Remove disassembler_objdump from the build on non-linux platforms.

Change-Id: I29d628ac7cf79bfca1794ba325c945a0f122b360
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/3964364
Reviewed-by: Ivan Penkov <ivanpe@chromium.org>

src/processor/minidump_processor.cc

@@ -44,11 +44,14 @@
 #include "google_breakpad/processor/process_state.h"
 #include "google_breakpad/processor/exploitability.h"
 #include "google_breakpad/processor/stack_frame_symbolizer.h"
-#include "processor/disassembler_objdump.h"
 #include "processor/logging.h"
 #include "processor/stackwalker_x86.h"
 #include "processor/symbolic_constants_win.h"
 
+#ifdef __linux__
+#include "processor/disassembler_objdump.h"
+#endif
+
 namespace google_breakpad {
 
 MinidumpProcessor::MinidumpProcessor(SymbolSupplier* supplier,
@@ -770,6 +773,7 @@ static bool IsCanonicalAddress(uint64_t address) {
   return true;
 }
 
+#ifdef __linux__
 static void CalculateFaultAddressFromInstruction(Minidump* dump,
                                                  uint64_t* address) {
   MinidumpException* exception = dump->GetException();
@@ -832,6 +836,7 @@ static void CalculateFaultAddressFromInstruction(Minidump* dump,
     *address = write_address;
   }
 }
+#endif // __linux__
 
 // static
 string MinidumpProcessor::GetCrashReason(Minidump* dump, uint64_t* address,
@@ -2070,6 +2075,7 @@ string MinidumpProcessor::GetCrashReason(Minidump* dump, uint64_t* address,
       static_cast<MDCPUArchitecture>(raw_system_info->processor_architecture),
       *address);
 
+#ifdef __linux__
     // For invalid accesses to non-canonical addresses, amd64 cpus don't provide
     // the fault address, so recover it from the disassembly and register state
     // if possible.
@@ -2078,6 +2084,7 @@ string MinidumpProcessor::GetCrashReason(Minidump* dump, uint64_t* address,
         && std::numeric_limits<uint64_t>::max() == *address) {
       CalculateFaultAddressFromInstruction(dump, address);
     }
+#endif // __linux__
   }
 
   return reason;