[Buildroot] [PATCH v4 2/2] apply-patches.sh: don't print anything when "make -s" is used

[Yann E. MORIN <yann.morin.1998@free.fr>]

Fabio, All,

On 2014-08-01 13:24 +0200, Fabio Porcedda spake thusly:
> The make "-s" option is used to enable the "Silent operation" so if that
> option is used don't print anything as far as there isn't any error.
> 
> Add the "-s" option to "apply-patches.sh" to enable silent operation.
> 
> Also add the "BR_SILENT" variable the contain "YES" when "make -s" is
> used so others parts can use it to silence the build as well.
> 
> Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>

Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

HOwever, I have a comment about it, see below...

> ---
>  Makefile                         |  2 ++
>  package/Makefile.in              |  2 +-
>  support/scripts/apply-patches.sh | 17 ++++++++++++++---
>  3 files changed, 17 insertions(+), 4 deletions(-)
> 
> diff --git a/Makefile b/Makefile
> index c82b07f..73eb033 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -198,6 +198,8 @@ else
>    Q = @
>  endif
>  
> +BR_SILENT = $(if $(findstring s,$(MAKEFLAGS)),YES)

Unfortunately, that also matches '--warn-undefined-variables' since it
has an 's' in it. It is the onlt long option with an 's' in it, for
which there is no corresponding short option. All other long options
with an 's' in them have corresponding short options, and that's what
appears in MAKEFLAGS.

I think we can well live with the fact that --warn-undefined-variables
would trigger a silent patching, because this should really only be
rarely used, if at all, because we do rely on variables not being
defined, so this is not an error, not even a warning.

That's why I added my reviewed tag.

Regards,
Yann E. MORIN.

>  # we want bash as shell
>  SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
>  	 else if [ -x /bin/bash ]; then echo /bin/bash; \
> diff --git a/package/Makefile.in b/package/Makefile.in
> index d17115b..c00c4f3 100644
> --- a/package/Makefile.in
> +++ b/package/Makefile.in
> @@ -218,7 +218,7 @@ FLEX := $(shell which flex || type -p flex)
>  BISON := $(shell which bison || type -p bison)
>  SED := $(shell which sed || type -p sed) -i -e
>  
> -APPLY_PATCHES = support/scripts/apply-patches.sh
> +APPLY_PATCHES = support/scripts/apply-patches.sh $(if $(BR_SILENT),-s)
>  
>  HOST_CPPFLAGS  = -I$(HOST_DIR)/usr/include
>  HOST_CFLAGS   ?= -O2
> diff --git a/support/scripts/apply-patches.sh b/support/scripts/apply-patches.sh
> index 37f2d81..16e0b41 100755
> --- a/support/scripts/apply-patches.sh
> +++ b/support/scripts/apply-patches.sh
> @@ -6,6 +6,8 @@
>  # (c) 2002 Erik Andersen <andersen@codepoet.org>
>  #
>  # Parameters:
> +# - "-s",optional. Silent operation, don't print anything if there
> +# isn't any error.
>  # - the build directory, optional, default value is '.'. The place where are
>  # the package sources.
>  # - the patch directory, optional, default '../kernel-patches'. The place
> @@ -28,6 +30,13 @@
>  # applied. The list of the patches applied is stored in '.applied_patches_list'
>  # file in the build directory.
>  
> +silent=
> +if [ "$1" = "-s" ] ; then
> +    # add option to be used by the patch tool
> +    silent=-s
> +    shift
> +fi
> +
>  # Set directories from arguments, or use defaults.
>  builddir=${1-.}
>  patchdir=${2-../kernel-patches}
> @@ -77,14 +86,16 @@ function apply_patch {
>  	return 0
>  	;;
>      esac
> -    echo ""
> -    echo "Applying $patch using ${type}: "
> +    if [ -z "$silent" ] ; then
> +	echo ""
> +	echo "Applying $patch using ${type}: "
> +    fi
>      if [ ! -e "${path}/$patch" ] ; then
>  	echo "Error: missing patch file ${path}/$patch"
>  	exit 1
>      fi
>      echo $patch >> ${builddir}/.applied_patches_list
> -    ${uncomp} "${path}/$patch" | patch -g0 -p1 -E -d "${builddir}" -t -N
> +    ${uncomp} "${path}/$patch" | patch $silent -g0 -p1 -E -d "${builddir}" -t -N
>      if [ $? != 0 ] ; then
>          echo "Patch failed!  Please fix ${patch}!"
>  	exit 1
> -- 
> 2.0.3
> 

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