debug/release
1、CMakeLists.txt中新增如下兩行
set(CMAKE_CXX_FLAGS_DEBUG “$ENV{CXXFLAGS} -O0 -Wall -g -ggdb”)
set(CMAKE_CXX_FLAGS_RELEASE “$ENV{CXXFLAGS} -O3 -Wall”)
2、生成Makefile的時候這樣做
“ cmake -DCMAKE_BUILD_TYPE=Debug ..”或者“cmake -DCMAKE_BUILD_TYPE=Release ..”

編譯時顯示gcc/g++資訊
set(CMAKE_VERBOSE_MAKEFILE ON)

動靜態庫的問題

• 編譯
  只要連結的是靜態庫，那麼引用的庫就會被編譯進target

• 同時編譯動靜態庫
  aux_source_directory(. SRCS)
  add_library(hello SHARED ${SRCS})
  add_library(hello_static STATIC ${SRCS})
  set_target_properties(hello_static PROPERTIES OUTPUT_NAME “hello”)
  set_target_properties(hello PROPERTIES CLEAN_DIRECT_OUTPUT 1)
  set_target_properties(hello_static PROPERTIES CLEAN_DIRECT_OUTPUT 1)

• target引用其他target
  cmake_minimum_required(VERSION 3.6)
  project(cmake_static_library_test)
  set(CMAKE_CXX_FLAGS “${CMAKE_CXX_FLAGS} -std=c++11”)
  include_directories(./hello)
  link_directories(${CMAKE_BINARY_DIR}/hello)
  add_subdirectory(hello)
  set(SOURCE_FILES main.cpp)
  add_executable(cmake_static_library_test $

  {SOURCE_FILES})
  add_dependencies(cmake_static_library_test hello_static)
  target_link_libraries(cmake_static_library_test libhello.a)