build: mv scan.c when building dist.

Revert change to copy scan.c when building the distribution
archive. Move it instead. This satisfies automake's notions of what
should be clean and ensures that the distribution archive contains a
just-built copy of scan.c.

Fixes #186

diff --git a/src/Makefile.am b/src/Makefile.am
index b5827ab993b1a3c18c0e5ee57370b6278d0672ee..c24fccae179ea33e32775d9ce942e2b3945f8722 100644 (file)
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -94,7 +94,7 @@ endif
 dist-hook: scan.l flex$(EXEEXT)
        chmod u+w $(distdir)/scan.c && \
        ./flex$(EXEEXT) -o scan.c $< && \
-       cp scan.c $(distdir)
+       mv scan.c $(distdir)
 
 # make needs to be told to make parse.h so that parallelized runs will
 # not fail.