update source to Ceph Pacific 16.2.2

[ceph.git] / ceph / src / jaegertracing / jaeger-client-cpp / cmake / Findnlohmann_json.cmake

diff --git a/ceph/src/jaegertracing/jaeger-client-cpp/cmake/Findnlohmann_json.cmake b/ceph/src/jaegertracing/jaeger-client-cpp/cmake/Findnlohmann_json.cmake
new file mode 100644 (file)
index 0000000..c5fc8b0
--- /dev/null
+++ b/ceph/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()