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binutils-gdb/gdbserver/Makefile.in
Andrew Burgess 1048062a3f gdbserver: pass osabi to GDB in more target descriptions 
Problem Description
-------------------

On a Windows machine I built gdbserver, configured for the target
'x86_64-w64-mingw32', then on a GNU/Linux machine I built GDB with
support for all target (--enable-targets=all).

On the Windows machine I start gdbserver with a small test binary:

  $ gdbserver 192.168.129.25:54321 C:\some\directory\executable.exe

On the GNU/Linux machine I start GDB without the test binary, and
connect to gdbserver.

As I have not given GDB the test binary, my expectation is that GDB
would connect to gdbserver and then download the file over the remote
protocol, but instead I was presented with this message:

  (gdb) target remote 192.168.129.25:54321
  Remote debugging using 192.168.129.25:54321
  warning: C:\some\directory\executable.exe: No such file or directory.
  0x00007ffa3e1e1741 in ?? ()
  (gdb)

What I found is that if I told GDB where to find the binary, like
this:

  (gdb) file target:C:/some/directory/executable.exe
  A program is being debugged already.
  Are you sure you want to change the file? (y or n) y
  Reading C:/some/directory/executable.exe from remote target...
  warning: File transfers from remote targets can be slow. Use "set sysroot" to access files locally instead.
  Reading C:/some/directory/executable.exe from remote target...
  Reading symbols from target:C:/some/directory/executable.exe...
  (gdb)

then GDB would download the executable.

The Actual Issue
----------------

I tracked the problem down to exec_file_find (solib.c).  The remote
target was passing an absolute Windows filename (beginning with "C:/"
in this case), but in exec_file_find GDB was failing the
IS_TARGET_ABSOLUTE_PATH call, and so was treating the filename as
relative.

The IS_TARGET_ABSOLUTE_PATH call was failing because GDB thought that
the file system kind was "unix", and as the filename didn't start with
a "/" it assumed the filename was not absolute.

But I'm connecting to a Windows target and 'target-file-system-kind'
was set to "auto", so GDB should be figuring out that the target
file-system is "dos-based".

Looking in effective_target_file_system_kind (filesystem.c), we find
that the logic of "auto" is delegated to the current gdbarch.  However
in windows-tdep.c we see:

  set_gdbarch_has_dos_based_file_system (gdbarch, 1);

So if we are using a Windows gdbarch we should have "dos-based"
filesystems.  What this means is that after connecting to the remote
target GDB has selected the wrong gdbarch.

What's happening is that the target description sent back by the
remote target only includes the x86-64 registers.  There's no
information about which OS we're on.  As a consequence, GDB picks the
first x86-64 gdbarch which can handle the provided register set, which
happens to be a GNU/Linux gdbarch.

And indeed, there doesn't appear to be anywhere in gdbserver that sets
the osabi on the target descriptions. Some target descriptions do have
their osabi set when the description is created, e.g. in:

  gdb/arch/amd64.c	- Sets GNU/Linux osabi when appropriate.
  gdb/arch/i386.c	- Likewise.
  gdb/arch/tic6x.c	- Always set GNU/Linux osabi.

There are also some cases in gdb/features/*.c where the tdesc is set,
but these locations are only called from GDB, not from gdbserver.

This means that many target descriptions are created without an osabi,
gdbserver does nothing to fix this, and the description is returned to
GDB without an osabi included.  This leaves GDB having to guess what
the target osabi is, and in some cases, GDB can get this wrong.

Proposed Solution
-----------------

I propose to change init_target_desc so that it requires an gdb_osabi
to be passed in, this will then be used to set the target_desc osabi
field.

I believe that within gdbserver init_target_desc is called for every
target_desc, so this should mean that every target_desc has an
opportunity to set the osabi to something sane.

I did consider passing the osabi into the code which creates the
target_desc objects, but that would require updating far more code, as
each target has its own code for creating target descriptions.
The approach taken here requires minimal changes and forces every
user of init_target_desc to think about what the correct osabi is.

