Fix Mac Breakpad host tools to build in Linux cross-compile

src/tools/mac/dump_syms/dump_syms_tool.cc

Index: src/tools/mac/dump_syms/dump_syms_tool.cc
diff --git a/src/tools/mac/dump_syms/dump_syms_tool.mm b/src/tools/mac/dump_syms/dump_syms_tool.cc
similarity index 92%
rename from src/tools/mac/dump_syms/dump_syms_tool.mm
rename to src/tools/mac/dump_syms/dump_syms_tool.cc
index 7d56809a885ebf92cc7ac9ac1133ac389fe64409..54f29226116dfc4669b434d4a892d01080d6f421 100644
--- a/src/tools/mac/dump_syms/dump_syms_tool.mm
+++ b/src/tools/mac/dump_syms/dump_syms_tool.cc
@@ -29,12 +29,13 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// dump_syms_tool.mm: Command line tool that uses the DumpSymbols class.
+// dump_syms_tool.cc: Command line tool that uses the DumpSymbols class.
 // TODO(waylonis): accept stdin
 
 #include <mach-o/arch.h>
 #include <unistd.h>
 
+#include <algorithm>
 #include <iostream>
 #include <vector>
 
@@ -51,8 +52,9 @@ using std::vector;
 struct Options {
   Options()
       : srcPath(), dsymPath(), arch(), cfi(true), handle_inter_cu_refs(true) {}
-  NSString *srcPath;
-  NSString *dsymPath;
+
+  string srcPath;
+  string dsymPath;
   const NXArchInfo *arch;
   bool cfi;
   bool handle_inter_cu_refs;
@@ -114,8 +116,10 @@ static bool Start(const Options &options) {
   // requested, then consider the Module as "split" and dump all the debug data
   // from the primary debug info file, the dSYM, and then dump additional CFI
   // data from the source Mach-O file.
-  bool split_module = options.dsymPath && options.srcPath && options.cfi;
-  NSString* primary_file = split_module ? options.dsymPath : options.srcPath;
+  bool split_module =
+    !options.dsymPath.empty() && !options.srcPath.empty() && options.cfi;
+  const string& primary_file =
+    split_module ? options.dsymPath : options.srcPath;
 
   if (!dump_symbols.Read(primary_file))
     return false;
@@ -124,7 +128,7 @@ static bool Start(const Options &options) {
     if (!dump_symbols.SetArchitecture(options.arch->cputype,
                                       options.arch->cpusubtype)) {
       fprintf(stderr, "%s: no architecture '%s' is present in file.\n",
-              [primary_file fileSystemRepresentation], options.arch->name);
+              primary_file.c_str(), options.arch->name);
       size_t available_size;
       const SuperFatArch *available =
         dump_symbols.AvailableArchitectures(&available_size);
@@ -214,8 +218,7 @@ static void SetupOptions(int argc, const char *argv[], Options *options) {
         break;
       }
       case 'g':
-        options->dsymPath = [[NSFileManager defaultManager]
-            stringWithFileSystemRepresentation:optarg length:strlen(optarg)];
+        options->dsymPath = optarg;
         break;
       case 'c':
         options->cfi = false;
@@ -237,21 +240,16 @@ static void SetupOptions(int argc, const char *argv[], Options *options) {
     exit(1);
   }
 
-  options->srcPath = [[NSFileManager defaultManager]
-                       stringWithFileSystemRepresentation:argv[optind]
-                       length:strlen(argv[optind])];
+  options->srcPath = argv[optind];
 }
 
 //=============================================================================
 int main (int argc, const char * argv[]) {
-  NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
   Options options;
   bool result;
 
   SetupOptions(argc, argv, &options);
   result = Start(options);
 
-  [pool release];
-
   return !result;
 }