1diff -urEb openssl-1.1.1k.orig/crypto/rand/rand_unix.c openssl-1.1.1k/crypto/rand/rand_unix.c
2--- openssl-1.1.1k.orig/crypto/rand/rand_unix.c	2021-04-21 11:33:05.241258372 +0200
3+++ openssl-1.1.1k/crypto/rand/rand_unix.c	2021-04-21 11:34:48.705287133 +0200
4@@ -455,6 +455,7 @@
5              * system call and this should always succeed which renders
6              * this alternative but essentially identical source moot.
7              */
8+#if !defined(__LSB_VERSION__)  // "syscall()" is not available in LSB
9             if (uname(&un) == 0) {
10                 kernel[0] = atoi(un.release);
11                 p = strchr(un.release, '.');
12@@ -465,6 +466,7 @@
13                     return 0;
14                 }
15             }
16+#endif
17             /* Open /dev/random and wait for it to be readable */
18             if ((fd = open(DEVRANDOM_WAIT, O_RDONLY)) != -1) {
19                 if (DEVRANDM_WAIT_USE_SELECT && fd < FD_SETSIZE) {
20