sysdeps/unix/Makefile

   1 # Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
   2 # This file is part of the GNU C Library.
   3
   4 # The GNU C Library is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU Library General Public License as
   6 # published by the Free Software Foundation; either version 2 of the
   7 # License, or (at your option) any later version.
   8
   9 # The GNU C Library is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # Library General Public License for more details.
  13
  14 # You should have received a copy of the GNU Library General Public
  15 # License along with the GNU C Library; see the file COPYING.LIB.  If
  16 # not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 # Cambridge, MA 02139, USA.
  18
  19 # The unix-specific configure fragment writes `unix-generated' in config.make.
  20 config-generated := $(config-generated) $(unix-generated)
  21 \f
  22 ifeq (,$(filter-out $(sysdep_dir)/stub/ $(common-objpfx),\
  23         $(dir $(firstword $(wildcard $(+sysdep_dirs:%=%/local_lim.h))))))
  24
  25 ifneq (,$(wildcard $(sysincludedir)/sys/param.h))
  26 local_lim-CFLAGS := $(local_lim-CFLAGS) -DHAVE_SYS_PARAM_H
  27 endif
  28 ifneq (,$(wildcard $(sysincludedir)/sys/limits.h))
  29 local_lim-CFLAGS := $(local_lim-CFLAGS) -DHAVE_SYS_LIMITS_H
  30 endif
  31 ifneq (,$(wildcard $(sysincludedir)/limits.h))
  32 local_lim-CFLAGS := $(local_lim-CFLAGS) -DHAVE_LIMITS_H
  33 endif
  34
  35 $(common-objpfx)local_lim.h: $(common-objpfx)mk-local_lim
  36         if $(dir $<)$(notdir $<) > $@-t; then mv $@-t $@; else XXX; fi
  37 $(common-objpfx)mk-local_lim: $(sysdep_dir)/unix/mk-local_lim.c
  38         cwd=`pwd`; cd $(@D); \
  39         $(BUILD_CC) $(BUILD_CFLAGS) $(local_lim-CFLAGS) $$cwd/$< -o $(@F)
  40
  41 before-compile := $(before-compile) $(common-objpfx)local_lim.h
  42 common-generated := $(common-generated) local_lim.h mk-local_lim
  43
  44 endif
  45 \f
  46 ifeq (,$(filter-out $(sysdep_dir)/stub/ $(common-objpfx),\
  47         $(patsubst %/sys/param.h,%/,\
  48                    $(firstword $(wildcard $(+sysdep_dirs:%=%/sys/param.h))))))
  49
  50 before-compile := $(before-compile) $(common-objpfx)sys/param.h
  51
  52 $(common-objpfx)sys/param.h: $(sysincludedir)/sys/param.h
  53         -mkdir $(@D:%/=%)
  54         (echo '#ifndef _GNU_SYS_PARAM_H';       \
  55          echo '#define _GNU_SYS_PARAM_H 1';     \
  56          echo '#include <endian.h>';            \
  57          awk < $<                       \
  58            '/^#define[  ]*NULL/ { print "#ifndef NULL"; \
  59                                   print $$0;            \
  60                                   print "#endif";       \
  61                                   was_null = 1 }        \
  62             { if (!was_null) print $$0;                 \
  63               was_null = 0 }';          \
  64          echo '#ifndef MAXHOSTNAMELEN'; \
  65          echo '#define MAXHOSTNAMELEN 64 /* XXX */'; \
  66          echo '#endif /* No MAXHOSTNAMELEN.  */'; \
  67          echo '#endif   /* sys/param.h */') > $@-tmp
  68         mv $@-tmp $@
  69
  70 $(common-objpfx)param.h.c: $(sysincludedir)/sys/param.h
  71         rm -f $@
  72         cp $< $@
  73 $(common-objpfx)param.h.dep: $(common-objpfx)param.h.c \
  74                              $(sysdep_dir)/unix/Makefile
  75         $(+mkdep) -I$(sysincludedir) $<         \
  76         | sed > $@                              \
  77               -e 's@^.*:@@'                     \
  78               -e 's@$<@@g'                      \
  79               -e 's@$(sysincludedir)/*@@g'      \
  80               -e 's@\\$$@@'                     \
  81               -e 's@^@sys/param.h-includes := $$(sys/param.h-includes) @'
  82
  83 # Get the generated definition of sys/param.h-includes.
