# Copyright 2015-2016 Luke Shumaker
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

golang.Q ?= @
golang.FLAGS ?=

_golang.cgo_variables = CGO_ENABLED CGO_CFLAGS CGO_CPPFLAGS CGO_CXXFLAGS CGO_LDFLAGS CC CXX
$(foreach v,$(_golang.cgo_variables),$(eval $v ?=))
export $(_golang.cgo_variables)

_golang.src_cmd = find -L $1/src -name '.*' -prune -o \( -type f \( -false $(foreach e,go c s S cc cpp cxx h hh hpp hxx,-o -name '*.$e') \) -o -type d \) -print
golang.src = $1/src $(shell $(_golang.src_cmd) 2>/dev/null)
golang.var = $(addprefix $(var),$(_golang.cgo_variables))

define golang.install
	GOPATH='$(abspath $1)' go install $(golang.FLAGS) $2
	$(golang.Q)true $(foreach e,$(notdir $2), && test -f $1/bin/$e -a -x $1/bin/$e && touch $1/bin/$e)
endef