编译器错误，同时构建使用Eigen，C ++模板库的线性代数的项目 [英] Compiler errors while building a project which uses Eigen, the C++ template library for linear algebra
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问题描述
在我的项目中，当我为ARM NEON打开矢量化标志（mfpu = neon -mfloat-abi = softfp）时，我使用了线性代数的Eigen C ++库和 ONLY 获取编译器错误。我不能理解错了什么。我需要在Eigen库中为ARM NEON启用任何预处理器指令吗？
main.c
＃include< iostream>
#include< Eigen / Core>
//导入最常见的特征类型
使用命名空间Eigen;
int main（int，char * []）
{
Matrix4f m3;
m3< 1，2，3，0，4，5，6，0，7，8，9，0，0，0，0，
Matrix4f m4;
asm（＃begins here）;
m4 = m3 * m3;
asm（＃ends here）;
std :: cout<< m3 \\\
< m3 < \\\
m4：\\\
<< m4 < std :: endl;
std :: cout<< DONE !!;
}
makefile
main：main.cpp
g ++ -mfpu = neon -mfloat-abi = softfp -I / home / ubuntu / Documents / eigen / main.cpp -o main
错误
ubuntu @ ubuntu-desktop：〜/ Documents / mat_mul $ make
g ++ -mfpu = neon -mfloat-abi = softfp -I / home / ubuntu / Documents / eigen / main.cpp -o main
文件包括从/ home / ubuntu / Documents / eigen / Eigen / Core：227，
从main.cpp：2：
/ home / ubuntu / Documents / eigen / Eigen / src / Core / NEON / PacketMath.h：在函数'typename Eigen :: ei_packet_traits< T> :: type Eigen :: ei_pload（const Scalar *）[with Scalar = float]'：
/ home / ubuntu / Documents / Eigen / src / Core / arch / NEON / PacketMath.h：163：错误：无法将参数'1'的'const float *'转换为'const float32_t *'至'__builtin_neon_sf __vector__ vld1q_f32（const float32_t *）'
/home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h：在函数'typename Eigen :: ei_packet_traits< T> :: type Eigen :: ei_ploadu（const Scalar *）[with Scalar = float]'：
/home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h:166：错误：无法将'const float *'转换为'const float32_t *'for参数'1'到'__builtin_neon_sf __vector__ vld1q_f32（const float32_t *）'
/home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h：在函数'void Eigen :: ei_pstore （Scalar *，const Packet&）[with Scalar = float，Packet = __builtin_neon_sf __vector__]'：
/home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h:169：错误：不能将'float *'转换为'float32_t *'为参数'1'到'void vst1q_f32（float32_t *，__builtin_neon_sf __vector__）'
/ home / ubuntu / Documents / eigen / Eigen / src / Core / arch /NEON/PacketMath.h：在函数'void Eigen :: ei_pstoreu（Scalar *，const Packet&）[with Scalar = float，Packet = __builtin_neon_sf __vector__]'：
/ home / ubuntu / Documents / eigen / Eigen /src/Core/arch/NEON/PacketMath.h:172：错误：无法将参数'1'的'float *'转换为'float32_t *'转换为'void vst1q_f32（float32_t *，__builtin_neon_sf __vector__）'
/ home / ubuntu / Documents / eigen / Eigen / src / Core / arch / NEON / PacketMath.h：在函数'typename Eigen :: ei_unpacket_traits:: type Eigen :: ei_pfirst（const Packet&）[with Packet = __builtin_neon_sf __vector__]'：
/home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h:179：错误：无法将参数'1的'float *'转换为'float32_t *' 'to'void vst1q_f32（float32_t *，__builtin_neon_sf __vector__）'
/home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h：在函数'typename Eigen :: ei_unpacket_traits< T> ; :: type Eigen :: ei_predux（const Packet&）[with Packet = __builtin_neon_sf __vector__]'：
/home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h:216 ：错误：不能将'float *'转换为'float32_t *'为参数'1'到'void vst1_f32（float32_t *，__builtin_neon_sf __vector__）'
/ home / ubuntu / Documents / eigen / arch / NEON / PacketMath.h：在函数'typename Eigen :: ei_unpacket_traits:: type Eigen :: ei_predux_mul（const Packet&）[with Packet = __builtin_neon_sf __vector__]'：
/ home / ubuntu / Documents /eigen/Eigen/src/Core/arch/NEON/PacketMath.h:289：错误：无法将参数'1'的'float *'转换为'float32_t *'至'void vst1_f32（float32_t *，__builtin_neon_sf __vector__）'
/home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h：在函数'typename Eigen :: ei_unpacket_traits< T> :: type Eigen :: ei_predux_min（const Packet& with Packet = __builtin_neon_sf __vector__]'：
/home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h:320：错误：无法将'float *'转换为'float32_t *'将参数'1'改为'void vst1_f32（float32_t *，__builtin_neon_sf __vector__）'
/home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h：在函数'typename Eigen： ：ei_unpacket_traits< T> :: type Eigen :: ei_predux_max（const Packet&）[with packet = __builtin_neon_sf __vector__]'：
/ home / ubuntu / Documents / eigen / Eigen / src / Core / arch / NEON / PacketMath .h：348：错误：无法将参数'1'的'float *'转换为'float32_t *'转换为'void vst1_f32（float32_t *，__builtin_neon_sf __vector__）'
make：*** [main] b $ b ubuntu @ ubuntu-desktop：〜/ Documents / mat_mul $
我使用Code Sourcery工具链时出现的错误
ubuntu @ ubuntu-desktop：〜/ Documents / CodeSourcery_WS / Test_Eigen $ make
/ 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
在main.cpp中包含的文件中：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：致命错误：bits / c ++ config.h：没有这样的文件或目录
编译终止。
make：*** [main]错误1
解决方案看起来像gcc的错误，它真的应该混合float和float32_t没有错误。请检查此。
编辑：这已经在CodeSourcery工具链中修复。这是来自发行说明：
使用float32_t编译器错误。修复了导致
使用arm_neon.h中的
float32_t类型时的编译器错误。
in my project I'm making use of Eigen C++ library for linear algebra and ONLY when I turn on the vectorization flags (mfpu=neon -mfloat-abi=softfp) for ARM NEON, I get compiler errors. I'm not able to understand whats going wrong. Do I need to enable any preprocessor directives for ARM NEON in the Eigen Library?
