about summary refs log tree commit diff
path: root/sysdeps/unix/Makefile
blob: 1aea477064f73df6850c0e23ed95f268a9857893 (plain) (blame)
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
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
# Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
# This file is part of the GNU C Library.

# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.

# The GNU C Library 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
# Library General Public License for more details.

# You should have received a copy of the GNU Library General Public
# License along with the GNU C Library; see the file COPYING.LIB.  If not,
# write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.

# The unix-specific configure fragment writes `unix-generated' in config.make.
config-generated := $(config-generated) $(unix-generated)

ifeq (,$(filter-out $(sysdep_dir)/stub/ $(common-objpfx),\
	$(dir $(firstword $(wildcard $(+sysdep_dirs:%=%/local_lim.h))))))

ifneq (,$(wildcard $(sysincludedir)/sys/param.h))
local_lim-CFLAGS := $(local_lim-CFLAGS) -DHAVE_SYS_PARAM_H
endif
ifneq (,$(wildcard $(sysincludedir)/sys/limits.h))
local_lim-CFLAGS := $(local_lim-CFLAGS) -DHAVE_SYS_LIMITS_H
endif
ifneq (,$(wildcard $(sysincludedir)/limits.h))
local_lim-CFLAGS := $(local_lim-CFLAGS) -DHAVE_LIMITS_H
endif

$(common-objpfx)local_lim.h: $(common-objpfx)mk-local_lim
	if $(dir $<)$(notdir $<) > $@-t; then mv $@-t $@; else XXX; fi
$(common-objpfx)mk-local_lim: $(sysdep_dir)/unix/mk-local_lim.c
	cwd=`pwd`; cd $(@D); \
	$(BUILD_CC) $(BUILD_CFLAGS) $(local_lim-CFLAGS) $$cwd/$< -o $(@F)

before-compile := $(before-compile) $(common-objpfx)local_lim.h
common-generated := $(common-generated) local_lim.h mk-local_lim

endif

ifeq (,$(filter-out $(sysdep_dir)/stub/ $(common-objpfx),\
	$(patsubst %/sys/param.h,%/,\
		   $(firstword $(wildcard $(+sysdep_dirs:%=%/sys/param.h))))))

before-compile := $(before-compile) $(common-objpfx)sys/param.h

$(common-objpfx)sys/param.h: $(sysincludedir)/sys/param.h
	-mkdir $(@D:%/=%)
	(echo '#ifndef _GNU_SYS_PARAM_H';	\
	 echo '#define _GNU_SYS_PARAM_H 1';	\
	 echo '#include <endian.h>';		\
	 awk < $<			\
	   '/^#define[ 	]*NULL/ { print "#ifndef NULL";	\
				  print $$0;		\
				  print "#endif";	\
				  was_null = 1 }	\
	    { if (!was_null) print $$0;			\
	      was_null = 0 }';		\
	 echo '#ifndef MAXHOSTNAMELEN'; \
	 echo '#define MAXHOSTNAMELEN 64 /* XXX */'; \
	 echo '#endif /* No MAXHOSTNAMELEN.  */'; \
	 echo '#endif	/* sys/param.h */') > $@-tmp
	mv $@-tmp $@

$(common-objpfx)param.h.c: $(sysincludedir)/sys/param.h
	rm -f $@
	cp $< $@
$(common-objpfx)param.h.dep: $(common-objpfx)param.h.c \
			     $(sysdep_dir)/unix/Makefile
	$(+mkdep) -I$(sysincludedir) $<		\
	| sed > $@				\
	      -e 's@^.*:@@'			\
	      -e 's@$<@@g'			\
	      -e 's@$(sysincludedir)/*@@g'	\
	      -e 's@\\$$@@'			\
	      -e 's@^@sys/param.h-includes := $$(sys/param.h-includes) @'

# Get the generated definition of sys/param.h-includes.
ifndef no_deps
include $(common-objpfx)param.h.dep
endif

# Don't preempt our own headers.
sys/param.h-includes := \
  $(filter-out $(patsubst $(..)%,%,\
			  $(wildcard $(addprefix $(..),\
				     $(sys/param.h-includes)))),\
	       $(sys/param.h-includes))


