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z = xz
keys = \
'71C2 CC22 B1C4 6029 27D2 F3AA A7A1 6B4A 2527 436A'
upstream_archive = $(OPK_SOURCE)-$(OPK_SOURCE_VERSION_UPSTREAM).tar.$(z)
upstream_url = http://ftp.gnu.org/pub/gnu/$(OPK_SOURCE)/$(upstream_archive)
source_archive = ../$(OPK_SOURCE)-$(OPK_SOURCE_VERSION_UPSTREAM).orig.tar.$(z)
GNUPGHOME = gnupghome
# TODO: When GnuPG is built with TLS support, delete the second "keyserver" line
# to switch to a non-SKS keyserver. We can't switch yet, because the Web server
# at keys.openpgp.org redirects (HTTP 301) to HTTPS (and enforces it with HSTS).
keyserver = hkps://keys.openpgp.org
keyserver = hkp://pool.sks-keyservers.net
keyring = ../keyring.gpg
cleanup = gpgconf --kill all; rm -Rf '$(GNUPGHOME)'; sleep 5
$(keyring):
gpg --recv-keys $(keys) || { rm -Rf '$@'; exit 1; }
rm -f '$@~'
$(source_archive): $(keyring)
wget -c "$(upstream_url)" "$(upstream_url).sig"
gpg --verify "$(upstream_archive).sig"
mv "$(upstream_archive)" "$(source_archive)"
source:
install -m 0700 -d '$(GNUPGHOME)'
umask 0177; printf 'keyserver $(keyserver)\n' \
1>'$(GNUPGHOME)/dirmngr.conf'
umask 0177; printf 'no-default-keyring\nkeyring $(keyring)\nverbose\n' \
1>'$(GNUPGHOME)/gpg.conf'
GNUPGHOME='$(GNUPGHOME)' $(MAKE) -f ../source.mk "$(source_archive)" \
|| { $(cleanup); exit 1; }
$(cleanup)
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