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Makefile: break apart steps in `make clean` 

The `make clean` target consists of a single `rm` call that passes every
generated file, object file, and dependency directory.  This results in
a command line that's around 53,800 characters long.

On Linux, the maximum length of a command line is 131,072 or 262,144
characters, however on Windows the limit is 32,768.

The 53,800 character command simply fails to run on Windows, which is a
problem when the first command that gets run is `make clean`.

Break this target into steps, first removing the output files, then the
object files, then any generated garbage, and then the object depedency
directories.

This fixes `make clean` (and as a result yosys) on Windows.

Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross 2019-10-19 12:36:14 +08:00 committed by Eddie Hung
parent 54763e6882
commit 11c4f998b2
1 changed files with 4 additions and 1 deletions
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5
Makefile
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@ -206,7 +206,10 @@ depend: $(DEP)
clean:
@echo "$(MSG_PREFIX)\`\` Cleaning up..."
$(VERBOSE)rm -rvf $(PROG) lib$(PROG).a $(OBJ) $(GARBAGE) $(OBJ:.o=.d)
$(VERBOSE)rm -rvf $(PROG) lib$(PROG).a
$(VERBOSE)rm -rvf $(OBJ)
$(VERBOSE)rm -rvf $(GARBAGE)
$(VERBOSE)rm -rvf $(OBJ:.o=.d)
tags:
etags `find . -type f -regex '.*\.\(c\|h\)'`