如何通过 C++ 使用 Octave 库
这是我的第一个问题，如果它表述得不好或愚蠢的话，我很抱歉。
我正在尝试将八度音程库与 C++ 一起使用
我在 Ubuntu 上使用 Qt 创建者（linux noob）
#include "octave/oct.h"
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Matrix matrix(3,4);
return a.exec();
}
首先我遇到了一些未定义的引用错误。我发现该程序缺少库，所以我寻找库“liboctave.so”。我在 usr/lib/octave-3.2.4 中找到了它。更准确地说，有一个名为“liboctave.so”的符号链接指向“liboctave.so.3.2.4”文件。我使用 QtCreators“添加库”功能将库添加到我的项目中。该程序在我的 .pro 文件中生成了此代码
unix:!macx:!symbian: LIBS += -L$$PWD/../../../../usr/lib/octave-3.2.4/ -loctave
INCLUDEPATH += $$PWD/../../../../usr/lib/octave-3.2.4
DEPENDPATH += $$PWD/../../../../usr/lib/octave-3.2.4
该程序构建时没有错误。甚至不抱怨未定义的引用。但是当我运行它时，我
开始 /home/martin/Projects/test-build-desktop/test...
/home/martin/Projects/test-build-desktop/test: error while loading shared libraries: liboctave.so: cannot open shared object file: No such file or directory
/home/martin/Projects/test-build-desktop/test exited with code 127
我不明白为什么它找不到该文件。我正在用肉眼看着文件。
我发现问题可能是权限问题，所以我将“liboctave.so.3.2.4”文件复制到项目位置，将其重命名为“liboctave.so”并为每个人添加了所有权限。然后使用 Qtcreator“添加库”功能添加此库，但我仍然遇到相同的错误。
请帮我
This is my first question here, so sorry in forward if it is not well formulated or stupid.
I am trying to use the octave libraries with C++
I am using Qt creator on Ubuntu (linux noob)
#include "octave/oct.h"
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Matrix matrix(3,4);
return a.exec();
}
At first I got some undefined references errors. I figured out the program is missing libraries, so I looked for the library "liboctave.so". I found it in usr/lib/octave-3.2.4. To be more precise there was a symbolic link named "liboctave.so" pointing to "liboctave.so.3.2.4" file. I used the QtCreators "add Library" feature to add the library to my project. The program generated this code in my .pro file
unix:!macx:!symbian: LIBS += -L$PWD/../../../../usr/lib/octave-3.2.4/ -loctave
INCLUDEPATH += $PWD/../../../../usr/lib/octave-3.2.4
DEPENDPATH += $PWD/../../../../usr/lib/octave-3.2.4
The program built without error. Not even complaining about undefined references. But when I run it I get
Starting /home/martin/Projects/test-build-desktop/test...
/home/martin/Projects/test-build-desktop/test: error while loading shared libraries: liboctave.so: cannot open shared object file: No such file or directory
/home/martin/Projects/test-build-desktop/test exited with code 127
I cannot figure out why it cannot find the file. I am looking at the file with my bare eyes.
I figured out that the problem may be permission, so I copied the "liboctave.so.3.2.4" file to the project location, renamed it "liboctave.so" and added all permissions for everybody. Then added this library using the Qtcreator "add library" feature and I still get the same error.
Please help me
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liboctave 没有安装在标准位置，当你编译它时你的 povide
参数
-L$$PWD/../../../../usr/lib/octave-3.2.4/但是在运行中时间尚不清楚。
所以你有两个选择：
提供环境变量
LD_LIBRARY_PATH=/full/path/to/usr/lib/octave-3.2.4然后运行程序：使用可执行文件对路径进行硬编码使用附加选项：
-Wl,-rpath=$$PWD/../../../../usr/lib/octave-3.2.4/它会在此位置搜索它。
The liboctave is not installed in standard location, when you compile it your povide
a parameter
-L$$PWD/../../../../usr/lib/octave-3.2.4/however in the runtime it is not known.
So you have two options:
Provide environment variable
LD_LIBRARY_PATH=/full/path/to/usr/lib/octave-3.2.4and then run the program:Hardcode the path withing excutable using an additional option:
-Wl,-rpath=$$PWD/../../../../usr/lib/octave-3.2.4/And it would search for it in this location.