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[英]How to link and compile a C++ project for Linux using CMake? (Adapting CMakeLists.txt)
[英]Link RtAudio into another project using CMakeLists
我正在尝试使用RtAudio生成流音频。 但是,当我尝试包含“ RtAudio.h”文件时,该程序总是会抱怨一些奇怪的东西。 我的项目结构如下:
基本上,文件夹rtaudio是我从此处安装的存储库,而CMakeList1也从此处安装。
CMakeList在主文件夹下:
cmake_minimum_required(VERSION 2.8)
# Add -Wall and -Wextra. Also,
# treat C/C++ warnings as errors if -DADM_FATAL_WARNINGS=ON.
include (cmake/FatalWarnings.cmake)
ADM_EXTRA_WARNINGS()
add_subdirectory(demos)
CMakeList2:
project(malos_service C CXX)
cmake_minimum_required(VERSION 2.8)
add_definitions(-std=c++11)
FIND_LIBRARY(WIRINGPI_LIB NAMES wiringPi)
....
set(AUDIO_LIBRARY_FOUND OFF)
find_path(RTAUDIO_HEADER_PATH "RtAudio.h" HINTS ../rtaudio)
if(RTAUDIO_HEADER_PATH)
message(STATUS "Compiling provided rtaudio-library!")
add_subdirectory(../rtaudio rtaudio)
add_definitions(-DRTAUDIO_HEADER="../rtaudio/RtAudio.h")
set(AUDIO_LIBRARY_FOUND ON)
endif()
if (NOT AUDIO_LIBRARY_FOUND)
message(SEND_ERROR "no supported library")
endif()
# Check if any audio-library was added
if(NOT AUDIO_LIBRARY_FOUND)
message(SEND_ERROR "No supported audio-library found!")
endif()
....
add_executable(...)
要编译这些文件,请在Project文件夹下,
mkdir build
cd build
cmake ..
make
总的来说,我只是添加:
#include "../rtaudio/RtAudio.h"
编译make之后 ,我会得到很多错误:
In file included from ~/Project/demos/main.cpp:7:0:
/home/pi/Downloads/Project/demos/../rtaudio/RtAudio.h:729:5: error: expected identifier before numeric constant
OUTPUT,
^
/home/pi/Downloads/Project/demos/../rtaudio/RtAudio.h:729:5: error: expected ‘}’ before numeric constant
/home/pi/Downloads/Project/demos/../rtaudio/RtAudio.h:729:5: error: expected unqualified-id before numeric constant
In file included from /home/pi/Downloads/Project/demos/main.cpp:25:0:
/home/pi/Downloads/Project/demos/../rtaudio/RtAudio.h: In member function ‘bool RtApi::isStreamOpen() const’:
/home/pi/Downloads/Project/demos/../rtaudio/RtAudio.h:709:44: error: ‘stream_’ was not declared in this scope
bool isStreamOpen( void ) const { return stream_.state != STREAM_CLOSED; }
...
* PS:如果我直接执行rtaudio,则rtaudio下的程序可以正常工作,这意味着错误不应该来自rtaudio * (希望如此)
我的举报方式有问题吗? 有人知道如何解决此问题吗?
收到所有这些错误的原因是,您没有从RtAudio
的源代码中编译项目。 您需要将RtAudio.cpp
文件复制到您的项目中。 看来您正在使用树莓派,所以实际上编译项目所需要做的就是设置文件,如下所示:
- Project
- RtAudio.h
- RtAudio.cpp
- main.cpp
然后进行编译,您将需要运行
g++ main.cpp RtAudio.cpp -o run
而已! 假设您已经安装了RtAudio的依赖项,它应该编译没有问题。
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