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2013-08-29build: Have `pdf' depend on the PDF image.Ludovic Courtès
* doc.am (DOT_OPTIONS): Remove `-Tpng'. (.dot.pdf): New rule. (pdf-local): Depend on the .pdf.
2013-08-29build: Use `missing' for `dot'.Ludovic Courtès
* configure.ac: Substitute `DOT'. * doc.am (.dot.png, .dot.eps): Use $(DOT).
2013-08-29build: Build docs from the top-level Makefile.Ludovic Courtès
This undoes commit 575ed8d ("doc: Create own Makefile.am in subdirectory."), and fixes a bug whereby "make pdf" or "make ps" wouldn't do anything. * doc/Makefile.am: Remove. * doc.am: New file. Use `-local' rules to build the image. * Makefile.am: Include it. * configure.ac: Use `-Woverride' to avoid undesired overridding of Automake rules.