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, 4 insertions, 4 deletions

diff --git a/sys/src/ape/lib/ap/gen/strstr.c b/sys/src/ape/lib/ap/gen/strstr.c
index 4e6828571..520f992b8 100644
--- a/sys/src/ape/lib/ap/gen/strstr.c
+++ b/sys/src/ape/lib/ap/gen/strstr.c
@@ -2,19 +2,19 @@
 
 /* Return pointer to first occurrence of s2 in s1, NULL if none */
 
-char
-*strstr(const char *s1, const char *s2)
+char*
+strstr(const char *s1, const char *s2)
 {
 	char *p, *pa, *pb;
 	int c0, c;
 
 	c0 = *s2;
 	if(c0 == 0)
-		return s1;
+		return (char *)s1;
 	s2++;
 	for(p=strchr(s1, c0); p; p=strchr(p+1, c0)) {
 		pa = p;
-		for(pb=s2;; pb++) {
+		for(pb=(char*)s2;; pb++) {
 			c = *pb;
 			if(c == 0)
 				return p;