[FFmpeg-devel] [PATCH 1/2] configure: don't force specific C++ standard library linking

[Hendrik Leppkes]

On Wed, Sep 6, 2023 at 12:14 AM Kacper Michajłow <kasper93 at gmail.com> wrote:
>
> Other C++ standard libraries exist. Also, this is not a proper way to
> link the standard library anyway. Instead when a C++ dependency is
> detected, switch to the C++ compiler driver to properly link everything.
>
> Signed-off-by: Kacper Michajłow <kasper93 at gmail.com>
> ---
>  configure | 27 ++++++++++++++++++---------
>  1 file changed, 18 insertions(+), 9 deletions(-)
>
> diff --git a/configure b/configure
> index bd7f7697c8..90ee6e4f7d 100755
> --- a/configure
> +++ b/configure
> @@ -3584,11 +3584,9 @@ bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr
>  caca_outdev_deps="libcaca"
>  decklink_deps_any="libdl LoadLibrary"
>  decklink_indev_deps="decklink threads"
> -decklink_indev_extralibs="-lstdc++"
>  decklink_indev_suggest="libzvbi"
>  decklink_outdev_deps="decklink threads"
>  decklink_outdev_suggest="libklvanc"
> -decklink_outdev_extralibs="-lstdc++"
>  dshow_indev_deps="IBaseFilter"
>  dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
>  fbdev_indev_deps="linux_fb_h"
> @@ -4684,7 +4682,6 @@ msvc_common_flags(){
>              -march=*)             ;;
>              -lz)                  echo zlib.lib ;;
>              -lx264)               echo libx264.lib ;;
> -            -lstdc++)             ;;
>              -l*)                  echo ${flag#-l}.lib ;;
>              -LARGEADDRESSAWARE)   echo $flag ;;
>              -L*)                  echo -libpath:${flag#-L} ;;

Should probably keep this one, it may come from a pkg-config file or
some other source, and you don't want it forwarded to cl.exe

- Hendrik