# Generic configuration for Hurd compilation

# Directory makefiles should set the variable makemode to either
# `server' if they compile and install a single program for /hurd
# `utility' if they compile and install a single program for /bin
# `servers' if they compile and install multiple programs for /hurd
# `utilities' if they compile and install multiple programs for /bin
# `library' if they compile and install a library
# `misc' if they do none of those

# Every makefile should define
# SRCS (all actual source code)
# LCLHDRS (all source headers in this directory [NOT MiG created])
# REMHDRS (all Hurd headers in other directories [NOT .defs files])

# Types `server', `utility', and `library' should define
# OBJS (all .o files used to produce the target).

# Types `server', `utility', `servers', and `utilities' should define
# HURDLIBS (all Hurd libraries used, omitting the dirname and the .a.)

# Types `server' and `utility' should define
# OTHERLIBS (all other libraries used)
# target (the name of the program built)

# Types `servers' and `utilities' should define
# targets (the names of all the programs built)

# Type `library' should define
# libname (the name of the library, without .a.)
# installhdrs (header files that should be installed in /include)


# Put this first so it's the default
all:


# This is the directory into which Hurd cross-building tools are placed
hurdinst := /home/gd3/hurdinst

# This is the directory which serves as root for the Hurd.
hostname := $(shell hostname)
hurdroot-douglas.gnu.ai.mit.edu = /home/hm2/hurdroot
hurdroot-ernst.gnu.ai.mit.edu = /home/hm1/hurdroot
hurdroot := $(hurdroot-$(hostname))

# This is the device with the filesystem mounted as $(hurdroot)
hurdrootdev := /dev/hd0f

# This is the directory containing the top-level Hurd source (and this file).
hurdsource := /home/gd3/gnu/hurd

# Where to find various things for compilation:

includedir := $(hurdinst)/include

startup := $(hurdinst)/lib/crt0.o
libc := $(patsubst %,$(hurdinst)/lib/lib%.a,c machuser hurduser c hurduser)

# END CONFIGURATION AREA


# Decode makemode:


ifeq ($(makemode),server)
 doinst := one
 installationdir := $(hurdinst)/hurd
 clean := yes
 cleantarg := $(target)
endif

ifeq ($(makemode),utility)
 doinst := one
 installationdir := $(hurdinst)/bin
 clean := yes
 cleantarg := $(target)
endif

ifeq ($(makemode),servers)
 doinst := many
 installationdir := $(hurdinst)/hurd
 clean := yes
 cleantarg := $(targets)
endif

ifeq ($(makemode),utilities)
 doinst := many
 installationdir := $(hurdinst)/bin
 clean := yes
 cleantarg := $(targets)
endif

ifeq ($(makemode),library)
 clean := yes
 cleantarg := $(libname).a
endif



# Hurd libraries
libthreads := $(hurdsource)/libthreads/libthreads.a
libports := $(hurdsource)/libports/libports.a
libioserver := $(hurdsource)/libioserver/libioserver.a
libpager := $(hurdsource)/libpager/libpager.a
libfshelp := $(hurdsource)/libfshelp/libfshelp.a
libdiskfs := $(hurdsource)/libdiskfs/libdiskfs.a
libtrivfs := $(hurdsource)/libtrivfs/libtrivfs.a

# Finding binaries
include $(hurdsource)/Maketools

# Flags for compilation.  
# It is important to have this inclusion first; that picks up our 
# library header files locally rather than from installed copies.
CPPFLAGS := -I$(hurdsource)
CFLAGS := -Wall -Wno-parentheses -g


# Standard targets

# Installation
ifeq ($(doinst),one)
all: $(target)
install: $(target)
	$(INSTALL_BIN) $(target) $(installationdir)/$(target)
endif

ifeq ($(doinst),many)
all: $(targets)
install: $(targets)
	for i in $(targets); do; $(INSTALL_BIN) $$i $(installationdir)/$$i; done
endif

ifeq ($(makemode),library)
all: $(libname).a
install: $(libname).a $(installhdrs)
	cp $(installhdrs) $(includedir)/hurd/
	cp $(libname).a $(hurdinst)/lib/$(libname).a
	ranlib $(hurdinst)/lib/$(libname).a
endif

# Provide default.
install:


# Building the target
# Yippee!  A use for computed variable references!
ifeq ($(doinst),one)
$(target): $(OBJS) $($(HURDLIBS)) $(OTHERLIBS)
#	$(CC) $(CFLAGS) -o $(target) $^
endif

ifeq ($(makemode),library)
$(libname).a: $(OBJS)
	rm -f $(libname).a
	$(AR) r $@ $^
endif

# Making a snapshot
distfiles := Makefile ChangeLog $(SRCS) $(LCLHDRS) DIST_FILES
lndist: $(distfiles) $(hurdsource)/hurd-snap/$(dir) FORCE
	ln $(distfiles) $(hurdsource)/hurd-snap/$(dir)
 
ifeq ($(dir),.)
$(hurdsource)/hurd-snap/$(dir):
else
$(hurdsource)/hurd-snap/$(dir):
	mkdir $(hurdsource)/hurd-snap/$(dir)
endif

# TAGS files
ifneq ($(dir),.)
TAGS: $(SRCS) $(LCLHDRS) $(REMHDRS)
	etags -o $@ $(addprefix -i ,$(addsuffix /TAGS,$(addprefix ../,$(HURDLIBS)))) $(SRCS) $(LCLHDRS) $(REMHDRS)
endif


