Add missing const and add warning flags

2 files changed, 2 insertions, 2 deletions

diff --git a/configure b/configure
index 4182f9a..2327929 100755
--- a/configure
+++ b/configure
@@ -374,7 +374,7 @@ fi
 
 # a final configuration tuning
 $cc -v --help > cc_help.txt 2>&1
-W_OPTIONS="declaration-after-statement"
+W_OPTIONS="declaration-after-statement undef strict-prototypes write-strings"
 for i in $W_OPTIONS; do
     O_PRESENT="$(grep -- -W$i cc_help.txt)"
     if test -n "$O_PRESENT"; then  CFLAGS="$CFLAGS -W$i"; fi
diff --git a/tcctools.c b/tcctools.c
index 21aa2a7..ac6850c 100644
--- a/tcctools.c
+++ b/tcctools.c
@@ -101,7 +101,7 @@ ST_FUNC int tcc_tool_ar(TCCState *s1, int argc, char **argv)
     char tfile[260], stmp[20];
     char *file, *name;
     int ret = 2;
-    char *ops_conflict = "habdioptxN";  // unsupported but destructive if ignored.
+    const char *ops_conflict = "habdioptxN";  // unsupported but destructive if ignored.
     int verbose = 0;
 
     i_lib = 0; i_obj = 0;  // will hold the index of the lib and first obj