  84 ifndef no_deps
  85 include $(common-objpfx)param.h.dep
  86 endif
  87
  88 # Don't preempt our own headers.
  89 sys/param.h-includes := \
  90   $(filter-out $(patsubst $(..)%,%,\
  91                           $(wildcard $(addprefix $(..),\
  92                                      $(sys/param.h-includes)))),\
  93                $(sys/param.h-includes))
  94
  95
  96 .PHONY: sys/param.h-includes
  97 sys/param.h-includes: $(addprefix $(common-objpfx),$(sys/param.h-includes))
  98
  99 ifdef sys/param.h-includes
 100 # Copy the system files to $(common-objdir).
 101 $(addprefix $(common-objpfx),$(sys/param.h-includes)): $(common-objpfx)%: \
 102                                                        $(sysincludedir)/%
 103         -mkdir $(@D:%/=%)
 104 # Some of these files sometimes contain conflicting declarations for htons,
 105 # ntohs, etc.  They also often contain definitions of *_ENDIAN and
 106 # BYTE_ORDER, which we define ourselves in <endian.h>.
 107         sed -e '/[      ]*[hn]to[nh][sl][        (]*/d' \
 108             -e '/^#define[      ]*[A-Z]*_ENDIAN/d' \
 109             -e '/^#define[      ]*BYTE_ORDER/d' \
 110             $< > $@-t
 111         mv $@-t $@
 112 endif
 113
 114 common-generated := $(common-generated) \
 115                     sys/param.h $(sys/param.h-includes) param.h.c param.h.dep
 116
 117
 118 ifeq ($(subdir),misc)
 119
 120 # Install system headers the system sys/param.h uses.
 121
 122 sysdep_headers := $(sysdep_headers) $(sys/param.h-includes)
 123
 124 endif # misc
 125
 126 endif # No sysdep sys/param.h.
 127 \f
 128 ifeq (,$(filter-out $(sysdep_dir)/stub/ $(common-objpfx),\
 129         $(dir $(firstword $(wildcard $(+sysdep_dirs:%=%/errnos.h))))))
 130
 131 # These need to exist before any compiling is done,
 132 # so cpp doesn't instead find the stub versions.
 133 before-compile := $(before-compile) $(common-objpfx)errnos.h
 134
 135 $(common-objpfx)errnos.h: $(common-objpfx)make-errnos
 136         $(dir $<)$(notdir $<) > $@-tmp
 137         mv $@-tmp $@
 138
 139 $(common-objpfx)make-errnos: $(common-objpfx)make-errnos.c
 140         $(common-objdir-compile)
 141
 142 $(common-objpfx)make-errnos.c: $(sysdep_dir)/unix/errnos-tmpl.c \
 143                         $(sysdep_dir)/unix/errnos.awk $(common-objpfx)errnos
 144         awk -f $(word 2,$^) errnos="`tr '\012' ' ' < $(word 3,$^)`" $< > $@T
 145         mv $@T $@
 146
 147 $(common-objpfx)errnos: $(wildcard $(sysincludedir)/errno.h     \
 148                                    $(sysincludedir)/sys/errno.h)
 149         cat $^ | sed -n 's/^#define[    ]*\(E[A-Z0-9][A-Z0-9]*\)[       ].*$$/\1/p' > $@-tmp
 150         mv $@-tmp $@
 151
 152 common-generated := $(common-generated) \
 153                     errnos.h errnos make-errnos make-errnos.c
 154 endif
 155 \f
 156 ifeq (,$(filter-out $(sysdep_dir)/stub/ $(common-objpfx),\
 157         $(dir $(firstword $(wildcard $(+sysdep_dirs:%=%/ioctls.h))))))
 158
 159 before-compile := $(before-compile) $(common-objpfx)ioctls.h
 160
 161 $(common-objpfx)ioctls.h: $(common-objpfx)make-ioctls
 162         $(dir $<)$(notdir $<) > $@-tmp
 163         mv $@-tmp $@
 164
 165 ioctl-includes := sys/termios.h net/nit.h
