Add support for building the Linux client code using the Android NDK

r=mwu at http://breakpad.appspot.com/212001/show

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@716 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/client/linux/minidump_writer/linux_dumper.h

@@ -34,18 +34,38 @@
 #include <linux/limits.h>
 #include <stdint.h>
 #include <sys/types.h>
+#if !defined(__ANDROID__)
 #include <sys/user.h>
+#endif
 
 #include "common/memory.h"
 #include "google_breakpad/common/minidump_format.h"
 
 namespace google_breakpad {
 
+#if defined(__i386) || defined(__x86_64)
 typedef typeof(((struct user*) 0)->u_debugreg[0]) debugreg_t;
+#endif
 
 // Typedef for our parsing of the auxv variables in /proc/pid/auxv.
 #if defined(__i386) || defined(__ARM_EABI__)
+#if !defined(__ANDROID__)
 typedef Elf32_auxv_t elf_aux_entry;
+#else
+// Android is missing this structure definition
+typedef struct
+{
+  uint32_t a_type;              /* Entry type */
+  union
+    {
+      uint32_t a_val;           /* Integer value */
+    } a_un;
+} elf_aux_entry;
+
+#if !defined(AT_SYSINFO_EHDR)
+#define AT_SYSINFO_EHDR 33
+#endif
+#endif  // __ANDROID__
 #elif defined(__x86_64__)
 typedef Elf64_auxv_t elf_aux_entry;
 #endif
@@ -76,8 +96,12 @@ struct ThreadInfo {
 
 #elif defined(__ARM_EABI__)
   // Mimicking how strace does this(see syscall.c, search for GETREGS)
+#if defined(__ANDROID__)
+  struct pt_regs regs;
+#else
   struct user_regs regs;
   struct user_fpregs fpregs;
+#endif  // __ANDROID__
 #endif
 };