diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5e2a2b4a32f1..b9f2ddc36cad 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,16 +37,21 @@ option(SOLC_STATIC_STDLIBS "Link solc against static versions of libgcc and libs
 option(STRICT_Z3_VERSION "Use the latest version of Z3" ON)
 option(PEDANTIC "Enable extra warnings and pedantic build flags. Treat all warnings as errors." ON)
 option(PROFILE_OPTIMIZER_STEPS "Output performance metrics for the optimiser steps." OFF)
+option(USE_SYSTEM_LIBRARIES "Use system libraries" OFF)
+option(ONLY_BUILD_SOLIDITY_LIBRARIES "Only build solidity libraries" OFF)
+option(STRICT_JSONCPP_VERSION "Strictly check installed jsoncpp version" ON)
 
 # Setup cccache.
 include(EthCcache)
 
 # Let's find our dependencies
 include(EthDependencies)
-include(fmtlib)
-include(jsoncpp)
-include(range-v3)
-include_directories(SYSTEM ${JSONCPP_INCLUDE_DIR})
+if (NOT USE_SYSTEM_LIBRARIES)
+  include(fmtlib)
+  include(jsoncpp)
+  include(range-v3)
+  include_directories(SYSTEM ${JSONCPP_INCLUDE_DIR})
+endif()
 
 find_package(Threads)
 
@@ -58,6 +63,10 @@ if (PROFILE_OPTIMIZER_STEPS)
     add_definitions(-DPROFILE_OPTIMIZER_STEPS)
 endif()
 
+if (STRICT_JSONCPP_VERSION)
+	add_definitions(-DSTRICT_JSONCPP_VERSION_CHECK)
+endif()
+
 # Figure out what compiler and system are we using
 include(EthCompilerSettings)
 
@@ -141,12 +150,16 @@ add_subdirectory(libyul)
 add_subdirectory(libsolidity)
 add_subdirectory(libsolc)
 add_subdirectory(libstdlib)
-add_subdirectory(tools)
 
-if (NOT EMSCRIPTEN)
-	add_subdirectory(solc)
-endif()
+if (NOT ONLY_BUILD_SOLIDITY_LIBRARIES)
+	add_subdirectory(tools)
 
-if (TESTS AND NOT EMSCRIPTEN)
-	add_subdirectory(test)
+	if (NOT EMSCRIPTEN)
+		add_subdirectory(solc)
+	endif()
+
+	if (TESTS AND NOT EMSCRIPTEN)
+		add_subdirectory(test)
+	endif()
 endif()
+
diff --git a/libsolutil/JSON.cpp b/libsolutil/JSON.cpp
index ea75ada0f79f..3a2570d47ec1 100644
--- a/libsolutil/JSON.cpp
+++ b/libsolutil/JSON.cpp
@@ -30,10 +30,12 @@
 #include <map>
 #include <memory>
 
+#ifdef STRICT_JSONCPP_VERSION_CHECK
 static_assert(
 	(JSONCPP_VERSION_MAJOR == 1) && (JSONCPP_VERSION_MINOR == 9) && (JSONCPP_VERSION_PATCH == 3),
 	"Unexpected jsoncpp version: " JSONCPP_VERSION_STRING ". Expecting 1.9.3."
 );
+#endif
 
 namespace solidity::util
 {
diff --git a/libstdlib/CMakeLists.txt b/libstdlib/CMakeLists.txt
index 65a3a1cda16b..b6b22832d6e6 100644
--- a/libstdlib/CMakeLists.txt
+++ b/libstdlib/CMakeLists.txt
@@ -1,18 +1,18 @@
 # This will re-generate the headers if any file within src was modified.
-set_directory_properties(PROPERTY CMAKE_CONFIGURE_DEPENDS ${PROJECT_SOURCE_DIR}/stdlib/src/)
+set_directory_properties(PROPERTY CMAKE_CONFIGURE_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/src/)
 
 set(STDLIB stub)
 set(GENERATED_STDLIB_HEADERS)
 foreach(src IN LISTS STDLIB)
-    set(STDLIB_FILE ${PROJECT_SOURCE_DIR}/libstdlib/src/${src}.sol)
+    set(STDLIB_FILE ${CMAKE_CURRENT_SOURCE_DIR}/src/${src}.sol)
     file(READ ${STDLIB_FILE} STDLIB_FILE_CONTENT HEX)
     string(REGEX MATCHALL ".." STDLIB_FILE_CONTENT "${STDLIB_FILE_CONTENT}")
     list(REMOVE_ITEM STDLIB_FILE_CONTENT "0d")
     string(REGEX REPLACE ";" ",\n\t0x" STDLIB_FILE_CONTENT "${STDLIB_FILE_CONTENT}")
     set(STDLIB_FILE_CONTENT "0x${STDLIB_FILE_CONTENT}")
     set(STDLIB_FILE_NAME ${src})
-    configure_file("${PROJECT_SOURCE_DIR}/libstdlib/stdlib.src.h.in" ${PROJECT_BINARY_DIR}/include/libstdlib/${src}.h NEWLINE_STYLE LF @ONLY)
+    configure_file("${CMAKE_CURRENT_SOURCE_DIR}/stdlib.src.h.in" ${PROJECT_BINARY_DIR}/include/libstdlib/${src}.h NEWLINE_STYLE LF @ONLY)
     list(APPEND GENERATED_STDLIB_HEADERS ${PROJECT_BINARY_DIR}/include/libstdlib/${src}.h)
 endforeach()
 
-configure_file("${PROJECT_SOURCE_DIR}/libstdlib/stdlib.h.in" ${PROJECT_BINARY_DIR}/include/libstdlib/stdlib.h NEWLINE_STYLE LF @ONLY)
+configure_file("${CMAKE_CURRENT_SOURCE_DIR}/stdlib.h.in" ${PROJECT_BINARY_DIR}/include/libstdlib/stdlib.h NEWLINE_STYLE LF @ONLY)