1 files changed, 55 insertions, 0 deletions
diff --git a/src/jaegertracing/jaeger-client-cpp/cmake/Findnlohmann_json.cmake b/src/jaegertracing/jaeger-client-cpp/cmake/Findnlohmann_json.cmake
new file mode 100644
index 000000000..c5fc8b048
--- /dev/null
+++ b/src/jaegertracing/jaeger-client-cpp/cmake/Findnlohmann_json.cmake
@@ -0,0 +1,55 @@
+# - Try to find nlohmann_json
+#
+# The following variables are optionally searched for defaults
+#  nlohmann_json_ROOT_DIR:            Base directory where all GLOG components are found
+#
+# The following are set after configuration is done: 
+#  nlohmann_json_FOUND
+#  nlohmann_json_INCLUDE_DIRS
+#  nlohmann_json_LIBRARIES
+
+include(FindPackageHandleStandardArgs)
+
+# only look in default directories
+set(nlohmann_json_INCLUDE_NAME "nlohmann/json.hpp")
+
+find_path(nlohmann_json_INCLUDE_DIR
+    NAMES
+        nlohmann/json.hpp
+    PATHS /usr/local/include
+          /usr/include)
+
+if (NOT nlohmann_json_INCLUDE_DIR)
+	set(nlohmann_json_INCLUDE_NAME "json.hpp")
+	find_path(
+		nlohmann_json_INCLUDE_DIR
+		NAMES "${nlohmann_json_INCLUDE_NAME}"
+	)
+endif()
+
+
+# Version detection. Unfortunately the header doesn't expose a proper version
+# define.
+if (nlohmann_json_INCLUDE_DIR AND nlohmann_json_INCLUDE_NAME)
+	file(READ "${nlohmann_json_INCLUDE_DIR}/${nlohmann_json_INCLUDE_NAME}" NL_HDR_TXT LIMIT 1000)
+	if (NL_HDR_TXT MATCHES "version ([0-9]+\.[0-9]+\.[0-9]+)")
+		set(nlohmann_json_VERSION "${CMAKE_MATCH_1}")
+	endif()
+endif()
+
+set(nlohmann_json_VERSION "${nlohmann_json_VERSION}" CACHE STRING "nlohmann header version")
+
+# handle the QUIETLY and REQUIRED arguments and set nlohmann_json_FOUND to TRUE
+# if all listed variables are TRUE, hide their existence from configuration view
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(
+	nlohmann_json
+	REQUIRED_VARS nlohmann_json_INCLUDE_DIR nlohmann_json_INCLUDE_NAME
+	VERSION_VAR nlohmann_json_VERSION)
+
+if(nlohmann_json_FOUND AND NOT (TARGET nlohmann_json))
+  add_library(nlohmann_json SHARED IMPORTED)
+  set_target_properties(nlohmann_json PROPERTIES
+      INTERFACE_INCLUDE_DIRECTORIES "${nlohmann_json_INCLUDE_DIR}"
+  )
+endif()