Add PicoSHA2 dependency

CMakeLists.txt

@@ -146,6 +146,8 @@ if(BUILD_FAIRMQ)
   find_package2(PRIVATE ZeroMQ REQUIRED
     VERSION 4.1.4
   )
+  build_bundled(PicoSHA2 extern/PicoSHA2)
+  find_package2(PRIVATE PicoSHA2 REQUIRED)
 endif()
 
 if(BUILD_TESTING)

cmake/FairMQLib.cmake

@@ -498,6 +498,8 @@ function(build_bundled package bundle)
     set(${package}_BUILD_INCLUDE_DIR ${${package}_SOURCE_DIR}/asio/include CACHE PATH "Bundled ${package} build-interface include dir")
     set(${package}_INSTALL_INCLUDE_DIR ${PROJECT_INSTALL_INCDIR}/bundled CACHE PATH "Bundled ${package} install-interface include dir")
     set(${package}_ROOT ${${package}_SOURCE_DIR}/asio)
+  elseif(${package} STREQUAL PicoSHA2)
+    set(${package}_ROOT ${${package}_SOURCE_DIR})
   endif()
 
   string(TOUPPER ${package} package_upper)

cmake/FindPicoSHA2.cmake

@@ -0,0 +1,21 @@
+################################################################################
+#    Copyright (C) 2020 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH    #
+#                                                                              #
+#              This software is distributed under the terms of the             #
+#              GNU Lesser General Public Licence (LGPL) version 3,             #
+#                  copied verbatim in the file "LICENSE"                       #
+################################################################################
+
+find_path(PicoSHA2_INCLUDE_DIR NAMES picosha2.h)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(PicoSHA2
+  REQUIRED_VARS PicoSHA2_INCLUDE_DIR
+)
+
+if(PicoSHA2_FOUND)
+  add_library(PicoSHA2 INTERFACE IMPORTED)
+  set_target_properties(PicoSHA2 PROPERTIES
+    INTERFACE_INCLUDE_DIRECTORIES "${PicoSHA2_INCLUDE_DIR}"
+  )
+endif()

fairmq/CMakeLists.txt

@@ -325,6 +325,7 @@ if(BUILD_FAIRMQ)
 
     PRIVATE # only libFairMQ links against private dependencies
     libzmq
+    PicoSHA2
     ${OFI_DEPS}
   )
   set_target_properties(${_target} PROPERTIES
@@ -377,6 +378,7 @@ if(BUILD_FAIRMQ)
     Boost::boost
     Boost::date_time
     Boost::program_options
+    PicoSHA2
   )
   target_include_directories(fairmq-shmmonitor PUBLIC
     $<BUILD_INTERFACE:${CMAKE_SOURCE_DIR}>