d5e3d066c7
Add backtrace functions for sandbox, including: - os_backtrace() to collect addresses into a caller-supplied buffer - os_backtrace_symbols() to convert addresses to symbol strings - os_backtrace_symbols_free() to free the symbol array The libbacktrace library (bundled with GCC) reads DWARF debug information to provide detailed symbol resolution including function names (even for static functions), source file paths, and line numbers. The sandbox backtrace implementation wraps these OS functions to implement the generic backtrace API (backtrace_init, backtrace_get_syms, etc.). Enable it for just the 'sandbox' board. Add the library for the Rust example too. Co-developed-by: Claude <noreply@anthropic.com> Signed-off-by: Simon Glass <simon.glass@canonical.com>
48 lines
1.5 KiB
Makefile
48 lines
1.5 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0+
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#
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# Configuration and helpers for U-Boot library examples
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#
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# Copyright 2025 Canonical Ltd.
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# Written by Simon Glass <simon.glass@canonical.com>
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# For standalone builds, provide default values
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EXAMPLE_DIR ?= .
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OUTDIR ?= .
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CC ?= gcc
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SDL_CONFIG ?= sdl2-config
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PLATFORM_LIBS ?= $(shell $(SDL_CONFIG) --libs)
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LIB_STATIC_LDS ?= static.lds
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# The main Makefile passes in Q=@ for quiet output
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Q ?=
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# Common compiler flags for programs using system headers
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SYSTEM_CFLAGS := -I$(UBOOT_BUILD)/include \
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-idirafter$(srctree)/include \
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-include $(srctree)/include/linux/compiler_attributes.h
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# Common compiler flags for programs using U-Boot headers (these match the
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# U-Boot internal build)
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UBOOT_CFLAGS := -nostdinc \
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-isystem $(shell $(CC) -print-file-name=include) \
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-I$(UBOOT_BUILD)/include \
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-I$(srctree)/include \
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-I$(srctree)/arch/sandbox/include \
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-include $(UBOOT_BUILD)/include/config.h \
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-include $(srctree)/include/linux/kconfig.h \
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-I$(srctree)/dts/upstream/include \
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"-DMBEDTLS_CONFIG_FILE=\"mbedtls_def_config.h\"" \
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-I$(srctree)/lib/mbedtls \
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-I$(srctree)/lib/mbedtls/port \
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-I$(srctree)/lib/mbedtls/external/mbedtls \
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-I$(srctree)/lib/mbedtls/external/mbedtls/include \
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-Wno-builtin-declaration-mismatch \
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-D__KERNEL__ -DCONFIG_SYS_TEXT_BASE=0
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# Linking flags
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SHARED_LDFLAGS := -L$(UBOOT_BUILD) -lu-boot -Wl,-rpath,$(UBOOT_BUILD)
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STATIC_LDFLAGS := -Wl,-T,$(LIB_STATIC_LDS) \
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-Wl,--whole-archive $(UBOOT_BUILD)/libu-boot.a \
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-Wl,--no-whole-archive \
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-lpthread -ldl -lbacktrace $(PLATFORM_LIBS) -Wl,-z,noexecstack
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