Question

我在glibc中构建了一个新的~/glibc/git/glibc/build。我知道我可以在嵌入到它的路径后使用它来启动程序，并且像这样使用相应的加载器路径：

$ gcc main.c -o main -Wl,--rpath=$HOME/glibc/git/glibc/build -Wl,--dynamic-linker=$HOME/glibc/git/glibc/build/elf/ld-linux-x86-64.so.2

main将由新的libc启动：

$ objdump -p main
  RPATH                /home/user/glibc/git/glibc/build

和新的装载机：

$ LD_TRACE_LOADED_OBJECTS=1 ./main                                                    
        linux-vdso.so.1 (0x00007fff92df2000)
        libc.so.6 => /home/user/glibc/git/glibc/build/libc.so.6 (0x00007f1097055000)
        /home/user/glibc/git/glibc/build/elf/ld-linux-x86-64.so.2 (0x00007f10973f5000)

我向glibc安装了新的~/glibc-destdir1版本2.22。我在/lib64安装了2.17。我想使用仅在2.22中提供的一些pthread函数，因此我尝试将gcc指向使用新的libpthread.so，但它不起作用。此命令失败：

$ LIBRARY_PATH=$HOME/glibc-destdir1/usr/local/lib gcc -std=c99 -Wl,--rpath=$HOME/glibc/git/glibc/build -Wl,--dynamic-linker=$HOME/glibc/git/glibc/build/elf/ld-linux-x86-64.so.2  thread.c -o thread -pthread
/tmp/ccSxKt9O.o: In function `thr':
thread.c:(.text+0x2f): undefined reference to `pthread_getattr_default_np'
/tmp/ccSxKt9O.o: In function `run_threads':
thread.c:(.text+0x153): undefined reference to `pthread_setattr_default_np'
/tmp/ccSxKt9O.o: In function `verify_affinity_result':
thread.c:(.text+0x4eb): undefined reference to `CPU_ISSET'
/tmp/ccSxKt9O.o: In function `do_affinity_test':
thread.c:(.text+0x571): undefined reference to `CPU_ZERO'
thread.c:(.text+0x58a): undefined reference to `CPU_SET'
/tmp/ccSxKt9O.o: In function `do_guardsize_test':
thread.c:(.text+0xa20): undefined reference to `pthread_getattr_default_np'
collect2: error: ld returned 1 exit status

这甚至可以在这里使用新的pthread和libc吗？我知道一个旧的libc仍然用于构建这个程序，libc作为一个整体包含很多包，它们都必须匹配，但也许有办法做我想要的或我的不足之处是不正确的？

Answer 1

我修复了它，结果发现新libc安装中的/usr/local/lib/libpthread.so.0指向不存在的libpthread.so.0。我只是将其修改为指向同一目录中的class Program { static void Main(string[] args) { Console.WriteLine("hello World"); System.Uri url = new System.Uri("http://192.168.1.12:81/WebService/BIITAlumni.svc/UploadImage"); string filePath = @"F:\temp\Desert.jpg"; HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); request.Accept = "application/octet-stream"; request.Method = "POST"; request.ContentType = "image/jpeg"; using (Stream fileStream = File.OpenRead(filePath)) using (Stream requestStream = request.GetRequestStream()) { int bufferSize = 1024; byte[] buffer = new byte[bufferSize]; int byteCount = 0; while ((byteCount = fileStream.Read(buffer, 0, bufferSize)) > 0) { requestStream.Write(buffer, 0, byteCount); } } string result; using (WebResponse response = request.GetResponse()) using (StreamReader reader = new StreamReader(response.GetResponseStream())) { result = reader.ReadToEnd(); } Console.WriteLine(result); } }。

使用新安装的glibc中的库和--rpath

1 个答案: