Re: [RESEND PATCH] build: remove the variable NM in gen_ll_addressable_symbols.sh

[Marek Behun <marek.behun@nic.cz>]

On Wed, 21 Jul 2021 09:56:07 +0200
Patrick Delaunay <patrick.delaunay@foss.st.com> wrote:

> 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>
> ---
> Resend with correct commit message for patman
>   s/Serie-cc/Series-cc/
> 
> 
>  Makefile                              | 2 +-
>  scripts/Makefile.spl                  | 2 +-
>  scripts/gen_ll_addressable_symbols.sh | 5 ++++-
>  3 files changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/Makefile b/Makefile
> index ca2432c8ce..140dea09f4 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1736,7 +1736,7 @@ u-boot-keep-syms-lto_c := $(patsubst %.o,%.c,$(u-boot-keep-syms-lto))
>  
>  quiet_cmd_keep_syms_lto = KSL     $@
>        cmd_keep_syms_lto = \
> -	NM=$(NM) $(srctree)/scripts/gen_ll_addressable_symbols.sh $^ >$@
> +	$(srctree)/scripts/gen_ll_addressable_symbols.sh $(NM) $^ > $@
>  
>  quiet_cmd_keep_syms_lto_cc = KSLCC   $@
>        cmd_keep_syms_lto_cc = \
> diff --git a/scripts/Makefile.spl b/scripts/Makefile.spl
> index 5be1a9ba1b..25a3e7fa52 100644
> --- a/scripts/Makefile.spl
> +++ b/scripts/Makefile.spl
> @@ -459,7 +459,7 @@ u-boot-spl-keep-syms-lto_c := \
>  
>  quiet_cmd_keep_syms_lto = KSL     $@
>        cmd_keep_syms_lto = \
> -	NM=$(NM) $(srctree)/scripts/gen_ll_addressable_symbols.sh $^ >$@
> +	$(srctree)/scripts/gen_ll_addressable_symbols.sh $(NM) $^ > $@
>  
>  quiet_cmd_keep_syms_lto_cc = KSLCC   $@
>        cmd_keep_syms_lto_cc = \
> diff --git a/scripts/gen_ll_addressable_symbols.sh b/scripts/gen_ll_addressable_symbols.sh
> index 3978a39d97..b8840dd011 100755
> --- a/scripts/gen_ll_addressable_symbols.sh
> +++ b/scripts/gen_ll_addressable_symbols.sh
> @@ -5,8 +5,11 @@
>  # Generate __ADDRESSABLE(symbol) for every linker list entry symbol, so that LTO
>  # does not optimize these symbols away
>  
> +# The expected parameter of this script is the command requested to have
> +# the U-Boot symbols to parse, for example: $(NM) $(u-boot-main)
> +
>  set -e
>  
>  echo '#include <common.h>'
> -$NM "$@" 2>/dev/null | grep -oe '_u_boot_list_2_[a-zA-Z0-9_]*_2_[a-zA-Z0-9_]*' | \
> +$@ 2>/dev/null | grep -oe '_u_boot_list_2_[a-zA-Z0-9_]*_2_[a-zA-Z0-9_]*' | \
>  	sort -u | sed -e 's/^\(.*\)/extern char \1[];\n__ADDRESSABLE(\1);/'

Shouldn't we use "$@" ? In case the arguments contain spaces?

Marek