mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
ad02e4fe87
Since we don't use suffix rules nor implicit rules in gdb, we can disable them. The advantage is a slightly faster make [1]. Here are some numbers about the speedup. I ran this on my trusty old Intel Q6600, so the time numbers are probably higher than what you'd get on any recent hardware. I ran "make" in the gdb/ directory of an already built repository (configured with --enable-targets=all). I recorded the time of execution (average of 5). I then ran "make -d" and recorded the number of printed lines, which gives a rough idea of the number of operations done. I compared the following configurations, to see the impact of both the empty .SUFFIXES target and the empty pattern rules, as well as running "make -r", which can be considered the "ideal" case. A - baseline B - baseline + .SUFFIXES C - baseline + pattern rules D - baseline + .SUFFIXES + pattern rules E - baseline + make -r config | time (s) | "make -d" ----------------------------- A | 5.74 | 2396643 B | 1.19 | 298469 C | 2.81 | 1266573 D | 1.13 | 245489 E | 1.01 | 163914 We can see that the empty .SUFFIXES target has a bigger impact than the empty pattern rules, but still it doesn't hurt to disable the implicit pattern rules as well. There are still some mentions of implicit rules I can't get rid of in the "make -d" output. For example, it's trying to build .c files from .w files: Looking for an implicit rule for '/home/simark/src/binutils-gdb/gdb/infrun.c'. Trying pattern rule with stem 'infrun'. Trying implicit prerequisite '/home/simark/src/binutils-gdb/gdb/infrun.w'. and trying to build Makefile.in from a bunch of extensions: Looking for an implicit rule for 'Makefile.in'. Trying pattern rule with stem 'Makefile.in'. Trying implicit prerequisite 'Makefile.in.o'. Trying pattern rule with stem 'Makefile.in'. Trying implicit prerequisite 'Makefile.in.c'. Trying pattern rule with stem 'Makefile.in'. Trying implicit prerequisite 'Makefile.in.cc'. ... many more ... If somebody knows how to disable them, we can do it, but at this point the returns are minimal, so it is not that important. I verified that both in-tree and out-of-tree builds work. [1] Switching from explicit rules to pattern rules for files in subdirectories actually made it slower, so this is kind of a way to redeem myself. But it the end it's faster than it was previously, so it was all worth it. :) gdb/ChangeLog: * disable-implicit-rules.mk: New file. * Makefile.in: Include disable-implicit-rules.mk. * data-directory/Makefile.in: Likewise. * gnulib/Makefile.in: Likewise. gdb/doc/ChangeLog: * Makefile.in: Likewise. gdb/gdbserver/ChangeLog: * Makefile.in: Include disable-implicit-rules.mk. gdb/testsuite/ChangeLog: * Makefile.in: Include disable-implicit-rules.mk.
418 lines
12 KiB
Makefile
418 lines
12 KiB
Makefile
# Copyright (C) 2010-2016 Free Software Foundation, Inc.
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# Makefile for building a staged copy of the data-directory.
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# This file is part of GDB.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program 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
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Please keep lists in this file sorted alphabetically, with one item per line.
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# See gdb/Makefile.in for guidelines on ordering files and directories.
