Add build system scaffolding and libc headers

1 files changed, 12 insertions, 0 deletions

diff --git a/lib/libc/string/memchr.c b/lib/libc/string/memchr.c
new file mode 100644
index 00000000..38850aed
--- /dev/null
+++ b/lib/libc/string/memchr.c
@@ -0,0 +1,12 @@
+#include <stddef.h>
+
+void *memchr(const void *s, int c, size_t n)
+{
+	const unsigned char *p = s;
+	while (n--) {
+		if (*p == (unsigned char)c)
+			return (void *)p;
+		p++;
+	}
+	return NULL;
+}