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CS240 Dick Steflik. Software Development. Make. “make” is a software engineering tool for managing and maintaining computer programs Help minimize the life cycle cost of developing and maintaining computer software Descriptor file Name: “makefile” // POT (Plain Old Text) ‏

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slide2
Make
  • “make” is a software engineering tool for managing and maintaining computer programs
    • Help minimize the life cycle cost of developing and maintaining computer software
  • Descriptor file
    • Name: “makefile” // POT (Plain Old Text)‏
    • Defines job steps and what the dependencies for that job step are .
      • Also the actual command for accomplishing that job step
makefile descriptor file
makefile descriptor file
  • Made up of :
    • Macro definitions
      • For doing text substitutions
      • $(name) – to invoke
    • Comments (start with a # character
    • Dependency rule:
      • Target (one or more) : dependencies (zero or more) ;
        • Name of the file to be created
        • : (reqd character)‏
        • Dependencies – space delimited list of files reqd for this step
      • One or more commands (must start with a tab character)‏
sample makefile
Sample makefile

prog.exe : prog.c bag.o bag.c

gcc prog.c bag.o -oprog.exe

bag.o : bag.c bag.h

gcc bag.c -c

using make
Using make
  • In the directory where your files are place the descriptor file with the name makefile
    • No file extension
  • At the command prompt enter make
    • make will go through the descriptor file checking dependencies, insuring that the most recent files are included and any intermediate files are recompiled if their time/date stamps are more recent than the current time/date stamps on the dependent files
version control systems
Version Control Systems
  • Used on multi programmer projects to insure that developers don\'t accidentally destroy each other\'s changes
  • Like a library: each user has to check files in and out, systems prevents one person from saving their changes to a file on top of another person\'s changes
    • System enforces safe controls
    • Changes are saves as a sequence of add, delets and modifications to a base file, not as complete files
slide7
CVS
  • Concurrent Versioning System
  • Oldest of the version control systems
    • Open Source
  • Client-server architecture
    • Originally developed for UNIX
      • Ported to Windows NT
  • Each time a file is checked in, user is required to enter a description of what was done
  • Commandline and GUI based client programs are available.
visual sourcesafe
Visual SourceSafe
  • Originally developed by One Tree Software
    • Original name was Delta
  • Acquired by Microsoft and rebranded as Visual SourceSafe (1994)‏
  • Integrates with most Microsoft software development products
  • Not Client Server based
subversion
Subversion
  • Open Source version control system
  • Circa 2000, goal is to be the preferred successor to CVS
  • Widely used in the Open Source community for version control on projects like Apache, KDE, Gnome, gcc, python, ruby, Mono...
  • Client-server architecture
  • Commandline and GUI clients available for most OS environments.
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