NCCL: fix build on older Linux systems (#12415)

var/spack/repos/builtin/packages/nccl/package.py

@@ -17,12 +17,14 @@ class Nccl(MakefilePackage):
     version('2.4.2-1', sha256='e3dd04b22eb541394bd818e5f78ac23a09cc549690d5d55d6fccc1a36155385a')
     version('2.3.7-1', sha256='e6eff80d9d2db13c61f8452e1400ca2f098d2dfe42857cb23413ce081c5b9e9b')
     version('2.3.5-5', sha256='bac9950b4d3980c25baa8e3e4541d2dfb4d21edf32ad3b89022d04920357142f')
-    version('2.2',     '5b9ce7fbdce0fde68e0f66318e6ff422')
     version('1.3.4-1', '5b9ce7fbdce0fde68e0f66318e6ff422')
     version('1.3.0-1', 'f6fb1d56913a7d212ca0c300e76f01fb')
 
     depends_on('cuda')
 
+    # https://github.com/NVIDIA/nccl/issues/244
+    patch('so_reuseport.patch', when='@2.3.7-1:2.4.8-1')
+
     @property
     def build_targets(self):
         return ['CUDA_HOME={0}'.format(self.spec['cuda'].prefix)]

var/spack/repos/builtin/packages/nccl/so_reuseport.patch

@@ -0,0 +1,16 @@
+diff --git a/src/include/socket.h b/src/include/socket.h
+index 68ce235..b4f09b9 100644
+--- a/src/include/socket.h
++++ b/src/include/socket.h
+@@ -327,7 +327,11 @@ static ncclResult_t createListenSocket(int *fd, union socketAddress *localAddr)
+   if (socketToPort(&localAddr->sa)) {
+     // Port is forced by env. Make sure we get the port.
+     int opt = 1;
++#if defined(SO_REUSEPORT)
+     SYSCHECK(setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt)), "setsockopt");
++#else
++    SYSCHECK(setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)), "setsockopt");
++#endif
+   }
+ 
+   // localAddr port should be 0 (Any port)