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# Copyright (C) 1991,1992,1993,1994,1995,1996,1997,1998,1999,2003,2006,2008,2009 # 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 Lesser General Public # License as published by the Free Software Foundation; either # version 2.1 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 # Lesser General Public License for more details. # You should have received a copy of the GNU Lesser General Public # License along with the GNU C Library; 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)/generic/ $(common-objpfx),\ $(dir $(firstword $(wildcard $(+sysdep_dirs:%=%/bits/local_lim.h)))))) ifneq (,$(wildcard $(sysincludedir)/sys/param.h)) mk-local_lim-CFLAGS += -DHAVE_SYS_PARAM_H endif ifneq (,$(wildcard $(sysincludedir)/sys/limits.h)) mk-local_lim-CFLAGS += -DHAVE_SYS_LIMITS_H endif ifneq (,$(wildcard $(sysincludedir)/limits.h)) mk-local_lim-CFLAGS += -DHAVE_LIMITS_H endif $(common-objpfx)bits/local_lim.h: $(common-objpfx)mk-local_lim $(dir $<)$(notdir $<) > $@-t mv -f $@-t $@ $(common-objpfx)mk-local_lim: $(sysdep_dir)/unix/mk-local_lim.c $(common-objdir-compile) before-compile += $(common-objpfx)bits/local_lim.h common-generated += bits/local_lim.h mk-local_lim endif ifeq (,$(filter-out $(sysdep_dir)/generic/ $(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 $(make-target-directory) (echo '#ifndef _SYS_PARAM_H'; \ echo '#define _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 > $@-t \ -e 's@$(sysincludedir)/sys/param.h@@' \ -e 's@^.*:@@' \ -e 's@$<@@g' \ -e 's@$(sysincludedir)/*@@g' \ -e 's@\\$$@@' \ -e 's@^@sys/param.h-includes := $$(sys/param.h-includes) @' mv $@-t $@ # 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)/% $(make-target-directory) # 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)/generic/ $(common-objpfx),\ $(dir $(firstword $(wildcard $(+sysdep_dirs:%=%/bits/errno.h)))))) # These need to exist before any compiling is done, # so cpp doesn't instead find the generic versions. before-compile := $(before-compile) $(common-objpfx)bits/errno.h $(common-objpfx)bits/errno.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) 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)/generic/ $(common-objpfx),\ $(dir $(firstword $(wildcard $(+sysdep_dirs:%=%/bits/ioctls.h)))))) before-compile := $(before-compile) $(common-objpfx)bits/ioctls.h $(common-objpfx)bits/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 $(common-objdir-compile) $(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 $@ bits_termios.h := $(firstword $(wildcard $(+sysdep_dirs:%=%/bits/termios.h))) ifeq ($(bits_termios.h),$(sysdep_dir)/generic/bits/termios.h) bits_termios.h := # Ignore the generic version. endif # If there is a system-specific <bits/termios.h> file, we want to omit # all the symbols it defines from ioctls. Otherwise, both # <bits/ioctls.h> and <bits/termios.h> would define them. The # system-specific <bits/termios.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 $<) $(bits_termios.h) \ $(..)sysdeps/generic/sys/ttydefaults.h; \ echo NULL) \ | sort | uniq`" \ | sort | uniq | tr '\012' ' ' > $@-tmp mv $@-tmp $@ common-generated := $(common-generated) \ bits/ioctls.h ioctls make-ioctls make-ioctls.c endif ifeq (,$(filter-out $(sysdep_dir)/generic/ $(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) $(make-target-directory) 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-\(/\*[^*]*\)$$-\1\*/-' \ > $@-tmp mv $@-tmp $@ before-compile += $(common-objpfx)sys/syscall.h common-generated += sys/syscall.h endif endif ifndef inhibit-unix-syscalls # Sysdep dirs unix/... can contain a file syscalls.list, # which specifies objects to be compiled as simple Unix system calls. -include $(common-objpfx)sysd-syscalls ifeq (misc,$(subdir)) sysdep_routines += $(unix-extra-syscalls) ifdef unix-stub-syscalls # The system call entry points in this list are supposed to be additional # functions not overriding any other sysdeps/.../call.c implementation, but # their system call numbers are unavailable in the kernel headers we're # using. Instead of a system call stub, these get a function that fails # with ENOSYS. We just generate a single module defining one function and # making all these entry point names aliases for it. sysdep_routines += stub-syscalls $(objpfx)stub-syscalls.c: $(common-objpfx)sysd-syscalls \ $(..)sysdeps/unix/Makefile $(make-target-directory) (for call in $(unix-stub-syscalls); do \ echo "#define $$call RENAMED_$$call"; \ done; \ echo '#include <errno.h>'; \ for call in $(unix-stub-syscalls); do \ echo "#undef $$call"; \ done; \ echo 'long int _no_syscall (void)'; \ echo '{ __set_errno (ENOSYS); return -1L; }'; \ for call in $(unix-stub-syscalls); do \ case $$call in \ *@@*) ver=$${call##*@}; call=$${call%%*@}; \ echo "strong_alias (_no_syscall, $${call}_$${ver})"; \ echo "default_symbol_version \ ($${call}_$${ver}, $$call, $$ver);" ;; \ *@@*) ver=$${call##*@}; call=$${call%%*@}; \ echo "strong_alias (_no_syscall, $${call}_$${ver})"; \ echo "symbol_version ($${call}_$${ver}, $$call, $$ver);" ;; \ *) echo "weak_alias (_no_syscall, $$call)"; \ echo "stub_warning ($$call)"; \ echo "weak_alias (_no_syscall, __GI_$$call)" ;; \ esac; \ echo '#include <stub-tag.h>'; \ done) > $@T mv -f $@T $@ generated += stub-syscalls.c endif endif # This is the end of the pipeline for compiling the syscall stubs. # The stdin is assembler with cpp using sysdep.h macros. compile-syscall = $(COMPILE.S) -o $@ -x assembler-with-cpp - \ $(compile-mkdep-flags) ifndef avoid-generated $(common-objpfx)sysd-syscalls: $(..)sysdeps/unix/make-syscalls.sh \ $(wildcard $(+sysdep_dirs:%=%/syscalls.list)) for dir in $(+sysdep_dirs); do \ test -f $$dir/syscalls.list && \ { sysdirs='$(sysdirs)' \ asm_CPP='$(COMPILE.S) -E -x assembler-with-cpp' \ $(SHELL) $(dir $<)$(notdir $<) $$dir || exit 1; }; \ test $$dir = $(..)sysdeps/unix && break; \ done > $@T mv -f $@T $@ endif # The $(bppfx)syscall.ob objects depend on s-proto-bp.d, which are # generated to specify dependencies generated BP stubs have on headers. # These deps use file names relative to a subdir, so don't # include them in the parent directory. ifneq (,$(filter $(unix-syscalls),$(routines) $(sysdep_routines) $(aux))) ifndef no_deps -include $(common-objpfx)s-proto-bp.d endif endif $(common-objpfx)s-%.d: $(..)sysdeps/unix/s-%.S \ $(wildcard $(+sysdep_dirs:%=%/syscalls.list)) $(+make-deps) common-generated += s-proto-bp.d postclean-generated += sysd-syscalls endif
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