81ef52b630
The GDB version used on ARC is based on a recent gdb code base, post
gdb 9.2. This recent gdb code base, which pre-figures what will be in
gdb 10, has a significant change: gdbserver is not longer in
gdb/gdbserver, but at the top-level, and the mechanism to build
gdbserver only has changed. Due to this change, a build of ARC GDB for
gdbserver only fails with:
/bin/bash: line 0: cd: /opt/output/build/gdb-arc-2020.03-release-gdb/gdb/gdbserver: No such file or directory
This commit adjusts gdb.mk to support four cases:
- "old" gdb, gdbserver only
- "old" gdb, with the gdb debugger (and optionally gdbserver as well)
- "new" gdb, gdbserver only
- "new" gdb, with the gdb debugger (and optionally gdbserver as well)
A boolean GDB_GDBSERVER_TOPLEVEL is introduced to differentiate
between the old and new gdb, it is set to "y" for gdb versions that
have the gdbserver code at the top-level. For now, only the ARC
version sets it, but in the future, upstream gdb version 10 will also
have to set it.
Here is the behavior, for each case:
(1) "old" gdb, gdbserver only
We set GDB_SUBDIR to gdb/gdbserver, so only the configure script
in this folder gets called.
--enable-gdbserver --disable-gdb are passed in CONF_OPTS.
(2) "old" gdb, with the gdb debugger (and optionally gdbserver as well)
We set GDB_SUBDIR to build/, an empty directory which allows to
do an out of tree build, which is mandatory for a full gdb build
since gdb 9.x.
--enable-gdb is passed in CONF_OPTS as well as --enable-gdbserver
or --disable-gdbserver depending on whether gdbserver is enabled
as well.
(3) "new" gdb, gdbserver only
We set GDB_SUBDIR to build/, an empty directory which allows to
do an out of tree build, which is mandatory for a full gdb build
since gdb 9.x.
--enable-gdbserver --disable-gdb are passed in CONF_OPTS.
(4) "new" gdb, with the gdb debugger (and optionally gdbserver as well)
We set GDB_SUBDIR to build/, an empty directory which allows to
do an out of tree build, which is mandatory for a full gdb build
since gdb 9.x.
--enable-gdb is passed in CONF_OPTS as well as --enable-gdbserver
or --disable-gdbserver depending on whether gdbserver is enabled
as well.
In addition to these changes, some related changes are done as well:
- We re-enable building both gdb and gdbserver on ARC, as it works
again.
- We only pass --with-curses when curses is really provided, i.e when
the full debugger is being built.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Tested-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
305 lines
9.4 KiB
Makefile
305 lines
9.4 KiB
Makefile
################################################################################
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#
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# gdb
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#
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################################################################################
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GDB_VERSION = $(call qstrip,$(BR2_GDB_VERSION))
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GDB_SITE = $(BR2_GNU_MIRROR)/gdb
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GDB_SOURCE = gdb-$(GDB_VERSION).tar.xz
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ifeq ($(BR2_arc),y)
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GDB_SITE = $(call github,foss-for-synopsys-dwc-arc-processors,binutils-gdb,$(GDB_VERSION))
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GDB_SOURCE = gdb-$(GDB_VERSION).tar.gz
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GDB_FROM_GIT = y
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# recent gdb versions (>= 10) have gdbserver moved at the top-level,
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# which requires a different build logic.
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GDB_GDBSERVER_TOPLEVEL = y
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endif
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ifeq ($(BR2_csky),y)
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GDB_SITE = $(call github,c-sky,binutils-gdb,$(GDB_VERSION))
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GDB_SOURCE = gdb-$(GDB_VERSION).tar.gz
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GDB_FROM_GIT = y
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endif
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GDB_LICENSE = GPL-2.0+, LGPL-2.0+, GPL-3.0+, LGPL-3.0+
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GDB_LICENSE_FILES = COPYING COPYING.LIB COPYING3 COPYING3.LIB
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# On gdb < 10, if you want to build only gdbserver, you need to
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# configure only gdb/gdbserver.
