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Simon Marchi 470dd0a647 Makefile: Replace explicit subdir rules with pattern rules
When adding a .c file in subdirectory (e.g. mi/), the current practice
is to add an explicit rule, such as:

  mi-cmd-break.o: $(srcdir)/mi/mi-cmd-break.c
          $(COMPILE) $(srcdir)/mi/mi-cmd-break.c
          $(POSTCOMPILE)

I find it a bit verbose and cumbersome.  Since we now require GNU make,
we can change those rules with pattern rules, one for each subdirectory.
For example, the following rule works for all files under mi:

  %.o: $(srcdir)/mi/%.c
          $(COMPILE) $<
          $(POSTCOMPILE)

Those pattern rules assume that the source and target files have the
same stem (foo.c and foo.o).  In one case, common-agent.o is generated
from common/agent.c, to avoid a conflict with the agent.o in gdb/.  In
this case, I kept the explicit rule, which takes precedence over the
pattern rule.  We could also rename common/agent.c to
common/common-agent.c to get rid of the special case and still avoid the
clash, as it is done with common/common-regcache.c, for example.

This strategy was the least intrusive I found, as it only requires
changing the rules, not the target names.

I also considered two other solutions, which I did not like because I
would have had to change target names a bit everywhere.

  - Replicate the source directory structure in the build directory,
    which would generate common/agent.o from common/agent.c.  However,
    something was not right with the dependency tracking (the .deps
    directory).  It's probably not hard to fix, but I did not
    investigate further.
  - Name the object files after the directory they are in, so that
    common/agent.c would generate common_agent.c.

GDBserver can benefit from the same treatment, but I'll do it in another
patch.

Built-tested with --enable-targets=all.

New in v2:

  - Regroup pattern rules for .c -> .o compilation in a single place.
  - Add comment about common-agent.o.

gdb/ChangeLog:

