontext_reader.h
@@ -37,6 +37,10 @@
 #include "common/memory.h"
 #include "google_breakpad/common/minidump_format.h"
 
+#if !defined(__GLIBC__)
+	#define _libc_fpstate _fpstate
+#endif
+
 namespace google_breakpad {
 
 // Wraps platform-dependent implementations of accessors to ucontext_t structs.
--- ./third_party/breakpad/breakpad/src/common/linux/elf_core_dump.h.orig
+++ ./third_party/breakpad/breakpad/src/common/linux/elf_core_dump.h
@@ -36,6 +36,7 @@
 #include <elf.h>
 #include <link.h>
 #include <stddef.h>
+#include <limits.h>
 
 #include "common/memory_range.h"
 
--- ./sandbox/linux/suid/process_util.h.orig
+++ ./sandbox/linux/suid/process_util.h
@@ -11,6 +11,14 @@
 #include <stdbool.h>
 #include <sys/types.h>
 
+// Some additional functions
+# define TEMP_FAILURE_RETRY(expression) \
+	(__extension__			\
+	 ({ long int __result;		\
+	  do __result = (long int) (expression); \
+	  while (__result == -1L && errno == EINTR); \
+	  __result; }))
+
 // This adjusts /proc/process/oom_score_adj so the Linux OOM killer
 // will prefer certain process types over others. The range for the
 // adjustment is [-1000, 1000], with [0, 1000] being user accessible.
--- ./sandbox/linux/seccomp-bpf/trap.cc.orig	2020-04-12 08:26:40.184159217 -0400
+++ ./sandbox/linux/seccomp-bpf/trap.cc	2020-04-12 08:46:16.737191222 -0400
@@ -174,7 +174,7 @@
   // If the version of glibc doesn't include this information in
   // siginfo_t (older than 2.17), we need to explicitly copy it
   // into an arch_sigsys structure.
-  memcpy(&sigsys, &info->_sifields, sizeof(sigsys));
+  memcpy(&sigsys, &info->__sifields, sizeof(sigsys));
 #endif
 
 #if defined(__mips__)
diff --git a/chrome/browser/metrics/chrome_browser_main_extra_parts_metrics.cc b/chrome/browser/metrics/chrome_browser_main_extra_parts_metrics.cc
--- ./chrome/browser/metrics/chrome_browser_main_extra_parts_metrics.cc.orig
+++ ./chrome/browser/metrics/chrome_browser_main_extra_parts_metrics.cc
@@ -59,7 +59,9 @@
 // TODO(crbug.com/1052397): Revisit the macro expression once build flag switch
 // of lacros-chrome is complete.
 #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS_LACROS)
+#if defined(__GLIBC__)
 #include <gnu/libc-version.h>
+#endif
 
 #include "base/linux_util.h"
 #include "base/strings/string_split.h"
@@ -321,7 +323,7 @@
 void RecordLinuxGlibcVersion() {
 // TODO(crbug.com/1052397): Revisit the macro expression once build flag switch
 // of lacros-chrome is complete.
-#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS_LACROS)
+#if defined(__GLIBC__) || BUILDFLAG(IS_CHROMEOS_LACROS)
   base::Version version(gnu_get_libc_version());
 
   UMALinuxGlibcVersion glibc_version_result = UMA_LINUX_GLIBC_NOT_PARSEABLE;
--- ./services/device/serial/serial_io_handler_posix.cc.orig	2019-07-03 10:57:32.568171835 -0400
+++ ./services/device/serial/serial_io_handler_posix.cc	2019-07-03 10:57:16.867983031 -0400
@@ -6,6 +6,7 @@
 
 #include <sys/ioctl.h>
 #include <termios.h>
+#include <asm-generic/ioctls.h>
 
 #include <algorithm>
 #include <utility>
diff --git a/third_party/ots/include/opentype-sanitiser.h b/third_party/ots/include/opentype-sanitiser.h
--- ./third_party/ots/src/include/opentype-sanitiser.h
+++ ./third_party/ots/src/include/opentype-sanitiser.h
@@ -20,6 +20,7 @@ typedef unsigned __int64 uint64_t;
 #define htonl(x) _byteswap_ulong (x)
 #define htons(x) _byteswap_ushort (x)
 #else
+#include <sys/types.h>
 #include <arpa/inet.h>
 #include <stdint.h>
 #endif
--- ./base/logging.cc.orig
+++ ./base/logging.cc
@@ -592,8 +592,7 @@
 
 LogMessage::~LogMessage() {
   size_t stack_start = stream_.tellp();
-#if !defined(OFFICIAL_BUILD) && !BUILDFLAG(IS_NACL) && !defined(__UCLIBC__) && \
-    !BUILDFLAG(IS_AIX)
+#if !defined(OFFICIAL_BUILD) && !defined(OS_NACL) && defined(__GLIBC__)
   if (severity_ == LOGGING_FATAL && !base::debug::BeingDebugged()) {
     // Include a stack trace on a fatal, unless a debugger is attached.
     base::debug::StackTrace stack_trace;
--- ./third_party/blink/renderer/platform/wtf/stack_util.cc.orig
+++ ./third_party/blink/renderer/platform/wtf/stack_util.cc
@@ -28,7 +28,7 @@
 // FIXME: On Mac OSX and Linux, this method cannot estimate stack size
 // correctly for the main thread.
 
-#elif defined(__GLIBC__) || BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_FREEBSD) || \
+#elif BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_FREEBSD) || \
     BUILDFLAG(IS_FUCHSIA)
   // pthread_getattr_np() can fail if the thread is not invoked by
   // pthread_create() (e.g., the main thread of blink_unittests).
@@ -96,7 +96,7 @@
 }
 
 void* GetStackStart() {
-#if defined(__GLIBC__) || BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_FREEBSD) || \
+#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_FREEBSD) || \
     BUILDFLAG(IS_FUCHSIA)
   pthread_attr_t attr;
   int error;
--- ./third_party/swiftshader/third_party/llvm-subzero/lib/Support/Unix/Signals.inc.orig	2019-06-18 11:51:17.000000000 -0400
+++ ./third_party/swiftshader/third_party/llvm-subzero/lib/Support/Unix/Signals.inc	2019-07-03 12:32:50.938758186 -0400
@@ -25,7 +25,7 @@
 #include "llvm/Support/raw_ostream.h"
 #include <algorithm>
 #include <string>
-#if HAVE_EXECINFO_H
+#if HAVE_EXECINFO_H && defined(__GLIBC__)
 # include <execinfo.h>         // For backtrace().
 #endif
 #if HAVE_SIGNAL_H
@@ -52,6 +52,7 @@
 #include <unwind.h>
 #else
 #undef HAVE__UNWIND_BACKTRACE
+#undef HAVE_BACKTRACE
 #endif
 #endif
 
--- ./third_party/nasm/nasmlib/realpath.c.orig	2019-07-03 12:23:05.021949895 -0400
+++ ./third_party/nasm/nasmlib/realpath.c	2019-07-03 12:24:24.246862665 -0400
@@ -49,7 +49,7 @@
 
 #include "nasmlib.h"
 
-#ifdef HAVE_CANONICALIZE_FILE_NAME
+#if defined(__GLIBC__)
 
 /*
  * GNU-specific, but avoids the realpath(..., NULL)
--- ./third_party/perfetto/include/perfetto/ext/base/thread_utils.h
+++ ./third_party/perfetto/include/perfetto/ext/base/thread_utils.h
@@ -29,7 +29,7 @@
 #include <algorithm>
 #endif
 
-#if PERFETTO_BUILDFLAG(PERFETTO_OS_ANDROID)
+#if 1
 #include <sys/prctl.h>
 #endif
 
@@ -58,7 +58,7 @@ inline bool MaybeSetThreadName(const std::string& name) {
 
 inline bool GetThreadName(std::string& out_result) {
   char buf[16] = {};
-#if PERFETTO_BUILDFLAG(PERFETTO_OS_ANDROID)
+#if 1
   if (prctl(PR_GET_NAME, buf) != 0)
     return false;
 #else
--- ./net/dns/public/scoped_res_state.cc.orig
+++ ./net/dns/public/scoped_res_state.cc
@@ -13,7 +13,7 @@
 namespace net {
 
 ScopedResState::ScopedResState() {
-#if BUILDFLAG(IS_OPENBSD) || BUILDFLAG(IS_FUCHSIA)
+#if BUILDFLAG(IS_OPENBSD) || BUILDFLAG(IS_FUCHSIA) || defined(_GNU_SOURCE)
   // Note: res_ninit in glibc always returns 0 and sets RES_INIT.
   // res_init behaves the same way.
   memset(&_res, 0, sizeof(_res));
@@ -25,16 +25,8 @@
 }
 
 ScopedResState::~ScopedResState() {
-#if !BUILDFLAG(IS_OPENBSD) && !BUILDFLAG(IS_FUCHSIA)
-
-  // Prefer res_ndestroy where available.
-#if BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_FREEBSD)
-  res_ndestroy(&res_);
-#else
-  res_nclose(&res_);
-#endif  // BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_FREEBSD)
-
-#endif  // !BUILDFLAG(IS_OPENBSD) && !BUILDFLAG(IS_FUCHSIA)
+  // musl res_init() doesn't actually do anything
+  // no destruction is necessary as no memory has been allocated
 }
 
 bool ScopedResState::IsValid() const {