# Cleaning
ifeq ($(clean),yes)
clean:
	rm -f *.o *Server.c *User.c *_S.h *_U.h $(cleantarg)
ifneq ($(makemode),library)
relink:
	rm -f $(cleantarg)
endif
endif
clean:
relink:



# Subdependencies

# Mounting $(hurdroot)
ifeq ($(hurdroot),)
$(hurdroot): force
	@echo Cannot do install on this machine.
	false
else
$(hurdroot): $(hurdroot)/mounted
$(hurdroot)/mounted:
	fsck -p $(hurdrootdev)
	mount $(hurdrootdev)
endif

# Building Hurd libraries
$(hurdsource)/lib%/lib%.a: FORCE
	$(MAKE) -C $(dir $@) $(notdir $@)


# How to build RPC stubs

# Server stubs from Hurd interfaces
hurddefs := $(notdir $(basename $(wildcard $(hurdsource)/hurd/*.defs)))
ht := $(hurdsource)/hurd/hurd_types.defs

$(addsuffix _S.h,$(hurddefs)): %_S.h: $(hurdsource)/hurd/%.defs $(ht)
	$(CPP) $(CPPFLAGS) $(MIGSFLAGS) -DSERVERPREFIX=S_ $(hurdsource)/hurd/$*.defs \
	| $(MIGCOM) -sheader $*_S.h -user /dev/null -server /dev/null -header /dev/null

$(addsuffix Server.c,$(hurddefs)): %Server.c: $(hurdsource)/hurd/%.defs $(ht)
	$(CPP) $(CPPFLAGS) $(MIGSFLAGS) -DSERVERPREFIX=S_ $(hurdsource)/hurd/$*.defs \
	| $(MIGCOM) -user /dev/null -header /dev/null -server $*Server.c
	
# User stubs from Hurd interfaces

# Build a .c file to avoid confusion (due to the need to build
# a header file in the following rule).
$(addsuffix _U.h,$(hurddefs)): %_U.h: $(hurdsource)/hurd/%.defs $(ht)
	$(CPP) $(CPPFLAGS) $(hurdsource)/hurd/$*.defs \
	| $(MIGCOM) -user $*User.c -server /dev/null -header $*_U.h

# We have to build a header file because otherwise MiG ignores the imports
$(addsuffix User.c,$(hurddefs)): %User.c: $(hurdsource)/hurd/%.defs $(ht)
	$(CPP) $(CPPFLAGS) $(hurdsource)/hurd/$*.defs \
	| $(MIGCOM) -user $*User.c -server /dev/null -header $*_U.h

# Server stubs from Mach interfaces
machdefs := notify 

$(addsuffix _S.h,$(machdefs)): %_S.h: $(includedir)/mach/%.defs
	$(CPP) $(CPPFLAGS) $(MIGSFLAGS) $(includedir)/mach/$*.defs \
	| $(MIGCOM) -sheader $*_S.h -user /dev/null -server /dev/null -header /dev/null

$(addsuffix Server.c,$(machdefs)): %Server.c: $(includedir)/mach/%.defs
	$(CPP) $(CPPFLAGS) $(MIGSFLAGS) $(includedir)/mach/$*.defs \
	| $(MIGCOM) -user /dev/null -header /dev/null -server $*Server.c

# User stubs from Mach interfaces

# Build a .c file to avoid confusion (due to the need to build
# a header file in the following rule).
$(addsuffix _U.h,$(machdefs)): %_U.h: $(includedir)/mach/%.defs $(ht)
	$(CPP) $(CPPFLAGS) $(includedir)/mach/$*.defs \
	| $(MIGCOM) -user $*User.c -server /dev/null -header $*_U.h

# We have to build a header file because otherwise MiG ignores the imports
$(addsuffix User.c,$(machdefs)): %User.c: $(includedir)/mach/%.defs $(ht)
	$(CPP) $(CPPFLAGS) $(includedir)/mach/$*.defs \
	| $(MIGCOM) -user $*User.c -server /dev/null -header $*_U.h

# Server stubs from Mach device interfaces
devicedefs := device_reply device

$(addsuffix _S.h,$(devicedefs)): %_S.h: $(includedir)/device/%.defs
	$(CPP) $(CPPFLAGS) $(MIGSFLAGS) $(includedir)/device/$*.defs \
	| $(MIGCOM) -sheader $*_S.h -user /dev/null -server /dev/null -header /dev/null

$(addsuffix Server.c,$(devicedefs)): %Server.c: $(includedir)/device/%.defs
	$(CPP) $(CPPFLAGS) $(MIGSFLAGS) $(includedir)/device/$*.defs \
	| $(MIGCOM) -user /dev/null -header /dev/null -server $*Server.c


# User stubs from Mach device interfaces

# Build a .c file to avoid confusion (due to the need to build
# a header file in the following rule).
$(addsuffix _U.h,$(devicedefs)): %_U.h: $(includedir)/device/%.defs $(ht)
	$(CPP) $(CPPFLAGS) $(includedir)/device/$*.defs \
	| $(MIGCOM) -user $*User.c -server /dev/null -header $*_U.h

# We have to build a header file because otherwise MiG ignores the imports
$(addsuffix User.c,$(devicedefs)): %User.c: $(includedir)/device/%.defs $(ht)
	$(CPP) $(CPPFLAGS) $(includedir)/device/$*.defs \
	| $(MIGCOM) -user $*User.c -server /dev/null -header $*_U.h



FORCE: