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go/src/cmd/gc/mkbuiltin
Russ Cox a2cbc2998d don't write cmp's output to the c file.
cope better with p4 not found.

R=r
DELTA=3  (0 added, 0 deleted, 3 changed)
OCL=26877
CL=26879
2009-03-30 00:12:56 -07:00

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#!/bin/sh
# Copyright 2009 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
set -e
gcc -o mkbuiltin1 mkbuiltin1.c
6g sys.go
6g unsafe.go
rm -f _builtin.c
./mkbuiltin1 sys >_builtin.c
./mkbuiltin1 unsafe >>_builtin.c
# If _builtin.c has changed vs builtin.c.boot,
# check in the new change if being run by
# one of the people who tends to work on
# the compiler. This makes sure that changes
# don't get forgotten, without causing problems
# in end user Go repositories.
case "$USER" in
ken | r | rsc)
if ! cmp _builtin.c builtin.c.boot >/dev/null 2>/dev/null
then
PATH=$PATH:/usr/local/bin # find p4 on OS X
p4 open builtin.c.boot >/dev/null 2>/dev/null || true # if p4 is missing, so be it
cp _builtin.c builtin.c.boot
fi
esac
cat _builtin.c
rm -f _builtin.c