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ifeq ($(BR2_PACKAGE_GDB_DEBUGGER)$(GDB_GDBSERVER_TOPLEVEL),)
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GDB_SUBDIR = gdb/gdbserver
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# When we want to build the full gdb, or for very recent versions of
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# gdb with gdbserver at the top-level, out of tree build is mandatory,
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# so we create a 'build' subdirectory in the gdb sources, and build
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# from there.
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else
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GDB_SUBDIR = build
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define GDB_CONFIGURE_SYMLINK
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mkdir -p $(@D)/$(GDB_SUBDIR)
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ln -sf ../configure $(@D)/$(GDB_SUBDIR)/configure
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endef
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GDB_PRE_CONFIGURE_HOOKS += GDB_CONFIGURE_SYMLINK
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endif
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# For the host variant, we really want to build with XML support,
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# which is needed to read XML descriptions of target architectures. We
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# also need ncurses.
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# As for libiberty, gdb may use a system-installed one if present, so
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# we must ensure ours is installed first.
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HOST_GDB_DEPENDENCIES = host-expat host-libiberty host-ncurses
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# Disable building documentation
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GDB_MAKE_OPTS += MAKEINFO=true
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GDB_INSTALL_TARGET_OPTS += MAKEINFO=true DESTDIR=$(TARGET_DIR) install
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HOST_GDB_MAKE_OPTS += MAKEINFO=true
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HOST_GDB_INSTALL_OPTS += MAKEINFO=true install
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# Apply the Xtensa specific patches
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ifneq ($(ARCH_XTENSA_OVERLAY_FILE),)
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define GDB_XTENSA_OVERLAY_EXTRACT
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$(call arch-xtensa-overlay-extract,$(@D),gdb)
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endef
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GDB_POST_EXTRACT_HOOKS += GDB_XTENSA_OVERLAY_EXTRACT
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GDB_EXTRA_DOWNLOADS += $(ARCH_XTENSA_OVERLAY_URL)
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HOST_GDB_POST_EXTRACT_HOOKS += GDB_XTENSA_OVERLAY_EXTRACT
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HOST_GDB_EXTRA_DOWNLOADS += $(ARCH_XTENSA_OVERLAY_URL)
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endif
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ifeq ($(GDB_FROM_GIT),y)
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GDB_DEPENDENCIES += host-flex host-bison
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HOST_GDB_DEPENDENCIES += host-flex host-bison
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endif
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# When gdb sources are fetched from the binutils-gdb repository, they
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# also contain the binutils sources, but binutils shouldn't be built,
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# so we disable it (additionally the option --disable-install-libbfd
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# prevents the un-wanted installation of libobcodes.so and libbfd.so).
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GDB_DISABLE_BINUTILS_CONF_OPTS = \
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--disable-binutils \
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--disable-install-libbfd \
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--disable-ld \
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--disable-gas
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GDB_CONF_ENV = \
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ac_cv_type_uintptr_t=yes \
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gt_cv_func_gettext_libintl=yes \
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ac_cv_func_dcgettext=yes \
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gdb_cv_func_sigsetjmp=yes \
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bash_cv_func_strcoll_broken=no \
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bash_cv_must_reinstall_sighandlers=no \
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bash_cv_func_sigsetjmp=present \
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bash_cv_have_mbstate_t=yes \
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gdb_cv_func_sigsetjmp=yes
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# Starting with gdb 7.11, the bundled gnulib tries to use
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# rpl_gettimeofday (gettimeofday replacement) due to the code being
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# unable to determine if the replacement function should be used or
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# not when cross-compiling with uClibc or musl as C libraries. So use
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# gl_cv_func_gettimeofday_clobber=no to not use rpl_gettimeofday,
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# assuming musl and uClibc have a properly working gettimeofday
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# implementation. It needs to be passed to GDB_CONF_ENV to build
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# gdbserver only but also to GDB_MAKE_ENV, because otherwise it does
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# not get passed to the configure script of nested packages while
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# building gdbserver with full debugger.
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GDB_CONF_ENV += gl_cv_func_gettimeofday_clobber=no
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GDB_MAKE_ENV += gl_cv_func_gettimeofday_clobber=no
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# Similarly, starting with gdb 8.1, the bundled gnulib tries to use
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# rpl_strerror. Let's tell gnulib the C library implementation works
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# well enough.
