Static link rocksdb into Nimbus.

Makefile

@@ -113,6 +113,7 @@ VERIF_PROXY_OUT_PATH ?= build/libverifproxy/
 	libnimbus.so \
 	libnimbus.a \
 	libbacktrace \
+	rocksdb \
 	dist-amd64 \
 	dist-arm64 \
 	dist-arm \
@@ -178,6 +179,8 @@ ifneq ($(USE_LIBBACKTRACE), 0)
 deps: | libbacktrace
 endif
 
+deps: | rocksdb
+
 ifneq ($(USE_MIRACL), 0)
   NIM_PARAMS += -d:BLS_FORCE_BACKEND=miracl
 endif
@@ -231,6 +234,10 @@ nimbus.nims:
 libbacktrace:
 	+ $(MAKE) -C vendor/nim-libbacktrace --no-print-directory BUILD_CXX_LIB=0
 
+# nim-rocksdb
+rocksdb:
+	+ vendor/nim-rocksdb/scripts/build_static_deps.sh
+
 # builds and runs the nimbus test suite
 test: | build deps
 	$(ENV_SCRIPT) nim test_rocksdb $(NIM_PARAMS) nimbus.nims

config.nims

@@ -159,3 +159,15 @@ if defined(windows) and defined(i386):
 # nim-kzg shipping their own blst, nimbus-eth1 too.
 # disable nim-kzg's blst
 switch("define", "kzgExternalBlst")
+
+# nim-rocksdb static linking
+import std/os
+
+const libsDir = currentSourcePath.parentDir() & "/vendor/nim-rocksdb/build/lib"
+switch("define", "rocksdb_static_linking")
+switch("gcc.linkerexe", "g++") # use the C++ linker profile because it's a C++ library
+switch("dynlibOverride", "libz.a")
+switch("dynlibOverride", "librocksdb.a")
+switch("l", libsDir & "/librocksdb.a")
+switch("l", libsDir & "/libz.a")
+#switch("passL", "-s") # to reduce the binary size if needed