Re: [gpsd-dev] scons quirks

[Hal Murray]

I think I've tracked down one piece of the puzzle.  revision.h is the key.

On the rsync-ed to machines, the .git directory gets dropped.
revision.h contains things like:
  #define REVISION "2013-11-15T10:25:15.11"
while on the git-clone-d systems it looks like:
  #define REVISION "release-3.9-807-g4f440cd"

On the non-git world, revision.h gets updated each time you run scons.
In the git world, revision.h doesn't get updated by a second scons.

...
scons: done reading SConscript files.
scons: Building targets ...
Creating 'revision.h'
gcc -o gpsd_json.os -c -D_GNU_SOURCE -Wextra -Wall -Wno-uninitialized 
-Wno-missing-field-initializers -Wcast-align -Wmissing-declarations 
-Wmissing-prototypes -Wstrict-prototypes -Wpointer-arith -Wreturn-type 
-pthread -Wmissing-prototypes -Wmissing-declarations -O2 -fPIC gpsd_json.c
...


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