[FFmpeg-devel] [PATCH 1/1] tools/cl2c: Strip full path from input file in embedded

Vagrant Cascadian vagrant at reproducible-builds.org
Sat Nov 13 22:05:28 EET 2021


On 2021-10-18, Vagrant Cascadian wrote:
> Without this patch, the full build path gets embedded into various
> binaries shipped in the package, for example, libavfilter.a contains
> a reference to:
>
>   #line 1 "/build/1st/ffmpeg-4.3.2/libavfilter/opencl/avgblur.cl"
>
> By not embedding the build path, it makes it easier to recreate the
> build environment and reproduce the build:
>
>   https://reproducible-builds.org/docs/build-path/
>
> Originally submitted to Debian as:
>
>   https://bugs.debian.org/985187
>
> Signed-off-by: Vagrant Cascadian <vagrant at reproducible-builds.org>

Ping?

live well,
  vagrant

> ---
>  tools/cl2c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/tools/cl2c b/tools/cl2c
> index e3f92bab1c..48444e61a7 100755
> --- a/tools/cl2c
> +++ b/tools/cl2c
> @@ -23,11 +23,13 @@ input="$1"
>  output="$2"
>  
>  name=$(basename "$input" | sed 's/.cl$//')
> +# Avoid embedded the build path, using only the basename of the input file.
> +base_input=$(basename "$input")
>  
>  cat >$output <<EOF
>  // Generated from $input
>  const char *ff_opencl_source_$name =
> -"#line 1 \"$input\"\n"
> +"#line 1 \"$base_input\"\n"
>  EOF
>  
>  # Convert \ to \\ and " to \", then add " to the start and end of the line.
> -- 
> 2.33.0
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