sysdeps/nacl/Makefile

   1 # Makefile fragment for NaCl configurations.
   2
   3 # Copyright (C) 2015-2016 Free Software Foundation, Inc.
   4 # This file is part of the GNU C Library.
   5
   6 # The GNU C Library is free software; you can redistribute it and/or
   7 # modify it under the terms of the GNU Lesser General Public
   8 # License as published by the Free Software Foundation; either
   9 # version 2.1 of the License, or (at your option) any later version.
  10
  11 # The GNU C Library is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 # Lesser General Public License for more details.
  15
  16 # You should have received a copy of the GNU Lesser General Public
  17 # License along with the GNU C Library; if not, see
  18 # <http://www.gnu.org/licenses/>.
  19
  20 # The libthread_db code does not compile for NaCl because there is no
  21 # sys/procfs.h supplying the register layout types.  But since libthread_db
  22 # will probably never be useful for NaCl, just elide the directory rather
  23 # than implementing stuff to make it compile (and never get used).
  24 subdirs := $(filter-out nptl_db,$(subdirs))
  25 sorted-subdirs := $(filter-out nptl_db,$(sorted-subdirs))
  26
  27 # The (required) --with-headers option to configure sets sysheaders to the
  28 # location of the native_client/.. source directory.  We'll get necessary
  29 # headers directly from there.
  30 naclsrc = $(sysheaders)/native_client/src
  31
  32 # How to find the directory containing this Makefile.
  33 nacl = $(..)sysdeps/nacl
  34
  35 # Generate our bits/errno.h with the numbers from NaCl's sys/errno.h file.
  36 nacl-errno = $(naclsrc)/trusted/service_runtime/include/sys/errno.h
  37
  38 bits-errno = $(common-objpfx)bits/errno.h
  39 $(bits-errno): $(common-objpfx)stamp-errnos ;
  40 $(common-objpfx)stamp-errnos: $(nacl)/errnos.awk $(..)manual/errno.texi \
  41                               $(nacl-errno)
  42         $(make-target-directory)
  43         $(AWK) -f $^ > $(bits-errno)-tmp
  44 # Make it unwritable so noone will edit it by mistake.
  45         -chmod a-w $(bits-errno)-tmp
  46         $(move-if-change) $(bits-errno)-tmp $(bits-errno)
  47         touch $@
  48 common-generated += stamp-errnos bits/errno.h
  49 before-compile += $(bits-errno)
  50
  51 # Massage NaCl's irt.h (and irt_dev.h) into something we can use.
  52 # See irt.sed for details.
  53 nacl-irt.h = $(common-objpfx)nacl-irt.h
  54 $(nacl-irt.h): $(nacl)/irt.sed \
  55                $(naclsrc)/untrusted/irt/irt.h \
  56                $(naclsrc)/untrusted/irt/irt_dev.h
  57         sed -f $^ > $@.new
  58         mv -f $@.new $@
  59 common-generated += nacl-irt.h
  60 before-compile += $(nacl-irt.h)
  61
  62 $(common-objpfx)nacl-interfaces.v.i: $(nacl)/nacl-interfaces.mk.in \
  63                                      $(nacl)/nacl-interface-list.h
  64 -include $(common-objpfx)nacl-interfaces.v
  65 common-generated += nacl-interfaces.v
  66 before-compile += $(common-objpfx)nacl-interfaces.v
  67
  68 nacl-all-interfaces = $(nacl-mandatory-interfaces) $(nacl-optional-interfaces)
  69 nacl-interface-routines = $(nacl-all-interfaces:%=nacl-interface-%)
  70
  71 define nacl-interface-table-command
  72 (echo '#define INTERFACE_CATEGORY $1'; \
  73  echo '#define INTERFACE_MODULE $(firstword $(subst -, ,$*))'; \
  74  echo '#define INTERFACE_TYPE $(word 2,$(subst -, ,$*))'; \
  75  echo '#define INTERFACE_STRING $(nacl-$*-string)'; \
  76  echo '#include "nacl-interface-table.c"' \
  77 ) > $@T
  78 mv -f $@T $@
  79 endef
  80
  81 nacl-interface-pattern = $(objpfx)nacl-interface-%.c
  82
  83 $(nacl-mandatory-interfaces:%=$(nacl-interface-pattern)): \
  84   $(nacl-interface-pattern): $(nacl)/Makefile $(common-objpfx)nacl-interfaces.v
  85         $(make-target-directory)
  86         $(call nacl-interface-table-command,mandatory)
  87 $(nacl-optional-interfaces:%=$(nacl-interface-pattern)): \
  88   $(nacl-interface-pattern): $(nacl)/Makefile $(common-objpfx)nacl-interfaces.v
  89         $(make-target-directory)
  90         $(call nacl-interface-table-command,optional)
  91
  92 nacl-routines-of = $(filter nacl-interface-$1-%,$(nacl-interface-routines))
  93
  94
  95 # Run the NaCl code validator on binaries after we link them, so the
  96 # build does not succeed with any binary that won't pass validation.
  97 # Moving the file around makes sure that we don't leave a target
  98 # appearing complete after it fails validation.
  99 define after-link
 100 mv -f $1 $1.prevalidation
 101 $(nacl)/nacl-after-link.sh '${READELF}' $1.prevalidation
 102 mv -f $1.prevalidation $1
 103 endef
 104
 105 # The test wrapper script takes care of running things under NaCl's sel_ldr.
 106 test-wrapper-env-only = $(nacl)/nacl-test-wrapper.sh --arch=$(nacl-sdk-arch)
 107 test-wrapper-env = $(test-wrapper-env-only)
 108 test-wrapper = $(test-wrapper-env) --
 109
 110 ifeq ($(subdir),csu)
 111 sysdep_routines += nacl_interface_query nacl_interface_ext_supply \
 112                    nacl-interfaces $(call nacl-routines-of,libc)
 113 endif
 114
 115 ifeq ($(subdir),elf)
 116 sysdep-dl-routines += $(call nacl-routines-of,rtld)
 117 sysdep-rtld-routines += nacl-interfaces $(call nacl-routines-of,rtld)
 118 endif
 119
 120 ifeq ($(subdir),io)
 121 sysdep_routines += xstatconv
 122 endif
 123
 124 ifeq ($(subdir),nptl)
 125 # We do not need any wrappers in libpthread.
 126 libpthread-routines := $(filter-out ptw-%,$(libpthread-routines))
 127 endif
 128
 129 ifeq ($(subdir),misc)
 130 # We reuse the Linux file since the bits match.  The file lives in the
 131 # top-level source tree so we can use it without reference to any
 132 # sysdeps/.../linux/ directories, but it's still a sysdeps decision to
 133 # install it.
 134 sysdep_headers += bits/mman-linux.h
 135
 136 # This defeats sysdeps/gnu/Makefile's addition of sys/mtio.h, which
 137 # we do not want.  This is a total kludge, but it seems no worse for
 138 # now than making the sysdeps/gnu/Makefile code conditional on a
 139 # variable we set here.  If some sysdeps/.../Makefile that is later
 140 # in the list than sysdeps/gnu needed to add to sysdep_headers, this
 141 # would break it.  But sysdeps/gnu is close to last in the list and
 142 # this coming up seems unlikely.
 143 override sysdep_headers := $(sysdep_headers)
 144 endif