![Romain Naour](/assets/img/avatar_default.png)
https://sourceware.org/ml/gdb-announce/2018/msg00001.html gdb 8.1 has a new optional dependency on mpfr, which according to the NEWS file: GDB now uses the GNU MPFR library, if available, to emulate target floating-point arithmetic during expression evaluation when the target uses different floating-point formats than the host. At least version 3.1 of GNU MPFR is required. So for the target gdb, this is unnecessary, and therefore we forcefully disable mpfr support by passing --without-mpfr. For the host gdb, it would potentially be useful, but since it's a new feature that isn't essential, we for now keep it disabled as well. An option may be added later if needed. To avoid gnulib issues with uClibc/musl, we need to pass additional configure/make variables, like is done in OpenEmbedded [1]. [1] http://git.openembedded.org/openembedded-core/tree/meta/recipes-devtools/gdb/gdb_8.1.bb?id=02664a8dcd1ebb6cd77248e1b97a78390ea06033#n9 We re-add the same patches as the ones present for gdb 8.0.1, except 0004-nat-linux-ptrace.c-add-missing-gdb_byte-cast.patch, which was merged upstream. Signed-off-by: Romain Naour <romain.naour@gmail.com> [Thomas: change mpfr handling.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
250 lines
7.8 KiB
Makefile
250 lines
7.8 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-$(GDB_VERSION).tar.gz
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GDB_FROM_GIT = y
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endif
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GDB_LICENSE = GPL-2.0+, LGPL-2.0+, GPL-3.0+, LGPL-3.0+
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GDB_LICENSE_FILES = COPYING COPYING.LIB COPYING3 COPYING3.LIB
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# We only want gdbserver and not the entire debugger.
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ifeq ($(BR2_PACKAGE_GDB_DEBUGGER),)
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GDB_SUBDIR = gdb/gdbserver
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HOST_GDB_SUBDIR = .
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else
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GDB_DEPENDENCIES = ncurses \
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$(if $(BR2_PACKAGE_LIBICONV),libiconv)
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endif
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# For the host variant, we really want to build with XML support,
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# which is needed to read XML descriptions of target architectures. We
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# also need ncurses.
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HOST_GDB_DEPENDENCIES = host-expat host-ncurses
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# Disable building documentation
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GDB_MAKE_OPTS += MAKEINFO=true
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GDB_INSTALL_TARGET_OPTS += MAKEINFO=true DESTDIR=$(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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$(GDB_DISABLE_BINUTILS_CONF_OPTS) \
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$(if $(BR2_PACKAGE_GDB_SERVER),--enable-gdbserver,--disable-gdbserver) \
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--with-curses \
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--without-included-gettext \
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--disable-werror \
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--enable-static \
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--without-mpfr
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# When gdb is built as C++ application for ARC it segfaults at runtime
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# So we pass --disable-build-with-cxx config option to force gdb not to
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# be built as C++ app.
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ifeq ($(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 ($(BR2_INSTALL_LIBSTDCPP),y)
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GDB_CONF_OPTS += --disable-build-with-cxx
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endif
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ifeq ($(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=$(HOST_DIR)/bin/python2
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HOST_GDB_DEPENDENCIES += host-python
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else
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HOST_GDB_CONF_OPTS += --without-python
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endif
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ifeq ($(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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# 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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