	(PYTHON_CFLAGS): Move up.
	(%.o: $(srcdir)/arch/%.c): New rule.
	(%.o: $(srcdir)/cli/%.c): New rule.
	(%.o: $(srcdir)/common/%.c): New rule.
	(%.o: $(srcdir)/compile/%.c): New rule.
	(%.o: $(srcdir)/gdbtk/generic/%.c): New rule.
	(%.o: $(srcdir)/guile/%.c): New rule.
	(%.o: $(srcdir)/mi/%.c): New rule.
	(%.o: $(srcdir)/nat/%.c): New rule.
	(%.o: $(srcdir)/python/%.c): New rule.
	(%.o: $(srcdir)/target/%.c): New rule.
	(%.o: $(srcdir)/tui/%.c): New rule.
	(cli-cmds.o): Remove.
	(cli-decode.o): Likewise.
	(cli-dump.o): Likewise.
	(cli-interp.o): Likewise.
	(cli-logging.o): Likewise.
	(cli-script.o): Likewise.
	(cli-setshow.o): Likewise.
	(cli-utils.o): Likewise.
	(compile.o): Likewise.
	(compile-c-types.o): Likewise.
	(compile-c-symbols.o): Likewise.
	(compile-object-load.o): Likewise.
	(compile-object-run.o): Likewise.
	(compile-loc2c.o): Likewise.
	(compile-c-support.o): Likewise.
	(gdbtk.o): Likewise.
	(gdbtk-bp.o): Likewise.
	(gdbtk-cmds.o): Likewise.
	(gdbtk-hooks.o): Likewise.
	(gdbtk-interp.o): Likewise.
	(gdbtk-main.o): Likewise.
	(gdbtk-register.o): Likewise.
	(gdbtk-stack.o): Likewise.
	(gdbtk-varobj.o): Likewise.
	(gdbtk-wrapper.o): Likewise.
	(mi-cmd-break.o): Likewise.
	(mi-cmd-catch.o): Likewise.
	(mi-cmd-disas.o): Likewise.
	(mi-cmd-env.o): Likewise.
	(mi-cmd-file.o): Likewise.
	(mi-cmd-info.o): Likewise.
	(mi-cmds.o): Likewise.
	(mi-cmd-stack.o): Likewise.
	(mi-cmd-target.o): Likewise.
	(mi-cmd-var.o): Likewise.
	(mi-console.o): Likewise.
	(mi-getopt.o): Likewise.
	(mi-interp.o): Likewise.
	(mi-main.o): Likewise.
	(mi-out.o): Likewise.
	(mi-parse.o): Likewise.
	(mi-symbol-cmds.o): Likewise.
	(mi-common.o): Likewise.
	(signals.o): Likewise.
	(common-utils.o): Likewise.
	(gdb_vecs.o): Likewise.
	(xml-utils.o): Likewise.
	(ptid.o): Likewise.
	(buffer.o): Likewise.
	(filestuff.o): Likewise.
	(format.o): Likewise.
	(vec.o): Likewise.
	(print-utils.o): Likewise.
	(rsp-low.o): Likewise.
	(errors.o): Likewise.
	(common-debug.o): Likewise.
	(cleanups.o): Likewise.
	(common-exceptions.o
	(posix-strerror.o): Likewise.
	(mingw-strerror.o): Likewise.
	(btrace-common.o): Likewise.
	(fileio.o): Likewise.
	(common-regcache.o): Likewise.
	(signals-state-save-restore.o): Likewise.
	(new-op.o): Likewise.
	(waitstatus.o): Likewise.
	(arm.o): Likewise.
	(arm-linux.o): Likewise.
	(arm-get-next-pcs.o): Likewise.
	(x86-dregs.o): Likewise.
	(linux-btrace.o): Likewise.
	(linux-osdata.o): Likewise.
	(linux-procfs.o): Likewise.
	(linux-ptrace.o): Likewise.
	(linux-waitpid.o): Likewise.
	(mips-linux-watch.o): Likewise.
	(ppc-linux.o): Likewise.
	(linux-personality.o): Likewise.
	(x86-linux.o): Likewise.
	(x86-linux-dregs.o): Likewise.
	(amd64-linux-siginfo.o): Likewise.
	(linux-namespaces.o): Likewise.
	(aarch64-linux-hw-point.o): Likewise.
	(aarch64-linux.o): Likewise.
	(aarch64-insn.o): Likewise.
	(tui.o): Likewise.
	(tui-command.o): Likewise.
	(tui-data.o): Likewise.
	(tui-disasm.o): Likewise.
	(tui-file.o): Likewise.
	(tui-hooks.o): Likewise.
	(tui-interp.o): Likewise.
	(tui-io.o): Likewise.
	(tui-layout.o): Likewise.
	(tui-out.o): Likewise.
	(tui-regs.o): Likewise.
	(tui-source.o): Likewise.
	(tui-stack.o): Likewise.
	(tui-win.o): Likewise.
	(tui-windata.o): Likewise.
	(tui-wingeneral.o): Likewise.
	(tui-winsource.o): Likewise.
	(guile.o): Likewise.
	(scm-arch.o): Likewise.
	(scm-auto-load.o): Likewise.
	(scm-block.o): Likewise.
	(scm-breakpoint.o): Likewise.
	(scm-cmd.o): Likewise.
	(scm-disasm.o): Likewise.
	(scm-exception.o): Likewise.
	(scm-frame.o): Likewise.
	(scm-gsmob.o): Likewise.
	(scm-iterator.o): Likewise.
	(scm-lazy-string.o): Likewise.
	(scm-math.o): Likewise.
	(scm-objfile.o): Likewise.
	(scm-param.o): Likewise.
	(scm-ports.o): Likewise.
	(scm-pretty-print.o): Likewise.
	(scm-progspace.o): Likewise.
	(scm-safe-call.o): Likewise.
	(scm-string.o): Likewise.
	(scm-symbol.o): Likewise.
	(scm-symtab.o): Likewise.
	(scm-type.o): Likewise.
	(scm-utils.o): Likewise.
	(scm-value.o): Likewise.
	(python.o): Likewise.
	(py-arch.o): Likewise.
	(py-auto-load.o): Likewise.
	(py-block.o): Likewise.
	(py-bpevent.o): Likewise.
	(py-breakpoint.o): Likewise.
	(py-cmd.o): Likewise.
	(py-continueevent.o): Likewise.
	(py-xmethods.o): Likewise.
	(py-event.o): Likewise.
	(py-evtregistry.o): Likewise.
	(py-evts.o): Likewise.
	(py-exitedevent.o): Likewise.
	(py-finishbreakpoint.o): Likewise.
	(py-frame.o): Likewise.
	(py-framefilter.o): Likewise.
	(py-function.o): Likewise.
	(py-gdb-readline.o): Likewise.
	(py-inferior.o): Likewise.
	(py-infevents.o): Likewise.
	(py-infthread.o): Likewise.
	(py-lazy-string.o): Likewise.
	(py-linetable.o): Likewise.
	(py-newobjfileevent.o): Likewise.
	(py-objfile.o): Likewise.
	(py-param.o): Likewise.
	(py-prettyprint.o): Likewise.
	(py-progspace.o): Likewise.
	(py-signalevent.o): Likewise.
	(py-stopevent.o): Likewise.
	(py-symbol.o): Likewise.
	(py-symtab.o): Likewise.
	(py-threadevent.o): Likewise.
	(py-type.o): Likewise.
	(py-unwind.o): Likewise.
	(py-utils.o): Likewise.
	(py-value.o): Likewise.
	(py-varobj.o): Likewise.
2016-11-17 12:02:32 -05:00
bfd Automatic date update in version.in 2016-11-17 00:00:19 +00:00
binutils Generate correct hint value for IDATA6. 2016-11-14 16:30:45 +00:00
config
cpu
elfcpp
etc
gas Fix SPARC relocations generated for the .eh_frame section. 2016-11-15 15:41:27 +00:00
gdb Makefile: Replace explicit subdir rules with pattern rules 2016-11-17 12:02:32 -05:00
gold Add missing '$' in configure.ac. 2016-11-07 08:00:21 -08:00
gprof
include [AArch64] Add ARMv8.3 PACGA instruction 2016-11-11 10:39:46 +00:00
intl
ld Fix PR20789 - relaxation with negative valued diff relocs 2016-11-16 16:11:46 +05:30
libdecnumber
libiberty Sync libiberty sources with gcc mainline. 2016-10-17 10:26:56 +01:00
opcodes [AArch64] Add ARMv8.3 combined pointer authentication branch instructions 2016-11-11 10:43:15 +00:00
readline
sim sim: mips: add PR info to ChangeLog 2016-11-12 01:02:23 -05:00
texinfo
zlib
.cvsignore
.gitattributes
.gitignore
ChangeLog Sync config.sub,config.guess with upstream. 2016-11-07 13:08:55 -08:00
compile
config-ml.in
config.guess Sync config.sub,config.guess with upstream. 2016-11-07 13:08:55 -08:00
config.rpath
config.sub Sync config.sub,config.guess with upstream. 2016-11-07 13:08:55 -08:00
configure
configure.ac
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
COPYING.LIBGLOSS
COPYING.NEWLIB
depcomp
djunpack.bat
install-sh
libtool.m4
lt~obsolete.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS
Makefile.def
Makefile.in
Makefile.tpl
makefile.vms
missing
mkdep
mkinstalldirs
move-if-change
README
README-maintainer-mode
setup.com
src-release.sh
symlink-tree
ylwrap

		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.