 166 ioctl-includes := $(wildcard $(addprefix $(sysincludedir)/,$(ioctl-includes)))
 167 make-ioctls-CFLAGS := $(subst /,_,$(subst .,_,\
 168                         $(patsubst $(sysincludedir)/%,-DHAVE_%,\
 169                                    $(ioctl-includes))))
 170
 171 $(common-objpfx)make-ioctls: $(common-objpfx)make-ioctls.c
 172         cd $(@D); $(BUILD_CC) $(BUILD_CFLAGS) $(make-ioctls-CFLAGS) \
 173                         $(<:$(common-objpfx)%=%) -o $(@F)
 174
 175 $(common-objpfx)make-ioctls.c: $(sysdep_dir)/unix/ioctls-tmpl.c \
 176                                $(sysdep_dir)/unix/ioctls.awk \
 177                                $(common-objpfx)ioctls
 178         awk -f $(word 2,$^) requests="`cat $(word 3,$^)`" $< > $@T
 179         mv $@T $@
 180
 181
 182 termbits.h := $(firstword $(wildcard $(+sysdep_dirs:%=%/termbits.h)))
 183 ifeq ($(termbits.h),$(sysdep_dir)/generic/termbits.h)
 184 termbits.h := # Ignore the generic version.
 185 endif
 186
 187 # If there is a system-specific <termbits.h> file, we want to omit all the
 188 # symbols it defines from ioctls.  Otherwise, both ioctls.h and termbits.h
 189 # would define them.  The system-specific <termbits.h> file presumably
 190 # defines them with the same values as we find from the system's headers.
 191 # We also want to omit from ioctls the symbols defined in our own
 192 # <sys/ttydefaults.h>, to avoid multiple definition conflicts.  We use
 193 # snarf-ioctls on these files to find what symbols we want to omit.  fgrep
 194 # -xv gives all lines which do not match in their entirety; without -x,
 195 # CSTOP's presence elided TIOCSTOP.
 196
 197 $(common-objpfx)ioctls: $(sysdep_dir)/unix/snarf-ioctls \
 198                         $(sysincludedir)/sys/ioctl.h $(ioctl-includes)
 199         $(dir $<)$(notdir $<) $(filter-out $<,$^) \
 200         | fgrep -xv "`($(dir $<)$(notdir $<) $(termbits.h) \
 201                                              $(..)termios/sys/ttydefaults.h; \
 202                       echo NULL) \
 203                      | sort | uniq`" \
 204         | sort | uniq | tr '\012' ' ' > $@-tmp
 205         mv $@-tmp $@
 206
 207 common-generated := $(common-generated) \
 208                     ioctls.h ioctls make-ioctls make-ioctls.c
 209 endif
 210 \f
 211 ifeq ($(subdir),stdio-common)
 212 ifeq (,$(filter-out $(sysdep_dir)/stub/ $(objpfx),\
 213         $(dir $(firstword $(wildcard $(+sysdep_dirs:%=%/errlist.c))))))
 214
 215 before-compile: $(objpfx)errlist.c
 216 $(objpfx)errlist.c: $(objpfx)make_errlist
 217         @rm -f $@
 218         $(dir $<)$(notdir $<) > $@-tmp
 219         mv $@-tmp $@
 220
 221 $(objpfx)make_errlist: $(sysdep_dir)/unix/make_errlist.c
 222         $(native-compile)
 223
 224 generated := $(generated) make_errlist errlist.c
 225
 226 endif
 227 endif # stdio-common
 228 \f
 229 ifeq (,$(filter-out $(sysdep_dir)/stub/ $(common-objpfx),\
 230         $(dir $(firstword $(wildcard $(+sysdep_dirs:%=%/syscall.h))))))
 231
 232 # The syscall code assumes a file <syscall.h> that defines macros
 233 # `SYS_call' for syscall `call'.  Variations on this I have seen include:
 234 # it's in <sys/syscall.h>;
 235 # it's in <sys.s>;
 236 # it defines `CALL' instead of `SYS_call'.
