gcc makefile生成静态库和动态库？

Question

用makefile生成.a静态库和.so动态库，其中静态库总是出错。
平台为Fedora-23-x86_64 gcc-5.3.x

exampleMain.o: exampleMain.cpp
    g++ -std=c++11 -I./ -Wall -g -c exampleMain.cpp

################################
# Basic
################################

example.o: example.cpp
    g++ -std=c++11 -I./ -Wall -g -c example.cpp

basic: example.o exampleMain.o
    g++ -std=c++11 -Wall -g -pthread example.o exampleMain.o -o basic.exe


################################
# Static Library
################################

static_example.o: example.cpp
    g++ -std=c++11 -I./ -Wall -g -c example.cpp -o static_example.o

libexample.a: example.o
    ar rcs libexample.a     example.o

static: libexample.a exampleMain.o
    g++ -static exampleMain.o -L./ -lexample -L/usr/lib64/ -pthread -o static.exe


################################
# Shared Library
################################

shared_example.o: example.cpp
    g++ -std=c++11 -I./ -Wall -g -c -fPIC example.cpp -o shared_example.o

libexample.so: example.o
    g++ -shared -Wl,soname,libexample.so.1 -o libexample.so.1.0.1 shared_example.o

shared: example.so exampleMain.o
    g++ exampleMain.o -o shared.exe -L./ -lexample -pthread


################################
# Clean
################################

clean:
    rm *.o *.so *.a *.exe

• (1) make basic 正确

• (2) make static:
  $make static
  g++ -std=c++11 -I./ -Wall -g -c example.cpp
  ar rcs libexample.a example.o
  g++ -std=c++11 -I./ -Wall -g -c exampleMain.cpp
  g++ -static exampleMain.o -L./ -lexample -L/usr/lib64/ -pthread -o static.exe
  /usr/bin/ld: cannot find -lstdc++
  /usr/bin/ld: cannot find -lm
  /usr/bin/ld: cannot find -lpthread
  /usr/bin/ld: cannot find -lc
  collect2: error: ld returned 1 exit status
  makefile:26: recipe for target 'static' failed
  make: * [static] Error 1

• (3) make shared:
  $make shared
  make: * No rule to make target 'example.so', needed by 'shared'. Stop.

Answer 1

静态库用
ar rv libxxx.a a.o b.o c.o
应该就可以了，就是打包。具体的选项是不是rv我忘了，可以搜一下。

g++下的用法我就不清楚了