Add Random123 as a submodule and remove files

Author: Nicolas Cornu

.gitmodules

@@ -4,3 +4,6 @@
 [submodule "external/nmodl"]
   path = external/nmodl
   url = https://github.com/BlueBrain/nmodl
+[submodule "external/Random123"]
+	path = external/Random123
+	url = https://github.com/BlueBrain/Random123.git

CMake/AddRandom123Submodule.cmake

@@ -0,0 +1,23 @@
+# =============================================================================
+# Copyright (C) 2020 Blue Brain Project
+#
+# See top-level LICENSE file for details.
+# =============================================================================
+
+
+include(FindPackageHandleStandardArgs)
+find_package(FindPkgConfig QUIET)
+find_path(Random123_PROJ NAMES LICENSE PATHS "${CORENEURON_PROJECT_SOURCE_DIR}/external/Random123")
+find_package_handle_standard_args(Random123 REQUIRED_VARS Random123_PROJ)
+
+if(NOT Random123_FOUND)
+  find_package(Git 1.8.3 QUIET)
+  if(NOT ${GIT_FOUND})
+    message(FATAL_ERROR "git not found, clone repository with --recursive")
+  endif()
+  message(STATUS "Sub-module Random123 missing: running git submodule update --init --recursive")
+  execute_process(COMMAND ${GIT_EXECUTABLE} submodule update --init --recursive --
+                          ${CORENEURON_PROJECT_SOURCE_DIR}/external/Random123
+                  WORKING_DIRECTORY ${CORENEURON_PROJECT_SOURCE_DIR})
+endif()
+

CMakeLists.txt

@@ -46,6 +46,7 @@ include(ReleaseDebugAutoFlags)
 include(CrayPortability)
 include(SetRpath)
 include(CTest)
+include(AddRandom123Submodule)
 
 # =============================================================================
 # Build options

coreneuron/CMakeLists.txt

@@ -173,6 +173,8 @@ target_link_libraries(coreneuron
                       ${CALIPER_LIB}
                       ${CALIPER_MPI_LIB}
                       ${likwid_LIBRARIES})
+target_include_directories(coreneuron SYSTEM PRIVATE
+        ${CORENEURON_PROJECT_SOURCE_DIR}/external/Random123/include)
 
 target_link_libraries(corenrnmech scopmath coreneuron)