fix(build): add ROCKSDB_SCHED_GETCPU_PRESENT for Linux build config (#950)

* fix(build): add ROCKSDB_SCHED_GETCPU_PRESENT for Linux build config

This change adds a definition for ROCKSDB_SCHED_GETCPU_PRESENT in the Linux-specific section of the build script. This ensures that the RocksDB library is aware of the presence of the sched_getcpu function on Linux systems, potentially optimising CPU scheduling.

Author: popcnt1

librocksdb-sys/build.rs

@@ -176,6 +176,7 @@ fn build_rocksdb() {
         config.define("OS_LINUX", None);
         config.define("ROCKSDB_PLATFORM_POSIX", None);
         config.define("ROCKSDB_LIB_IO_POSIX", None);
+        config.define("ROCKSDB_SCHED_GETCPU_PRESENT", None);
     } else if target.contains("dragonfly") {
         config.define("OS_DRAGONFLYBSD", None);
         config.define("ROCKSDB_PLATFORM_POSIX", None);