交叉编译SFML时对libpng相关符号的未定义引用

时间：2017-01-09 12:55:00

标签： c++ linker-errors sfml undefined-reference

我正致力于将SFML从Linux交叉编译到Windows。我已经安装了所有依赖项。当我尝试构建SFML库时，第一位就可以了，构建系统，网络和窗口。但是，在构建sfml-graphics时，它确实没问题，但无法链接库。

[ 16%] Built target sfml-system
[ 18%] Built target sfml-main
[ 39%] Built target sfml-window
[ 50%] Built target sfml-network
[ 51%] Linking CXX shared library ../../../lib/sfml-graphics-2.dll
/usr/lib/gcc/i686-w64-mingw32/6.2-posix/../../../../i686-w64-mingw32/lib/../lib/libfreetype.a(sfnt.o): In function `Load_SBit_Png':
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:209: undefined reference to `png_create_read_struct'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:219: undefined reference to `png_create_info_struct'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:227: undefined reference to `png_set_longjmp_fn'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:326: undefined reference to `png_destroy_read_struct'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:233: undefined reference to `png_set_read_fn'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:235: undefined reference to `png_read_info'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:236: undefined reference to `png_get_IHDR'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:254: undefined reference to `png_set_expand_gray_1_2_4_to_8'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:261: undefined reference to `png_get_valid'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:276: undefined reference to `png_set_interlace_handling'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:278: undefined reference to `png_set_filler'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:281: undefined reference to `png_read_update_info'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:282: undefined reference to `png_get_IHDR'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:301: undefined reference to `png_set_read_user_transform_fn'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:223: undefined reference to `png_destroy_read_struct'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:248: undefined reference to `png_set_palette_to_rgb'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:273: undefined reference to `png_set_gray_to_rgb'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:268: undefined reference to `png_set_packing'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:265: undefined reference to `png_set_strip_16'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:262: undefined reference to `png_set_tRNS_to_alpha'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:319: undefined reference to `png_read_image'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:323: undefined reference to `png_read_end'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:306: undefined reference to `png_set_read_user_transform_fn'
/usr/lib/gcc/i686-w64-mingw32/6.2-posix/../../../../i686-w64-mingw32/lib/../lib/libfreetype.a(sfnt.o): In function `error_callback':
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:125: undefined reference to `png_get_error_ptr'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:132: undefined reference to `png_set_longjmp_fn'
/usr/lib/gcc/i686-w64-mingw32/6.2-posix/../../../../i686-w64-mingw32/lib/../lib/libfreetype.a(sfnt.o): In function `read_data_from_FT_Stream':
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:156: undefined reference to `png_get_io_ptr'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:162: undefined reference to `png_get_error_ptr'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:166: undefined reference to `png_error'
collect2: error: ld returned 1 exit status
src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/build.make:884: recipe for target 'lib/sfml-graphics-2.dll' failed
make[2]: *** [lib/sfml-graphics-2.dll] Error 1
CMakeFiles/Makefile2:339: recipe for target 'src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/all' failed
make[1]: *** [src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/all] Error 2
Makefile:127: recipe for target 'all' failed
make: *** [all] Error 2

我在尝试之前尝试指定LDFLAGS，但无济于事。

cmake -DCMAKE_TOOLCHAIN_FILE=/etc/toolchains/win32-tc.cmake -DCMAKE_INSTALL_PREFIX=/usr/i686-w64-mingw32 .. && LDFLAGS="-L/usr/i686-w64-mingw32/lib -lpng" sudo make all install

我已经成功构建了libpng，列出/usr/i686-w64-mingw32/lib（我的交叉编译器lib目录）显示静态库就在那里。

$ ls /usr/i686-w64-mingw32/lib | grep libpng
libpng
libpng16.a
libpng16.dll.a
libpng.a
libpng.dll.a

