For DITA Open Tookit 2.1.0.
IF I create a new output as follows, THEN the command runs to completion:
dita -v -f html5 -i samples/sequence.ditamap -o OUTPUT/HTML5
DITA-OT 2.10 creates an initial OUTPUT/[outputType] sub-folder structure, builds the output, and runs to completion without error.
IF I create a new output as follows, THEN the command fails to run and returns an error:
dita -v -l OUTPUT/HTML5/HTML5.log -f html5 -i samples/sequence.ditamap -o OUTPUT/HTML5
Error: Cannot write on the specified log file.
This problem exists for all DITA-OT 2.1 output types. This example just happens to be HTML5.
The circumvention is to create the output type's folder hierarchy before running the command. Among other things, I can simply run the first command followed by the second command — no problem the second time 'round. The point being that IF the folder hierarchy is in place, even if a given output type's folder is empty, THEN DITA-OT 2.1 can create the new output AND a log file. But if the destination folder does NOT exist, DITA-OT 2.1 is unable to instantiate the log file and just gives up on the build.
I've tried moving the -l OUTPUT/HTML5/HTML5.log to the end of the command line it didn't help.
I realize I can create a script file (batch file in Windows) that creates the folder hierarchy before running the second command, but I'd rather understand why DITA-OT 2.1 CAN create a new output folder hierarchy and output but CANNOT do that AND create a log file at the same time.
I'm still new enough to the DITA-OT's build system (Ant + XML) that I don't have a clear idea how to isolate the problem. So I'm hoping someone will know exactly where to look. Or better yet, explain how one might debug the DITA-OT 2.1 build system's "plumbing" so that one can observe this and similar failures in action and remedy them.