 237 # Irix has a <syscall.h> which is not what we want, so check for <sys.s> first.
 238
 239 # Find a file that might have these.  NOTE: This list of possibilities is
 240 # repeated in sysdeps/unix/configure and the two should be kept in sync.
 241 syscall.h := $(firstword $(wildcard $(addprefix $(sysincludedir)/, \
 242                                                 sys.s sys/sys.s \
 243                                                 sys.S sys/sys.S \
 244                                                 syscall.h sys/syscall.h \
 245                                                 )))
 246 ifdef syscall.h
 247
 248 # Transmogrify any of several formats of the file into the one we want.
 249 $(common-objpfx)syscall.h: $(syscall.h)
 250         tr '[A-Z]' '[a-z]' < $< | \
 251         sed -e 's/[     ]sys_/ /' \
 252             -e 's/^#define[     ]*\([a-z0-9_]*\)[       ]*/#define SYS_\1 /' \
 253             -e 's/[     ]sys_/ SYS_/' \
 254             -e 's/SYS_syscall_basenum/syscall_basenum/g' \
 255             -e 's/SYS_kerncall_basenum/kerncall_basenum/g' \
 256             -e 's/SYS_sysvoffset/sysvoffset/g' \
 257             -e '/^#/!d' \
 258             -e '/^#ident/d' \
 259             -e 's-\(/\*[^*]*\)$$-\1\*/-' \
 260         > $@-tmp
 261         mv $@-tmp $@
 262
 263 before-compile := $(before-compile) $(common-objpfx)syscall.h
 264 common-generated := $(common-generated) syscall.h
 265
 266 endif
 267
 268 endif
 269 \f
 270 ifndef inhibit-unix-syscalls
 271
 272 # Sysdep dirs unix/... can contain a file syscalls.list,
 273 # which specifies objects to be compiled as simple Unix system calls.
 274
 275 -include $(common-objpfx)sysd-syscalls
 276 omit-deps += $(unix-syscalls)
 277
 278 ifeq (misc,$(subdir))
 279 sysdep_routines += $(unix-extra-syscalls)
 280 endif
 281
 282 export sysdirs
 283 export asm_CPP := $(COMPILE.S) -E -x assembler-with-cpp
 284
 285 $(common-objpfx)sysd-syscalls: $(..)sysdeps/unix/make-syscalls.sh \
 286                                $(wildcard $(+sysdep_dirs:%=%/syscalls.list))
 287         for dir in $(+sysdep_dirs); do \
 288           test -f $$dir/syscalls.list && \
 289           { $(SHELL) $(dir $<)$(notdir $<) \
 290                      $$dir $(object-suffixes) || exit 1; }; \
 291           test $$dir = sysdeps/unix && break; \
 292         done > $@T
 293         mv -f $@T $@
 294
 295 # This syscall objects depend on s-proto.d, which is generated to
 296 # specify dependencies generated syscalls with have on headers.
 297 ifdef subdir
 298 ifndef no_deps
 299 # These deps use file names relative to a subdir, so don't
 300 # include them in the parent directory.
 301 -include $(common-objpfx)s-proto.d
 302 endif
 303 endif
 304
 305 $(common-objpfx)s-proto.d: $(common-objpfx)%.d: $(..)sysdeps/unix/%.S \
 306                            $(before-compile)
 307         $(+make-deps)
 308
 309 endif