Clarify shell variables in cross compiling documentation #78

	name: Build+Test

	on: [ push, pull_request ]

	jobs:
	buildtest:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2

	- name: Install stuff
	run: \|
	sudo apt-get -qqy update
	sudo apt-get -qqy install wget ca-certificates build-essential bison flex automake autoconf libtool pkg-config

	- name: Set up Go
	uses: actions/setup-go@v2
	with:
	go-version: 1.16

	- name: Show info about build environment
	run: \|
	pwd
	env
	cat /etc/debian_version
	go version
	gcc --version

	- name: Build YARA from source
	run: \|
	YARA_VERSION=4.3.0
	wget --no-verbose -O- https://github.com/VirusTotal/yara/archive/v${YARA_VERSION}.tar.gz \| tar -C .. -xzf -
	( cd ../yara-${YARA_VERSION} && ./bootstrap.sh )
	mkdir -p ../yara-build
	( cd ../yara-build && \
	../yara-${YARA_VERSION}/configure --disable-shared --prefix=${HOME}/prefix )
	make -C ../yara-build install
	find ${HOME}/prefix

	- name: Build/Test
	run: \|
	export PKG_CONFIG_PATH=${HOME}/prefix/lib/pkgconfig
	go test -v -tags yara_static ./...

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