In some cases, e.g. amd64, where the osabi is already set when the
target_desc is created, the init_target_desc call will override the
current value, however, we should always be replacing it with the same
actual value.  i.e. if the target_desc is created with the osabi set
to GNU/Linux, then this should only happen when gdbserver is built for
GNU/Linux, in which case the init_target_desc should also be setting
the osabi to GNU/Linux.

The Tricky Bits
---------------

Some targets, like amd64, use a features based approach for creating
target_desc objects, there's a function in arch/amd64.c which creates
a target_desc, adds features too it, and returns the new target_desc.
This target_desc is then passed to an init_target_desc call within
gdbserver.  This is the easy case to handle.

Then there are other targets which instead have a fixed set of xml
files, each of which is converted into a .dat file, which is then used
to generate a .cc file, which is compiled into gdbserver.  The
generated .cc file creates the target_desc object and calls
init_target_desc on it.  In this case though the target description
that is sent to GDB isn't generated from the target_desc object, but
is instead the contents of the fixed xml file.  For this case the
osabi which we pass to init_target_desc should match the osabi that
exists in the fixed xml file.

Luckily, in the previous commit I copied the osabi information from
the fixed xml files into the .dat files.  So in this commit I have
extended regdat.sh to read the osabi from the .dat file and use it in
the generated init_target_desc call.

The problem with some of these .dat base targets is that their fixed
xml files don't currently contain any osabi information, and the file
names don't indicate that they are Linux only (despite them currently
only being used from gdbserver for Linux targets), so I don't
currently feel confident adding any osabi information to these files.
An example would be features/rs6000/powerpc-64.xml.  For now I've just
ignored these cases.  The init_target_desc will use GDB_OSABI_UNKNOWN
which is the default.  This means that for these targets nothing
changes from the current behaviour.  But many other targets do now
pass the osabi back.  Targets that do pass the osabi back are
improved with this commit.

Conclusion
----------

Now when I connect to the Windows remote the target description
returned includes the osabi name.  With this extra information GDB
selects the correct gdbarch object, which means that GDB understands
the target has a "dos-based" file-system.  With that correct GDB
understands that the filename it was given is absolute, and so fetches
the file from the remote as we'd like.