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srcdir = @srcdir@
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SYSCALLS_SRCDIR = $(srcdir)/../syscalls
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PYTHON_SRCDIR = $(srcdir)/../python/lib
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GUILE_SRCDIR = $(srcdir)/../guile/lib
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SYSTEM_GDBINIT_SRCDIR = $(srcdir)/../system-gdbinit
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VPATH = $(srcdir):$(SYSCALLS_SRCDIR):$(PYTHON_SRCDIR):$(GUILE_SRCDIR):$(SYSTEM_GDBINIT_SRCDIR)
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XSLTPROC = @XSLTPROC@
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top_srcdir = @top_srcdir@
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top_builddir = @top_builddir@
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prefix = @prefix@
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exec_prefix = @exec_prefix@
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datarootdir = @datarootdir@
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datadir = @datadir@
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SHELL = @SHELL@
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LN_S = @LN_S@
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INSTALL = @INSTALL@
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INSTALL_DATA = @INSTALL_DATA@
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INSTALL_DIR = $(SHELL) $(srcdir)/../../mkinstalldirs
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GDB_DATADIR = @GDB_DATADIR@
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SYSCALLS_DIR = syscalls
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SYSCALLS_INSTALL_DIR = $(DESTDIR)$(GDB_DATADIR)/$(SYSCALLS_DIR)
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GEN_SYSCALLS_FILES = \
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aarch64-linux.xml \
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amd64-linux.xml \
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arm-linux.xml \
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i386-linux.xml \
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mips-n32-linux.xml \
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mips-n64-linux.xml \
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mips-o32-linux.xml \
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ppc-linux.xml \
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ppc64-linux.xml \
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s390-linux.xml \
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s390x-linux.xml \
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sparc-linux.xml \
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sparc64-linux.xml
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SYSCALLS_FILES = gdb-syscalls.dtd freebsd.xml $(GEN_SYSCALLS_FILES)
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PYTHON_DIR = python
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PYTHON_INSTALL_DIR = $(DESTDIR)$(GDB_DATADIR)/$(PYTHON_DIR)
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PYTHON_FILE_LIST = \
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gdb/__init__.py \
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gdb/FrameDecorator.py \
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gdb/FrameIterator.py \
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gdb/frames.py \
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gdb/printing.py \
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gdb/prompt.py \
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gdb/types.py \
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gdb/unwinder.py \
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gdb/xmethod.py \
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gdb/command/__init__.py \
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gdb/command/explore.py \
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gdb/command/frame_filters.py \
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gdb/command/pretty_printers.py \
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gdb/command/prompt.py \
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gdb/command/type_printers.py \
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gdb/command/unwinders.py \
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gdb/command/xmethods.py \
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gdb/function/__init__.py \
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gdb/function/as_string.py \
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gdb/function/caller_is.py \
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gdb/function/strfns.py \
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gdb/printer/__init__.py \
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gdb/printer/bound_registers.py
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@HAVE_PYTHON_TRUE@PYTHON_FILES = $(PYTHON_FILE_LIST)
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@HAVE_PYTHON_FALSE@PYTHON_FILES =
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GUILE_DIR = guile
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GUILE_INSTALL_DIR = $(DESTDIR)$(GDB_DATADIR)/$(GUILE_DIR)
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GUILE_SOURCE_FILES = \
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./gdb.scm \
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gdb/boot.scm \
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gdb/experimental.scm \
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gdb/init.scm \
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gdb/iterator.scm \
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gdb/printing.scm \
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gdb/support.scm \
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gdb/types.scm
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GUILE_COMPILED_FILES = \
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./gdb.go \
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gdb/experimental.go \
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gdb/iterator.go \
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gdb/printing.go \
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gdb/support.go \
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gdb/types.go
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@HAVE_GUILE_TRUE@GUILE_FILES = $(GUILE_SOURCE_FILES) $(GUILE_COMPILED_FILES)
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@HAVE_GUILE_FALSE@GUILE_FILES =
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GUILD = @GUILD@
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GUILD_TARGET_FLAG = @GUILD_TARGET_FLAG@
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# Flags passed to 'guild compile'.
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# Note: We can't use -Wunbound-variable because all the variables
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# defined in C aren't visible when we compile.
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# Note: To work around a guile 2.0.5 issue (it can't find gdb/init.scm even if
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# we pass -L <dir>) we have to compile in the directory containing gdb.scm.
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# We still need to pass "-L ." so that other modules are found.
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GUILD_COMPILE_FLAGS = \
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$(GUILD_TARGET_FLAG) \
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-Warity-mismatch -Wformat -Wunused-toplevel \
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-L .
