Make looks for the wrong file

[GAVA Cédric]

Hello

I'm facing a strange issue with automake 1.11.1 :
CONTEXT :
Project directory structure :
../project
        Makefile.am
        Configure.ac
        /src
                /state_machine
        DedicatedSoftware.c

And, in the Makefile.am file, the following line :
bridge_SOURCES  = src/DedicatedSoftware.c

ISSUE :
I moved the DedicatedSoftware.c file into src/state_machine directory, and 
changed my Makefile.am to the following :
bridge_SOURCES  = src/state_machine/DedicatedSoftware.c
        $> make: *** No rule to make target .../src/DedicatedSoftware.c', 
needed by `bridge-DedicatedSoftware.o'.  Stop.
If I rename the file DedicatedSoftwareT.c, and puts 
src/state_machine/DedicatedSoftwareT.c, then make does not complains !?!???

What do I miss ?
Thank you, in advance, for your help
I've put bellow the dump of make -d for debugging informations... :

Best regards
Cedric Gava

ANNEX : DEBUG DUMP (real long path has been replaced by 'project')

      Considering target file `bridge-DedicatedSoftware.o'.
       File `bridge-DedicatedSoftware.o' does not exist.
        Considering target file `src/state_machine/DedicatedSoftware.c'.
         Looking for an implicit rule for 
`src/state_machine/DedicatedSoftware.c'.
         Trying pattern rule with stem `DedicatedSoftware'.
         Trying implicit prerequisite `src/state_machine/DedicatedSoftware.w'.
         Trying pattern rule with stem `DedicatedSoftware.c'.
         Trying implicit prerequisite `src/state_machine/DedicatedSoftware.c,v'.
         Trying pattern rule with stem `DedicatedSoftware.c'.
         Trying implicit prerequisite 
`src/state_machine/RCS/DedicatedSoftware.c,v'.
         Trying pattern rule with stem `DedicatedSoftware.c'.
         Trying implicit prerequisite 
`src/state_machine/RCS/DedicatedSoftware.c'.
         Trying pattern rule with stem `DedicatedSoftware.c'.
         Trying implicit prerequisite `src/state_machine/s.DedicatedSoftware.c'.
         Trying pattern rule with stem `DedicatedSoftware.c'.
         Trying implicit prerequisite 
`src/state_machine/SCCS/s.DedicatedSoftware.c'.
         Trying pattern rule with stem `DedicatedSoftware'.
         Trying implicit prerequisite `src/state_machine/DedicatedSoftware.w'.
         Looking for a rule with intermediate file 
`src/state_machine/DedicatedSoftware.w'.
          Avoiding implicit rule recursion.
          Trying pattern rule with stem `DedicatedSoftware.w'.
          Trying implicit prerequisite 
`src/state_machine/DedicatedSoftware.w,v'.
          Trying pattern rule with stem `DedicatedSoftware.w'.
          Trying implicit prerequisite 
`src/state_machine/RCS/DedicatedSoftware.w,v'.
          Trying pattern rule with stem `DedicatedSoftware.w'.
          Trying implicit prerequisite 
`src/state_machine/RCS/DedicatedSoftware.w'.
          Trying pattern rule with stem `DedicatedSoftware.w'.
          Trying implicit prerequisite 
`src/state_machine/s.DedicatedSoftware.w'.
          Trying pattern rule with stem `DedicatedSoftware.w'.
          Trying implicit prerequisite 
`src/state_machine/SCCS/s.DedicatedSoftware.w'.
         No implicit rule found for `src/state_machine/DedicatedSoftware.c'.
         Finished prerequisites of target file 
`src/state_machine/DedicatedSoftware.c'.
        No need to remake target `src/state_machine/DedicatedSoftware.c'; using 
VPATH name `/project/src/state_machine/DedicatedSoftware.c'.
        Considering target file `/project/src/DedicatedSoftware.c'.
         File `/project/src/DedicatedSoftware.c' does not exist.
         Looking for an implicit rule for `/project/src/DedicatedSoftware.c'.
         Trying pattern rule with stem `DedicatedSoftware'.
         Trying implicit prerequisite `/project/src/DedicatedSoftware.w'.
         Trying pattern rule with stem `DedicatedSoftware.c'.
         Trying implicit prerequisite `/project/src/DedicatedSoftware.c,v'.
         Trying pattern rule with stem `DedicatedSoftware.c'.
         Trying implicit prerequisite `/project/src/RCS/DedicatedSoftware.c,v'.
         Trying pattern rule with stem `DedicatedSoftware.c'.
         Trying implicit prerequisite `/project/src/RCS/DedicatedSoftware.c'.
         Trying pattern rule with stem `DedicatedSoftware.c'.
         Trying implicit prerequisite `/project/src/s.DedicatedSoftware.c'.
         Trying pattern rule with stem `DedicatedSoftware.c'.
         Trying implicit prerequisite `/project/src/SCCS/s.DedicatedSoftware.c'.
         Trying pattern rule with stem `DedicatedSoftware'.
         Trying implicit prerequisite `/project/src/DedicatedSoftware.w'.
         Looking for a rule with intermediate file 
`/project/src/DedicatedSoftware.w'.
          Avoiding implicit rule recursion.
          Trying pattern rule with stem `DedicatedSoftware.w'.
          Trying implicit prerequisite `/project/src/DedicatedSoftware.w,v'.
          Trying pattern rule with stem `DedicatedSoftware.w'.
          Trying implicit prerequisite `/project/src/RCS/DedicatedSoftware.w,v'.
          Trying pattern rule with stem `DedicatedSoftware.w'.
          Trying implicit prerequisite `/project/src/RCS/DedicatedSoftware.w'.
          Trying pattern rule with stem `DedicatedSoftware.w'.
          Trying implicit prerequisite `/project/src/s.DedicatedSoftware.w'.
          Trying pattern rule with stem `DedicatedSoftware.w'.
          Trying implicit prerequisite 
`/project/src/SCCS/s.DedicatedSoftware.w'.
         No implicit rule found for `/project/src/DedicatedSoftware.c'.
         Finished prerequisites of target file 
`/project/src/DedicatedSoftware.c'.
        Must remake target `/project/src/DedicatedSoftware.c'.