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#!/usr/bin/env python
# Create a symlink build tree like the old X11 project "lndir" program.
#
# Reason for this is simple: synthesizing the Alpha RTL code takes a
# looong time, so we don't want to do it unnecessarily, but we also
# don't want to include all of the intermediate files from the
# synthesis in the source tarball. So we symlink a shadow build tree
# off to the side, do the synthesis there.
#
# We could construct this symlink tree by hand, but that's fragile, so
# we'd probably write a script to do it anyway, so we might as well
# just use the script to build the shadow tree and have done with it.
import os
source_root = "source"
build_root = "build"
os.mkdir(build_root)
for source_head, dirs, files in os.walk(source_root):
build_head = build_root + source_head[len(source_root):]
for dn in dirs:
d = os.path.join(build_head, dn)
os.mkdir(d)
for fn in files:
if fn == ".git":
continue
d = os.path.join(build_head, fn)
s = os.path.join(source_head, fn)
s = os.path.abspath(s)
s = os.path.relpath(s, build_head)
os.symlink(s, d)
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