summaryrefslogtreecommitdiff
path: root/Makefile.am
blob: d904dca475a4f6ba5b6aafde44d4d3b017aa1d0e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
# Makefile for GNU Mach.

# Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any later
# version.
# 
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for more details.
# 
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

#
# Various definitions of the Automake environment.
#
# These will be augmented below.
#

SUBDIRS =
DIST_SUBDIRS =
EXTRA_DIST =
DISTCHECK_CONFIGURE_FLAGS =
noinst_LIBRARIES =
noinst_PROGRAMS =
TESTS=
info_TEXINFOS =
MOSTLYCLEANFILES =
DISTCLEANFILES =
AM_CPPFLAGS =
AM_CCASFLAGS =
AM_CFLAGS =
AM_LDFLAGS =

#
# Compilation flags
#

AM_CPPFLAGS += \
	-nostdinc -imacros config.h

AM_CPPFLAGS += \
	-I$(systype) \
	-I. \
	-I$(top_srcdir)/$(systype) \
	-I$(top_srcdir)/$(systype)/include/mach/sa \
	-I$(top_srcdir)/include

# Yes, this makes the eyes hurt.  But perhaps someone will finally take care of
# all that scruffy Mach code...  Also see <http://savannah.gnu.org/task/?5726>.
AM_CFLAGS += \
	-Wall

# See <http://lists.gnu.org/archive/html/bug-hurd/2006-01/msg00148.html>.
AM_CFLAGS += \
	-fno-strict-aliasing

# The smashing stack protector might be enabled by default, but might emit
# unsuitable code.
if disable_smashing_stack_protector
AM_CFLAGS += \
	-fno-stack-protector
endif

#
# MIG Setup.
#

# MIGCOM.
MIGCOM = $(MIG) -n -cc cat - /dev/null

# We need this because we use $(CPP) to preprocess MIG .defs files.
CPP = @CPP@ -x c

#
# Other Tools' Configuration.
#

# Don't needlessly overwrite files that whose contents haven't changed.  This
# helps for avoinding unneccessary recompilation cycles when keeping
# cross-compilation toolchains up-to-date.  Thus, unconditionally use the
# `install-sh' that is supplied by GNU Automake 1.10.1, as the GNU Coreutils
# one doesn't provide this functionality yet (TODO: change that).  TODO:
# `build-aux' is hardcoded.
install_sh = $(SHELL) $(abs_srcdir)/build-aux/install-sh -C
INSTALL = $(install_sh)

#
# The main kernel functionality.
#

noinst_LIBRARIES += \
	libkernel.a
libkernel_a_SOURCES =
nodist_libkernel_a_SOURCES =
MOSTLYCLEANFILES += \
	$(nodist_libkernel_a_SOURCES)

gnumach_o_LDADD = \
	libkernel.a

gnumach_SOURCES =
gnumach_LINKFLAGS =

# Makerules: how to do some things.
include Makerules.am

# Main Makefile fragment.
include Makefrag.am

# Test suite.
include tests/Makefrag.am

# Documentation.
include doc/Makefrag.am

#
# Kernel Image
#

# We need the following junk because of the include-files-from-libc.a magic.
# TODO.  Is the following kosher from a Automake point of view?  (I.e. a
# program `gnumach.o' that is then later used again as an object file.)
gnumach_o_SOURCES =
# TODO.  ``-u _start''.  System dependent?
gnumach_o_LINK = $(LD) -u _start -r -o $@
noinst_PROGRAMS += \
	gnumach.o

# This is the list of routines we decide is OK to steal from the C library.
clib_routines := memcmp memcpy memmove memset			\
		 strchr strstr strsep strpbrk strtok		\
		 htonl htons ntohl ntohs			\
		 udivdi3 __udivdi3				\
		 __rel_iplt_start __rel_iplt_end		\
		 _START _start etext _edata end _end # actually ld magic, not libc.
gnumach-undef: gnumach.$(OBJEXT)
	$(NM) -u $< | sed 's/  *U  *//' | sort -u > $@
MOSTLYCLEANFILES += gnumach-undef
gnumach-undef-bad: gnumach-undef Makefile
	sed '$(foreach r,$(clib_routines),/^$r$$/d;)' $< > $@
MOSTLYCLEANFILES += gnumach-undef-bad
clib-routines.o: gnumach-undef gnumach-undef-bad
	if test -s gnumach-undef-bad; \
	then cat gnumach-undef-bad; exit 2; else true; fi
	$(CCLD) -nostdlib -nostartfiles -r -static \
	  -o $@ `sed 's/^/-Wl,-u,/' < $<` -x c /dev/null -lc -lgcc

gnumach_LINK = $(LD) $(LINKFLAGS) $(gnumach_LINKFLAGS) -o $@
gnumach_LDADD = gnumach.o clib-routines.o

#
# Installation.
#

exec_bootdir = \
	$(exec_prefix)/boot
exec_boot_PROGRAMS = \
	gnumach

#
# Building a distribution.
#

EXTRA_DIST += \
	config.status.dep.patch

EXTRA_DIST += \
	DEVELOPMENT

dist-hook:
# Try to be very safe with respect to spuriously removing various directories
# in case of an error.
	find $(distdir)/ -type d -name CVS | while read d; do	\
	  rm -f "$$d"/{Entries,Repository,Root,Tag} &&		\
	  rmdir "$$d";						\
	done

DISTCLEANFILES += \
	Makefile.orig \
	config.status.orig

#
# Legacy support.
#

install-headers: install-data
	@echo '*****************************************************'
	@echo '* As you can see above, I was so kind to rewrite your'
	@echo '* `make $@'\'
	@echo '* into'
	@echo '* `make $^'\'
	@echo '* which is how it is to be spelled these days.'
	@echo '*'
	@echo '* Please get your instructions fixed.'
	@echo '*****************************************************'
	@echo
	@echo 'Penalty:'
	sleep 20