Merge pull request #3849 from ferdnyc/zeromq-config-install

Install CMake config to LIBDIR by default, to correctly support multiarch

CMakeLists.txt

@@ -1513,8 +1513,9 @@ endif()
 if(WIN32)
   set(ZEROMQ_CMAKECONFIG_INSTALL_DIR "CMake" CACHE STRING "install path for ZeroMQConfig.cmake")
 else()
-  # GNUInstallDirs "DATADIR" wrong here; CMake search path wants "share".
-  set(ZEROMQ_CMAKECONFIG_INSTALL_DIR "share/cmake/${PROJECT_NAME}" CACHE STRING "install path for ZeroMQConfig.cmake")
+  # CMake search path wants either "share" (AKA GNUInstallDirs DATAROOTDIR)
+  # for arch-independent, or LIBDIR for arch-dependent, plus "cmake" as prefix
+  set(ZEROMQ_CMAKECONFIG_INSTALL_DIR "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}" CACHE STRING "install path for ZeroMQConfig.cmake")
 endif()
 
 if((NOT CMAKE_VERSION VERSION_LESS 3.0) AND (BUILD_SHARED OR BUILD_STATIC))

RELICENSE/ferdnyc.md

+# Permission to Relicense under MPLv2 or any other OSI approved license chosen by the current ZeroMQ BDFL
+
+This is a statement by Frank R. Dana Jr.
+that grants permission to relicense its copyrights in the libzmq C++
+library (ZeroMQ) under the Mozilla Public License v2 (MPLv2) or any other 
+Open Source Initiative approved license chosen by the current ZeroMQ 
+BDFL (Benevolent Dictator for Life).
+
+A portion of the commits made by the Github handle "ferdnyc", with
+commit author "FeRD (Frank Dana)", are copyright of Frank R. Dana, Jr.
+This document hereby grants the libzmq project team to relicense libzmq, 
+including all past, present and future contributions of the author listed above.
+
+Frank Richard Dana, Jr.
+2020-03-16