diff -Naur module-init-tools-3.16-orig/depmod.c module-init-tools-3.16/depmod.c
--- module-init-tools-3.16-orig/depmod.c	2011-06-02 13:55:01.000000000 -0400
+++ module-init-tools-3.16/depmod.c	2011-10-01 23:30:14.947293695 -0400
@@ -48,10 +48,6 @@
 
 #include "testing.h"
 
-#ifndef MODULE_DIR
-#define MODULE_DIR "/lib/modules/"
-#endif
-
 #ifndef MODULE_BUILTIN_KEY
 #define MODULE_BUILTIN_KEY "built-in"
 #endif
@@ -1514,6 +1510,7 @@
 			     struct module_overrides **overrides)
 {
 	char *line;
+	char *module_dir;
 	unsigned int linenum = 0;
 	FILE *cfile;
 
@@ -1536,6 +1533,9 @@
 			continue;
 		}
 
+		if((module_dir = getenv("MODULE_DIR")) == NULL)
+			module_dir = "/lib/modules/";
+
 		if (streq(cmd, "search")) {
 			char *search_path;
 			
@@ -1550,7 +1550,7 @@
 					continue;
 				}
 				nofail_asprintf(&dirname, "%s%s%s/%s", basedir,
-					MODULE_DIR, kernelversion, search_path);
+					module_dir, kernelversion, search_path);
 				len = strlen(dirname);
 				*search = add_search(dirname, len, *search);
 				free(dirname);
@@ -1565,7 +1565,7 @@
 				continue;
 
 			nofail_asprintf(&pathname, "%s%s%s/%s/%s.ko", basedir,
-				MODULE_DIR, kernelversion, subdir, modname);
+				module_dir, kernelversion, subdir, modname);
 
 			*overrides = add_override(pathname, *overrides);
 			free(pathname);
@@ -1737,6 +1737,7 @@
 	char *basedir = "", *dirname, *version;
 	char *system_map = NULL, *module_symvers = NULL;
 	int i;
+	char *module_dir;
 	const char *config = NULL;
 
 	if (native_endianness() == 0)
@@ -1832,7 +1833,10 @@
 	if (optind == argc)
 		all = 1;
 
-	nofail_asprintf(&dirname, "%s%s%s", basedir, MODULE_DIR, version);
+	if((module_dir = getenv("MODULE_DIR")) == NULL)
+		module_dir = "/lib/modules/";
+
+	nofail_asprintf(&dirname, "%s%s%s", basedir, module_dir, version);
 
 	if (maybe_all) {
 		if (!doing_stdout && !depfile_out_of_date(dirname))
@@ -1850,7 +1854,7 @@
 		size_t len;
 
 		nofail_asprintf(&dirname, "%s%s%s/updates", basedir,
-				MODULE_DIR, version);
+				module_dir, version);
 		len = strlen(dirname);
 		search = add_search(dirname, len, search);
 	}
diff -Naur module-init-tools-3.16-orig/modinfo.c module-init-tools-3.16/modinfo.c
--- module-init-tools-3.16-orig/modinfo.c	2011-06-02 13:55:01.000000000 -0400
+++ module-init-tools-3.16/modinfo.c	2011-10-01 23:32:15.335093548 -0400
@@ -19,10 +19,6 @@
 #include "zlibsupport.h"
 #include "testing.h"
 
-#ifndef MODULE_DIR
-#define MODULE_DIR "/lib/modules"
-#endif
-
 struct param
 {
 	struct param *next;
@@ -192,6 +188,7 @@
 	unsigned long size;
 	struct utsname buf;
 	char *depname, *p, *moddir;
+	char *module_dir;
 	struct elf_file *module;
 
 	if (strchr(name, '.') || strchr(name, '/')) {
@@ -206,10 +203,14 @@
 		uname(&buf);
 		kernel = buf.release;
 	}
+
+	if((module_dir = getenv("MODULE_DIR")) == NULL)
+		module_dir = "/lib/modules/";
+
 	if (strlen(basedir))
-		nofail_asprintf(&moddir, "%s/%s/%s", basedir, MODULE_DIR, kernel);
+		nofail_asprintf(&moddir, "%s/%s/%s", basedir, module_dir, kernel);
 	else
-		nofail_asprintf(&moddir, "%s/%s", MODULE_DIR, kernel);
+		nofail_asprintf(&moddir, "%s/%s", module_dir, kernel);
 
 	/* Search for it in modules.dep. */
 	nofail_asprintf(&depname, "%s/%s", moddir, "modules.dep");
diff -Naur module-init-tools-3.16-orig/modprobe.c module-init-tools-3.16/modprobe.c
--- module-init-tools-3.16-orig/modprobe.c	2011-06-02 13:55:01.000000000 -0400
+++ module-init-tools-3.16/modprobe.c	2011-10-01 23:34:04.111913368 -0400
@@ -86,10 +86,6 @@
 
 } modprobe_flags_t;
 
-#ifndef MODULE_DIR
-#define MODULE_DIR "/lib/modules"
-#endif
-
 /**
  * print_usage - output the prefered program usage
  *
@@ -2131,6 +2127,7 @@
 	char *cmdline_opts = NULL;
 	char *dirname;
 	errfn_t error = fatal;
+	char *module_dir;
 	int failed = 0;
 	modprobe_flags_t flags = 0;
 	struct modprobe_conf conf = {};
@@ -2233,7 +2230,10 @@
 	if (argc < optind + 1 && !dump_config && !list_only)
 		print_usage(argv[0]);
 
-	nofail_asprintf(&dirname, "%s%s/%s", basedir, MODULE_DIR, buf.release);
+	if((module_dir = getenv("MODULE_DIR")) == NULL)
+		module_dir = "/lib/modules/";
+
+	nofail_asprintf(&dirname, "%s%s/%s", basedir, module_dir, buf.release);
 
 	/* Old-style -t xxx wildcard?  Only with -l. */
 	if (list_only) {