Problem: Invalid 32bit issues when using Conan

Solution: Remove architechture checks from cmake version file

Since this is a header only library there is no need to check for 32 vs 64bits.

See similar problem: doctest/doctest#225

Author: gummif

CMakeLists.txt

@@ -73,9 +73,14 @@ export(EXPORT ${PROJECT_NAME}-targets
 configure_package_config_file(${PROJECT_NAME}Config.cmake.in
                               "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
                               INSTALL_DESTINATION ${CPPZMQ_CMAKECONFIG_INSTALL_DIR})
+# workaround until ARCH_INDEPENDENT flag can be used with cmake 3.14
+set(CPPZMQ_SIZEOF_VOID_P ${CMAKE_SIZEOF_VOID_P})
+unset(CMAKE_SIZEOF_VOID_P)
 write_basic_package_version_file(${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
                                  VERSION ${CPPZMQ_VERSION}
                                  COMPATIBILITY AnyNewerVersion)
+set(CMAKE_SIZEOF_VOID_P ${CPPZMQ_SIZEOF_VOID_P})
+
 install(EXPORT ${PROJECT_NAME}-targets
         FILE ${PROJECT_NAME}Targets.cmake
         DESTINATION ${CPPZMQ_CMAKECONFIG_INSTALL_DIR})