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SYSTEM_GDBINIT_DIR = system-gdbinit
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SYSTEM_GDBINIT_INSTALL_DIR = $(DESTDIR)$(GDB_DATADIR)/$(SYSTEM_GDBINIT_DIR)
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SYSTEM_GDBINIT_FILES = \
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elinos.py \
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wrs-linux.py
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FLAGS_TO_PASS = \
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"prefix=$(prefix)" \
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"exec_prefix=$(exec_prefix)" \
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"infodir=$(infodir)" \
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"datarootdir=$(datarootdir)" \
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"docdir=$(docdir)" \
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"htmldir=$(htmldir)" \
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"pdfdir=$(pdfdir)" \
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"libdir=$(libdir)" \
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"mandir=$(mandir)" \
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"datadir=$(datadir)" \
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"includedir=$(includedir)" \
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"against=$(against)" \
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"DESTDIR=$(DESTDIR)" \
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"AR=$(AR)" \
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"AR_FLAGS=$(AR_FLAGS)" \
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"CC=$(CC)" \
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"CFLAGS=$(CFLAGS)" \
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"CXX=$(CXX)" \
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"CXXFLAGS=$(CXXFLAGS)" \
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"DLLTOOL=$(DLLTOOL)" \
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"LDFLAGS=$(LDFLAGS)" \
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"RANLIB=$(RANLIB)" \
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"MAKEINFO=$(MAKEINFO)" \
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"MAKEHTML=$(MAKEHTML)" \
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"MAKEHTMLFLAGS=$(MAKEHTMLFLAGS)" \
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"INSTALL=$(INSTALL)" \
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"INSTALL_PROGRAM=$(INSTALL_PROGRAM)" \
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"INSTALL_DATA=$(INSTALL_DATA)" \
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"RUNTEST=$(RUNTEST)" \
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"RUNTESTFLAGS=$(RUNTESTFLAGS)"
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.PHONY: all
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all: stamp-syscalls stamp-python stamp-guile stamp-system-gdbinit
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%.xml: @MAINTAINER_MODE_TRUE@ %.xml.in apply-defaults.xsl linux-defaults.xml.in
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$(XSLTPROC) -o $(SYSCALLS_SRCDIR)/$@ $(SYSCALLS_SRCDIR)/apply-defaults.xsl\
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$(SYSCALLS_SRCDIR)/$@.in
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.PHONY: syscall-xml
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syscall-xml: $(GEN_SYSCALLS_FILES)
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.PHONY: clean-syscall-xml
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# Only clean files generated XML files.
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clean-syscall-xml:
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files='$(GEN_SYSCALLS_FILES)' ; \
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for file in $$files; do \
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rm -f "$(SYSCALLS_SRCDIR)/$$file"; \
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done
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# For portability's sake, we need to handle systems that don't have
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# symbolic links.
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stamp-syscalls: Makefile $(SYSCALLS_FILES)
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rm -rf ./$(SYSCALLS_DIR)
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mkdir ./$(SYSCALLS_DIR)
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files='$(SYSCALLS_FILES)' ; \
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for file in $$files ; do \
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f=$(SYSCALLS_SRCDIR)/$$file ; \
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if test -f $$f ; then \
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$(INSTALL_DATA) $$f ./$(SYSCALLS_DIR) ; \
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fi ; \
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done
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touch $@
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.PHONY: clean-syscalls
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clean-syscalls:
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rm -rf $(SYSCALLS_DIR)
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rm -f stamp-syscalls
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# This target is responsible for properly installing the syscalls'
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# XML files in the system.
