Define namespace prefixed alias for cpuinfo in the CMake build (#89)

This allows projects that depend on cpuinfo to use namespace qualified
target name regardless of whether they consume cpuinfo through
add_subdirectory or find_package.

Author: petrhosek

CMakeLists.txt

@@ -264,6 +264,8 @@ ENDIF()
 TARGET_LINK_LIBRARIES(cpuinfo PRIVATE clog)
 TARGET_LINK_LIBRARIES(cpuinfo_internals PRIVATE clog)
 
+ADD_LIBRARY(${PROJECT_NAME}::cpuinfo ALIAS cpuinfo)
+
 # support find_package(cpuinfo CONFIG)
 INCLUDE(CMakePackageConfigHelpers)
 GET_FILENAME_COMPONENT(CONFIG_FILE_PATH ${CMAKE_CURRENT_BINARY_DIR}/cpuinfo-config.cmake ABSOLUTE)

deps/clog/CMakeLists.txt

@@ -67,6 +67,8 @@ IF(ANDROID AND NOT CLOG_LOG_TO_STDIO)
   TARGET_LINK_LIBRARIES(clog PRIVATE log)
 ENDIF()
 
+ADD_LIBRARY(cpuinfo::clog ALIAS clog)
+
 INSTALL(TARGETS clog
   EXPORT cpuinfo-targets
   LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"