hcl/go/Makefile.am

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AUTOMAKE_OPTIONS = nostdinc
## the attempt to compose a proper procedure using a regular compiler failed.
## e.g ./configure GOC=opt/go/pkg/tool/linux_amd64/
## while go.m4 is included in autoconf 2.71, the support for the go language
## is very limited and the go language itself is pursuing the module based builder.
##
## the following is to trick autoconf/automake as if it's building go files with
## a real compiler whereas the actual building is done thru `go build`
bin_PROGRAMS = hclgo
hclgo_SOURCES = \
pkg/hcl.go \
pkg/cb.go \
pkg/inst.go \
main.go \
go.mod
hclgo_DEPENDENCIES = hclgo.bin
## let the linker to move hclgo.bin to the actual target
hclgo_LINK = mv -f hclgo.bin hclgo$(EXEEXT) || echo "FAILED TO LINK"
hclgo.bin:
cp -pf $(srcdir)/go.mod $(builddir)/go.mod >/dev/null 2>&1 || true
chmod u+w $(builddir)/go.mod ## with `make distcheck`, the echo's redirection to the file fails without this permission change
sed -ri "/^[[:space:]]*replace[[:space:]]+cfg[[:space:]]*=>/d" $(builddir)/go.mod
echo -e "\nreplace cfg => $(abs_builddir)/cfg" >> $(builddir)/go.mod
[ -f $(srcdir)/go.sum ] && cp -pf $(srcdir)/go.sum $(builddir)/go.sum >/dev/null 2>&1 || true
go build -C $(srcdir) -x -o $(abs_builddir)/hclgo.bin -modfile $(abs_builddir)/go.mod
go clean -C $(srcdir) -x -modfile $(abs_builddir)/go.mod
## the go to o recipe is fake to deceive make
.go.o:
echo $< > $@
.mod.o:
echo $< > $@
clean-local:
rm -rf $(abs_builddir)/go.mod $(abs_builddir)/go.sum