initial commit

cmake/libraries/libevent.cmake

@@ -0,0 +1,49 @@
+if(PROJECT_ENABLE_LIBEVENT)
+  if(PROJECT_BUILD)
+    add_definitions(-DPROJECT_ENABLE_LIBEVENT)
+
+    if(PROJECT_IS_MINGW AND NOT PROJECT_IS_MINGW_UNIX)
+      pkg_check_modules(LIBEVENT REQUIRED libevent>=${LIBEVENT_VERSION})
+    else()
+      set(LIBEVENT_STATIC_LINK ${PROJECT_STATIC_LINK})
+      find_package(Libevent ${LIBEVENT_VERSION} REQUIRED)
+    endif()
+
+    include_directories(BEFORE SYSTEM ${LIBEVENT_INCLUDE_DIRS})
+    if (PROJECT_IS_MINGW_UNIX)
+      unset(LIBEVENT_LIBRARIES)
+      set(LIBEVENT_LIBRARIES 
+        /mingw64/lib/libevent.dll.a
+        /mingw64/lib/libevent_core.dll.a
+        /mingw64/lib/libevent_extra.dll.a
+      )
+    endif()
+    link_libraries(${LIBEVENT_LIBRARIES})
+  elseif(NOT PROJECT_IS_MINGW)
+    if(PROJECT_BUILD_SHARED_LIBS)
+      set(LIBEVENT_LIBRARY_TYPE BOTH)
+    else()
+      set(LIBEVENT_LIBRARY_TYPE STATIC)
+    endif()
+
+    ExternalProject_Add(libevent_project
+      PREFIX external
+      URL ${PROJECT_3RD_PARTY_DIR}/libevent-${LIBEVENT_VERSION}-stable.tar.gz
+      URL_HASH SHA256=${LIBEVENT_HASH}
+      LIST_SEPARATOR |
+      PATCH_COMMAND ${PROJECT_3RD_PARTY_DIR}/libevent_patch.sh 
+        ${PROJECT_3RD_PARTY_DIR}
+        ${CMAKE_BINARY_DIR}/external/src/libevent_project
+      CMAKE_ARGS ${PROJECT_EXTERNAL_CMAKE_FLAGS}
+        -DBUILD_SHARED_LIBS=${PROJECT_BUILD_SHARED_LIBS}
+        -DBUILD_STATIC_LIBS=ON
+        -DCMAKE_OSX_ARCHITECTURES=${CMAKE_OSX_ARCHITECTURES}
+        -DEVENT__DISABLE_OPENSSL=ON
+        -DEVENT__DISABLE_SAMPLES=ON
+        -DEVENT__DISABLE_TESTS=ON
+        -DEVENT__LIBRARY_TYPE=${LIBEVENT_LIBRARY_TYPE}
+    )
+
+    list(APPEND PROJECT_DEPENDENCIES libevent_project)
+  endif()
+endif()