Reviewed-By: Kevin Buettner <kevinb@redhat.com>
2024-11-12 12:51:36 +00:00

652 lines
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# Copyright (C) 1989-2024 Free Software Foundation, Inc.
# This file is part of GDB.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Please keep lists in this file sorted alphabetically, with one item per line.
# See gdb/Makefile.in for guidelines on ordering files and directories.
prefix = @prefix@
exec_prefix = @exec_prefix@
host_alias = @host_noncanonical@
target_alias = @target_noncanonical@
program_transform_name = @program_transform_name@
bindir = @bindir@
libdir = @libdir@
CONFIG_SRC_SUBDIR = @CONFIG_SRC_SUBDIR@
install_sh = @install_sh@
SHELL = @SHELL@
EXEEXT = @EXEEXT@
INSTALL = @INSTALL@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
INSTALL_DATA = @INSTALL_DATA@
RANLIB = @RANLIB@
CC = @CC@
CXX = @CXX@
CXX_DIALECT = @CXX_DIALECT@
AR = @AR@
AR_FLAGS = rc
STRIP = @STRIP@
# Dependency tracking information.
DEPMODE = @CCDEPMODE@
DEPDIR = @DEPDIR@
depcomp = $(SHELL) $(srcdir)/../depcomp
# Directory containing source files. Don't clean up the spacing,
# this exact string is matched for by the "configure" script.
srcdir = @srcdir@
abs_top_srcdir = @abs_top_srcdir@
abs_srcdir = @abs_srcdir@
VPATH = @srcdir@
top_builddir = .
include $(srcdir)/../gdb/silent-rules.mk
# Note that these are overridden by GNU make-specific code below if
# GNU make is used. The overrides implement dependency tracking.
COMPILE.pre = $(CXX) $(CXX_DIALECT)
COMPILE.post = -c -o $@
POSTCOMPILE = @true
INCLUDE_SERVER_H = -include $(srcdir)/server.h
# CXXFLAGS is at the very end on purpose, so that user-supplied flags can
# override internal flags.
COMPILE = $(ECHO_CXX) $(COMPILE.pre) $(INTERNAL_CFLAGS) $(INCLUDE_SERVER_H) \
$(CXXFLAGS) $(COMPILE.post)
# It is also possible that you will need to add -I/usr/include/sys to the
# CFLAGS section if your system doesn't have fcntl.h in /usr/include (which
# is where it should be according to Posix).
# Set this up with gcc if you have gnu ld and the loader will print out
# line numbers for undefinded refs.
#CC_LD = g++ -static
CC_LD = $(CXX) $(CXX_DIALECT)
# Where is the "include" directory? Traditionally ../include or ./include
INCLUDE_DIR = ${srcdir}/../include
INCLUDE_DEP = $$(INCLUDE_DIR)
LIBIBERTY_BUILDDIR = ../libiberty
LIBIBERTY_NORMAL = $(LIBIBERTY_BUILDDIR)/libiberty.a
LIBIBERTY_NOASAN = $(LIBIBERTY_BUILDDIR)/noasan/libiberty.a
LIBIBERTY_PIC = $(LIBIBERTY_BUILDDIR)/pic/libiberty.a
LIBIBERTY_FOR_SHLIB = \
$(if $(wildcard $(LIBIBERTY_NOASAN)),\
$(LIBIBERTY_NOASAN),\
$(if $(wildcard $(LIBIBERTY_PIC)),\
$(LIBIBERTY_PIC),\
$(LIBIBERTY_NORMAL)))
LIBIBERTY = $(LIBIBERTY_NORMAL)
GDBSUPPORT_BUILDDIR = ../gdbsupport
GDBSUPPORT = $(GDBSUPPORT_BUILDDIR)/libgdbsupport.a
# Where is ust? These will be empty if ust was not available.
ustlibs = @ustlibs@
ustinc = @ustinc@
# gnulib
GNULIB_PARENT_DIR = ..
include $(GNULIB_PARENT_DIR)/gnulib/Makefile.gnulib.inc
