c++ - CodeSourcery 给出编译错误 : missing bits/c++config. h

Question

在我的项目中，我将 Eigen C++ 库用于线性代数。 仅 当我为 ARM NEON 打开矢量化标志 (-mfpu=neon -mfloat-abi=softfp) 时，出现编译器错误 - c++config.h 没有这样的文件或目录。

我不明白哪里出了问题，这个 bits/c++config.h 是什么？我应该怎么做才能解决这个问题？

维克拉姆

---

主.c

#include<iostream>
#include <Eigen/Core>

// import most common Eigen types
using namespace Eigen;

int main(int, char *[])
{
    Matrix4f m3;
    m3 << 1, 2, 3, 0, 4, 5, 6, 0, 7, 8, 9, 0, 0, 0, 0, 0;
    Matrix4f m4;

    asm("#begins here");
    m4 = m3*m3;
    asm("#ends here");

    std::cout << "m3\n" << m3 << "\nm4:\n" << m4 << std::endl;

    std::cout << "DONE!!";
}

---

生成文件

CPP=    /home/ubuntu/CodeSourcery/Sourcery_G++/bin/arm-none-linux-gnueabi-c++

all: main 

main: main.cpp
    $(CPP) -mfpu=neon -mfloat-abi=softfp -I /home/ubuntu/Documents/eigen/ main.cpp -o main

clean:
    rm -rf *o main

---

错误

**** Build of configuration Debug for project Test_Eigen ****

make all
/home/ubuntu/CodeSourcery/Sourcery_G++/bin/arm-none-linux-gnueabi-c++ -mfpu=neon -mfloat-abi=softfp -I /home/ubuntu/Documents/eigen/ main.cpp -o main
In file included from main.cpp:1:
/home/ubuntu/CodeSourcery/Sourcery_G++/bin/../lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/include/c++/4.4.1/iostream:39: fatal error: bits/c++config.h: No such file or directory
compilation terminated.
make: *** [main] Error 1

Answer 1

我遇到了同样的错误:

/usr/lib/gcc/x86_64-redhat-linux/4.6.3/../../../../include/c++/4.6.3/iostream:39: error: bits/c++config.h: No such file or directory

在fedora 15安装libstdc++-devel.x86_64 0:4.6.3-2.fc15后解决