driver: -w, update help

3 files changed, 9 insertions, 2 deletions

diff --git a/common.h b/common.h
index 862a271..6cf1b21 100644
--- a/common.h
+++ b/common.h
@@ -132,6 +132,7 @@ struct option {
    bool nocolor;
    bool pie, pic;
    bool werror;
+   bool wnone;
    enum optz {
       OPT0 = -1,
       OPT1 = 1,
diff --git a/io.c b/io.c
index 59481bd..cbb8568 100644
--- a/io.c
+++ b/io.c
@@ -1116,6 +1116,7 @@ warn(const struct span *span, const char *fmt, ...)
 {
    va_list ap;
 
+   if (ccopt.wnone) return;
    if (ccopt.werror) ++nerror;
    va_start(ap, fmt);
    vdiag(span, ccopt.werror ? DGERROR : DGWARN, fmt, ap);
diff --git a/main.c b/main.c
index b6b60f0..cf34f1e 100644
--- a/main.c
+++ b/main.c
@@ -217,6 +217,9 @@ optparse(char **args)
             ccopt.werror = 1;
          }
          /* TODO warning switches */
+      } else if (*arg == 'w') {
+         ccopt.wnone = 1;
+         /* TODO warning switches */
       } else Bad: warn(NULL, "unrecognized option: %'s", arg-1);
    }
 
@@ -583,9 +586,11 @@ prihelp(void)
         " -llib  \tLink with library\n"
         " -fpie  \tEmit code for position independent executable\n"
         " -fpic  \tEmit position independent code\n"
-        " -O0    \tTurn off optimizations\n"
-        " -O1    \tTurn on more optimizations\n"
+        " -O[0|1..] \tSet optimization level\n"
         " -x[c|o] \tSpecify type of next input file (C, object)\n"
+        " -W[...] \tTurn on warnings (stub)\n"
+        " -Werror \tTurn warnings into errors\n"
+        " -w     \tSuppress warnings\n"
    );
 }