rocksdb: fix FTBFS on gcc 13

This applies two patches to the embedded rocksdb source:
- facebook/rocksdb#11118
- facebook/rocksdb#11137

Fixes: https://tracker.ceph.com/issues/58477
Signed-off-by: Tim Serong <tserong@suse.com>

cmake/modules/BuildRocksDB.cmake

@@ -1,3 +1,6 @@
+# CMAKE_CURRENT_FUNCTION_LIST_DIR is introduced by cmake 3.17, but ubuntu comes with 3.16
+set(_build_rocksdb_list_dir "${CMAKE_CURRENT_LIST_DIR}")
+
 function(build_rocksdb)
   set(rocksdb_CMAKE_ARGS -DCMAKE_POSITION_INDEPENDENT_CODE=ON)
   list(APPEND rocksdb_CMAKE_ARGS -DWITH_GFLAGS=OFF)
@@ -75,10 +78,12 @@ function(build_rocksdb)
     set(make_cmd ${CMAKE_COMMAND} --build <BINARY_DIR> --target rocksdb)
   endif()
 
+  find_program(PATCH_EXECUTABLE patch)
   ExternalProject_Add(rocksdb_ext
     SOURCE_DIR "${rocksdb_SOURCE_DIR}"
     CMAKE_ARGS ${rocksdb_CMAKE_ARGS}
     BINARY_DIR "${rocksdb_BINARY_DIR}"
+    PATCH_COMMAND ${PATCH_EXECUTABLE} -p1 -i ${_build_rocksdb_list_dir}/rocksdb-gcc-13.patch
     BUILD_COMMAND "${make_cmd}"
     BUILD_BYPRODUCTS "${rocksdb_LIBRARY}"
     INSTALL_COMMAND ""

cmake/modules/rocksdb-gcc-13.patch

@@ -0,0 +1,66 @@
+From fe4d03d15e662a195bf28cb1327fbaeb563efb13 Mon Sep 17 00:00:00 2001
+From: Heiko Becker <heirecka@exherbo.org>
+Date: Tue, 24 Jan 2023 16:23:03 +0100
+Subject: [PATCH] Fix build with gcc 13 by including <cstdint>
+
+Like other versions before, gcc 13 moved some includes around and as a
+result <cstdint> is no longer transitively included [1]. Explicitly include
+it for uint{32,64}_t.
+
+[1] https://gcc.gnu.org/gcc-13/porting_to.html#header-dep-changes
+---
+ table/block_based/data_block_hash_index.h | 1 +
+ util/string_util.h                        | 1 +
+ 2 files changed, 2 insertions(+)
+
+diff --git a/table/block_based/data_block_hash_index.h b/table/block_based/data_block_hash_index.h
+index f356395f329..3215221755d 100644
+--- a/table/block_based/data_block_hash_index.h
++++ b/table/block_based/data_block_hash_index.h
+@@ -5,6 +5,7 @@
+
+ #pragma once
+
++#include <cstdint>
+ #include <string>
+ #include <vector>
+
+diff --git a/util/string_util.h b/util/string_util.h
+index 55d106fff02..11178fd1d7b 100644
+--- a/util/string_util.h
++++ b/util/string_util.h
+@@ -6,6 +6,7 @@
+
+ #pragma once
+
++#include <cstdint>
+ #include <sstream>
+ #include <string>
+ #include <unordered_map>
+From 31012cdfa435d9203da3c3de8127b66bf018692a Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Tue, 24 Jan 2023 21:40:43 -0800
+Subject: [PATCH] checkpoint.h: Add missing includes <cstdint>
+
+It uses uint64_t and it comes from <cstdint>
+This is needed with GCC 13 and newer [1]
+
+[1] https://www.gnu.org/software/gcc/gcc-13/porting_to.html
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ include/rocksdb/utilities/checkpoint.h | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/include/rocksdb/utilities/checkpoint.h b/include/rocksdb/utilities/checkpoint.h
+index 6046513aba4..ecf92061629 100644
+--- a/include/rocksdb/utilities/checkpoint.h
++++ b/include/rocksdb/utilities/checkpoint.h
+@@ -8,6 +8,7 @@
+ #pragma once
+ #ifndef ROCKSDB_LITE
+
++#include <cstdint>
+ #include <string>
+ #include <vector>
+