.PHONY: sys/param.h-includes
sys/param.h-includes: $(addprefix $(common-objpfx),$(sys/param.h-includes))

ifdef sys/param.h-includes
# Copy the system files to $(common-objdir).
$(addprefix $(common-objpfx),$(sys/param.h-includes)): $(common-objpfx)%: \
						       $(sysincludedir)/%
	-mkdir $(@D:%/=%)
# Some of these files sometimes contain conflicting declarations for htons,
# ntohs, etc.  They also often contain definitions of *_ENDIAN and
# BYTE_ORDER, which we define ourselves in <endian.h>.
	sed -e '/[ 	]*[hn]to[nh][sl][	 (]*/d' \
	    -e '/^#define[ 	]*[A-Z]*_ENDIAN/d' \
	    -e '/^#define[ 	]*BYTE_ORDER/d' \
	    $< > $@-t
	mv $@-t $@
endif

common-generated := $(common-generated) \
		    sys/param.h $(sys/param.h-includes) param.h.c param.h.dep


ifeq ($(subdir),misc)

# Install system headers the system sys/param.h uses.

sysdep_headers := $(sysdep_headers) $(sys/param.h-includes)

endif # misc

endif # No sysdep sys/param.h.

ifeq (,$(filter-out $(sysdep_dir)/stub/ $(common-objpfx),\
	$(dir $(firstword $(wildcard $(+sysdep_dirs:%=%/errnos.h))))))

# These need to exist before any compiling is done,
# so cpp doesn't instead find the stub versions.
before-compile := $(before-compile) $(common-objpfx)errnos.h

$(common-objpfx)errnos.h: $(common-objpfx)make-errnos
	$(dir $<)$(notdir $<) > $@-tmp
	mv $@-tmp $@

$(common-objpfx)make-errnos: $(common-objpfx)make-errnos.c
	$(common-objdir-compile)

$(common-objpfx)make-errnos.c: $(sysdep_dir)/unix/errnos-tmpl.c \
			$(sysdep_dir)/unix/errnos.awk $(common-objpfx)errnos
	awk -f $(word 2,$^) errnos="`tr '\012' ' ' < $(word 3,$^)`" $< > $@T
	mv $@T $@

$(common-objpfx)errnos: $(wildcard $(sysincludedir)/errno.h	\
				   $(sysincludedir)/sys/errno.h)
	cat $^ | sed -n 's/^#define[ 	]*\(E[A-Z0-9][A-Z0-9]*\)[ 	].*$$/\1/p' > $@-tmp
	mv $@-tmp $@

common-generated := $(common-generated) \
		    errnos.h errnos make-errnos make-errnos.c
endif

ifeq (,$(filter-out $(sysdep_dir)/stub/ $(common-objpfx),\
	$(dir $(firstword $(wildcard $(+sysdep_dirs:%=%/ioctls.h))))))

before-compile := $(before-compile) $(common-objpfx)ioctls.h

$(common-objpfx)ioctls.h: $(common-objpfx)make-ioctls
	$(dir $<)$(notdir $<) > $@-tmp
	mv $@-tmp $@

ioctl-includes := sys/termios.h net/nit.h
ioctl-includes := $(wildcard $(addprefix $(sysincludedir)/,$(ioctl-includes)))
make-ioctls-CFLAGS := $(subst /,_,$(subst .,_,\
			$(patsubst $(sysincludedir)/%,-DHAVE_%,\
				   $(ioctl-includes))))

$(common-objpfx)make-ioctls: $(common-objpfx)make-ioctls.c
	cd $(@D); $(BUILD_CC) $(BUILD_CFLAGS) $(make-ioctls-CFLAGS) \
			$(<:$(common-objpfx)%=%) -o $(@F)

$(common-objpfx)make-ioctls.c: $(sysdep_dir)/unix/ioctls-tmpl.c \
			       $(sysdep_dir)/unix/ioctls.awk \
			       $(common-objpfx)ioctls
	awk -f $(word 2,$^) requests="`cat $(word 3,$^)`" $< > $@T
	mv $@T $@


termbits.h := $(firstword $(wildcard $(+sysdep_dirs:%=%/termbits.h)))
ifeq ($(termbits.h),$(sysdep_dir)/generic/termbits.h)
termbits.h := # Ignore the generic version.
endif

# If there is a system-specific <termbits.h> file, we want to omit all the
# symbols it defines from ioctls.  Otherwise, both ioctls.h and termbits.h
# would define them.  The system-specific <termbits.h> file presumably
# defines them with the same values as we find from the system's headers.
# We also want to omit from ioctls the symbols defined in our own
# <sys/ttydefaults.h>, to avoid multiple definition conflicts.  We use
# snarf-ioctls on these files to find what symbols we want to omit.  fgrep
# -xv gives all lines which do not match in their entirety; without -x,
# CSTOP's presence elided TIOCSTOP.

