[FFmpeg-devel] compat/cuda/ptx2c: remove shell loop; fix BSD sed compat

This improves build times dramatically, and fixes building on macOS
---
 compat/cuda/ptx2c.sh | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

On 26.05.2020 19:42, rcombs wrote:
> This improves build times dramatically, and fixes building on macOS
> ---
>   compat/cuda/ptx2c.sh | 8 +++-----
>   1 file changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/compat/cuda/ptx2c.sh b/compat/cuda/ptx2c.sh
> index 0750e7a3b7..c41875a2d4 100755
> --- a/compat/cuda/ptx2c.sh
> +++ b/compat/cuda/ptx2c.sh
> @@ -27,10 +27,8 @@ IN="$2"
>   NAME="$(basename "$IN" | sed 's/\..*//')"
>   
>   printf "const char %s_ptx[] = \\" "$NAME" > "$OUT"
> -while IFS= read -r LINE
> -do
> -    printf "\n\t\"%s\\\n\"" "$(printf "%s" "$LINE" | sed -e 's/\r//g' -e 's/["\\]/\\&/g')" >> "$OUT"
> -done < "$IN"
> -printf ";\n" >> "$OUT"
> +echo >> "$OUT"
> +sed -e $'s/\r//g' -e 's/["\\]/\\&/g' -e $'s/^[[:space:]]*/\t"/' -e 's/$/\\n"/' < "$IN" >> "$OUT"
> +echo ";" >> "$OUT"
>   
>   exit 0
> 

Produces broken .ptx.c files:

> CC      libavfilter/vf_overlay_cuda.ptx.o
> libavfilter/vf_overlay_cuda.ptx.c:5:1: error: stray ‘\’ in program
>     5 | \n"
>       | ^
> libavfilter/vf_overlay_cuda.ptx.c:5:3: warning: missing terminating " character
>     5 | \n"
>       |   ^
> libavfilter/vf_overlay_cuda.ptx.c:5:3: error: missing terminating " character
> libavfilter/vf_overlay_cuda.ptx.c:5:2: error: ‘n’ undeclared here (not in a function)
>     5 | \n"
>       |  ^
> libavfilter/vf_overlay_cuda.ptx.c:6:10: error: expected ‘,’ or ‘;’ before numeric constant
>     6 | .version 3.2\n"
>       |          ^~~
> libavfilter/vf_overlay_cuda.ptx.c:6:13: error: stray ‘\’ in program
>     6 | .version 3.2\n"
>       |             ^
> libavfilter/vf_overlay_cuda.ptx.c:6:15: warning: missing terminating " character
>     6 | .version 3.2\n"
>       |               ^
> libavfilter/vf_overlay_cuda.ptx.c:6:15: error: missing terminating " character
> libavfilter/vf_overlay_cuda.ptx.c:7:14: error: stray ‘\’ in program
>     7 | .target sm_30\n"
>       |              ^
> libavfilter/vf_overlay_cuda.ptx.c:7:16: warning: missing terminating " character
>     7 | .target sm_30\n"
>       |                ^
> libavfilter/vf_overlay_cuda.ptx.c:7:16: error: missing terminating " character
> libavfilter/vf_overlay_cuda.ptx.c:8:17: error: stray ‘\’ in program
>     8 | .address_size 64\n"
>       |                 ^
> libavfilter/vf_overlay_cuda.ptx.c:8:19: warning: missing terminating " character
>     8 | .address_size 64\n"
>       |                   ^
> libavfilter/vf_overlay_cuda.ptx.c:8:19: error: missing terminating " character
> libavfilter/vf_overlay_cuda.ptx.c:9:1: error: stray ‘\’ in program
>     9 | \n"
>       | ^
> libavfilter/vf_overlay_cuda.ptx.c:9:3: warning: missing terminating " character
>     9 | \n"
>       |   ^
> libavfilter/vf_overlay_cuda.ptx.c:9:3: error: missing terminating " character
> libavfilter/vf_overlay_cuda.ptx.c:11:1: error: stray ‘\’ in program
>    11 | \n"
>       | ^

And a lot more of the same.

The generated .ptx.c file also looks horribly garbled up all over.