GCC:在Windows上编译OpenCL主机

Question

我只想尝试在Windows下使用OpenCL.

摘要:我尝试编译时(使用命令)出现 " undefined reference to"错误gcc my.o -o my.exe -L "C:\Program Files (x86)\AMD APP\lib\x86_64" -l OpenCL.

---

我的守则

#include <CL/cl.h>
#include <stdio.h>

int main(void) {   
    cl_platform_id platform;
    int err;

    err = clGetPlatformIDs(1, &platform, NULL);
    if(err < 0) {
        perror("There's No Platform!");
        exit(1);
    }

    /* Some more code... */

    system("PAUSE");
}

Makefile文件

all: addition

addition:
    gcc -c -I "C:\Program Files (x86)\AMD APP\include" my.c -o my.o
    gcc my.o -o my.exe -L "C:\Program Files (x86)\AMD APP\lib\x86_64" -l OpenCL

二手程序

• MinGW的的 gcc
• Visual Studio的 nmake
• AMD的OpenCL™APP SDK(我从那里获取了OpenCL库和CL.h文件)

APP SDK文件夹的结构

%>tree /F "C:\Program Files (x86)\AMD APP\lib\x86_64"
Auflistung der Ordnerpfade
Volumeseriennummer : D2DC-D765
C:\PROGRAM FILES (X86)\AMD APP\LIB\X86_64
    libOpenCL.a
    OpenCL.lib
    OpenVideo64.lib

Es sind keine Unterordner vorhanden


%>tree /F "C:\Program Files (x86)\AMD APP\include"
Auflistung der Ordnerpfade
Volumeseriennummer : D2DC-D765
C:\PROGRAM FILES (X86)\AMD APP\INCLUDE
????CAL
?       cal.h
?       calcl.h
?       cal_ext.h
?       cal_ext_counter.h
?       cal_ext_d3d10.h
?       cal_ext_d3d9.h
?
????CL
?       cl.h
?       cl.hpp
?       cl_d3d10.h
?       cl_ext.h
?       cl_gl.h
?       cl_gl_ext.h
?       cl_platform.h
?       opencl.h
?
????OpenVideo
        OpenVideo.h
        OVDecode.h
        OVDecodeTypes.h
        OVEncode.h
        OVEncodeTypes.h

错误信息

        gcc addition.o -o addition.exe -L "C:\Program Files (x86)\AMD APP\lib\x86_64" -l OpenCL
addition.o:addition.c:(.text+0x2d): undefined reference to `clGetPlatformIDs@12'
addition.o:addition.c:(.text+0x83): undefined reference to `clGetDeviceIDs@24'
addition.o:addition.c:(.text+0xc2): undefined reference to `clGetDeviceIDs@24'
collect2: ld returned 1 exit status
NMAKE : fatal error U1077: "C:\prog-x86\MinGW\bin\gcc.EXE": Rückgabe-Code "0x1"
Stop.

我的问题

我的问题很简单:

• 为什么我的代码不能编译它的预期？
• 我该怎么做才能摆脱这个问题？

谢谢.

---

更新:删除 @codaddict的答案中描述的空格后的错误消息.

(生成文件)

all: addition

addition:
  gcc -c -I "C:\prog-x86\AMD-APP\include" addition.c -o addition.o
  gcc addition.o -o addition.exe -LC:\prog-x86\AMD-APP\lib\x86_64 -lOpenCL

(Shelldata)

%>nmake

Microsoft (R) Program Maintenance Utility, Version 11.00.50727.1
Copyright (C) Microsoft Corporation. Alle Rechte vorbehalten.

        gcc -c -I "C:\Program Files (x86)\AMD APP\include" addition.c -o addition.o
addition.c: In function 'main':
addition.c:14:9: warning: incompatible implicit declaration of built-in function 'exit' [enabled by d
efault]
addition.c:23:9: warning: incompatible implicit declaration of built-in function 'exit' [enabled by d
efault]
        gcc addition.o -o addition.exe -LC:\prog-x86\AMD-APP\lib\x86_64 -lOpenCL
addition.o:addition.c:(.text+0x2d): undefined reference to `clGetPlatformIDs@12'
addition.o:addition.c:(.text+0x83): undefined reference to `clGetDeviceIDs@24'
addition.o:addition.c:(.text+0xc2): undefined reference to `clGetDeviceIDs@24'
collect2: ld returned 1 exit status
NMAKE : fatal error U1077: "C:\prog-x86\MinGW\bin\gcc.EXE": Rückgabe-Code "0x1"
Stop.

%>

Answer 1

默认的MinGW发行版仅提供用于构建x86应用程序的工具.您无法链接到OpenCL库的x64版本.因此,您必须使用MinGW-w64或使用x86版本(将库路径更改为APP SDK的x86子文件夹).