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.PHONY: install-syscalls
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install-syscalls:
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$(INSTALL_DIR) $(SYSCALLS_INSTALL_DIR)
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files='$(SYSCALLS_FILES)' ; \
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for file in $$files; do \
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f=$(SYSCALLS_SRCDIR)/$$file ; \
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if test -f $$f ; then \
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$(INSTALL_DATA) $$f $(SYSCALLS_INSTALL_DIR) ; \
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fi ; \
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done
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.PHONY: uninstall-syscalls
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uninstall-syscalls:
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files='$(SYSCALLS_FILES)' ; \
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for file in $$files ; do \
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slashdir=`echo "/$$file" | sed 's,/[^/]*$$,,'` ; \
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rm -f $(SYSCALLS_INSTALL_DIR)/$$file ; \
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while test "x$$file" != "x$$slashdir" ; do \
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rmdir 2>/dev/null "$(SYSCALLS_INSTALL_DIR)$$slashdir" ; \
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file="$$slashdir" ; \
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slashdir=`echo "$$file" | sed 's,/[^/]*$$,,'` ; \
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done \
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done
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stamp-python: Makefile $(PYTHON_FILES)
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rm -rf ./$(PYTHON_DIR)
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files='$(PYTHON_FILES)' ; \
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if test "x$$files" != x ; then \
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for file in $$files ; do \
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dir=`echo "$$file" | sed 's,/[^/]*$$,,'` ; \
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$(INSTALL_DIR) ./$(PYTHON_DIR)/$$dir ; \
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$(INSTALL_DATA) $(PYTHON_SRCDIR)/$$file ./$(PYTHON_DIR)/$$dir ; \
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done ; \
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fi
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touch $@
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.PHONY: clean-python
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clean-python:
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rm -rf $(PYTHON_DIR)
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rm -f stamp-python
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.PHONY: install-python
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install-python:
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files='$(PYTHON_FILES)' ; \
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if test "x$$files" != x ; then \
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for file in $$files ; do \
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dir=`echo "$$file" | sed 's,/[^/]*$$,,'` ; \
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$(INSTALL_DIR) $(PYTHON_INSTALL_DIR)/$$dir ; \
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$(INSTALL_DATA) ./$(PYTHON_DIR)/$$file $(PYTHON_INSTALL_DIR)/$$dir ; \
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done ; \
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fi
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.PHONY: uninstall-python
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uninstall-python:
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files='$(PYTHON_FILES)' ; \
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if test "x$$files" != x ; then \
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for file in $$files ; do \
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slashdir=`echo "/$$file" | sed 's,/[^/]*$$,,'` ; \
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rm -f $(PYTHON_INSTALL_DIR)/$$file ; \
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while test "x$$file" != "x$$slashdir" ; do \
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rmdir 2>/dev/null "$(PYTHON_INSTALL_DIR)$$slashdir" ; \
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file="$$slashdir" ; \
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slashdir=`echo "$$file" | sed 's,/[^/]*$$,,'` ; \
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done \
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done ; \
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fi
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stamp-guile: Makefile $(GUILE_SOURCE_FILES)
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rm -rf ./$(GUILE_DIR)
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if test "x$(GUILE_FILES)" != x ; then \
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files='$(GUILE_SOURCE_FILES)' ; \
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for file in $$files ; do \
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dir=`echo "$$file" | sed 's,/[^/]*$$,,'` ; \
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$(INSTALL_DIR) ./$(GUILE_DIR)/$$dir ; \
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$(INSTALL_DATA) $(GUILE_SRCDIR)/$$file ./$(GUILE_DIR)/$$dir ; \
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done ; \
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files='$(GUILE_COMPILED_FILES)' ; \
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cd ./$(GUILE_DIR) ; \
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for go in $$files ; do \
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source="`echo $$go | sed 's/\.go$$/.scm/'`" ; \
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echo $(GUILD) compile $(GUILD_COMPILE_FLAGS) -o "$$go" "$$source" ; \
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$(GUILD) compile $(GUILD_COMPILE_FLAGS) -o "$$go" "$$source" || exit 1 ; \
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done ; \
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fi
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touch $@
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.PHONY: clean-guile
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clean-guile:
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rm -rf $(GUILE_DIR)
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rm -f stamp-guile
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.PHONY: install-guile
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install-guile:
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files='$(GUILE_FILES)' ; \
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if test "x$$files" != x ; then \
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for file in $$files ; do \
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dir=`echo "$$file" | sed 's,/[^/]*$$,,'` ; \
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$(INSTALL_DIR) $(GUILE_INSTALL_DIR)/$$dir ; \
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$(INSTALL_DATA) ./$(GUILE_DIR)/$$file $(GUILE_INSTALL_DIR)/$$dir ; \
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done ; \
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fi
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.PHONY: uninstall-guile
