如何使用 CMake 将 FreeType 导入我的 Android Studio NDK 项目
How to import FreeType to my Android Studio NDK project using CMake
你好,我是 Android NDK 编程的初学者,我需要一些帮助来让 freetype 库与我的项目一起工作。我已经连续 3 个小时尝试以某种方式将 freetype 导入我的 Android Studio 项目。我在互联网上搜索,但找不到任何有效的解决方案。我下载了库并将其放在 project.But 的 cpp 文件夹中 我不知道如何包含 freetype。如有任何帮助,我们将不胜感激!
这是我的 CMakeLists.txt 外观以及我添加的文件适用于它们的方式:
cmake_minimum_required(VERSION 3.10.2)
project("firstnative")
include_directories(stb/stb_lib
GoldFlow/Core
GoldFlow/Graphics
GoldFlow/Math
GoldFlow/glm
GoldFlow/glm/gtc
GoldFlow/entt
GoldFlow/physics
GoldFlow/scripts
GoldFlow/freetype/include
GoldFlow/freetype/include/freetype/
GoldFlow/freetype/include/freetype/config
GoldFlow/freetype/include/freetype/internal
GoldFlow/freetype/include/freetype/internal/services
)
add_library(
Native
SHARED
GoldFlow/Math/GoldMath.cpp
GoldFlow/Graphics/Shader.cpp
GoldFlow/Graphics/Renderer2D.cpp
GoldFlow/Graphics/Camera.cpp
GoldFlow/Graphics/Texture.cpp
GoldFlow/Graphics/SpriteSheet.cpp
GoldFlow/Core/Scene.cpp
GoldFlow/Core/GameObject.cpp
GoldFlow/Core/Application.cpp
GoldFlow/Core/Controls.cpp
GoldFlow/Core/Timer.cpp
GoldFlow/physics/AABB.cpp
GoldFlow/physics/Objects.cpp
GoldFlow/scripts/ControllerScript.cpp
GoldFlow/scripts/CharacterMovingScript.cpp
native.cpp)
add_library(
Freetype
SHARED
GoldFlow/freetype/src/autofit/autofit.c
GoldFlow/freetype/src/base/ftbase.c
GoldFlow/freetype/src/base/ftbbox.c
GoldFlow/freetype/src/base/ftbdf.c
GoldFlow/freetype/src/base/ftbitmap.c
GoldFlow/freetype/src/base/ftcid.c
GoldFlow/freetype/src/base/ftfstype.c
GoldFlow/freetype/src/base/ftgasp.c
GoldFlow/freetype/src/base/ftglyph.c
GoldFlow/freetype/src/base/ftgxval.c
GoldFlow/freetype/src/base/ftinit.c
GoldFlow/freetype/src/base/ftmm.c
GoldFlow/freetype/src/base/ftotval.c
GoldFlow/freetype/src/base/ftpatent.c
GoldFlow/freetype/src/base/ftpfr.c
GoldFlow/freetype/src/base/ftstroke.c
GoldFlow/freetype/src/base/ftsynth.c
GoldFlow/freetype/src/base/fttype1.c
GoldFlow/freetype/src/base/ftwinfnt.c
GoldFlow/freetype/src/bdf/bdf.c
GoldFlow/freetype/src/bzip2/ftbzip2.c
GoldFlow/freetype/src/cache/ftcache.c
GoldFlow/freetype/src/cff/cff.c
GoldFlow/freetype/src/cid/type1cid.c
GoldFlow/freetype/src/gzip/ftgzip.c
GoldFlow/freetype/src/lzw/ftlzw.c
GoldFlow/freetype/src/pcf/pcf.c
GoldFlow/freetype/src/pfr/pfr.c
GoldFlow/freetype/src/psaux/psaux.c
GoldFlow/freetype/src/pshinter/pshinter.c
GoldFlow/freetype/src/psnames/psnames.c
GoldFlow/freetype/src/raster/raster.c
GoldFlow/freetype/src/sfnt/sfnt.c
GoldFlow/freetype/src/smooth/smooth.c
GoldFlow/freetype/src/truetype/truetype.c
GoldFlow/freetype/src/type1/type1.c
GoldFlow/freetype/src/type42/type42.c
GoldFlow/freetype/src/winfonts/winfnt.c
)
find_library(
log-lib
log )
find_library(GLES-lib
GLESv3)
target_link_libraries(
Native
${log-lib}
${GLES-lib}
${Freetype}
)
我现在得到的错误是:C:\Users\infer\AndroidStudioProjects\FirstNative\app\src\main\cpp\GoldFlow\freetype\src\base\ftbdf.c:40:14: 错误:使用未声明的标识符 'FT_ERR_PREFIXInvalid_Face_Handle';你是说 'FT_Err_Invalid_Face_Handle'?
好的,解决方法非常简单。实际上,我所做的只是在名为 freetype 的 cpp 文件夹中创建了目录,在该目录中我放置了每个 freetype 文件,并将该文件夹添加为 CMake 中的子目录,并在最后链接,现在一切正常。这是我的 CMake:
# For more information about using CMake with Android Studio, read the
# documentation: https://d.android.com/studio/projects/add-native-code.html
# Sets the minimum version of CMake required to build the native library.
cmake_minimum_required(VERSION 3.10.2)
# Declares and names the project.
project("firstnative")
include_directories(stb/stb_lib
GoldFlow/Core
GoldFlow/Graphics
GoldFlow/Math
GoldFlow/glm
GoldFlow/glm/gtc
GoldFlow/entt
GoldFlow/physics
GoldFlow/scripts
GoldFlow/text
)
# Creates and names a library, sets it as either STATIC
# or SHARED, and provides the relative paths to its source code.
# You can define multiple libraries, and CMake builds them for you.
# Gradle automatically packages shared libraries with your APK.
add_library( # Sets the name of the library.
Native
# Sets the library as a shared library.
SHARED
# Provides a relative path to your source file(s).
GoldFlow/Math/GoldMath.cpp
GoldFlow/Graphics/Shader.cpp
GoldFlow/Graphics/Renderer2D.cpp
GoldFlow/Graphics/Camera.cpp
GoldFlow/Graphics/Texture.cpp
GoldFlow/Graphics/SpriteSheet.cpp
GoldFlow/Core/Scene.cpp
GoldFlow/Core/GameObject.cpp
GoldFlow/Core/Application.cpp
GoldFlow/Core/Controls.cpp
GoldFlow/Core/Timer.cpp
GoldFlow/physics/AABB.cpp
GoldFlow/physics/Objects.cpp
GoldFlow/scripts/ControllerScript.cpp
GoldFlow/scripts/CharacterMovingScript.cpp
GoldFlow/text/TextRenderer.cpp
native.cpp)
# Searches for a specified prebuilt library and stores the path as a
# variable. Because CMake includes system libraries in the search path by
# default, you only need to specify the name of the public NDK library
# you want to add. CMake verifies that the library exists before
# completing its build.
#sd
find_library( # Sets the name of the path variable.
log-lib
# Specifies the name of the NDK library that
# you want CMake to locate.
log )
find_library(GLES-lib
GLESv3)
add_subdirectory(freetype)
target_link_libraries( # Specifies the target library.
Native
# Links the target library to the log and gl es library
# included in the NDK.
${log-lib}
${GLES-lib}
freetype
)
你好,我是 Android NDK 编程的初学者,我需要一些帮助来让 freetype 库与我的项目一起工作。我已经连续 3 个小时尝试以某种方式将 freetype 导入我的 Android Studio 项目。我在互联网上搜索,但找不到任何有效的解决方案。我下载了库并将其放在 project.But 的 cpp 文件夹中 我不知道如何包含 freetype。如有任何帮助,我们将不胜感激!
这是我的 CMakeLists.txt 外观以及我添加的文件适用于它们的方式:
cmake_minimum_required(VERSION 3.10.2)
project("firstnative")
include_directories(stb/stb_lib
GoldFlow/Core
GoldFlow/Graphics
GoldFlow/Math
GoldFlow/glm
GoldFlow/glm/gtc
GoldFlow/entt
GoldFlow/physics
GoldFlow/scripts
GoldFlow/freetype/include
GoldFlow/freetype/include/freetype/
GoldFlow/freetype/include/freetype/config
GoldFlow/freetype/include/freetype/internal
GoldFlow/freetype/include/freetype/internal/services
)
add_library(
Native
SHARED
GoldFlow/Math/GoldMath.cpp
GoldFlow/Graphics/Shader.cpp
GoldFlow/Graphics/Renderer2D.cpp
GoldFlow/Graphics/Camera.cpp
GoldFlow/Graphics/Texture.cpp
GoldFlow/Graphics/SpriteSheet.cpp
GoldFlow/Core/Scene.cpp
GoldFlow/Core/GameObject.cpp
GoldFlow/Core/Application.cpp
GoldFlow/Core/Controls.cpp
GoldFlow/Core/Timer.cpp
GoldFlow/physics/AABB.cpp
GoldFlow/physics/Objects.cpp
GoldFlow/scripts/ControllerScript.cpp
GoldFlow/scripts/CharacterMovingScript.cpp
native.cpp)
add_library(
Freetype
SHARED
GoldFlow/freetype/src/autofit/autofit.c
GoldFlow/freetype/src/base/ftbase.c
GoldFlow/freetype/src/base/ftbbox.c
GoldFlow/freetype/src/base/ftbdf.c
GoldFlow/freetype/src/base/ftbitmap.c
GoldFlow/freetype/src/base/ftcid.c
GoldFlow/freetype/src/base/ftfstype.c