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GDB_CONF_ENV += \
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gl_cv_func_working_strerror=yes \
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gl_cv_func_strerror_0_works=yes
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GDB_MAKE_ENV += \
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gl_cv_func_working_strerror=yes \
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gl_cv_func_strerror_0_works=yes
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# Starting with glibc 2.25, the proc_service.h header has been copied
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# from gdb to glibc so other tools can use it. However, that makes it
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# necessary to make sure that declaration of prfpregset_t declaration
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# is consistent between gdb and glibc. In gdb, however, there is a
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# workaround for a broken prfpregset_t declaration in glibc 2.3 which
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# uses AC_TRY_RUN to detect if it's needed, which doesn't work in
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# cross-compilation. So pass the cache option to configure.
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# It needs to be passed to GDB_CONF_ENV to build gdbserver only but
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# also to GDB_MAKE_ENV, because otherwise it does not get passed to the
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# configure script of nested packages while building gdbserver with full
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# debugger.
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GDB_CONF_ENV += gdb_cv_prfpregset_t_broken=no
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GDB_MAKE_ENV += gdb_cv_prfpregset_t_broken=no
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# The shared only build is not supported by gdb, so enable static build for
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# build-in libraries with --enable-static.
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GDB_CONF_OPTS = \
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--without-uiout \
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--disable-gdbtk \
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--without-x \
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--disable-sim \
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$(GDB_DISABLE_BINUTILS_CONF_OPTS) \
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--without-included-gettext \
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--disable-werror \
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--enable-static \
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--without-mpfr
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ifeq ($(BR2_PACKAGE_GDB_DEBUGGER),y)
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GDB_CONF_OPTS += \
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--enable-gdb \
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--with-curses
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GDB_DEPENDENCIES = ncurses \
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$(if $(BR2_PACKAGE_LIBICONV),libiconv)
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else
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GDB_CONF_OPTS += \
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--disable-gdb \
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--without-curses
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endif
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ifeq ($(BR2_PACKAGE_GDB_SERVER),y)
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GDB_CONF_OPTS += --enable-gdbserver
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else
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GDB_CONF_OPTS += --disable-gdbserver
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endif
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# When gdb is built as C++ application for ARC it segfaults at runtime
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# So we pass --disable-build-with-cxx config option to force gdb not to
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# be built as C++ app.
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ifeq ($(BR2_arc),y)
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GDB_CONF_OPTS += --disable-build-with-cxx
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endif
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# gdb 7.12+ by default builds with a C++ compiler, which doesn't work
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# when we don't have C++ support in the toolchain
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ifneq ($(BR2_INSTALL_LIBSTDCPP),y)
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GDB_CONF_OPTS += --disable-build-with-cxx
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endif
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# inprocess-agent can't be built statically
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ifeq ($(BR2_STATIC_LIBS),y)
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GDB_CONF_OPTS += --disable-inprocess-agent
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endif
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ifeq ($(BR2_PACKAGE_GDB_TUI),y)
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GDB_CONF_OPTS += --enable-tui
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else
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GDB_CONF_OPTS += --disable-tui
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endif
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ifeq ($(BR2_PACKAGE_GDB_PYTHON),y)
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GDB_CONF_OPTS += --with-python=$(TOPDIR)/package/gdb/gdb-python-config
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GDB_DEPENDENCIES += python
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else
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GDB_CONF_OPTS += --without-python
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endif
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ifeq ($(BR2_PACKAGE_EXPAT),y)
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GDB_CONF_OPTS += --with-expat
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GDB_CONF_OPTS += --with-libexpat-prefix=$(STAGING_DIR)/usr
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GDB_DEPENDENCIES += expat
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else
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GDB_CONF_OPTS += --without-expat
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endif
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ifeq ($(BR2_PACKAGE_XZ),y)
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GDB_CONF_OPTS += --with-lzma
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GDB_CONF_OPTS += --with-liblzma-prefix=$(STAGING_DIR)/usr
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GDB_DEPENDENCIES += xz
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else
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GDB_CONF_OPTS += --without-lzma
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endif
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ifeq ($(BR2_PACKAGE_ZLIB),y)
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GDB_CONF_OPTS += --with-zlib
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GDB_DEPENDENCIES += zlib
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else
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GDB_CONF_OPTS += --without-zlib
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endif
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ifeq ($(BR2_PACKAGE_GDB_PYTHON),)
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# This removes some unneeded Python scripts and XML target description
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# files that are not useful for a normal usage of the debugger.
