Makefile.requirements

# -*- mode: makefile-gmake; -*-

SCANDEPS=scandeps-static.pl --no-core --no-include-require

define requirements_check =
use JSON::PP;

my $requirements = JSON::PP->new->decode(<>);
my @modules;

my $template = 'ads_PERL_MODULE([%s], [], [%s])';

for (sort keys %{$requirements} ) {
  my $version = $requirements->{$_};
  if ($version eq 'undef' || $ENV{NO_VERSION} ) {
    $version = '';
  }

  push @modules, sprintf $template, $_, $version;
}

my $module_list = join "\n  ", @modules;

print {*STDOUT} <<"END_OF_MACRO";
AC_DEFUN([AX_REQUIREMENTS_CHECK],[
  $module_list
])
END_OF_MACRO

endef

export s_requirements_check = $(value requirements_check)

autotools/ax_requirements_check.m4: requirements.json
	@perl -0 -e "$$s_requirements_check" $< > $@

define remove_provided =
use JSON::PP;
use File::Find;

my @provided;

my $path = 'src/main/perl/lib';

find(sub {
  return if $File::Find::name !~/[.]p[ml][.]in$/;
  push @provided, $File::Find::name, undef;
 },
 $path);

my %provided = @provided;

my $content = <>;
my %requirements = eval "($content)";

for my $module (keys %requirements) {
  my $module_path = $module;

  $module_path =~s/::/\//xsmg;
  $module_path = "$path/$module_path.pm.in";

  next if ! exists $provided{$module_path};

  delete $requirements{$module};
}

delete $requirements{perl};

print JSON::PP->new->pretty->encode(\%requirements);

endef

export s_remove_provided = $(value remove_provided)

requirements.json: requirements
	@perl -0 -e "$$s_remove_provided" $< > $@

requirements:
	@requirements=$$(mktemp); \
	for dir in perl/lib perl/bin; do \
	  for a in $$(find src/main/$$dir  -name '*.p[lm].in' 2>/dev/null || true); do \
	   $(SCANDEPS) $$a >>$$requirements; \
	  done; \
	done; \
	sort -u $$requirements > $@; \
	rm $$requirements

CLEANFILES = \
    requirements \
    requirement.json \
    autotools/ax_requirements_check.m4

clean:
	rm -f $(CLEANFILES)