#-*- Makefile -*-
#
# ${R_HOME}/tests/Examples/Makefile.install

## need MAKE, ECHO*

top_builddir = ../..

include $(top_builddir)/etc$(R_ARCH)/Makeconf

R_EXE = $(top_builddir)/bin/R --slave --vanilla

## principle is that we can run all the examples in a package
## starting with just that package and 'datasets'
## R = R_DEFAULT_PACKAGES=datasets $(top_builddir)/bin/R --vanilla
R = $(top_builddir)/bin/R --vanilla

EX_IN_BASE = $(R_PKGS_BASE:=-Ex.R)
EX_OUT_BASE = $(EX_IN_BASE:.R=.Rout)

EX_IN_RECOMMENDED = $(R_PKGS_RECOMMENDED:=-Ex.R)
EX_OUT_RECOMMENDED = $(EX_IN_RECOMMENDED:.R=.Rout)

RDIFF = $(top_builddir)/bin/R CMD Rdiff
RVAL_IF_DIFF = 0

.SUFFIXES:
.SUFFIXES: .R .Rout

all: test-Examples 

test-Examples: test-Examples-Base
test-Examples-Base:
	@$(MAKE) $(EX_OUT_BASE)

test-Examples-Recommended:
	@$(MAKE) $(EX_OUT_RECOMMENDED)

R:
	@cd $(top_builddir) && $(MAKE) R

.R.Rout: FORCE
	@if test -f $@; then mv $@ $@.prev; fi
	@$(ECHO) $(ECHO_N) "running code in '$<' ...$(ECHO_C)"
	@$(R) < $< > $@ 2>&1 || (mv $@ $@.fail && exit 1)
	@$(ECHO) "$(ECHO_T) OK"
	@if test -f $@.prev; then \
	  mv $@ $@.fail; \
	  $(ECHO) $(ECHO_N) "comparing '$@' to '$@.prev' ...$(ECHO_C)"; \
	  $(RDIFF) $@.fail $@.prev $(RVAL_IF_DIFF) || exit 1; \
	  mv $@.fail $@; \
	  $(ECHO) "$(ECHO_T) OK"; \
	fi

$(EX_IN_BASE):
	@(pkg=`basename $@ -Ex.R`; \
	  $(ECHO) "collecting examples for package '$${pkg}' ..."; \
	  LC_ALL=C $(R_EXE) < $(top_builddir)/share/R/massage-examples.R \
	    --args $${pkg} $(top_builddir)/library/$${pkg}/R-ex > $@; \
	)

$(EX_IN_RECOMMENDED):
	@(pkg=`basename $@ -Ex.R`; \
	  $(ECHO) "collecting examples for package '$${pkg}' ..."; \
	  LC_ALL=C $(R_EXE) < $(top_builddir)/share/R/massage-examples.R \
	    --args $${pkg} $(top_builddir)/library/$${pkg}/R-ex > $@; \
	)

FORCE:

mostlyclean: clean
clean:
	-@rm -f *.R *.Rout *.Rd* *.ps *.tex *.dat* data foo*
distclean: clean
	-@rm -f *.R*prev .RData sink-examp.txt
maintainer-clean: distclean