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define GDB_REMOVE_UNNEEDED_FILES
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$(RM) -rf $(TARGET_DIR)/usr/share/gdb
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endef
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GDB_POST_INSTALL_TARGET_HOOKS += GDB_REMOVE_UNNEEDED_FILES
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endif
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# This installs the gdbserver somewhere into the $(HOST_DIR) so that
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# it becomes an integral part of the SDK, if the toolchain generated
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# by Buildroot is later used as an external toolchain. We install it
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# in debug-root/usr/bin/gdbserver so that it matches what Crosstool-NG
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# does.
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define GDB_SDK_INSTALL_GDBSERVER
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$(INSTALL) -D -m 0755 $(TARGET_DIR)/usr/bin/gdbserver \
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$(HOST_DIR)/$(GNU_TARGET_NAME)/debug-root/usr/bin/gdbserver
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endef
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ifeq ($(BR2_PACKAGE_GDB_SERVER),y)
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GDB_POST_INSTALL_TARGET_HOOKS += GDB_SDK_INSTALL_GDBSERVER
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endif
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# A few notes:
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# * --target, because we're doing a cross build rather than a real
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# host build.
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# * --enable-static because gdb really wants to use libbfd.a
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HOST_GDB_CONF_OPTS = \
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--target=$(GNU_TARGET_NAME) \
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--enable-static \
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--without-uiout \
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--disable-gdbtk \
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--without-x \
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--enable-threads \
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--disable-werror \
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--without-included-gettext \
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--with-curses \
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--without-mpfr \
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$(GDB_DISABLE_BINUTILS_CONF_OPTS)
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ifeq ($(BR2_PACKAGE_HOST_GDB_TUI),y)
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HOST_GDB_CONF_OPTS += --enable-tui
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else
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HOST_GDB_CONF_OPTS += --disable-tui
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endif
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ifeq ($(BR2_PACKAGE_HOST_GDB_PYTHON),y)
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HOST_GDB_CONF_OPTS += --with-python=$(HOST_DIR)/bin/python2
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HOST_GDB_DEPENDENCIES += host-python
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else ifeq ($(BR2_PACKAGE_HOST_GDB_PYTHON3),y)
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HOST_GDB_CONF_OPTS += --with-python=$(HOST_DIR)/bin/python3
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HOST_GDB_DEPENDENCIES += host-python3
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else
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HOST_GDB_CONF_OPTS += --without-python
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endif
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ifeq ($(BR2_PACKAGE_HOST_GDB_SIM),y)
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HOST_GDB_CONF_OPTS += --enable-sim
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else
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HOST_GDB_CONF_OPTS += --disable-sim
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endif
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# Since gdb 9, in-tree builds for GDB are not allowed anymore,
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# so we create a 'build' subdirectory in the gdb sources, and
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# build from there.
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HOST_GDB_SUBDIR = build
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define HOST_GDB_CONFIGURE_SYMLINK
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mkdir -p $(@D)/build
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ln -sf ../configure $(@D)/build/configure
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endef
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HOST_GDB_PRE_CONFIGURE_HOOKS += HOST_GDB_CONFIGURE_SYMLINK
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# legacy $arch-linux-gdb symlink
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define HOST_GDB_ADD_SYMLINK
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cd $(HOST_DIR)/bin && \
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ln -snf $(GNU_TARGET_NAME)-gdb $(ARCH)-linux-gdb
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endef
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HOST_GDB_POST_INSTALL_HOOKS += HOST_GDB_ADD_SYMLINK
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HOST_GDB_POST_INSTALL_HOOKS += gen_gdbinit_file
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$(eval $(autotools-package))
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$(eval $(host-autotools-package))
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