diff --git a/lang/cem/libcc.ansi/string/.distr b/lang/cem/libcc.ansi/string/.distr
new file mode 100644
index 000000000..b59e61d48
--- /dev/null
+++ b/lang/cem/libcc.ansi/string/.distr
@@ -0,0 +1,24 @@
+LIST
+Makefile
+memchr.c
+memcmp.c
+memcpy.c
+memmove.c
+memset.c
+strcat.c
+strchr.c
+strcmp.c
+strcoll.c
+strcpy.c
+strcspn.c
+strerror.c
+strlen.c
+strncat.c
+strncmp.c
+strncpy.c
+strpbrk.c
+strrchr.c
+strspn.c
+strstr.c
+strtok.c
+strxfrm.c
diff --git a/lang/cem/libcc.ansi/string/LIST b/lang/cem/libcc.ansi/string/LIST
index 796c99208..5f594fd11 100644
--- a/lang/cem/libcc.ansi/string/LIST
+++ b/lang/cem/libcc.ansi/string/LIST
@@ -1,4 +1,3 @@
-libs
 memchr.c
 memcmp.c
 memcpy.c
diff --git a/lang/cem/libcc.ansi/string/Makefile b/lang/cem/libcc.ansi/string/Makefile
new file mode 100644
index 000000000..4bd90086f
--- /dev/null
+++ b/lang/cem/libcc.ansi/string/Makefile
@@ -0,0 +1,35 @@
+CFLAGS=-L -LIB
+
+.SUFFIXES: .o .e .c
+
+.e.o:
+	$(CC) $(CFLAGS) -c -o $@ $*.e
+
+clean:
+	rm -rf memchr.o memcmp.o memcpy.o memmove.o memset.o strcat.o \
+		strchr.o strcmp.o strcoll.o strcpy.o strcspn.o strerror.o \
+		strncat.o strncpy.o strrchr.o strstr.o strlen.o strtok.o \
+		strpbrk.o strspn.o strncmp.o strxfrm.o OLIST
+
+memchr.o:
+memcmp.o:
+memcpy.o:
+memmove.o:
+memset.o:
+strcat.o:
+strchr.o:
+strcmp.o:
+strcoll.o:
+strcpy.o:
+strcspn.o:
+strerror.o:
+strncat.o:
+strncpy.o:
+strrchr.o:
+strstr.o:
+strlen.o:
+strtok.o:
+strpbrk.o:
+strspn.o:
+strncmp.o:
+strxfrm.o:
diff --git a/lang/cem/libcc.ansi/string/memchr.c b/lang/cem/libcc.ansi/string/memchr.c
index f5dbd0a1b..b91644a29 100644
--- a/lang/cem/libcc.ansi/string/memchr.c
+++ b/lang/cem/libcc.ansi/string/memchr.c
@@ -9,13 +9,13 @@
 void *
 memchr(const void *s, int c, register size_t n)
 {
-	register unsigned char *s1 = (unsigned char *)s;
+	register const unsigned char *s1 = s;
 	unsigned char c1 = (unsigned char) c;
 	
 	while (n > 0) {
 		n--;
 		if (*s1++ == c1)
-			return (void *) --s1;
+			return (void *) (s1 - 1);
 	}
-	return (void *) NULL;
+	return NULL;
 }
diff --git a/lang/cem/libcc.ansi/string/memcmp.c b/lang/cem/libcc.ansi/string/memcmp.c
index 0f9bd84ee..8ae481b33 100644
--- a/lang/cem/libcc.ansi/string/memcmp.c
+++ b/lang/cem/libcc.ansi/string/memcmp.c
@@ -7,12 +7,14 @@
 #include	<string.h>
 
 int
-memcmp(register const void *s1, register const void *s2, size_t n)
+memcmp(const void *s1, const void *s2, size_t n)
 {
+	register const char *p1 = s1, *p2 = s2;
+
 	while (n > 0) {
 		n--;
-		if (*s1++ != *s2++)
-			return *--s1 - *--s2;
+		if (*p1++ != *p2++)
+			return *--p1 - *--p2;
 	}
 	return 0;
 }
diff --git a/lang/cem/libcc.ansi/string/memcpy.c b/lang/cem/libcc.ansi/string/memcpy.c
index a36010ac8..11b27b0c7 100644
--- a/lang/cem/libcc.ansi/string/memcpy.c
+++ b/lang/cem/libcc.ansi/string/memcpy.c
@@ -9,11 +9,13 @@
 void *
 memcpy(register void *s1, register const void *s2, register size_t n)
 {
-	void *ret = s1;
+	register char *p1 = s1;
+	register const char *p2 = s2;
+
 
 	while (n > 0) {
 		n--;
-		*s1++ = *s2++;
+		*p1++ = *p2++;
 	}
-	return ret;
+	return s1;
 }
diff --git a/lang/cem/libcc.ansi/string/memmove.c b/lang/cem/libcc.ansi/string/memmove.c
index baa45bcfe..33c7f5b74 100644
--- a/lang/cem/libcc.ansi/string/memmove.c
+++ b/lang/cem/libcc.ansi/string/memmove.c
@@ -7,22 +7,23 @@
 #include	<string.h>
 
 void *
-memmove(register void *s1, register const void *s2, register size_t n)
+memmove(void *s1, const void *s2, register size_t n)
 {
-	void *ret = s1;
+	register char *p1 = s1;
+	register const char *p2 = s2;
 
