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With LTO activated, the buildman tools failed with an error on my configuration (Ubuntu 20.04, stm32mp15_trusted_defconfig) with the error: ../arm-linux-gnueabi/bin/nm: scripts/gen_ll_addressable_symbols.sh: file format not recognized It seems the shell variable initialization NM=$(NM) is not correctly interpreted when shell is started in the Makefile, but I have not this issue when I compile the same target without buildman. I don't found the root reason of the problem but I solve it by providing $(NM) as script parameter instead using a shell variable. The command executed is identical: cmd_keep-syms-lto.c := NM=arm-none-linux-gnueabihf-gcc-nm \ u-boot/scripts/gen_ll_addressable_symbols.sh arch/arm/cpu/built-in.o \ .... net/built-in.o >keep-syms-lto.c cmd_keep-syms-lto.c := u-boot/scripts/gen_ll_addressable_symbols.sh \ arm-none-linux-gnueabihf-gcc-nm arch/arm/cpu/built-in.o \ ... net/built-in.o > keep-syms-lto.c Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
16 lines
545 B
Bash
Executable File
16 lines
545 B
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0+
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# Copyright (C) 2020 Marek Behún <marek.behun@nic.cz>
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# Generate __ADDRESSABLE(symbol) for every linker list entry symbol, so that LTO
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# does not optimize these symbols away
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# The expected parameter of this script is the command requested to have
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# the U-Boot symbols to parse, for example: $(NM) $(u-boot-main)
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set -e
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echo '#include <common.h>'
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$@ 2>/dev/null | grep -oe '_u_boot_list_2_[a-zA-Z0-9_]*_2_[a-zA-Z0-9_]*' | \
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sort -u | sed -e 's/^\(.*\)/extern char \1[];\n__ADDRESSABLE(\1);/'
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