编译环境是mingw gcc 4.62

完整信息如下

*** objects  build/version.o is not portable!
Creating library file: build/.libs/libSDL2.dll.a
  CC     build/SDL_windows_main.lo
  LTLINK build/libSDL2main.la
libtool: link: warning: undefined symbols not allowed in i686-pc-mingw32 shared
libraries
  CC     build/SDL_test_assert.lo
  CC     build/SDL_test_common.lo
  CC     build/SDL_test_compare.lo
  CC     build/SDL_test_crc32.lo
  CC     build/SDL_test_font.lo
  CC     build/SDL_test_fuzzer.lo
  CC     build/SDL_test_harness.lo
  CC     build/SDL_test_imageBlit.lo
  CC     build/SDL_test_imageBlitBlend.lo
  CC     build/SDL_test_imageFace.lo
  CC     build/SDL_test_imagePrimitives.lo
  CC     build/SDL_test_imagePrimitivesBlend.lo
  CC     build/SDL_test_log.lo
  CC     build/SDL_test_md5.lo
  CC     build/SDL_test_memory.lo
  CC     build/SDL_test_random.lo
  LTLINK build/libSDL2_test.la
libtool: link: warning: undefined symbols not allowed in i686-pc-mingw32 shared
libraries

Administrator@USER-20151226SM /i/hdcd/sdl2-2.0.12
$

[课程]Android-CTF解题方法汇总！