support some of gcc's most sensible -x options (#252)

Includes objective-c and go support

1 files changed, 9 insertions, 2 deletions

diff --git a/src/arg.c b/src/arg.c
index 0e7644e..cd82bf0 100644
--- a/src/arg.c
+++ b/src/arg.c
@@ -212,8 +212,15 @@ int dcc_scan_args(char *argv[], char **input_file, char **output_file,
             } else if (!strcmp(a, "-frepo")) {
                 rs_log_info("compiler will emit .rpo files; must be local");
                 return EXIT_DISTCC_FAILED;
-            } else if (str_startswith("-x", a)) {
-                rs_log_info("gcc's -x handling is complex; running locally");
+            } else if (str_startswith("-x", a)
+                       && argv[i+1]
+                       && !str_startswith("c", argv[i+1])
+                       && !str_startswith("c++", argv[i+1])
+                       && !str_startswith("objective-c", argv[i+1])
+                       && !str_startswith("objective-c++", argv[i+1])
+                       && !str_startswith("go", argv[i+1])
+                       ) {
+                rs_log_info("gcc's -x handling is complex; running locally for %s", argv[i+1] ? argv[i+1] : "empty");
                 return EXIT_DISTCC_FAILED;
             } else if (str_startswith("-dr", a)) {
                 rs_log_info("gcc's debug option %s may write extra files; "