On Sat, Nov 30, 2024 at 01:56:51AM -0500, Brad Smith wrote:
> While updating Alephone I ran into a linking issue with the GL backend. I
> disabled the GL backend so at least the core game engine could be updated
> when working on updating FFmpeg.
>
> But circling back to this now. It seems like our Mesa libGL is missing
> this function as well as a lot of others. When I compare our Mesa libGL
> to Linux and FreeBSD's copies; they have a lot more functions including the
> missing function below. They both have exactly the same number of functions,
> 3493, compared to our 1655.
They have a layer of indirection and use NVIDIA's libglvnd for libGL.
>
> ld: error: undefined symbol: glBlitFramebufferEXT
Extensions are supposed to be loaded dynamically.
Multiple libraries such as libepoxy provide wrappers,
perhaps libglvnd is also doing that.
>
> openbsd-arm64$ objdump -T libGL.so.19.1 | grep glBlitFramebuffer
> 00000000000baec8 g DF .text 00000000000000ac glBlitFramebuffer
>
> brad@freebsd-vmware-amd64:/usr/local/lib $ objdump -T libGL.so.1.7.0 | grep
> glBlitFramebuffer
> 00000000000623a0 g DF wtext 0000000000000000
> glBlitFramebufferANGLE
> 0000000000062380 g DF wtext 0000000000000000
> glBlitFramebuffer
> 00000000000623c0 g DF wtext 0000000000000000
> glBlitFramebufferEXT
> 00000000000623e0 g DF wtext 0000000000000000
> glBlitFramebufferNV
>
>
> Index: Makefile
> ===================================================================
> RCS file: /cvs/ports/games/alephone/alephone/Makefile,v
> retrieving revision 1.36
> diff -u -p -u -p -r1.36 Makefile
> --- Makefile 24 Nov 2024 08:54:58 -0000 1.36
> +++ Makefile 27 Nov 2024 03:30:34 -0000
> @@ -5,6 +5,7 @@ COMMENT = open source game engine based
> DATE = 20240822
> DISTNAME = AlephOne-${DATE}
> PKGNAME = alephone-1.10
> +REVISION = 0
> CATEGORIES = games x11
> EXTRACT_SUFX = .tar.bz2
>
> @@ -19,12 +20,10 @@ PERMIT_PACKAGE = Yes
>
> SITES =
> https://github.com/Aleph-One-Marathon/alephone/releases/download/release-${DATE}/
>
> -WANTLIB += ${COMPILER_LIBCXX} SDL2 SDL2_image SDL2_net
> +WANTLIB += ${COMPILER_LIBCXX} GL GLU SDL2 SDL2_image SDL2_net
> WANTLIB += SDL2_ttf avcodec avformat avutil boost_filesystem boost_system
> WANTLIB += c curl m openal png sndfile swresample swscale z zzip
>
> -# GL GLU
> -
> # C++17
> COMPILER = base-clang ports-gcc
>
> @@ -44,8 +43,7 @@ RUN_DEPENDS = devel/desktop-file-utils
>
> USE_GMAKE = Yes
> CONFIGURE_STYLE = gnu
> -CONFIGURE_ARGS += --disable-opengl \
> - --without-miniupnpc
> +CONFIGURE_ARGS += --without-miniupnpc
> CONFIGURE_ENV = CPPFLAGS=-I${LOCALBASE}/include \
> LDFLAGS=-L${LOCALBASE}/lib
>
>
