Add msgpack-cxx (#53)

Progress on #51.

Author: marbre

math-libs/CMakeLists.txt

@@ -58,6 +58,7 @@ therock_cmake_subproject_declare(hipBLASLt
     amd-hip
   BUILD_DEPS
     hipBLAS-common
+    therock-msgpack-cxx
   RUNTIME_DEPS
     hip-clr
 )

third-party/CMakeLists.txt

@@ -1,6 +1,7 @@
 # No-dep third party libraries (alphabetical)
 add_subdirectory(boost)
 add_subdirectory(eigen)
+add_subdirectory(msgpack-cxx)
 add_subdirectory(nlohmann-json)
 add_subdirectory(FunctionalPlus)
 

third-party/msgpack-cxx/CMakeLists.txt

@@ -0,0 +1,16 @@
+therock_subproject_fetch(therock-msgpack-cxx-sources
+  CMAKE_PROJECT
+  URL https://github.com/msgpack/msgpack-c/releases/download/cpp-7.0.0/msgpack-cxx-7.0.0.tar.gz
+  URL_HASH SHA256=7504b7af7e7b9002ce529d4f941e1b7fb1fb435768780ce7da4abaac79bb156f
+)
+
+therock_cmake_subproject_declare(therock-msgpack-cxx
+  BACKGROUND_BUILD
+  EXCLUDE_FROM_ALL
+  EXTERNAL_SOURCE_DIR "${CMAKE_CURRENT_BINARY_DIR}/source"
+  CMAKE_ARGS
+    -DMSGPACK_USE_BOOST=OFF
+)
+therock_cmake_subproject_provide_package(
+  therock-msgpack-cxx msgpack-cxx lib/cmake/msgpack-cxx)
+therock_cmake_subproject_activate(therock-msgpack-cxx)