Chapter 7, Problem 7.13HW

A.

Explanation of Solution

Object files in the versions in “libc.a” and “libm.a”:

For “libm.a”:

• The “libm.a” means “C” math library.
• First user needs to find the “libm.a” path using below command:

Command: whereis libm.a

• After entering the above command, the following output will be displayed.

libm: /usr/lib/libm.so /usr/lib64/libm.so

• Now find the number of object files in “libm.a” using

ar t /usr/lib64/libm...

B.

Explanation of Solution

Difference between executable code in “gcc -Og –g” and “gcc -Og”:

When compiling code with “gcc -Og –g” and “gcc -Og”, the result will be same.

Example:

The example for compiling code with “gcc -Og –g” and “gcc -Og” is shown below:

sample...

C.

Explanation of Solution

Shared libraries in the GCC driver on given system:

• Object files that are dynamically loaded and linked into an application.
  • That is either in load time or run time.
  • It is also called as dynamic link libraries (DLL) that is format of “.so” files.
• Dynamic linking can happen when executable is first loaded and run.
  • The libraries are controlled automatically by the dynamic linker in Linux that is using “ld-linux.so”.
  • In general, the standard “C” library are dynamically linked by using “libc.so”.

Example:

The example for shared libraries in the GCC driver on given system is shown below:

Sample...