If it won't be simple, it simply won't be. [Hire me, source code] by Miki Tebeka, CEO, 353Solutions

Tuesday, August 22, 2006

SCons

SCons is a great make replacement written in Python. It offers the following goodies (and many more):

  • Cross platform. Same script will compile your sources for Linux or Windows or ...

  • Support many tools out of the box (such as gcc/VC/java/tar ...)

  • Calculate if a file has change by digital signature
  • (and not by time stamp)
  • Automatically cleans after itself (no more make clean)

Scons Makefile is called SConstruct, here is a simple one:

Program("hw", ["hw.c"])


Which tells scons to build an executable called hw from the source file hw.c

Calling scons on Linux will produce:

[15:10] /tmp/hw $scons
scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
gcc -o hw.o -c hw.c
gcc -o hw hw.o
scons: done building targets.
[15:10]


and on Windows it finds VC and invokes it:

C:\Temp\hw>scons
scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
cl /nologo /c hw.c /Fohw.obj
hw.c
link /nologo /OUT:hw.exe hw.obj
scons: done building targets.
C:\Temp\hw>


Cleaning is simple as well:

[15:19] /tmp/hw $scons -c
scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Cleaning targets ...
Removed hw.o
Removed hw
scons: done cleaning targets.
[15:19] /tmp/hw $


All of this in one line of SConstruct.

(Shameless plug: See here for a longer article on the subject)
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