# Where is the INTL library? Typically in ../intl.
INTL = @LIBINTL@
INTL_DEPS = @LIBINTL_DEP@
INTL_CFLAGS = @INCINTL@
INCSUPPORT = \
-I$(srcdir)/.. \
-I..
# All the includes used for CFLAGS and for lint.
# -I. for config files.
# -I${srcdir} for our headers.
# -I$(srcdir)/../gdb/regformats for regdef.h.
#
# We do not include ../target or ../nat in here because headers
# in those directories should be included with the subdirectory.
# e.g.: "target/wait.h".
#
INCLUDE_CFLAGS = \
-I. \
-I${srcdir} \
-I$(srcdir)/../gdb/regformats \
-I$(srcdir)/.. \
-I$(INCLUDE_DIR) \
-I$(srcdir)/../gdb \
$(INCGNU) \
$(INCSUPPORT) \
$(INTL_CFLAGS)
# M{H,T}_CFLAGS, if defined, has host- and target-dependent CFLAGS
# from the config/ directory.
GLOBAL_CFLAGS = ${MT_CFLAGS} ${MH_CFLAGS}
#PROFILE_CFLAGS = -pg
WARN_CFLAGS = @WARN_CFLAGS@
WERROR_CFLAGS = @WERROR_CFLAGS@
WARN_CFLAGS_NO_FORMAT = `echo " $(WARN_CFLAGS) " \
| sed "s/ -Wformat-nonliteral / -Wno-format-nonliteral /g"`
# These are specifically reserved for setting from the command line
# when running make. I.E. "make CFLAGS=-Wmissing-prototypes".
CFLAGS = @CFLAGS@
CXXFLAGS = @CXXFLAGS@
CPPFLAGS = @CPPFLAGS@
PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
PTHREAD_LIBS = @PTHREAD_LIBS@
WIN32APILIBS = @WIN32APILIBS@
MAYBE_LIBICONV = @MAYBE_LIBICONV@
# INTERNAL_CFLAGS is the aggregate of all other *CFLAGS macros.
INTERNAL_CFLAGS = \
${GLOBAL_CFLAGS} \
${PROFILE_CFLAGS} \
${INCLUDE_CFLAGS} \
${CPPFLAGS} \
$(PTHREAD_CFLAGS) \
$(WARN_CFLAGS) \
$(WERROR_CFLAGS) \
-DGDBSERVER
# LDFLAGS is specifically reserved for setting from the command line
# when running make.
LDFLAGS = @LDFLAGS@
INTERNAL_LDFLAGS = $(LDFLAGS) @RDYNAMIC@
# All source files that go into linking GDB remote server.
SFILES = \
$(srcdir)/debug.cc \
$(srcdir)/dll.cc \
$(srcdir)/gdbreplay.cc \
$(srcdir)/hostio.cc \
$(srcdir)/i387-fp.cc \
$(srcdir)/inferiors.cc \
$(srcdir)/linux-aarch64-low.cc \
$(srcdir)/linux-arc-low.cc \
$(srcdir)/linux-arm-low.cc \
$(srcdir)/linux-csky-low.cc \
$(srcdir)/linux-ia64-low.cc \
$(srcdir)/linux-loongarch-low.cc \
$(srcdir)/linux-low.cc \
$(srcdir)/linux-m68k-low.cc \
$(srcdir)/linux-mips-low.cc \
$(srcdir)/linux-nios2-low.cc \
$(srcdir)/linux-or1k-low.cc \
$(srcdir)/linux-ppc-low.cc \
$(srcdir)/linux-riscv-low.cc \
$(srcdir)/linux-s390-low.cc \
$(srcdir)/linux-sh-low.cc \
$(srcdir)/linux-sparc-low.cc \
$(srcdir)/linux-x86-low.cc \
$(srcdir)/linux-xtensa-low.cc \
$(srcdir)/mem-break.cc \
$(srcdir)/netbsd-aarch64-low.cc \
$(srcdir)/netbsd-amd64-low.cc \
$(srcdir)/netbsd-i386-low.cc \
$(srcdir)/netbsd-low.cc \
$(srcdir)/netbsd-low.h \
$(srcdir)/proc-service.cc \
$(srcdir)/proc-service.list \
$(srcdir)/regcache.cc \
$(srcdir)/remote-utils.cc \
$(srcdir)/server.cc \
$(srcdir)/symbol.cc \
$(srcdir)/target.cc \
$(srcdir)/thread-db.cc \
$(srcdir)/utils.cc \
$(srcdir)/win32-i386-low.cc \
$(srcdir)/win32-low.cc \
$(srcdir)/x86-low.cc \
