#!/bin/sh

# Print a description of the build environment.  This is here mainly
# for the use of the buildbot cluster, allowing developers to see the
# build environment on machines they can't login on.  It also provides
# a history in the build logs that might be useful in catching
# regressions.
# 
# This script should *only* report basic information about the build
# environment, and only that necessary to reproduce the build
# environment.
#
# FIXME: Document meaning of script's exit status, if any.
# It jumps through hoops with `|| true' despite not using `set -e'.

offset () {
    sed -e '/./s/^/    /' "$@"
}

header () {
    echo
    echo "$@"
    echo
}

# os-release is the new s*stemd standard.  Then it's the more unique
# ones with redhat-release bringing up the rear because other platforms
# also use that to placate broken logic that use its prescence as a
# use-RPM test.
for f in \
    /etc/os-release /etc/arch-release /etc/debian_version \
    /etc/fedora-release /etc/gentoo-release /etc/redhat-release \
    /etc/lsb-release \
    ; do
    test -f $f || continue
    header $f
    offset $f
    break
done

os=`uname`

for i in a m p r s v; do
    eval uname_${i}=\'$(uname -${i} 2>/dev/null)\'
done

header Shell Variables:
set | sort -d -t= | offset

case ${os} in

  Darwin)
	header Compilers:
	cc -v 2>&1 | offset
	echo
	lex --version | offset
	echo
	yacc --version | offset
	;;

  FreeBSD)
	header Compilers:
	cc -v 2>&1 | offset

  	header Installed packages:
	(pkg info 2>/dev/null | offset) || true
	(pkg_info 2>/dev/null | offset) || true
	;;
esac