main.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!!"; }makefile
main: main.cpp g++ -mfpu=neon -mfloat-abi=softfp -I /home/ubuntu/Documents/eigen/ main.cpp -o mainerrors
ubuntu@ubuntu-desktop:~/Documents/mat_mul$ make g++ -mfpu=neon -mfloat-abi=softfp -I /home/ubuntu/Documents/eigen/ main.cpp -o main In file included from /home/ubuntu/Documents/eigen/Eigen/Core:227, from main.cpp:2: /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h: In function ‘typename Eigen::ei_packet_traits<T>::type Eigen::ei_pload(const Scalar*) [with Scalar = float]’: /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h:163: error: cannot convert ‘const float*’ to ‘const float32_t*’ for argument ‘1’ to ‘__builtin_neon_sf __vector__ vld1q_f32(const float32_t*)’ /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h: In function ‘typename Eigen::ei_packet_traits<T>::type Eigen::ei_ploadu(const Scalar*) [with Scalar = float]’: /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h:166: error: cannot convert ‘const float*’ to ‘const float32_t*’ for argument ‘1’ to ‘__builtin_neon_sf __vector__ vld1q_f32(const float32_t*)’ /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h: In function ‘void Eigen::ei_pstore(Scalar*, const Packet&) [with Scalar = float, Packet = __builtin_neon_sf __vector__]’: /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h:169: error: cannot convert ‘float*’ to ‘float32_t*’ for argument ‘1’ to ‘void vst1q_f32(float32_t*, __builtin_neon_sf __vector__)’ /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h: In function ‘void Eigen::ei_pstoreu(Scalar*, const Packet&) [with Scalar = float, Packet = __builtin_neon_sf __vector__]’: /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h:172: error: cannot convert ‘float*’ to ‘float32_t*’ for argument ‘1’ to ‘void vst1q_f32(float32_t*, __builtin_neon_sf __vector__)’ /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h: In function ‘typename Eigen::ei_unpacket_traits<T>::type Eigen::ei_pfirst(const Packet&) [with Packet = __builtin_neon_sf __vector__]’: /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h:179: error: cannot convert ‘float*’ to ‘float32_t*’ for argument ‘1’ to ‘void vst1q_f32(float32_t*, __builtin_neon_sf __vector__)’ /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h: In function ‘typename Eigen::ei_unpacket_traits<T>::type Eigen::ei_predux(const Packet&) [with Packet = __builtin_neon_sf __vector__]’: /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h:216: error: cannot convert ‘float*’ to ‘float32_t*’ for argument ‘1’ to ‘void vst1_f32(float32_t*, __builtin_neon_sf __vector__)’ /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h: In function ‘typename Eigen::ei_unpacket_traits<T>::type Eigen::ei_predux_mul(const Packet&) [with Packet = __builtin_neon_sf __vector__]’: /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h:289: error: cannot convert ‘float*’ to ‘float32_t*’ for argument ‘1’ to ‘void vst1_f32(float32_t*, __builtin_neon_sf __vector__)’ /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h: In function ‘typename Eigen::ei_unpacket_traits<T>::type Eigen::ei_predux_min(const Packet&) [with Packet = __builtin_neon_sf __vector__]’: /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h:320: error: cannot convert ‘float*’ to ‘float32_t*’ for argument ‘1’ to ‘void vst1_f32(float32_t*, __builtin_neon_sf __vector__)’ /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h: In function ‘typename Eigen::ei_unpacket_traits<T>::type Eigen::ei_predux_max(const Packet&) [with Packet = __builtin_neon_sf __vector__]’: /home/ubuntu/Documents/eigen/Eigen/src/Core/arch/NEON/PacketMath.h:348: error: cannot convert ‘float*’ to ‘float32_t*’ for argument ‘1’ to ‘void vst1_f32(float32_t*, __builtin_neon_sf __vector__)’ make: *** [main] Error 1 ubuntu@ubuntu-desktop:~/Documents/mat_mul$
Errors I got when I used Code Sourcery toolchain
ubuntu@ubuntu-desktop:~/Documents/CodeSourcery_WS/Test_Eigen$ make /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
解决方案Looks like gcc bug, it really should mix float and float32_t without errors. Check this out.
Edit: This has been fixed in CodeSourcery toolchain. This is from release notes:
Compiler errors with float32_t. A bug has been fixed that caused compiler errors when using the float32_t type from arm_neon.h.
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