Pass ZSTD to ifopsh build

cmake/CMakeLists.txt

@@ -349,6 +349,9 @@ if (WITH_ROCKSDB)
     set(SWIG_DEFINES ${SWIG_DEFINES} -DIFOPSH_WITH_ROCKSDB)
 
     if (WITH_ZSTD)
+        # @todo do we actually need the zstd include dir or rather just pass
+        # the libzstd.a along with the rocksdb library when needed and feature
+        # detect based on rocksdb API?
         if("${ZSTD_INCLUDE_DIR}" STREQUAL "")
             find_path(ZSTD_INCLUDE_DIR zstd.h
                 PATHS

nix/build-all.py

@@ -1139,6 +1139,9 @@ if "rocksdb" in targets:
             f"-DWITH_ROCKSDB=On",
             f"-DROCKSDB_INCLUDE_DIR={DEPS_DIR}/install/rocksdb-{ROCKSDB_VERSION}/include",
             f"-DROCKSDB_LIBRARY_DIR={DEPS_DIR}/install/rocksdb-{ROCKSDB_VERSION}/lib",
+            f"-DWITH_ZSTD=On",
+            f"-DZSTD_INCLUDE_DIR={DEPS_DIR}/install/zstd-{ZSTD_VERSION}/include",
+            f"-DZSTD_LIBRARY_DIR={DEPS_DIR}/install/zstd-{ZSTD_VERSION}/lib",
         ]
     )