Turn on warnings when building libap.

For ape, we never enabled warnings in cflags.
Turning it on brings up a lot of warnings. Most are noise,
but a few caught unused variables and trunctaions of pointers.
to smaller integers (int, long).

A few warnings remain.

1 files changed, 3 insertions, 3 deletions

diff --git a/sys/src/ape/lib/ap/gen/putenv.c b/sys/src/ape/lib/ap/gen/putenv.c
index 56a1184ba..f92efda3e 100644
--- a/sys/src/ape/lib/ap/gen/putenv.c
+++ b/sys/src/ape/lib/ap/gen/putenv.c
@@ -9,16 +9,16 @@ putenv(const char *str)
 	int n;
 
 	for(n = 0; s2 = environ[n]; n++)
-		for(s1 = str; *s1 == *s2; s1++, s2++)
+		for(s1 = (char *)str; *s1 == *s2; s1++, s2++)
 			if(*s1 == '\0' || *s1 == '='){
-				environ[n] = str;
+				environ[n] = (char*)str;
 				return 0;
 			}
 	e = realloc(environ, (n+1) * sizeof(char*));
 	if(e == 0)
 		return -1;
 	environ = e;
-	e[n++] = str;
+	e[n++] = (char*)str;
 	e[n] = 0;
 	return 0;
 }