我不知道会出现什么问题。有人有任何线索吗？提前谢谢。

编辑：提供更有趣的输出以尝试查明问题。

$ cmake -DCMAKE_TOOLCHAIN_FILE=/etc/toolchains/win32-tc.cmake -DCMAKE_INSTALL_PREFIX=/usr/i686-w64-mingw32 -DCMAKE_RULE_MESSAGES:BOOL=OFF -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON .. && sudo make --no-print-directory all install
-- Configuring done
-- Generating done
-- Build files have been written to: /home/chemicalchems/Downloads/SFML/build
/usr/bin/cmake -H/home/chemicalchems/Downloads/SFML -B/home/chemicalchems/Downloads/SFML/build --check-build-system CMakeFiles/Makefile.cmake 0
/usr/bin/cmake -E cmake_progress_start /home/chemicalchems/Downloads/SFML/build/CMakeFiles /home/chemicalchems/Downloads/SFML/build/CMakeFiles/progress.marks
make -f CMakeFiles/Makefile2 all
make -f src/SFML/System/CMakeFiles/sfml-system.dir/build.make src/SFML/System/CMakeFiles/sfml-system.dir/depend
cd /home/chemicalchems/Downloads/SFML/build && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /home/chemicalchems/Downloads/SFML /home/chemicalchems/Downloads/SFML/src/SFML/System /home/chemicalchems/Downloads/SFML/build /home/chemicalchems/Downloads/SFML/build/src/SFML/System /home/chemicalchems/Downloads/SFML/build/src/SFML/System/CMakeFiles/sfml-system.dir/DependInfo.cmake --color=
make -f src/SFML/System/CMakeFiles/sfml-system.dir/build.make src/SFML/System/CMakeFiles/sfml-system.dir/build
make[2]: Nothing to be done for 'src/SFML/System/CMakeFiles/sfml-system.dir/build'.
[ 16%] Built target sfml-system
make -f src/SFML/Main/CMakeFiles/sfml-main.dir/build.make src/SFML/Main/CMakeFiles/sfml-main.dir/depend
cd /home/chemicalchems/Downloads/SFML/build && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /home/chemicalchems/Downloads/SFML /home/chemicalchems/Downloads/SFML/src/SFML/Main /home/chemicalchems/Downloads/SFML/build /home/chemicalchems/Downloads/SFML/build/src/SFML/Main /home/chemicalchems/Downloads/SFML/build/src/SFML/Main/CMakeFiles/sfml-main.dir/DependInfo.cmake --color=
make -f src/SFML/Main/CMakeFiles/sfml-main.dir/build.make src/SFML/Main/CMakeFiles/sfml-main.dir/build
make[2]: Nothing to be done for 'src/SFML/Main/CMakeFiles/sfml-main.dir/build'.
[ 18%] Built target sfml-main
make -f src/SFML/Window/CMakeFiles/sfml-window.dir/build.make src/SFML/Window/CMakeFiles/sfml-window.dir/depend
cd /home/chemicalchems/Downloads/SFML/build && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /home/chemicalchems/Downloads/SFML /home/chemicalchems/Downloads/SFML/src/SFML/Window /home/chemicalchems/Downloads/SFML/build /home/chemicalchems/Downloads/SFML/build/src/SFML/Window /home/chemicalchems/Downloads/SFML/build/src/SFML/Window/CMakeFiles/sfml-window.dir/DependInfo.cmake --color=
make -f src/SFML/Window/CMakeFiles/sfml-window.dir/build.make src/SFML/Window/CMakeFiles/sfml-window.dir/build
make[2]: Nothing to be done for 'src/SFML/Window/CMakeFiles/sfml-window.dir/build'.
[ 39%] Built target sfml-window
make -f src/SFML/Network/CMakeFiles/sfml-network.dir/build.make src/SFML/Network/CMakeFiles/sfml-network.dir/depend
cd /home/chemicalchems/Downloads/SFML/build && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /home/chemicalchems/Downloads/SFML /home/chemicalchems/Downloads/SFML/src/SFML/Network /home/chemicalchems/Downloads/SFML/build /home/chemicalchems/Downloads/SFML/build/src/SFML/Network /home/chemicalchems/Downloads/SFML/build/src/SFML/Network/CMakeFiles/sfml-network.dir/DependInfo.cmake --color=
make -f src/SFML/Network/CMakeFiles/sfml-network.dir/build.make src/SFML/Network/CMakeFiles/sfml-network.dir/build
make[2]: Nothing to be done for 'src/SFML/Network/CMakeFiles/sfml-network.dir/build'.
[ 50%] Built target sfml-network
make -f src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/build.make src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/depend
cd /home/chemicalchems/Downloads/SFML/build && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /home/chemicalchems/Downloads/SFML /home/chemicalchems/Downloads/SFML/src/SFML/Graphics /home/chemicalchems/Downloads/SFML/build /home/chemicalchems/Downloads/SFML/build/src/SFML/Graphics /home/chemicalchems/Downloads/SFML/build/src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/DependInfo.cmake --color=
make -f src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/build.make src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/build
cd /home/chemicalchems/Downloads/SFML/build/src/SFML/Graphics && /usr/bin/cmake -E cmake_link_script CMakeFiles/sfml-graphics.dir/link.txt --verbose=1
/usr/bin/cmake -E remove -f CMakeFiles/sfml-graphics.dir/objects.a
/usr/bin/ar cr CMakeFiles/sfml-graphics.dir/objects.a @CMakeFiles/sfml-graphics.dir/objects1.rsp
/usr/bin/i686-w64-mingw32-g++-posix   -O3 -DNDEBUG  -shared -o ../../../lib/sfml-graphics-2.dll -Wl,--out-implib,../../../lib/libsfml-graphics.a -Wl,--major-image-version,2,--minor-image-version,4 -Wl,--whole-archive CMakeFiles/sfml-graphics.dir/objects.a -Wl,--no-whole-archive @CMakeFiles/sfml-graphics.dir/linklibs.rsp
/usr/lib/gcc/i686-w64-mingw32/6.2-posix/../../../../i686-w64-mingw32/lib/../lib/libfreetype.a(sfnt.o): In function `Load_SBit_Png':
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:209: undefined reference to `png_create_read_struct'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:219: undefined reference to `png_create_info_struct'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:227: undefined reference to `png_set_longjmp_fn'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:326: undefined reference to `png_destroy_read_struct'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:233: undefined reference to `png_set_read_fn'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:235: undefined reference to `png_read_info'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:236: undefined reference to `png_get_IHDR'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:254: undefined reference to `png_set_expand_gray_1_2_4_to_8'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:261: undefined reference to `png_get_valid'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:276: undefined reference to `png_set_interlace_handling'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:278: undefined reference to `png_set_filler'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:281: undefined reference to `png_read_update_info'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:282: undefined reference to `png_get_IHDR'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:301: undefined reference to `png_set_read_user_transform_fn'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:223: undefined reference to `png_destroy_read_struct'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:248: undefined reference to `png_set_palette_to_rgb'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:273: undefined reference to `png_set_gray_to_rgb'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:268: undefined reference to `png_set_packing'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:265: undefined reference to `png_set_strip_16'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:262: undefined reference to `png_set_tRNS_to_alpha'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:319: undefined reference to `png_read_image'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:323: undefined reference to `png_read_end'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:306: undefined reference to `png_set_read_user_transform_fn'
/usr/lib/gcc/i686-w64-mingw32/6.2-posix/../../../../i686-w64-mingw32/lib/../lib/libfreetype.a(sfnt.o): In function `error_callback':
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:125: undefined reference to `png_get_error_ptr'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:132: undefined reference to `png_set_longjmp_fn'
/usr/lib/gcc/i686-w64-mingw32/6.2-posix/../../../../i686-w64-mingw32/lib/../lib/libfreetype.a(sfnt.o): In function `read_data_from_FT_Stream':
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:156: undefined reference to `png_get_io_ptr'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:162: undefined reference to `png_get_error_ptr'
/home/chemicalchems/Downloads/libfreetype/src/sfnt/pngshim.c:166: undefined reference to `png_error'
collect2: error: ld returned 1 exit status
src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/build.make:854: recipe for target 'lib/sfml-graphics-2.dll' failed
make[2]: *** [lib/sfml-graphics-2.dll] Error 1
CMakeFiles/Makefile2:342: recipe for target 'src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/all' failed
make[1]: *** [src/SFML/Graphics/CMakeFiles/sfml-graphics.dir/all] Error 2
Makefile:130: recipe for target 'all' failed
make: *** [all] Error 2