$(srcdir)/../gdb/alloc.c \
$(srcdir)/../gdb/arch/arc.c \
$(srcdir)/../gdb/arch/arm.c \
$(srcdir)/../gdb/arch/arm-get-next-pcs.c \
$(srcdir)/../gdb/arch/arm-linux.c \
$(srcdir)/../gdb/arch/csky.c \
$(srcdir)/../gdb/arch/loongarch.c \
$(srcdir)/../gdb/arch/ppc-linux-common.c \
$(srcdir)/../gdb/arch/riscv.c \
$(srcdir)/../gdb/nat/aarch64-mte-linux-ptrace.c \
$(srcdir)/../gdb/nat/aarch64-scalable-linux-ptrace.c \
$(srcdir)/../gdb/nat/linux-btrace.c \
$(srcdir)/../gdb/nat/linux-namespaces.c \
$(srcdir)/../gdb/nat/linux-osdata.c \
$(srcdir)/../gdb/nat/linux-personality.c \
$(srcdir)/../gdb/nat/mips-linux-watch.c \
$(srcdir)/../gdb/nat/ppc-linux.c \
$(srcdir)/../gdb/nat/riscv-linux-tdesc.c \
$(srcdir)/../gdb/nat/fork-inferior.c \
$(srcdir)/../gdb/target/target.c \
$(srcdir)/../gdb/target/waitstatus.c
DEPFILES = @GDBSERVER_DEPFILES@
LIBOBJS = @LIBOBJS@
SOURCES = $(SFILES)
TAGFILES = $(SOURCES)
OBS = \
alloc.o \
ax.o \
debug.o \
dll.o \
hostio.o \
inferiors.o \
mem-break.o \
notif.o \
regcache.o \
remote-utils.o \
server.o \
symbol.o \
target.o \
tdesc.o \
tracepoint.o \
utils.o \
version.o \
target/target.o \
target/waitstatus.o \
$(DEPFILES) \
$(LIBOBJS) \
$(XML_BUILTIN)
GDBREPLAY_OBS = \
gdbreplay.o \
utils.o \
version.o
GDBSERVER_LIBS = @GDBSERVER_LIBS@ $(PTHREAD_LIBS)
XM_CLIBS = @LIBS@
CDEPS = $(srcdir)/proc-service.list
# XML files to compile in to gdbserver, if any.
XML_DIR = $(srcdir)/../gdb/features
XML_FILES = @srv_xmlfiles@
XML_BUILTIN = @srv_xmlbuiltin@
IPA_DEPFILES = @IPA_DEPFILES@
extra_libraries = @extra_libraries@
FLAGS_TO_PASS = \
"prefix=$(prefix)" \
"exec_prefix=$(exec_prefix)" \
"libdir=$(libdir)" \
"DESTDIR=$(DESTDIR)" \
"AR=$(AR)" \
"AR_FLAGS=$(AR_FLAGS)" \
"CC=$(CC)" \
"CFLAGS=$(CFLAGS)" \
"CXX=$(CXX)" \
"CXXFLAGS=$(CXXFLAGS)" \
"DLLTOOL=$(DLLTOOL)" \
"LDFLAGS=$(LDFLAGS)" \
"RANLIB=$(RANLIB)" \
"MAKEINFO=$(MAKEINFO)" \
"MAKEHTML=$(MAKEHTML)" \
"MAKEHTMLFLAGS=$(MAKEHTMLFLAGS)" \
"INSTALL=$(INSTALL)" \
"INSTALL_PROGRAM=$(INSTALL_PROGRAM)" \
"INSTALL_DATA=$(INSTALL_DATA)" \
"RUNTEST=$(RUNTEST)" \
"RUNTESTFLAGS=$(RUNTESTFLAGS)"
# All generated files which can be included by another file.
generated_files = config.h
all: gdbserver$(EXEEXT) gdbreplay$(EXEEXT) $(extra_libraries)
# Traditionally "install" depends on "all". But it may be useful
# not to; for example, if the user has made some trivial change to a
# source file and doesn't care about rebuilding or just wants to save the
# time it takes for make to check that all is up to date.
# install-only is intended to address that need.
install: all
@$(MAKE) $(FLAGS_TO_PASS) install-only
install-only:
n=`echo gdbserver | sed '$(program_transform_name)'`; \
if [ x$$n = x ]; then n=gdbserver; else true; fi; \
if [ x"$(IPA_DEPFILES)" != x ]; then \
$(SHELL) $(srcdir)/../mkinstalldirs $(DESTDIR)$(libdir); \
$(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) $(IPA_LIB) $(DESTDIR)$(libdir)/$(IPA_LIB); \
fi; \
