Unix Environment Exercises and Answers:
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1. In exercises folder there is a program Proximal Bundle Method for
DC Programming PBDC (file pbdc.tar.gz). Study the code dependences and
correct the Makefile.

Note! The decompression of a gzipped file is done with command
gunzip. That is, type

  gunzip pbdc.tar.gz

To open the tar archive file, you should type

  tar xf pbdc.tar


Tips:
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First line in the makefile should define the executable program, with
listed all the prerequisites (needed object and module files),
followed by a compiler command in the next line. Tab character must be
placed in front of the compiler command.

After defining target (executable file), one should follow with
definitions for the module file (.mod file) and then the object file
of the corresponding module file (.o of the module file). For the .mod
file a prerequisites are corresponding to .o and .f95 files. Tab
character must be placed in front of the compiler command.

Now you can list all other object files with their prerequisites in
any order. When listing an object file which uses module corresponding module
file (.mod) must be specified as the prerequisite.

The order just descriped should always be followed.