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In <https://sourceware.org/ml/libc-alpha/2014-01/msg00196.html> I noted it was necessary to add includes of Makeconfig early in various subdirectory makefiles for the tests-special variable settings added by that patch to be conditional on configuration information. No-one commented on the general question there of whether Makeconfig should always be included immediately after the definition of subdir. This patch implements that early inclusion of Makeconfig in each directory (which is a lot easier than consistent placement of includes of Rules). Includes are added if needed, or moved up if already present. Subdirectory "all:" targets are removed, since Makeconfig provides one. There is potential for further cleanups I haven't done. Rules and Makerules have code such as ifneq "$(findstring env,$(origin headers))" "" headers := endif to override to empty any value of various variables that came from the environment. I think there is a case for Makeconfig setting all the subdirectory variables (other than subdir) to empty to ensure no outside value is going to take effect if a subdirectory fails to define a variable. (A list of such variables, possibly out of date and incomplete, is in manual/maint.texi.) Rules and Makerules would give errors if Makeconfig hadn't already been included, instead of including it themselves. The special code to override values coming from the environment would then be obsolete and could be removed. Tested x86_64, including that installed binaries are identical before and after the patch. * argp/Makefile: Include Makeconfig immediately after defining subdir. * assert/Makefile: Likewise. * benchtests/Makefile: Likewise. * catgets/Makefile: Likewise. * conform/Makefile: Likewise. * crypt/Makefile: Likewise. * csu/Makefile: Likewise. (all): Remove target. * ctype/Makefile: Include Makeconfig immediately after defining subdir. * debug/Makefile: Likewise. * dirent/Makefile: Likewise. * dlfcn/Makefile: Likewise. * gmon/Makefile: Likewise. * gnulib/Makefile: Likewise. * grp/Makefile: Likewise. * gshadow/Makefile: Likewise. * hesiod/Makefile: Likewise. * hurd/Makefile: Likewise. (all): Remove target. * iconvdata/Makefile: Include Makeconfig immediately after defining subdir. * inet/Makefile: Likewise. * intl/Makefile: Likewise. * io/Makefile: Likewise. * libio/Makefile: Likewise. (all): Remove target. * locale/Makefile: Include Makeconfig immediately after defining subdir. * login/Makefile: Likewise. * mach/Makefile: Likewise. (all): Remove target. * malloc/Makefile: Include Makeconfig immediately after defining subdir. (all): Remove target. * manual/Makefile: Include Makeconfig immediately after defining subdir. * math/Makefile: Likewise. * misc/Makefile: Likewise. * nis/Makefile: Likewise. * nss/Makefile: Likewise. * po/Makefile: Likewise. (all): Remove target. * posix/Makefile: Include Makeconfig immediately after defining subdir. * pwd/Makefile: Likewise. * resolv/Makefile: Likewise. * resource/Makefile: Likewise. * rt/Makefile: Likewise. * setjmp/Makefile: Likewise. * shadow/Makefile: Likewise. * signal/Makefile: Likewise. * socket/Makefile: Likewise. * soft-fp/Makefile: Likewise. * stdio-common/Makefile: Likewise. * stdlib/Makefile: Likewise. * streams/Makefile: Likewise. * string/Makefile: Likewise. * sunrpc/Makefile: Likewise. (all): Remove target. * sysvipc/Makefile: Include Makeconfig immediately after defining subdir. * termios/Makefile: Likewise. * time/Makefile: Likewise. * timezone/Makefile: Likewise. (all): Remove target. * wcsmbs/Makefile: Include Makeconfig immediately after defining subdir. * wctype/Makefile: Likewise. libidn/ChangeLog: * Makefile: Include Makeconfig immediately after defining subdir. localedata/ChangeLog: * Makefile: Include Makeconfig immediately after defining subdir. (all): Remove target. nptl/ChangeLog: * Makefile: Include Makeconfig immediately after defining subdir. nptl_db/ChangeLog: * Makefile: Include Makeconfig immediately after defining subdir.
168 lines
5.9 KiB
Makefile
168 lines
5.9 KiB
Makefile
# Copyright (C) 1991-2014 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <http://www.gnu.org/licenses/>.
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subdir := mach
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include ../Makeconfig
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headers = mach_init.h mach.h mach_error.h mach-shortcuts.h mach/mach_traps.h \
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$(interface-headers) mach/mach.h mach/mig_support.h mach/error.h \
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$(lock-headers) machine-sp.h
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lock = spin-solid spin-lock mutex-init mutex-solid
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lock-headers = lock-intern.h machine-lock.h spin-lock.h
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routines = $(mach-syscalls) $(mach-shortcuts) \
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mach_init mig_strncpy msg \
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mig-alloc mig-dealloc mig-reply \
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msg-destroy msgserver \
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mach_error errstring error_compat errsystems \
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devstream setup-thread $(lock)
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# The RPC interfaces go in a separate library.
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interface-library := libmachuser
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# We produce mach_interface.h from mach.defs because there is already a
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# <mach/mach.h> that is not the interface header (thanks CMU).
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mach-interface-list := $(patsubst mach,mach_interface,$(mach-interface-list))
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mach/mach_interface.defs = mach/mach.defs
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# Similarly for memory_object_user vs. memory_object
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mach-interface-list := $(patsubst memory_object,memory_object_user,\
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$(mach-interface-list))
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mach/memory_object_user.defs = mach/memory_object.defs
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user-interfaces := $(addprefix mach/,$(mach-interface-list) \
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mach_port mach_host exc \
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)\
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$(addprefix device/,device device_request)
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server-interfaces := mach/exc
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# Clear any environment value.