$(SHELL) $(srcdir)/../mkinstalldirs $(DESTDIR)$(bindir); \
$(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) gdbserver$(EXEEXT) $(DESTDIR)$(bindir)/$$n$(EXEEXT)
install-strip:
$(MAKE) $(FLAGS_TO_PASS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
`test -z '$(STRIP)' || \
echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install-only
uninstall: force
n=`echo gdbserver | sed '$(program_transform_name)'`; \
if [ x$$n = x ]; then n=gdbserver; else true; fi; \
if [ x"$(IPA_DEPFILES)" != x ]; then \
rm -f $(DESTDIR)$(libdir)/$(IPA_LIB); \
fi; \
rm -f $(DESTDIR)/$(bindir)/$$n$(EXEEXT)
installcheck:
check:
info dvi pdf:
install-info:
install-dvi:
install-pdf:
html:
install-html:
clean-info:
gdbserver$(EXEEXT): $(sort $(OBS)) ${CDEPS} $(LIBGNU) $(LIBIBERTY) \
$(INTL_DEPS) $(GDBSUPPORT)
$(SILENCE) rm -f gdbserver$(EXEEXT)
$(ECHO_CXXLD) $(CC_LD) $(INTERNAL_CFLAGS) $(INTERNAL_LDFLAGS) \
$(CXXFLAGS) \
-o gdbserver$(EXEEXT) $(OBS) $(GDBSUPPORT) $(LIBGNU) \
$(LIBGNU_EXTRA_LIBS) $(LIBIBERTY) $(INTL) \
$(GDBSERVER_LIBS) $(XM_CLIBS) $(WIN32APILIBS) $(MAYBE_LIBICONV)
gdbreplay$(EXEEXT): $(sort $(GDBREPLAY_OBS)) $(LIBGNU) $(LIBIBERTY) \
$(INTL_DEPS) $(GDBSUPPORT)
$(SILENCE) rm -f gdbreplay$(EXEEXT)
$(ECHO_CXXLD) $(CC_LD) $(INTERNAL_CFLAGS) $(INTERNAL_LDFLAGS) \
$(CXXFLAGS) \
-o gdbreplay$(EXEEXT) $(GDBREPLAY_OBS) $(XM_CLIBS) \
$(GDBSUPPORT) $(LIBGNU) $(LIBGNU_EXTRA_LIBS) \
$(LIBIBERTY) $(INTL) $(WIN32APILIBS)
IPA_OBJS = \
alloc-ipa.o \
ax-ipa.o \
gdbsupport/common-utils-ipa.o \
gdbsupport/errors-ipa.o \
gdbsupport/format-ipa.o \
gdbsupport/print-utils-ipa.o \
gdbsupport/rsp-low-ipa.o \
gdbsupport/safe-strerror-ipa.o \
gdbsupport/tdesc-ipa.o \
regcache-ipa.o \
remote-utils-ipa.o \
tdesc-ipa.o \
tracepoint-ipa.o \
utils-ipa.o \
${IPA_DEPFILES}
IPA_LIB = libinproctrace.so
$(IPA_LIB): $(sort $(IPA_OBJS)) ${CDEPS}
$(SILENCE) rm -f $(IPA_LIB)
$(ECHO_CXXLD) $(CC_LD) -shared -fPIC -Wl,--soname=$(IPA_LIB) \
-Wl,--no-undefined $(INTERNAL_CFLAGS) $(INTERNAL_LDFLAGS) \
$(CXXFLAGS) \
-o $(IPA_LIB) ${IPA_OBJS} $(LIBIBERTY_FOR_SHLIB) -ldl -pthread
# Put the proper machine-specific files first, so M-. on a machine
# specific routine gets the one for the correct machine.
# The xyzzy stuff below deals with empty DEPFILES
TAGS: ${TAGFILES}
etags \
`for i in yzzy ${DEPFILES}; do \
if [ x$$i != xyzzy ]; then \
echo ${srcdir}/$$i | \
sed -e 's,/\(\(arch\|nat\|target\)/.*\)\.o$$,/../gdb/\1.c,' \
-e 's/\.o$$/\.cc/'; \
fi; \
done` \
${TAGFILES}
tags: TAGS
mostlyclean clean:
rm -f *.o ${ADD_FILES} *~
rm -f gdbserver$(EXEEXT) gdbreplay$(EXEEXT) core make.log
rm -f $(IPA_LIB)
rm -f *-generated.cc
rm -f stamp-xml
rm -f $(DEPDIR)/*.Po
for i in $(CONFIG_SRC_SUBDIR); do \
rm -f $$i/*.o; \
rm -f $$i/$(DEPDIR)/*; \
done
maintainer-clean realclean distclean: clean
rm -f Makefile config.status config.h stamp-h config.log config.cache
for i in $(CONFIG_SRC_SUBDIR); do \
rmdir $$i/$(DEPDIR); \
done
config.h: stamp-h ; @true
stamp-h: config.in config.status