$(common-objpfx)ioctls: $(sysdep_dir)/unix/snarf-ioctls \
			$(sysincludedir)/sys/ioctl.h $(ioctl-includes)
	$(dir $<)$(notdir $<) $(filter-out $<,$^) \
	| fgrep -xv "`($(dir $<)$(notdir $<) $(termbits.h) \
					     $(..)termios/sys/ttydefaults.h; \
		      echo NULL) \
		     | sort | uniq`" \
	| sort | uniq | tr '\012' ' ' > $@-tmp
	mv $@-tmp $@

common-generated := $(common-generated) \
		    ioctls.h ioctls make-ioctls make-ioctls.c
endif

ifeq ($(subdir),stdio-common)
ifeq (,$(filter-out $(sysdep_dir)/stub/ $(objpfx),\
	$(dir $(firstword $(wildcard $(+sysdep_dirs:%=%/errlist.c))))))

before-compile: $(objpfx)errlist.c
$(objpfx)errlist.c: $(objpfx)make_errlist
	@rm -f $@
	$(dir $<)$(notdir $<) > $@-tmp
	mv $@-tmp $@

$(objpfx)make_errlist: $(sysdep_dir)/unix/make_errlist.c
	$(native-compile)

generated := $(generated) make_errlist errlist.c

endif
endif # stdio-common

ifeq (,$(filter-out $(sysdep_dir)/stub/ $(common-objpfx),\
	$(dir $(firstword $(wildcard $(+sysdep_dirs:%=%/sys/syscall.h))))))

# The syscall code assumes a file <sys/syscall.h> that defines macros
# `SYS_call' for syscall `call'.  Variations on this I have seen include:
# it's in <sys/syscall.h>;
# it's in <sys.s>;
# it defines `CALL' instead of `SYS_call'.
# Irix has a <syscall.h> which is not what we want, so check for <sys.s> first.

# Find a file that might have these.  NOTE: This list of possibilities is
# repeated in sysdeps/unix/configure and the two should be kept in sync.
syscall.h := $(firstword $(wildcard $(addprefix $(sysincludedir)/, \
						sys.s sys/sys.s \
						sys.S sys/sys.S \
						syscall.h sys/syscall.h \
						)))
ifdef syscall.h

# Transmogrify any of several formats of the file into the one we want.
$(common-objpfx)sys/syscall.h: $(syscall.h)
	-mkdir $(common-objpfx)sys
	tr '[A-Z]' '[a-z]' < $< | \
	sed -e 's/[ 	]sys_/ /' \
	    -e 's/^#define[ 	]*\([a-z0-9_]*\)[ 	]*/#define SYS_\1 /' \
	    -e 's/[ 	]sys_/ SYS_/' \
	    -e 's/SYS_syscall_basenum/syscall_basenum/g' \
	    -e 's/SYS_kerncall_basenum/kerncall_basenum/g' \
	    -e 's/SYS_sysvoffset/sysvoffset/g' \
	    -e '/^#/!d' \
	    -e '/^#ident/d' \
	    -e 's-\(/\*[^*]*\)$$-\1\*/-' \
	> $@-tmp
	mv $@-tmp $@

before-compile := $(before-compile) $(common-objpfx)syscall.h
common-generated := $(common-generated) syscall.h

endif

endif

ifndef inhibit-unix-syscalls

# Sysdep dirs unix/... can contain a file syscalls.list,
# which specifies objects to be compiled as simple Unix system calls.

-include $(common-objpfx)sysd-syscalls
omit-deps += $(unix-syscalls)

ifeq (misc,$(subdir))
sysdep_routines += $(unix-extra-syscalls)
endif

export sysdirs
export asm_CPP := $(COMPILE.S) -E -x assembler-with-cpp

$(common-objpfx)sysd-syscalls: $(..)sysdeps/unix/make-syscalls.sh \
			       $(wildcard $(+sysdep_dirs:%=%/syscalls.list))
	for dir in $(+sysdep_dirs); do \
	  test -f $$dir/syscalls.list && \
	  { $(SHELL) $(dir $<)$(notdir $<) \
		     $$dir $(object-suffixes) || exit 1; }; \
	  test $$dir = $(..)sysdeps/unix && break; \
	done > $@T
	mv -f $@T $@

# This syscall objects depend on s-proto.d, which is generated to
# specify dependencies generated syscalls with have on headers.
ifdef subdir
ifndef no_deps
# These deps use file names relative to a subdir, so don't
# include them in the parent directory.
-include $(common-objpfx)s-proto.d
endif
endif

$(common-objpfx)s-proto.d: $(common-objpfx)%.d: $(..)sysdeps/unix/%.S
	$(+make-deps)

endif