C++库移植到iOS系统使用

使用cmakelist 来迁移

准备工作：

1、mac一台
2、cmake 安装 cmake使用， [cmake下载] (cmake.org/download/) 3、xcode 安装好

cmakelist 文件代码：

# 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 3.18.1)

# Declares and names the project.

project(recognizersdk C CXX)
set(CMAKE_CXX_STANDARD 14)

MESSAGE( STATUS "CMAKE_CXX_FLAGS: " ${CMAKE_CXX_FLAGS} )


# 工程名
set(PROJECT_NAME xxxsdk)

set(SRC_FILES
    Testcpp.cpp
   )
   
include_directories(
    ./include
    ./include/c_api
    ./include/cxx_api
)
# 编译时链接路径 此处对不同架构时的链接路径做了一些处理（如果不需要链接其他库可以注释掉）
if(${ARCHS} STREQUAL "arm64")
    set(LIB_DIR ios_arm64_r)
elseif(${ARCHS} STREQUAL "armv7")
    set(LIB_DIR ios_armv7_r)
elseif(${ARCHS} STREQUAL "armv7s")
    set(LIB_DIR ios_armv7s_r)
elseif(${ARCHS} STREQUAL "i386")
    set(LIB_DIR ios_i386_r)
elseif(${ARCHS} STREQUAL "x86_64")
    set(LIB_DIR ios_x86_64_r)
endif()
    link_directories($ENV{DROOT}/bin/${LIB_DIR})
 
# 生成目标 STATIC和ARCHIVE对应静态库 SHARED和LIBRARY对应动态库
 add_library(${PROJECT_NAME} STATIC ${SRC_FILES})
 link_directories(${CMAKE_SOURCE_DIR}/Xamarin.iOS)
 
# 链接/安装
target_link_libraries(${PROJECT_NAME}  Microsoft.CognitiveServices.Speech.core)
# 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.

ios.toolchain.cmake 文件也要有哈，然后在执行：

cd example/example-lib
mkdir build
cd build
cmake .. -G Xcode -DCMAKE_TOOLCHAIN_FILE=../../ios.toolchain.cmake -DPLATFORM=OS64
cmake --build . --config Release

然后就能得到在iOS上使用的.a库了。