.. and promptly realized I should be pulling the _Ubuntu_ source package instead.  Arg.
In any case, I tried building the source package, and it fails:

jdyer@Atom:~/Desktop/utils$ ls
acceltest.c  ffcfstress.c  fftest.c       jscal.c   remove-obsolete-files
cvmove       ffmvforce.c   gencodes.c     jstest.c  scancodes.h
evtest.c     ffset.c       inputattach.c  Makefile
jdyer@Atom:~/Desktop/utils$ make
gcc -g -O2 -Wall -I../linux/include    evtest.c   -o evtest
gcc -g -O2 -Wall -I../linux/include    inputattach.c   -o inputattach
inputattach.c: In function ‘logitech_command’:
inputattach.c:95: warning: ignoring return value of ‘write’, declared with attribute warn_unused_result
inputattach.c: In function ‘magellan_init’:
inputattach.c:106: warning: ignoring return value of ‘write’, declared with attribute warn_unused_result
inputattach.c: In function ‘spaceball_waitcmd’:
inputattach.c:137: warning: pointer targets in passing argument 3 of ‘spaceball_waitchar’ differ in signedness
inputattach.c:117: note: expected ‘unsigned char *’ but argument is of type ‘char *’
inputattach.c: In function ‘spaceball_cmd’:
inputattach.c:151: warning: ignoring return value of ‘write’, declared with attribute warn_unused_result
inputattach.c:152: warning: ignoring return value of ‘write’, declared with attribute warn_unused_result
inputattach.c: In function ‘spaceball_init’:
inputattach.c:170: warning: pointer targets in passing argument 3 of ‘spaceball_waitchar’ differ in signedness
inputattach.c:117: note: expected ‘unsigned char *’ but argument is of type ‘char *’
inputattach.c:171: warning: pointer targets in passing argument 3 of ‘spaceball_waitchar’ differ in signedness
inputattach.c:117: note: expected ‘unsigned char *’ but argument is of type ‘char *’
inputattach.c: In function ‘stinger_init’:
inputattach.c:233: warning: pointer targets in initialization differ in signedness
inputattach.c: In function ‘main’:
inputattach.c:442: warning: pointer targets in passing argument 2 of ‘readchar’ differ in signedness
inputattach.c:52: note: expected ‘unsigned char *’ but argument is of type ‘char *’
inputattach.c:465: warning: ignoring return value of ‘read’, declared with attribute warn_unused_result
gcc -g -O2 -Wall -I../linux/include    jstest.c   -o jstest
gcc -g -O2 -Wall -I../linux/include   -c -o jscal.o jscal.c
jscal.c: In function ‘wait_for_event’:
jscal.c:116: warning: ignoring return value of ‘read’, declared with attribute warn_unused_result
gcc -g -O2 -Wall -I../linux/include  -lm jscal.o -o jscal
gcc -g -O2 -Wall -I../linux/include    fftest.c   -o fftest
fftest.c: In function ‘main’:
fftest.c:222: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result
gcc -c -g -O2 -Wall -I../linux/include  ffmvforce.c -o ffmvforce.o `sdl-config --cflags`
/bin/sh: sdl-config: not found
ffmvforce.c:37:17: error: SDL.h: No such file or directory
ffmvforce.c: In function ‘main’:
ffmvforce.c:117: error: ‘SDL_Surface’ undeclared (first use in this function)
ffmvforce.c:117: error: (Each undeclared identifier is reported only once
ffmvforce.c:117: error: for each function it appears in.)
ffmvforce.c:117: error: ‘screen’ undeclared (first use in this function)
ffmvforce.c:120: error: ‘Uint32’ undeclared (first use in this function)
ffmvforce.c:120: error: expected ‘;’ before ‘ticks’
ffmvforce.c:138: error: ‘period’ undeclared (first use in this function)
ffmvforce.c:146: warning: implicit declaration of function ‘SDL_Init’
ffmvforce.c:146: error: ‘SDL_INIT_VIDEO’ undeclared (first use in this function)
ffmvforce.c:147: warning: implicit declaration of function ‘SDL_GetError’
ffmvforce.c:147: warning: format ‘%s’ expects type ‘char *’, but argument 3 has type ‘int’
ffmvforce.c:150: error: ‘SDL_Quit’ undeclared (first use in this function)
ffmvforce.c:151: warning: implicit declaration of function ‘SDL_SetVideoMode’
ffmvforce.c:151: error: ‘SDL_SWSURFACE’ undeclared (first use in this function)
ffmvforce.c:153: warning: format ‘%s’ expects type ‘char *’, but argument 3 has type ‘int’
ffmvforce.c:164: error: ‘ticks’ undeclared (first use in this function)
ffmvforce.c:164: warning: implicit declaration of function ‘SDL_GetTicks’
ffmvforce.c:167: error: ‘SDL_Event’ undeclared (first use in this function)
ffmvforce.c:167: error: expected ‘;’ before ‘event’
ffmvforce.c:168: warning: implicit declaration of function ‘SDL_WaitEvent’
ffmvforce.c:168: error: ‘event’ undeclared (first use in this function)
ffmvforce.c:171: error: ‘SDL_QUIT’ undeclared (first use in this function)
ffmvforce.c:175: error: ‘SDL_MOUSEMOTION’ undeclared (first use in this function)
make: *** [ffmvforce.o] Error 1
jdyer@Atom:~/Desktop/utils$ ls
acceltest.c  ffcfstress.c  fftest.c       jscal    jstest.c
cvmove       ffmvforce.c   gencodes.c     jscal.c  Makefile
evtest       ffset.c       inputattach    jscal.o  remove-obsolete-files
evtest.c     fftest        inputattach.c  jstest   scancodes.h
jdyer@Atom:~/Desktop/utils$