调试 – Golang：无法让gdb使用C库为Go程序工作

发布时间：2020-12-16 09:25:21 所属栏目：大数据来源：网络整理

导读：平台是Mac OSX Mavericks,我从ports和 signed it安装了gdb.对于简单的程序,它工作得非常好,但是一旦我尝试使用C库的程序就无法加载符号.例如,如果我从Go GLFW绑定尝试FSAA示例,我会得到以下输出： ~/g/s/g/g/e/g/fsaa ggdb mainGNU gdb (GDB) 7.6Copyright (

平台是Mac OSX Mavericks,我从ports和 signed it安装了gdb.对于简单的程序,它工作得非常好,但是一旦我尝试使用C库的程序就无法加载符号.例如,如果我从Go GLFW绑定尝试FSAA示例,我会得到以下输出：

~/g/s/g/g/e/g/fsaa > ggdb main
GNU gdb (GDB) 7.6
Copyright (C) 2013 Free Software Foundation,Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY,to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin13.0.0".
For bug reporting instructions,please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /Users/nils/gocode/src/github.com/go-gl/examples/glfw/fsaa/main...
warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/gl/_obj/attriblocation.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/gl/_obj/buffer.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/gl/_obj/color.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/gl/_obj/framebuffer.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/gl/_obj/gl.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/gl/_obj/matrix.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/gl/_obj/object.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/gl/_obj/program.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/gl/_obj/renderbuffer.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/gl/_obj/shader.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/gl/_obj/texture.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/gl/_obj/transformfeedback.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/gl/_obj/uniformlocation.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/gl/_obj/vertex.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/gl/_obj/vertexarray.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/glu/_obj/_cgo_export.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/glu/_obj/callback.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/glu/_obj/callback.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/glu/_obj/glu.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build184019101/github.com/go-gl/glu/_obj/tesselator.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build432883021/runtime/cgo/_obj/gcc_amd64.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build432883021/runtime/cgo/_obj/gcc_darwin_amd64.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build432883021/runtime/cgo/_obj/gcc_setenv.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build432883021/runtime/cgo/_obj/gcc_util.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build883630526/github.com/go-gl/glfw/_obj/_cgo_export.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build883630526/github.com/go-gl/glfw/_obj/callback.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build883630526/github.com/go-gl/glfw/_obj/callback.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build883630526/github.com/go-gl/glfw/_obj/glfw.cgo2.o': can't open to read symbols: No such file or directory.

warning: `/var/folders/rp/jyw8rd7j4hn10vyk5yjyfvw80000gn/T/go-build883630526/github.com/go-gl/glfw/_obj/image.cgo2.o': can't open to read symbols: No such file or directory.
(no debugging symbols found)...done.
(gdb) list
No symbol table is loaded.  Use the "file" command.
(gdb)

我从后备箱拿到了我的版本,go版本说：

go version devel +f9af8b83c78c Fri Oct 25 23:00:22 2013 +0300 darwin/amd64

GDB版本是7.6.我不想介入C库,我只想调试我的Go代码.有任何想法吗？

解决方法

您遇到了 issue 5221.相关问题是 this one.

对于ELF文件,此问题已得到部分修复,但对于Mach格式仍保持打开状态
你正在使用.所以我想你必须等待1.3或者提示中的相应修复
解决这个问题.

基本上问题是您用于编译的.c文件的链接器不会提取
来自对象(.o)文件的调试信息,但引用它们.因为他们被删除后
构建过程中,gdb无法读取它们.

作为一种解决方法,您可能会尝试为go-glfw运行go build -work以便构建目录未被删除,目标文件仍然可访问.

（编辑：李大同）

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