问题描述
我在cpp中创建了一个简单的opengl文件.它可以在大学计算机上工作.我可以编译该文件，但是无法运行该已编译文件.我得到的错误是:
I created a simple opengl file in cpp. It works on the University computer. I'm able to compile the file, but i can not run the compiled file. The error I get is:
Inconsistency detected by ld.so: dl-version.c: 224: _dl_check_map_versions: Assertion `needed != ((void *)0)' failed!
文件代码为:
//
// Model.cpp
// cg-projects
//
// Created by HUJI Computer Graphics course staff, 2013.
//
#include "ShaderIO.h"
#include "Model.h"
#include <GL/glew.h>
#ifdef __APPLE__
#include <OpenGL/OpenGL.h>
#else
#include <GL/gl.h>
#endif
#include <glm/glm.hpp>
#include <glm/gtc/type_ptr.hpp>
#include "glm/gtc/matrix_transform.hpp"
#define SHADERS_DIR "shaders/"
Model::Model() :
_vao(0), _vbo(0)
{
}
Model::~Model()
{
if (_vao != 0)
glDeleteVertexArrays(1, &_vao);
if (_vbo != 0)
glDeleteBuffers(1, &_vbo);
}
void Model::init()
{
programManager::sharedInstance()
.createProgram("default",
SHADERS_DIR "SimpleShader.vert",
SHADERS_DIR "SimpleShader.frag");
GLuint program = programManager::sharedInstance().programWithID("default");
// Obtain uniform variable handles:
_fillColorUV = glGetUniformLocation(program, "fillColor");
// Initialize vertices buffer and transfer it to OpenGL
{
// For this example we create a single triangle:
const float vertices[] = {
0.75f, 0.75f, 0.0f, 1.0f,
0.75f, -0.75f, 0.0f, 1.0f,
-0.75f, -0.75f, 0.0f, 1.0f,
};
// Create and bind the object's Vertex Array Object:
glGenVertexArrays(1, &_vao);
glBindVertexArray(_vao);
// Create and load vertex data into a Vertex Buffer Object:
glGenBuffers(1, &_vbo);
glBindBuffer(GL_ARRAY_BUFFER, _vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
// Tells OpenGL that there is vertex data in this buffer object and what form that vertex data takes:
// Obtain attribute handles:
_posAttrib = glGetAttribLocation(program, "position");
glEnableVertexAttribArray(_posAttrib);
glVertexAttribPointer(_posAttrib, // attribute handle
4, // number of scalars per vertex
GL_FLOAT, // scalar type
GL_FALSE,
0,
0);
// Unbind vertex array:
glBindVertexArray(0);
}
}
void Model::draw()
{
// Set the program to be used in subsequent lines:
GLuint program = programManager::sharedInstance().programWithID("default");
glUseProgram(program);
GLenum polygonMode = GL_LINE; // Also try using GL_FILL and GL_POINT
glPolygonMode(GL_FRONT_AND_BACK, polygonMode);
// Set uniform variable with RGB values:
float red = 0.3f; float green = 0.5f; float blue = 0.7f;
glUniform4f(_fillColorUV, red, green, blue, 1.0);
// Draw using the state stored in the Vertex Array object:
glBindVertexArray(_vao);
size_t numberOfVertices = 3;
glDrawArrays(GL_TRIANGLES, 0, numberOfVertices);
// Unbind the Vertex Array object
glBindVertexArray(0);
// Cleanup, not strictly necessary
glUseProgram(0);
}
void Model::resize(int width, int height)
{
_width = width;
_height = height;
_offsetX = 0;
_offsetY = 0;
}
我正在使用ubuntu 13.10.
i'm using ubuntu 13.10.
推荐答案
Ubuntu 13.10的某些更新似乎已更改了某些内容.我也已经编译并运行了没有问题的代码，仅仅有一天，我开始获得相同的断言`need !!((void *)0)'失败！错误，但前提是我必须使用当前的gcc/lib versios重新编译代码.
It looks that some thing has changed by some Ubuntu 13.10 sw updates. I had also code that has compiled and run without problem and just one day I started to get same Assertion `needed != ((void *)0)' failed! error but only if I compiled my code again with current gcc/lib versios.
调试后，我发现断言错误来自/lib/i386-linux-gnu/ld-2.17.so
After debugging I found out that the assert error comes from /lib/i386-linux-gnu/ld-2.17.so
struct link_map *needed = find_needed (strtab + ent->vn_file, map);
/* If NEEDED is NULL this means a dependency was not found
and no stub entry was created. This should never happen. */
assert (needed != NULL);
据说这是永远不会发生的，它没有说明需要什么但没有找到.一些gdb工作，我发现它需要libpthread.so.0.好的问题是，为什么/usr/bin/ld链接程序链接应用程序和ld.so对于此库的需求不同意.
It is said that this should never happen and it does not say what is needed but not found. Some gdb work and i found that it needs libpthread.so.0 . The good question is that why /usr/bin/ld linker linking application and ld.so disagree about need of this library.
我不是有意使用libpthread，但是从某个地方我到达了指向__pthread_key_create @@ GLIBC_2.0的链接映射参考，我不知道这是哪里来的，但可能会导致需要libpthread.so而不添加NEEDED libpthread.so.在objdump -p上为0，如下所示:
I did not intentionally use libpthread but from somewhere i got to my link map reference to __pthread_key_create@@GLIBC_2.0 I don't know where this comes but it may cause need of libpthread.so without adding NEEDED libpthread.so.0 as follows on objdump -p :
Dynamic Section:
NEEDED libglut.so.3
NEEDED libGLU.so.1
NEEDED libGL.so.1
NEEDED libstdc++.so.6
NEEDED libgcc_s.so.1
NEEDED libpthread.so.0
NEEDED libc.so.6
我没有找到此问题的根本原因，但至少没有解决方法.您需要将代码与-pthread选项链接，并对此库进行一些虚拟调用.
I did not find a root cause of this problem but least workaround. You need link your code with -pthread option and have some dummy call to this library .
在您的Makefile库中定义
Define in you Makefile libs
-lglut -lGLU -lGL -lm -pthread
然后包含一些虚拟函数，只需引用一些libpthread函数以使链接程序链接它，就可以得到所需的libpthread.so.0，然后ld.so就很方便了.
Then include some dummy function just refer some libpthread function to make linker link it and you get the NEEDED libpthread.so.0 and then ld.so is hap.
#include <pthread.h>
void junk() {
int i;
i=pthread_getconcurrency();
};
这对我有帮助，我希望对我有帮助.
This helped for me, i hope that it helps.
Ubuntu launcpad中有更多分析 https://bugs.launchpad .net/ubuntu/+ source/nvidia-graphics-drivers-319/+ bug/1248642?comments = all
There is more analysis in Ubuntu launcpadhttps://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-319/+bug/1248642?comments=all
这篇关于运行已编译的C ++文件(使用OpenGL)时出错.错误:"ld.so检测到不一致:dl-version.c:224"的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！