7130ceb267
This commit slightly improves the external toolchain backend, and the gdb build logic to create a file named $(STAGING_DIR)/usr/share/buildroot/gdbinit which can be used as a gdbinit file using gdb -x option. This allows gdb to automatically use the proper sysroot to find libraries. The initial insight for this patch comes from the report of Oded Hanson <OHanson@xsightsys.com>, who found an issue with the Eclipse Buildroot plugin, which was setting a solib-path in gdb, but not a sysroot. Setting a solib-path was enough to find shared libraries, but not the dynamic linker. And since Eclipse doesn't allow to set the sysroot in any other way than giving a gdbinit file, it makes sense to have Buildroot generate a gdbinit file (which can be used in other situations than Eclipse). To achieve this, this commit introduces a gen_gdbinit_file helper in toolchain/helpers.mk, and uses it for the internal toolchain and external toolchain backends. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> [ThomasDS: minor updates in commit message] Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
133 lines
3.8 KiB
Makefile
133 lines
3.8 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 = $(BR2_GNU_MIRROR)/gdb
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ifeq ($(BR2_arc),y)
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GDB_SITE = $(call github,foss-for-synopsys-dwc-arc-processors,gdb,$(GDB_VERSION))
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GDB_SOURCE = gdb-$(GDB_VERSION).tar.gz
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GDB_FROM_GIT = y
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endif
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ifeq ($(BR2_microblaze),y)
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GDB_SITE = $(call github,Xilinx,gdb,$(GDB_VERSION))
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GDB_SOURCE = gdb-$(GDB_VERSION).tar.gz
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GDB_FROM_GIT = y
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endif
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ifeq ($(GDB_VERSION),6.7.1-avr32-2.1.5)
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GDB_SITE = ftp://www.at91.com/pub/buildroot/
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endif
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GDB_SOURCE ?= gdb-$(GDB_VERSION).tar.bz2
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GDB_LICENSE = GPLv2+ LGPLv2+ GPLv3+ LGPLv3+
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GDB_LICENSE_FILES = COPYING COPYING.LIB COPYING3 COPYING3.LIB
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# We only want gdbserver and not the entire debugger.
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ifeq ($(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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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.
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HOST_GDB_DEPENDENCIES = host-expat
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# Apply the Xtensa specific patches
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XTENSA_CORE_NAME = $(call qstrip, $(BR2_XTENSA_CORE_NAME))
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ifneq ($(XTENSA_CORE_NAME),)
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define GDB_XTENSA_PRE_PATCH
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tar xf $(BR2_XTENSA_OVERLAY_DIR)/xtensa_$(XTENSA_CORE_NAME).tar \
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-C $(@D) --strip-components=1 gdb
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endef
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GDB_PRE_PATCH_HOOKS += GDB_XTENSA_PRE_PATCH
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HOST_GDB_PRE_PATCH_HOOKS += GDB_XTENSA_PRE_PATCH
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endif
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GDB_CONF_ENV = \
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ac_cv_prog_MAKEINFO=missing \
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ac_cv_type_uintptr_t=yes \
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gt_cv_func_gettext_libintl=yes \
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ac_cv_func_dcgettext=yes \
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gdb_cv_func_sigsetjmp=yes \
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bash_cv_func_strcoll_broken=no \
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bash_cv_must_reinstall_sighandlers=no \
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bash_cv_func_sigsetjmp=present \
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bash_cv_have_mbstate_t=yes \
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gdb_cv_func_sigsetjmp=yes
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GDB_CONF_OPT = \
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--without-uiout \
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--disable-tui \
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--disable-gdbtk \
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--without-x \
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--disable-sim \
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$(if $(BR2_PACKAGE_GDB_SERVER),--enable-gdbserver) \
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--with-curses \
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--without-included-gettext \
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--disable-werror
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# This removes some unneeded Python scripts and XML target description
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# files that are not useful for a normal usage of the debugger.
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define GDB_REMOVE_UNNEEDED_FILES
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$(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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# 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)/usr/$(GNU_TARGET_NAME)/debug-root/usr/bin/gdbserver
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endef
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ifeq ($(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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# * --disable-shared, otherwise the old 6.7 version specific to AVR32
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# doesn't build because it wants to link a shared libbfd.so against
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# non-PIC liberty.a.
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HOST_GDB_CONF_OPT = \
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--target=$(GNU_TARGET_NAME) \
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--enable-static --disable-shared \
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--without-uiout \
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--disable-tui \
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--disable-gdbtk \
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--without-x \
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--enable-threads \
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--disable-werror \
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--without-included-gettext \
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--disable-sim
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ifeq ($(GDB_FROM_GIT),y)
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HOST_GDB_DEPENDENCIES += host-texinfo
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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)/usr/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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