Let hipcc handle static library for hip-clang

[ROCm/hip commit: f6316a95b8]

projects/hip/bin/hipcc

@@ -455,6 +455,53 @@ foreach $arg (@ARGV)
         close $in;
         close $out;
         $arg = "$new_arg -Wl,\@$new_file";
+    } elsif (($arg =~ m/\.a$/ || $arg =~ m/\.lo$/) &&
+             $HIP_PLATFORM eq 'clang') {
+        ## process static library for hip-clang
+        ## extract object files from static library and pass them directly to
+        ## hip-clang.
+        ## ToDo: Remove this after hip-clang switch to lto and lld is able to
+        ## handle clang-offload-bundler bundles.
+        
+        my $new_arg = "";
+        my $tmpdir = get_temp_dir ();
+        my $libFile = $arg;
+        my $path = abs_path($arg);
+        my @objs = split ('\n', `cd $tmpdir; ar xv $path`);
+        ## Check if all files in .a are object files.
+        my $allIsObj = 1;
+        my $realObjs = "";
+        foreach my $obj (@objs) {
+            chomp $obj;
+            $obj =~ s/^x - //;
+            $obj = "$tmpdir/$obj";
+            my $fileType = `file $obj`;
+            my $isObj = ($fileType =~ m/ELF/ or $fileType =~ m/COFF/);
+            $allIsObj = ($allIsObj and $isObj);
+            if ($isObj) {
+                $realObjs = ($realObjs . " " . $obj);
+            } else {
+                push (@inputs, $obj);
+                if ($new_arg ne "") {
+                    $new_arg .= " ";
+                }
+                $new_arg .= "$obj";
+            }
+        }
+        chomp $realObjs;
+        if ($allIsObj) {
+            $new_arg = $arg;
+        } elsif ($realObjs) {
+            my($libBaseName, $libDir, $libExt) = fileparse($libFile);
+            $libBaseName = mktemp($libBaseName . "XXXX") . $libExt;
+            system("cd $tmpdir; ar c $libBaseName $realObjs");
+            $new_arg .= " $tmpdir/$libBaseName";
+        }
+        $arg = "$new_arg";
+        if ($toolArgs =~ m/-Xlinker$/) {
+            $toolArgs = substr $toolArgs, 0, -8;
+            chomp $toolArgs;
+        }
     } elsif ($arg =~ m/^-/) {
         # options start with -