--- cmp/cmp.c
+++ cmp/cmp.c
@@ -264,7 +264,7 @@ openfile(const char *fn)
 	struct file	*f;
 
 	if (pagesize == 0)
-		if ((pagesize = sysconf(_SC_PAGESIZE)) < 0)
+		if ((pagesize = 4096) < 0)
 			pagesize = 4096;
 	if ((f = memalign(pagesize, sizeof *f)) == NULL) {
 		write(2, "no memory\n", 10);
--- copy/copy.c
+++ copy/copy.c
@@ -362,7 +362,7 @@ fdcopy(const char *src, const struct stat *sp, int sfd,
 			goto err;
 	}
 #endif	/* __linux__ */
-	if (pagesize == 0 && (pagesize = sysconf(_SC_PAGESIZE)) <= 0)
+	if (pagesize == 0 && (pagesize = 4096) <= 0)
 		pagesize = 4096;
 	if ((blksize = sp->st_blksize) <= 0)
 		blksize = 512;
--- cp/cp.c
+++ cp/cp.c
@@ -438,7 +438,7 @@ fdcopy(const char *src, const struct stat *ssp, const int sfd,
 	}
 #endif	/* __linux__ */
 	if (pagesize == 0)
-		if ((pagesize = sysconf(_SC_PAGESIZE)) < 0)
+		if ((pagesize = 4096) < 0)
 			pagesize = 4096;
 	if (bflag)
 		blksize = bflag;
--- libcommon/ib_alloc.c
+++ libcommon/ib_alloc.c
@@ -41,7 +41,7 @@ ib_alloc(int fd, unsigned blksize)
 	struct stat	st;
 
 	if (pagesize == 0)
-		if ((pagesize = sysconf(_SC_PAGESIZE)) < 0)
+		if ((pagesize = 4096) < 0)
 			pagesize = 4096;
 	if (blksize == 0) {
 		if (fstat(fd, &st) < 0)
--- libcommon/memalign.c
+++ libcommon/memalign.c
@@ -40,7 +40,7 @@ memalign(size_t alignment, size_t size)
 	static long	pagesize;
 
 	if (pagesize == 0)
-		pagesize = sysconf(_SC_PAGESIZE);
+		pagesize = 4096;
 	if (alignment != pagesize)
 		return NULL;
 	if (size < pagesize)
--- libcommon/oblok.c
+++ libcommon/oblok.c
@@ -100,7 +100,7 @@ ob_alloc(int fd, enum ob_mode bf)
 	struct oblok	*op;
 
 	if (pagesize == 0)
-		if ((pagesize = sysconf(_SC_PAGESIZE)) < 0)
+		if ((pagesize = 4096) < 0)
 			pagesize = 4096;
 	if ((op = memalign(pagesize, sizeof *op)) == NULL)
 		return NULL;
--- xargs/xargs.c
+++ xargs/xargs.c
@@ -404,7 +404,7 @@ static void
 endcmd(void)
 {
 	a_agg = a_cnt;
-	a_maxsize = sysconf(_SC_ARG_MAX) - envsz() - 2048 - a_asz;
+	a_maxsize = 65536 - envsz() - 2048 - a_asz;
 	if (nflag || sflag) {
 		long	newsize = sflag ? atol(sflag) :
 #ifdef	WEIRD_LIMITS