$(SHELL) ./config.status config.h
Makefile: Makefile.in config.status
$(SHELL) ./config.status $@
config.status: configure configure.srv $(srcdir)/../bfd/development.sh
$(SHELL) ./config.status --recheck
# automatic rebuilding in automake-generated Makefiles requires
# this rule in the toplevel Makefile, which, with GNU make, causes
# the desired updates through the implicit regeneration of the Makefile
# and all of its prerequisites.
am--refresh:
@:
force:
version-generated.cc: Makefile $(srcdir)/../gdb/version.in $(srcdir)/../bfd/version.h $(srcdir)/../gdbsupport/create-version.sh
$(ECHO_GEN) $(SHELL) $(srcdir)/../gdbsupport/create-version.sh $(srcdir)/../gdb \
$(host_alias) $(target_alias) $@
xml-builtin-generated.cc: stamp-xml; @true
stamp-xml: $(XML_DIR)/feature_to_c.sh Makefile $(XML_FILES)
$(SILENCE) rm -f xml-builtin.tmp
$(ECHO_GEN_XML_BUILTIN_GENERATED) $(SHELL) $(XML_DIR)/feature_to_c.sh \
xml-builtin.tmp $(XML_FILES)
$(SILENCE) $(SHELL) $(srcdir)/../move-if-change xml-builtin.tmp xml-builtin-generated.cc
$(SILENCE) echo stamp > stamp-xml
.PRECIOUS: xml-builtin.cc
# GNU Make has an annoying habit of putting *all* the Makefile variables
# into the environment, unless you include this target as a circumvention.
# Rumor is that this will be fixed (and this target can be removed)
# in GNU Make 4.0.
.NOEXPORT:
# GNU Make 3.63 has a different problem: it keeps tacking command line
# overrides onto the definition of $(MAKE). This variable setting
# will remove them.
MAKEOVERRIDES =
regdat_sh = $(srcdir)/../gdb/regformats/regdat.sh
osabi_def = $(srcdir)/../gdbsupport/osabi.def
UST_CFLAGS = \
$(ustinc) \
-DCONFIG_UST_GDB_INTEGRATION
# Undo gnulib replacements for the IPA shared library build.
# The gnulib headers are still needed, but gnulib is not linked
# into the IPA lib so replacement apis don't work.
UNDO_GNULIB_CFLAGS = \
-Drpl_strerror_r=strerror_r \
-Drpl_free=free \
-Drpl_malloc=malloc \
-Drpl_realloc=realloc
# Note, we only build the IPA if -fvisibility=hidden is supported in
# the first place.
IPAGENT_CFLAGS = \
$(INTERNAL_CFLAGS) \
$(UST_CFLAGS) \
$(UNDO_GNULIB_CFLAGS) \
-fPIC -DIN_PROCESS_AGENT \
-fvisibility=hidden
# CXXFLAGS is at the very end on purpose, so that user-supplied flags can
# override internal flags.
IPAGENT_COMPILE = $(ECHO_CXX) $(COMPILE.pre) $(IPAGENT_CFLAGS) \
$(INCLUDE_SERVER_H) $(CXXFLAGS) $(COMPILE.post)
# Rules for special cases.
ax-ipa.o: ax.cc
$(IPAGENT_COMPILE) $(WARN_CFLAGS_NO_FORMAT) $<
$(POSTCOMPILE)
ax.o: ax.cc
$(COMPILE) $(WARN_CFLAGS_NO_FORMAT) $<
$(POSTCOMPILE)
# Rules for objects that go in the in-process agent.
arch/%-ipa.o: ../gdb/arch/%.c
$(IPAGENT_COMPILE) -x c++ $<
$(POSTCOMPILE)
gdbsupport/%-ipa.o: ../gdbsupport/%.cc
$(IPAGENT_COMPILE) $<
$(POSTCOMPILE)
%-ipa.o: %-generated.cc
$(IPAGENT_COMPILE) $<
$(POSTCOMPILE)
%-ipa.o: %.cc
$(IPAGENT_COMPILE) $<
$(POSTCOMPILE)
%-ipa.o: ../gdb/%.c
$(IPAGENT_COMPILE) -x c++ $<
$(POSTCOMPILE)
