获取已安装程序的编译信息 [英] Get compilation info of an installed program

问题描述

我需要获取有关用于生成已安装程序的C编译器的信息。我猜测rt或lib可以报告该信息，但是没有具体的信息。并不是说该程序将安装在 / usr /...或类似的位置，因此将无权访问构建目录来获取相关信息。

解决方案

表现良好的程序应理解-version 参数。 / p>

打包程序（即使用 dpkg -i 或 apt-get install安装的程序 .deb 软件包中的code>也知道其软件包版本和来源。

您可能会尝试在二进制可执行文件上使用 strings 。但是，此类元数据（大约是用于构建程序的C编译器的版本）可能已被剥离（例如，通过 strip 命令）。

如果您正在开发程序（即其C源代码）并且可以对其进行更改，则可以考虑添加类似的内容

  timestamp.c：Makefile 
 echo'const char timestamp [] ='> $ @ 
日期+在％c上使用$（shell $（CC）--version）构建；’>> $ @ 
 
您的程序：$（OBJECTS）timestamp.o 
 $（LINK.c）$（LDFLAGS）$< -o $ @ $（LDLIBES）
 $（RM）timestamp.c 
  

Makefile （细节可能是错误的，但您会明白的）

I need to obtain the information on the C-compiler used to build an installed program. I am guessing a rt or a lib can report that, but nothing concrete. Not that the program would be installed in /usr/... or a similar place, and hence would not have access to the build directory to get the relevant info.

解决方案

Well behaved programs should understand the --version argument.

Packaged programs (i.e. those installed with dpkg -i or apt-get install of a .deb package on Debian, etc...) also know their package version and source.

You might try to use strings on the binary executable. However, such meta-data (about the version of the C compiler used to build the program) might have been stripped (e.g. by the strip command).

If you are developing the program (i.e. its C source code) and can change it, you might consider adding something like

timestamp.c: Makefile
      echo 'const char timestamp[]=' > $@
      date +'"built with $(shell $(CC) --version) on %c";' >> $@

yourprogram: $(OBJECTS) timestamp.o
      $(LINK.c) $(LDFLAGS) $< -o $@ $(LDLIBES)
      $(RM) timestamp.c

in your Makefile (details could be wrong, but you get the idea)

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