Question

我是Linux编程的新手，我正在尝试使用BFD库。这是我正在尝试编译的当前代码：

#include <bfd.h>
#include <stdlib.h>

bfd *abfd;

int main() {
  bfd_init();
  abfd = bfd_openr("/home/mike/Desktop/testFunc/testProg", NULL);
  return 0;
}

我正在使用以下命令行进行编译：

gcc readInfo.c /usr/lib/libbfd.a -o readInfo

我收到以下错误：

gcc readInfo.c /usr/lib/libbfd.a -o readInfo /usr/lib/libbfd.a(elflink.o）：在功能上 elf_link_add_object_symbols': /build/buildd/binutils-2.21.53.20110810/builddir-single/bfd/../../bfd/elflink.c:4605: undefined reference to objalloc_free_block” /build/buildd/binutils-2.21.53.20110810/builddir-single/bfd/../../bfd/elflink.c:4892：对_sch_istable' /usr/lib/libbfd.a(elflink.o): In function bfd_elf_size_dynamic_sections'的未定义引用： /build/buildd/binutils-2.21.53.20110810/builddir-single/bfd/../../bfd/elflink.c:6048：未定义引用lbasename' undefined reference to _ sch_istable'cols2：ld返回1退出状态make： * [all]错误1

还有很多错误，您可以查看here。我确信有一个简单的解释，但它让我感到难过。

总结到目前为止我所做的事情：

安装了Ubuntu的干净版本
已安装的binutils-dev软件包

Answer 1

如果你使用ubuntu install binutils-dev

sudo apt-get install binutils-dev

Answer 2

您是否需要静态链接您的计划？

如果您动态链接它，它会编译并运行而不会出错：

gcc readInfo.c -o readInfo -lbfd

尝试将其静态链接时，我遇到了一个新问题：

$ gcc readInfo.c /usr/lib/libbfd.a /usr/lib/x86_64-linux-gnu/libc.a -o readInfo
/usr/bin/ld.bfd.real: dynamic STT_GNU_IFUNC symbol `strcmp' with pointer equality
    in `/usr/lib/x86_64-linux-gnu/libc.a(strcmp.o)' can not be used when making
    an executable; recompile with -fPIE and relink with -pie
collect2: ld returned 1 exit status
$ gcc -fPIE readInfo.c /usr/lib/libbfd.a /usr/lib/x86_64-linux-gnu/libc.a \
    -o readInfo
/usr/bin/ld.bfd.real: dynamic STT_GNU_IFUNC symbol `strcmp' with pointer equality
    in `/usr/lib/x86_64-linux-gnu/libc.a(strcmp.o)' can not be used when making
    an executable; recompile with -fPIE and relink with -pie
collect2: ld returned 1 exit status
$ gcc -fPIE -pie readInfo.c /usr/lib/libbfd.a /usr/lib/x86_64-linux-gnu/libc.a \
  -o readInfo
/usr/bin/ld.bfd.real: /usr/lib/libbfd.a(opncls.o): relocation R_X86_64_32S
    against `.rodata' can not be used when making a shared object; recompile with
    -fPIC
/usr/lib/libbfd.a: could not read symbols: Bad value
collect2: ld returned 1 exit status
$ gcc -fPIC -fPIE -pie readInfo.c /usr/lib/libbfd.a \
  /usr/lib/x86_64-linux-gnu/libc.a -o readInfo
/usr/bin/ld.bfd.real: /usr/lib/libbfd.a(opncls.o): relocation R_X86_64_32S
    against `.rodata' can not be used when making a shared object; recompile with
    -fPIC
/usr/lib/libbfd.a: could not read symbols: Bad value
collect2: ld returned 1 exit status

Answer 3

gcc -v main.c -o blah /usr/lib64/libbfd.a /usr/lib64/libiberty.a -ldl -lz

看起来libbfd需要来自libiberty，dl和z的功能 - 今天在opensuse 13.1 x86_64上使用类似的琐碎测试应用程序。

在Linux上使用bfd.h编译错误

3 个答案: