Get our copy of breakpad, such as it is, building against NDK R15C

- Likely we should "soon" upgrade breakpad/crashpad and the NDK to a mutually agreed-upon version

external/breakpad/android/google_breakpad/Android.mk

@@ -96,7 +96,7 @@ LOCAL_SRC_FILES := \
 
 # Embedded stackwalker sources (to be able to process crashes in-situ on Android device)
 ifeq ($(EMBEDDED_STACKWALKER),1)
-LOCAL_CPPFLAGS += -DEMBEDDED_STACKWALKER=1 -frtti
+LOCAL_CPPFLAGS += -DAPPLE2IX -DEMBEDDED_STACKWALKER=1 -frtti
 LOCAL_SRC_FILES += \
     src/processor/basic_code_modules.cc \
     src/processor/basic_source_line_resolver.cc \

external/breakpad/src/client/linux/handler/exception_handler.cc

@@ -106,7 +106,12 @@
 #endif
 
 // A wrapper for the tgkill syscall: send a signal to a specific thread.
+#if APPLE2IX
+#define tgkill _tgkill
+static int _tgkill(pid_t tgid, pid_t tid, int sig) {
+#else
 static int tgkill(pid_t tgid, pid_t tid, int sig) {
+#endif
   return syscall(__NR_tgkill, tgid, tid, sig);
   return 0;
 }

external/breakpad/src/common/android/include/link.h

@@ -43,6 +43,7 @@
 extern "C" {
 #endif  // __cplusplus
 
+#if !APPLE2IX
 struct r_debug {
   int              r_version;
   struct link_map* r_map;
@@ -61,6 +62,7 @@ struct link_map {
   struct link_map* l_next;
   struct link_map* l_prev;
 };
+#endif // !APPLE2IX
 
 #ifdef __cplusplus
 }  // extern "C"

external/breakpad/src/common/android/include/sys/user.h

@@ -46,7 +46,9 @@
 #ifdef __cplusplus
 extern "C" {
 #endif  // __cplusplus
+#if !APPLE2IX
 typedef struct user_fxsr_struct user_fpxregs_struct;
+#endif // !APPLE2IX
 #ifdef __cplusplus
 }  // extern "C"
 #endif  // __cplusplus
@@ -56,6 +58,7 @@ typedef struct user_fxsr_struct user_fpxregs_struct;
 #ifdef __cplusplus
 extern "C" {
 #endif  // __cplusplus
+#if !APPLE2IX
 struct user_regs_struct {
  __u64 regs[31];
  __u64 sp;
@@ -67,6 +70,7 @@ struct user_fpsimd_struct {
  __u32 fpsr;
  __u32 fpcr;
 };
+#endif // !APPLE2IX
 #ifdef __cplusplus
 }  // extern "C"
 #endif  // __cplusplus