GoldFlow/freetype/src/base/ftgasp.c
GoldFlow/freetype/src/base/ftglyph.c
GoldFlow/freetype/src/base/ftgxval.c
GoldFlow/freetype/src/base/ftinit.c
GoldFlow/freetype/src/base/ftmm.c
GoldFlow/freetype/src/base/ftotval.c
GoldFlow/freetype/src/base/ftpatent.c
GoldFlow/freetype/src/base/ftpfr.c
GoldFlow/freetype/src/base/ftstroke.c
GoldFlow/freetype/src/base/ftsynth.c
GoldFlow/freetype/src/base/fttype1.c
GoldFlow/freetype/src/base/ftwinfnt.c
GoldFlow/freetype/src/bdf/bdf.c
GoldFlow/freetype/src/bzip2/ftbzip2.c
GoldFlow/freetype/src/cache/ftcache.c
GoldFlow/freetype/src/cff/cff.c
GoldFlow/freetype/src/cid/type1cid.c
GoldFlow/freetype/src/gzip/ftgzip.c
GoldFlow/freetype/src/lzw/ftlzw.c
GoldFlow/freetype/src/pcf/pcf.c
GoldFlow/freetype/src/pfr/pfr.c
GoldFlow/freetype/src/psaux/psaux.c
GoldFlow/freetype/src/pshinter/pshinter.c
GoldFlow/freetype/src/psnames/psnames.c
GoldFlow/freetype/src/raster/raster.c
GoldFlow/freetype/src/sfnt/sfnt.c
GoldFlow/freetype/src/smooth/smooth.c
GoldFlow/freetype/src/truetype/truetype.c
GoldFlow/freetype/src/type1/type1.c
GoldFlow/freetype/src/type42/type42.c
GoldFlow/freetype/src/winfonts/winfnt.c
)
find_library(
log-lib
log )
find_library(GLES-lib
GLESv3)
target_link_libraries(
Native
${log-lib}
${GLES-lib}
${Freetype}
)
我现在得到的错误是:C:\Users\infer\AndroidStudioProjects\FirstNative\app\src\main\cpp\GoldFlow\freetype\src\base\ftbdf.c:40:14: 错误:使用未声明的标识符 'FT_ERR_PREFIXInvalid_Face_Handle';你是说 'FT_Err_Invalid_Face_Handle'?
好的,解决方法非常简单。实际上,我所做的只是在名为 freetype 的 cpp 文件夹中创建了目录,在该目录中我放置了每个 freetype 文件,并将该文件夹添加为 CMake 中的子目录,并在最后链接,现在一切正常。这是我的 CMake:
# For more information about using CMake with Android Studio, read the
# documentation: https://d.android.com/studio/projects/add-native-code.html
# Sets the minimum version of CMake required to build the native library.
cmake_minimum_required(VERSION 3.10.2)
# Declares and names the project.
project("firstnative")
include_directories(stb/stb_lib
GoldFlow/Core
GoldFlow/Graphics
GoldFlow/Math
GoldFlow/glm
GoldFlow/glm/gtc
GoldFlow/entt
GoldFlow/physics
GoldFlow/scripts
GoldFlow/text
)
# Creates and names a library, sets it as either STATIC
# or SHARED, and provides the relative paths to its source code.
# You can define multiple libraries, and CMake builds them for you.
# Gradle automatically packages shared libraries with your APK.
add_library( # Sets the name of the library.
Native
# Sets the library as a shared library.
SHARED
# Provides a relative path to your source file(s).
GoldFlow/Math/GoldMath.cpp
GoldFlow/Graphics/Shader.cpp
GoldFlow/Graphics/Renderer2D.cpp
GoldFlow/Graphics/Camera.cpp
GoldFlow/Graphics/Texture.cpp
GoldFlow/Graphics/SpriteSheet.cpp
GoldFlow/Core/Scene.cpp
GoldFlow/Core/GameObject.cpp
GoldFlow/Core/Application.cpp
GoldFlow/Core/Controls.cpp
GoldFlow/Core/Timer.cpp
GoldFlow/physics/AABB.cpp
GoldFlow/physics/Objects.cpp
GoldFlow/scripts/ControllerScript.cpp
GoldFlow/scripts/CharacterMovingScript.cpp
GoldFlow/text/TextRenderer.cpp
native.cpp)
# Searches for a specified prebuilt library and stores the path as a
# variable. Because CMake includes system libraries in the search path by
# default, you only need to specify the name of the public NDK library
# you want to add. CMake verifies that the library exists before
# completing its build.
#sd
find_library( # Sets the name of the path variable.
log-lib
# Specifies the name of the NDK library that
# you want CMake to locate.
log )
find_library(GLES-lib
GLESv3)
add_subdirectory(freetype)
target_link_libraries( # Specifies the target library.
Native
# Links the target library to the log and gl es library
# included in the NDK.
${log-lib}
${GLES-lib}
freetype
)