--- squashfs-tools/mksquashfs.c
+++ squashfs-tools/mksquashfs.c
@@ -4859,15 +4859,37 @@
 	return parse_number(arg, res, 0);
 }
 
+#if defined(__UCLIBC__)
+static long int get_proc_meminfo_value(const char *format) {
+	char buffer[8192];
+	long int value = -1;
 
+	FILE *meminfo = fopen ("/proc/meminfo", "r");
+	if (meminfo != NULL) {
+		while (fgets(buffer, sizeof(buffer), meminfo) != NULL) {
+			if (sscanf(buffer, format, &value) == 1) {
+				break;
+			}
+		}
+		fclose(meminfo);
+	}
+
+	return value;
+}
+#endif
 int get_physical_memory()
 {
 	/* Long longs are used here because with PAE, a 32-bit
 	  machine can have more than 4GB of physical memory */
 
+#if defined(__UCLIBC__)
+	/* UCLIBC doesn't implement sysconf(_SC_PHYS_PAGES) */
+	int phys_mem = get_proc_meminfo_value("MemTotal: %ld kB") >> 10;
+#else
 	long long num_pages = sysconf(_SC_PHYS_PAGES);
 	long long page_size = sysconf(_SC_PAGESIZE);
 	int phys_mem = num_pages * page_size >> 20;
+#endif
 
 	if(phys_mem < SQUASHFS_LOWMEM)
 		BAD_ERROR("Mksquashfs requires more physical memory than is "