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generated =
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# Translate GNU names for CPUs into the names used in Mach header files.
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mach-machine = $(patsubst powerpc,ppc,$(base-machine))
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# Define mach-syscalls and sysno-*.
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ifndef inhibit_mach_syscalls
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-include $(objpfx)mach-syscalls.mk
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endif
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$(objpfx)mach-syscalls.mk: syscalls.awk Makefile
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# Go kludges!!!
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$(make-target-directory)
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# We must use $(CFLAGS) to get -O flags that affect #if's in header files.
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echo '#include <mach/syscall_sw.h>' | \
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$(CC) $(CFLAGS) $(CPPFLAGS) -E -MD -MP -MF $@-dep -MT $@ \
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-x c-header - \
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-D_MACH_`echo $(mach-machine) | tr a-z A-Z`_SYSCALL_SW_H_=1 | \
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sed -n -e 's/^kernel_trap(\(.*\),\([-0-9]*\),\([0-9]*\))$$/\1 \2 \3/p'\
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| $(AWK) -f $< > $@-new
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ifneq (,$(objpfx))
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sed $(sed-remove-objpfx) $@-dep >> $@-new
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else
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cat $@-dep >> $@-new
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endif
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rm -f $@-dep
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mv -f $@-new $@
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generated += mach-syscalls.mk
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ifndef mach-syscalls
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# We cannot make the deps properly until we know how to make the system
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# call functions, and for that we must know what they all are.
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no_deps=t
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else
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$(mach-syscalls:%=$(objpfx)%.S): $(objpfx)%.S: $(objpfx)mach-syscalls.mk
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(echo '#include <sysdep.h>'; \
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echo 'kernel_trap (__$*,$(sysno-$*),$(nargs-$*))'; \
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echo 'weak_alias (__$*, $*)') > $@-new
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mv -f $@-new $@
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generated += $(mach-syscalls:=.S)
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endif # mach-syscalls
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# These syscalls that look like RPCs actually have no RPC equivalents.
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mach-shortcuts := $(filter-out device_writev_request \
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device_read_overwrite_request \
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device_read_overwrite \
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vm_read_overwrite \
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thread_switch \
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,\
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$(patsubst syscall_%,%,$(filter syscall_%,$(mach-syscalls))))
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ifndef mach-shortcuts
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# Forget about mach_interface.defs for this run. On the next run,
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# $(mach-shortcuts) will be set, and that will change how
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# mach_interface.defs is processed: it will get the -D flags below.
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user-interfaces := $(filter-out $(mach-interface-list:%=mach/%) \
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mach/mach_port mach/mach_host mach/mach4 \
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device/device_request,\
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$(user-interfaces))
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endif
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# For some reason, the calls in this file are `protected' by an ifdef.
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MIGFLAGS-mach/mach4=-DMACH_PCSAMPLE
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# Make the MiG stubs for $(mach-shortcuts) be CALL_rpc.
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migdefines += $(foreach call,$(mach-shortcuts),-D$(call)=$(call)_rpc)
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$(mach-interface-list:%=mach/%.uh) \
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mach/mach_host.uh mach/mach_port.uh: $(objpfx)mach-syscalls.mk
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ifdef mach-shortcuts
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$(mach-shortcuts:%=$(objpfx)%.c): $(objpfx)%.c: shortcut.awk \
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$(objpfx)RPC_%_rpc.c
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$(AWK) -v alias=$* -v call=__$* -v rpc=__$*_rpc \
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-v syscall=__syscall_$* -f $^ > $@-new
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mv -f $@-new $@
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generated += $(mach-shortcuts:%=%.c)
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endif # mach-shortcuts
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# Generate mach-shortcuts.h, which will contain the prototypes for the
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# shortcutted kernel RPC functions.
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$(objpfx)mach-shortcuts.h: $(mach-interface-list:%=$(objpfx)mach/%.h) \
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$(objpfx)mach/mach_host.h \
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$(objpfx)mach/mach_port.h
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# The first line gets us one paragraph per line, with @s separating real lines.
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# The second line selects paragraphs for the shortcutted functions.
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# The third line removes `_rpc' from the names and reconstitutes the lines.
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cat $^ | tr \\012 @ | sed s/@@/@%/g | tr % \\012 \
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| grep '^/\* Routine [a-z0-9_]*_rpc \*/' \
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| sed 's/_rpc//g' | tr @ \\012 > $@-new
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mv -f $@-new $@
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generated += mach-shortcuts.h
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before-compile += $(objpfx)mach-shortcuts.h
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include Machrules
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include ../Rules
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# A gcc bug prevents the generated file from working properly,
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# so we have one in the distribution for the time being.
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generated += errsystems.c
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$(objpfx)errsystems.c: errsystems.awk err_*.sub \
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$(wildcard $(addsuffix /err_*.sub,$(+sysdep_dirs)))
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$(AWK) -v subsys='$(filter-out $<,$^)' -f $^ > $@.n
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mv -f $@.n $@
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# Convenient target to update all the generated source files.
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.PHONY: generated
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generated: $(addprefix $(common-objpfx),$(common-generated)) \
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$(addprefix $(objpfx),$(generated))
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.PHONY: mach-before-compile
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mach-before-compile: $(mach-before-compile)
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