编辑2：请求工具链文件

SET(CMAKE_SYSTEM_NAME Windows)

SET(COMPILER_PREFIX i686-w64-mingw32)

SET(CMAKE_C_COMPILER ${COMPILER_PREFIX}-gcc-posix)
SET(CMAKE_CXX_COMPILER ${COMPILER_PREFIX}-g++-posix)
SET(CMAKE_RC_COMPILER ${COMPILER_PREFIX}-windres)

SET(CMAKE_FIND_ROOT_PATH /usr/${COMPILER_PREFIX})

set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

set(CMAKE_INSTALL_PREFIX:PATH /usr/${COMPILER_PREFIX})

1 个答案:

答案 0 :(得分：1)

如果你需要做的就是通过交叉编译为Windows构建SFML - 另一种方法是使用MXE交叉编译环境。这样你就需要：

  1. 下载MXE package或克隆Git repo
  2. cd进入目录
  3. 根据需要编辑/创建settings.mk配置文件
  4. 执行make sfml
    5. 然后，MXE会自动下载并构建SFML所需的所有依赖项。

    MXE教程：http://mxe.cc/#tutorial

    示例settings.mk文件：

    # This variable controls the number of compilation processes
# within one package ("intra-package parallelism").
JOBS := 12

# This variable controls the targets that will build.
#MXE_TARGETS :=  i686-w64-mingw32.static i686-w64-mingw32.shared  x86_64-w64-mingw32.static x86_64-w64-mingw32.shared
MXE_TARGETS :=  x86_64-w64-mingw32.static

    这并没有真正帮助你解决构建错误，但我在这里发布它是为了防止你无法解决它而你想尝试其他解决方案，以及其他人试图交叉编译SFML

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