# Makefile to build .eps files from .fig, and .pdf files from either
# .eps or .fig.
# Part of the compexity here is because the xfig source to some of the
# diagrams is missing.

# 8 October 2000    Nick Urbanik <nicku@vtc.edu.hk>

# /usr/bin/epstopdf is part of tetex-1.0.7-7 on my Red Hat 7 system.
EPSTOPDF = epstopdf
# /usr/X11R6/bin/convert is part of ImageMagick on my Red Hat 7 system
CONVERT = convert
# /usr/X11R6/bin/fig2dev is part of transfig-3.2.3c-1 on my Red Hat 7 system
FIG2DEV = fig2dev

# There is a bug in epstopdf (gs?) where some bitmapped files get converted
# into a mess.  For these, I found that converting to .png then to .pdf
# seemed to work.
# Doing convert kdeshot.eps kdeshot.pdf seems to result in part of the
# picture missing.

# No need to do anything with this, but remember that we need it!
TEX_SOURCE_FILE = kernel-layering.tex

# A strange two-step process seems to be required to successfuly convert
# these to pdf, so that can generate a PDF document:
BITMAP_EPS_FILES = \
cli2 \
fvwmshot \
gnomeshot \
kdeshot \
overview2 \
overview3 \
permissions

# All the rest are best handled using epstopdf, since it gets the bounding
# box right.

FIG_FILES = \
basic_filesystem_hard_links \
basic_filesystem_soft_links-1 \
basic_filesystem_soft_links-2 \
basic_shell_use_input_redirection \
basic_shell_use_output_redirection \
basic_shell_use_pipelines \
basic_tools_sorting_and_uniq \
fundamentals_of_TCPIP_address_classes-long-lines \
fundamentals_of_TCPIP_address_classes \
linux_overview_pipes_and_tools \
linux_overview_redirect_IO_1 \
linux_overview_redirect_IO_2 \
linux_overview_unix_philosophy \
overview3-shell

# These files were drawn with xfig, but the source is missing.
# Calling epstopdf works well with these.
OTHER_EPSTOPDF_OKAY_FILES = \
fundamentals_of_TCPIP_packets \
fundamentals_of_TCPIP_ports \
fundamentals_of_TCPIP_routing


# Pattern(s) to match for old versions of files to be deleted by 'make clean'
OLDVERSIONS = *~ *.fig.bak

EPSFILES = $(BITMAP_EPS_FILES:%=%.eps) \
           $(FIG_FILES:%=%.eps) \
           $(OTHER_EPSTOPDF_OKAY_FILES:%=%.eps)

PDFFILES = $(BITMAP_EPS_FILES:%=%.pdf) \
           $(FIG_FILES:%=%.pdf) \
           $(OTHER_EPSTOPDF_OKAY_FILES:%=%.pdf)

# create all eps and pdf files
all: $(PDFFILES) $(EPSFILES)

eps: $(EPSFILES)

# create a pdf file from an xfig file
%.pdf: %.fig
	$(FIG2DEV) -L eps $< $*.eps && \
	$(EPSTOPDF) $*.eps > $@

# create a pdf file from a bitmap eps file; epstopdf fails on these:
# Now you would think that calling convert in one step would work,
# but for reasons I don't understand, it doesn't:
# convert bitmap-epsfile.eps bitmap-epsfile.pdf
$(BITMAP_EPS_FILES:%=%.pdf):	$(BITMAP_EPS_FILES:%=%.eps)
	$(CONVERT) $(basename $@).eps $(basename $@).png && \
	$(CONVERT) $(basename $@).png $@ && \
	rm $(basename $@).png

$(OTHER_EPSTOPDF_OKAY_FILES:%=%.pdf):	$(OTHER_EPSTOPDF_OKAY_FILES:%=%.eps)
	$(EPSTOPDF) $(basename $@).eps > $@

%.pdf: %.eps
	$(EPSTOPDF) $*.eps > $@

# create an encapsulated postscript file from an xfig file
%.eps: %.fig
	$(FIG2DEV) -L eps $< $@

# delete all files which can easily be regenerated
tidy:
	-rm -f $(PDFFILES) $(FIG_FILES:%=%.eps)

# delete all files which can be regenerated
clean:	tidy
	@# delete editor old-version files
	-rm -f $(OLDVERSIONS)