NetCube-Systems-Austria/kumquat-buildroot
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toolchain: mark sysroot as 'safe' path for gdb auto-load

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gdb can automatically load certain files as described in [1]. Such files
could install pretty-printers for complex data structures.

libstdcxx (C++ standard library) provided by gcc, is one example of a
library for which such auto-load file is available. But there are other
examples too, like libglib2.

However, gdb will only auto-load files if the file is located in one of the
locations treated as 'safe'. The Buildroot sysroot is not by default in that
list.

Provide a better debugging experience by adding the sysroot to the 'safe'
list, via the gdbinit file prepared by Buildroot.

[1] https://sourceware.org/gdb/onlinedocs/gdb/objfile_002dgdbdotext-file.html

Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Thomas De Schampheleire 2021-06-08 17:18:39 +02:00 committed by Thomas Petazzoni
parent 049135c409
commit 6fb3216a80
1 changed files with 2 additions and 1 deletions
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3
toolchain/helpers.mk
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@ -483,7 +483,8 @@ check_toolchain_ssp = \
#
gen_gdbinit_file = \
mkdir -p $(STAGING_DIR)/usr/share/buildroot/ ; \
echo "set sysroot $(STAGING_DIR)" > $(STAGING_DIR)/usr/share/buildroot/gdbinit
echo "set sysroot $(STAGING_DIR)" > $(STAGING_DIR)/usr/share/buildroot/gdbinit ; \
echo "add-auto-load-safe-path $(STAGING_DIR)" >> $(STAGING_DIR)/usr/share/buildroot/gdbinit
# Given a path, determine the relative prefix (../) needed to return to the
# root level. Note that the last component is treated as a file component; use a