# Note: Between two matching pattern rules, GNU Make 3.81 chooses the first one.
# Therefore, this one needs to be before "%.o: %.cc" for it to be considered for
# files such as linux-amd64-ipa.o generated from linux-amd64-ipa.cc.
#
# Later versions of GNU Make choose the rule with the shortest stem, so it would
# work in any order.
%-ipa.o: %-ipa.cc
$(IPAGENT_COMPILE) $<
$(POSTCOMPILE)
# Rules for objects that go in the gdbserver binary.
arch/%.o: ../gdb/arch/%.c
$(COMPILE) -x c++ $<
$(POSTCOMPILE)
%.o: %-generated.cc
$(COMPILE) $<
$(POSTCOMPILE)
%.o: %.cc
$(COMPILE) $<
$(POSTCOMPILE)
nat/%.o: ../gdb/nat/%.c
$(COMPILE) -x c++ $<
$(POSTCOMPILE)
target/%.o: ../gdb/target/%.c
$(COMPILE) -x c++ $<
$(POSTCOMPILE)
%.o: ../gdb/%.c
$(COMPILE) -x c++ $<
$(POSTCOMPILE)
# Rules for register format descriptions. Suffix destination files with
# -generated to identify and clean them easily.
%-generated.cc: ../gdb/regformats/%.dat $(osabi_def) $(regdat_sh)
$(ECHO_REGDAT) $(SHELL) $(regdat_sh) $< $(osabi_def) $@
%-generated.cc: ../gdb/regformats/rs6000/%.dat $(osabi_def) $(regdat_sh)
$(ECHO_REGDAT) $(SHELL) $(regdat_sh) $< $(osabi_def) $@
# Rule for gdbreplay.o. This is the same as COMPILE, but includes common-defs.h
# instead of server.h.
gdbreplay.o: gdbreplay.cc
$(ECHO_CXX) $(COMPILE.pre) $(INTERNAL_CFLAGS) $(CXXFLAGS) \
-include gdbsupport/common-defs.h $(COMPILE.post) $<
#
# Dependency tracking.
#
ifeq ($(DEPMODE),depmode=gcc3)
# Note that we put the dependencies into a .Tpo file, then move them
# into place if the compile succeeds. We need this because gcc does
# not atomically write the dependency output file.
override COMPILE.post = -c -o $@ -MT $@ -MMD -MP \
-MF $(@D)/$(DEPDIR)/$(basename $(@F)).Tpo
override POSTCOMPILE = @mv $(@D)/$(DEPDIR)/$(basename $(@F)).Tpo \
$(@D)/$(DEPDIR)/$(basename $(@F)).Po
else
override COMPILE.pre = source='$<' object='$@' libtool=no \
DEPDIR=$(DEPDIR) $(DEPMODE) $(depcomp) \
$(CXX) $(CXX_DIALECT)
# depcomp handles atomicity for us, so we don't need a postcompile
# step.
override POSTCOMPILE =
endif
# A list of all the objects we might care about in this build, for
# dependency tracking.
all_object_files = $(OBS) $(GDBREPLAY_OBS) $(IPA_OBJS)
# Ensure that generated files are created early. Use order-only
# dependencies if available. They require GNU make 3.80 or newer,
# and the .VARIABLES variable was introduced at the same time.
ifdef .VARIABLES
$(all_object_files): | $(generated_files)
else
$(all_object_files) : $(generated_files)
endif
# All the .deps files to include.
all_deps_files = $(foreach dep,$(patsubst %.o,%.Po,$(all_object_files)),\
$(dir $(dep))/$(DEPDIR)/$(notdir $(dep)))
# Dependencies.
-include $(all_deps_files)
# Disable implicit make rules.
include $(srcdir)/../gdb/disable-implicit-rules.mk
# Do not delete intermediate files (e.g. *-generated.cc).
.SECONDARY:
# This is the end of "Makefile.in".
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