-	if (s2 <= s1 && s2 + (n-1) >= s1) {
+	if (p2 <= p1 && p2 + (n-1) >= p1) {
 		/* overlap, copy backwards */
-		s1 += n;
-		s2 += n;
+		p1 += n;
+		p2 += n;
 		while (n > 0) {
 			n--;
-			*--s1 = *--s2;
+			*--p1 = *--p2;
 		}
 	} else
 		while (n > 0) {
 			n--;
-			*s1++ = *s2++;
+			*p1++ = *p2++;
 		}
-	return ret;
+	return s1;
 }
diff --git a/lang/cem/libcc.ansi/string/memset.c b/lang/cem/libcc.ansi/string/memset.c
index 6fa8b9785..469de4f16 100644
--- a/lang/cem/libcc.ansi/string/memset.c
+++ b/lang/cem/libcc.ansi/string/memset.c
@@ -9,7 +9,7 @@
 void *
 memset(void *s, int c, register size_t n)
 {
-	register void *s1 = s;
+	register char *s1 = s;
 
 	while (n > 0) {
 		n--;
diff --git a/lang/cem/libcc.ansi/string/strchr.c b/lang/cem/libcc.ansi/string/strchr.c
index 1a14e672b..979f4354d 100644
--- a/lang/cem/libcc.ansi/string/strchr.c
+++ b/lang/cem/libcc.ansi/string/strchr.c
@@ -13,7 +13,7 @@ strchr(register const char *s, int c)
 
 	do {
 		if (*s == c1)
-			return s;
+			return (char *)s;
 	} while (*s++ != '\0');
 
 	return (char *)NULL;
diff --git a/lang/cem/libcc.ansi/string/strcspn.c b/lang/cem/libcc.ansi/string/strcspn.c
index 8db4d1a33..fbdc1d022 100644
--- a/lang/cem/libcc.ansi/string/strcspn.c
+++ b/lang/cem/libcc.ansi/string/strcspn.c
@@ -9,7 +9,7 @@
 size_t
 strcspn(const char *string, const char *notin)
 {
-	register char *s1, *s2;
+	register const char *s1, *s2;
 
 	for (s1 = string; *s1; s1++) {
 		for(s2 = notin; *s2 != *s1 && *s2; s2++)
diff --git a/lang/cem/libcc.ansi/string/strerror.c b/lang/cem/libcc.ansi/string/strerror.c
index 7bb41b503..a5841c7c8 100644
--- a/lang/cem/libcc.ansi/string/strerror.c
+++ b/lang/cem/libcc.ansi/string/strerror.c
@@ -14,5 +14,5 @@ strerror(register int errnum)
 
   	if (errnum < 0 || errnum >= _sys_nerr)
 		return "unknown error";
-	return _sys_errlist[errnum];
+	return (char *)_sys_errlist[errnum];
 }
diff --git a/lang/cem/libcc.ansi/string/strlen.c b/lang/cem/libcc.ansi/string/strlen.c
index bd4cb81bc..ca8f7d838 100644
--- a/lang/cem/libcc.ansi/string/strlen.c
+++ b/lang/cem/libcc.ansi/string/strlen.c
@@ -9,7 +9,7 @@
 size_t
 strlen(register const char *s)
 {
-	char *org = s;
+	const char *org = s;
 
 	while (*s++)
 		/* EMPTY */ ;
diff --git a/lang/cem/libcc.ansi/string/strpbrk.c b/lang/cem/libcc.ansi/string/strpbrk.c
index a0c4cdb40..5f08731bb 100644
--- a/lang/cem/libcc.ansi/string/strpbrk.c
+++ b/lang/cem/libcc.ansi/string/strpbrk.c
@@ -9,13 +9,13 @@
 char *
 strpbrk(register const char *string, register const char *brk)
 {
-	register char *s1;
+	register const char *s1;
 
 	while (*string) {
 		for (s1 = brk; *s1 && *s1 != *string; s1++)
 			/* EMPTY */ ;
 		if (*s1)
-			return string;
+			return (char *)string;
 		string++;
 	}
 	return (char *)NULL;
diff --git a/lang/cem/libcc.ansi/string/strrchr.c b/lang/cem/libcc.ansi/string/strrchr.c
index 1bf6cea43..e98d8d7cf 100644
--- a/lang/cem/libcc.ansi/string/strrchr.c
+++ b/lang/cem/libcc.ansi/string/strrchr.c
@@ -9,7 +9,7 @@
 char *
 strrchr(register const char *s, int c)
 {
-	register char *result;
+	register const char *result;
 	register char c1 = (char) c;
 
 	result = (char *)NULL;
@@ -18,5 +18,5 @@ strrchr(register const char *s, int c)
 			result = s;
 	} while (*s++);
 
-	return(result);
+	return (char *)result;
 }
diff --git a/lang/cem/libcc.ansi/string/strstr.c b/lang/cem/libcc.ansi/string/strstr.c
index 18d7ae8fd..4c2b23444 100644
--- a/lang/cem/libcc.ansi/string/strstr.c
+++ b/lang/cem/libcc.ansi/string/strstr.c
@@ -11,8 +11,9 @@ strstr(register const char *s, register const char *wanted)
 {
 	int len = strlen(wanted);
 
+	if (len == 0) return (char *)s;
 	while (*s != *wanted || strncmp(s, wanted, len))
 		if (*s++ == '\0')
 			return (char *)NULL;
-	return s;
+	return (char *)s;
 }
diff --git a/lang/cem/libcc.ansi/string/strxfrm.c b/lang/cem/libcc.ansi/string/strxfrm.c
index 3ec1b3acb..92e0c76c0 100644
--- a/lang/cem/libcc.ansi/string/strxfrm.c
+++ b/lang/cem/libcc.ansi/string/strxfrm.c
@@ -9,7 +9,7 @@
 size_t
 strxfrm(register char *s1, register const char *s2, register size_t n)
 {
-	char *save = s2;
+	const char *save = s2;
 
 	while (*s2) {
 		if (n > 1) {