Static gcc (#228)

### What problem were solved in this pull request?

Issue Number: close #222 

Problem:
gcc使用动态链接库，在复制observer到其它机器后，无法启动。

### What is changed and how it works?
使用gcc静态链接库

CMakeLists.txt

@@ -36,20 +36,20 @@ ENDIF(WIN32)
 # This is for clangd plugin for vscode
 SET(CMAKE_COMMON_FLAGS "${CMAKE_COMMON_FLAGS} -Wall -Werror")
 IF(DEBUG)
-    MESSAGE("DEBUG has been set as TRUE ${DEBUG}")
+    MESSAGE(STATUS "DEBUG has been set as TRUE ${DEBUG}")
     SET(CMAKE_COMMON_FLAGS "${CMAKE_COMMON_FLAGS}  -O0 -g -DDEBUG ")
     ADD_DEFINITIONS(-DENABLE_DEBUG)
 ELSEIF(NOT DEFINED ENV{DEBUG})
-    MESSAGE("Disable debug")
+    MESSAGE(STATUS "Disable debug")
     SET(CMAKE_COMMON_FLAGS "${CMAKE_COMMON_FLAGS}  -O2 -g ")
 ELSE()
-    MESSAGE("Enable debug")
+    MESSAGE(STATUS "Enable debug")
     SET(CMAKE_COMMON_FLAGS "${CMAKE_COMMON_FLAGS}  -O0 -g -DDEBUG")
     ADD_DEFINITIONS(-DENABLE_DEBUG)
 ENDIF(DEBUG)
 
 IF (CONCURRENCY)
-    MESSAGE("CONCURRENCY is ON")
+    MESSAGE(STATUS "CONCURRENCY is ON")
     SET(CMAKE_COMMON_FLAGS "${CMAKE_COMMON_FLAGS} -DCONCURRENCY")
     ADD_DEFINITIONS(-DCONCURRENCY)
 ENDIF (CONCURRENCY)
@@ -57,22 +57,29 @@ ENDIF (CONCURRENCY)
 SET(CMAKE_COMMON_FLAGS "${CMAKE_COMMON_FLAGS} -fprofile-arcs -ftest-coverage")
 SET(CMAKE_CXX_FLAGS ${CMAKE_COMMON_FLAGS})
 SET(CMAKE_C_FLAGS ${CMAKE_COMMON_FLAGS})
-MESSAGE("CMAKE_CXX_FLAGS is " ${CMAKE_CXX_FLAGS})
+MESSAGE(STATUS "CMAKE_CXX_FLAGS is " ${CMAKE_CXX_FLAGS})
+
+MESSAGE(STATUS "CMAKE_CXX_COMPILER_ID is " ${CMAKE_CXX_COMPILER_ID})
+IF ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
+  ADD_LINK_OPTIONS(-static-libgcc -static-libstdc++)
+ENDIF()
 
 IF (ENABLE_ASAN)
     SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-omit-frame-pointer -fsanitize=address")
     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-omit-frame-pointer -fsanitize=address")
-    SET(CMAKE_LINKER_FLAGS_DEBUG  "${CMAKE_LINKER_FLAGS_DEBUG} -fno-omit-frame-pointer -fsanitize=address")
+    IF ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
+      ADD_LINK_OPTIONS(-static-libasan)
+    ENDIF()
 ENDIF()
 
 IF (CMAKE_INSTALL_PREFIX)
-    MESSAGE("CMAKE_INSTALL_PREFIX has been set as " ${CMAKE_INSTALL_PREFIX} )
+    MESSAGE(STATUS "CMAKE_INSTALL_PREFIX has been set as " ${CMAKE_INSTALL_PREFIX} )
 ELSEIF(DEFINED ENV{CMAKE_INSTALL_PREFIX})
     SET(CMAKE_INSTALL_PREFIX $ENV{CMAKE_INSTALL_PREFIX})
 ELSE()
     SET(CMAKE_INSTALL_PREFIX /tmp/${PROJECT_NAME})
 ENDIF()
-MESSAGE("Install target dir is " ${CMAKE_INSTALL_PREFIX})
+MESSAGE(STATUS "Install target dir is " ${CMAKE_INSTALL_PREFIX})
 
 IF (DEFINED ENV{LD_LIBRARY_PATH})
     SET(LD_LIBRARY_PATH_STR $ENV{LD_LIBRARY_PATH})

build.sh

@@ -5,7 +5,7 @@ TOPDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
 
 BUILD_SH=$TOPDIR/build.sh
 
-CMAKE_COMMAND="cmake -DCMAKE_EXPORT_COMPILE_COMMANDS=1 --log-level=WARNING"
+CMAKE_COMMAND="cmake -DCMAKE_EXPORT_COMPILE_COMMANDS=1 --log-level=STATUS"
 
 ALL_ARGS=("$@")
 BUILD_ARGS=()

docs/src/how_to_build.md

@@ -5,7 +5,7 @@
 假设系统上已经安装了make等编译工具。
 
 MiniOB 需要使用：
-- cmake 版本 >= 3.10
+- cmake 版本 >= 3.13
 - gcc/clang gcc建议8.3以上，编译器需要支持c++20新标准
 
 1. 环境初始化