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uninstall-guile:
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files='$(GUILE_FILES)' ; \
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if test "x$$files" != x ; then \
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for file in $$files ; do \
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slashdir=`echo "/$$file" | sed 's,/[^/]*$$,,'` ; \
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rm -f $(GUILE_INSTALL_DIR)/$$file ; \
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while test "x$$file" != "x$$slashdir" ; do \
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rmdir 2>/dev/null "$(GUILE_INSTALL_DIR)$$slashdir" ; \
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file="$$slashdir" ; \
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slashdir=`echo "$$file" | sed 's,/[^/]*$$,,'` ; \
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done \
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done ; \
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fi
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stamp-system-gdbinit: Makefile $(SYSTEM_GDBINIT_FILES)
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rm -rf ./$(SYSTEM_GDBINIT_DIR)
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mkdir ./$(SYSTEM_GDBINIT_DIR)
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files='$(SYSTEM_GDBINIT_FILES)' ; \
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for file in $$files ; do \
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f=$(SYSTEM_GDBINIT_SRCDIR)/$$file ; \
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if test -f $$f ; then \
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$(INSTALL_DATA) $$f ./$(SYSTEM_GDBINIT_DIR) ; \
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fi ; \
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done
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touch $@
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.PHONY: clean-system-gdbinit
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clean-system-gdbinit:
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rm -rf $(SYSTEM_GDBINIT_DIR)
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rm -f stamp-system-gdbinit
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.PHONY: install-system-gdbinit
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install-system-gdbinit:
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$(INSTALL_DIR) $(SYSTEM_GDBINIT_INSTALL_DIR)
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files='$(SYSTEM_GDBINIT_FILES)' ; \
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for file in $$files; do \
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f=$(SYSTEM_GDBINIT_SRCDIR)/$$file ; \
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if test -f $$f ; then \
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$(INSTALL_DATA) $$f $(SYSTEM_GDBINIT_INSTALL_DIR) ; \
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fi ; \
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done
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.PHONY: uninstall-system-gdbinit
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uninstall-system-gdbinit:
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files='$(SYSTEM_GDBINIT_FILES)' ; \
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for file in $$files ; do \
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slashdir=`echo "/$$file" | sed 's,/[^/]*$$,,'` ; \
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rm -f $(SYSTEM_GDBINIT_INSTALL_DIR)/$$file ; \
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while test "x$$file" != "x$$slashdir" ; do \
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rmdir 2>/dev/null "$(SYSTEM_GDBINIT_INSTALL_DIR)$$slashdir" ; \
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file="$$slashdir" ; \
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slashdir=`echo "$$file" | sed 's,/[^/]*$$,,'` ; \
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done \
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done
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# Traditionally "install" depends on "all". But it may be useful
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# not to; for example, if the user has made some trivial change to a
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# source file and doesn't care about rebuilding or just wants to save the
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# time it takes for make to check that all is up to date.
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# install-only is intended to address that need.
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.PHONY: install
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install: all
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@$(MAKE) $(FLAGS_TO_PASS) install-only
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.PHONY: install-only
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install-only: install-syscalls install-python install-guile \
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install-system-gdbinit
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.PHONY: uninstall
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uninstall: uninstall-syscalls uninstall-python uninstall-guile \
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uninstall-system-gdbinit
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.PHONY: clean
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clean: clean-syscalls clean-python clean-guile clean-system-gdbinit
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.PHONY: maintainer-clean realclean distclean
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maintainer-clean realclean distclean: clean
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rm -f Makefile
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.PHONY: check installcheck info dvi pdf html
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.PHONY: install-info install-pdf install-html clean-info
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check installcheck:
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info dvi pdf html:
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install-info install-pdf install-html:
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clean-info:
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# GNU Make has an annoying habit of putting *all* the Makefile variables
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# into the environment, unless you include this target as a circumvention.
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# Rumor is that this will be fixed (and this target can be removed)
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# in GNU Make 4.0.
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.NOEXPORT:
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# GNU Make 3.63 has a different problem: it keeps tacking command line
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# overrides onto the definition of $(MAKE). This variable setting
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# will remove them.
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MAKEOVERRIDES=
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Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
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cd $(top_builddir) && $(MAKE) data-directory/Makefile
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# Disable implicit make rules.
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include $(srcdir)/../disable-implicit-rules.mk
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