Bug 760546 – media-libs/mesa-20.2.4 - ld: src/gbm/libgbm.so.1.0.0.p/main_backend.c.o:(.got2+0x4): undefined reference to `gbm_dri_backend'

• Status: RESOLVED WONTFIX
• Product: Gentoo Linux

[Description ernsteiswuerfel 2020-12-17 22:28:17 UTC]

Created attachment 678640 [details]
build.log

Discovered that during tatt testing when building with these flags:

USE='-X -classic -dri3 -egl gallium gbm -gles1 -gles2 -osmesa -unwind -valgrind -vulkan -vulkan-overlay -wayland -xa -zink zstd' failed for =media-libs/mesa-20.2.4


[...]
[79/268] powerpc-unknown-linux-gnu-gcc  -o src/gbm/libgbm.so.1.0.0 src/gbm/libgbm.so.1.0.0.p/main_backend.c.o src/gbm/libgbm.so.1.0.0.p/main_gbm.c.o -Wl,--as-needed -Wl,--no-undefined -shared -fPIC -Wl,--start-group -Wl,-soname,libgbm.so.1 -Os -mcpu=7450 -pipe -Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu src/loader/libloader.a src/util/libmesa_util.a src/util/format/libmesa_format.a src/util/libxmlconfig.a -Wl,--gc-sections /usr/lib/libwayland-server.so -ldl -pthread /usr/lib/libz.so -latomic -lm /usr/lib/libexpat.so /usr/lib/libdrm.so -latomic /usr/lib/libzstd.so -latomic -Wl,--end-group
FAILED: src/gbm/libgbm.so.1.0.0 
powerpc-unknown-linux-gnu-gcc  -o src/gbm/libgbm.so.1.0.0 src/gbm/libgbm.so.1.0.0.p/main_backend.c.o src/gbm/libgbm.so.1.0.0.p/main_gbm.c.o -Wl,--as-needed -Wl,--no-undefined -shared -fPIC -Wl,--start-group -Wl,-soname,libgbm.so.1 -Os -mcpu=7450 -pipe -Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu src/loader/libloader.a src/util/libmesa_util.a src/util/format/libmesa_format.a src/util/libxmlconfig.a -Wl,--gc-sections /usr/lib/libwayland-server.so -ldl -pthread /usr/lib/libz.so -latomic -lm /usr/lib/libexpat.so /usr/lib/libdrm.so -latomic /usr/lib/libzstd.so -latomic -Wl,--end-group
/usr/lib/gcc/powerpc-unknown-linux-gnu/9.3.0/../../../../powerpc-unknown-linux-gnu/bin/ld: src/gbm/libgbm.so.1.0.0.p/main_backend.c.o:(.got2+0x4): undefined reference to `gbm_dri_backend'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
 * ERROR: media-libs/mesa-20.2.4::gentoo failed (compile phase):

[Comment 1 ernsteiswuerfel 2020-12-17 22:28:46 UTC]

Created attachment 678643 [details]
emerge --info

[Comment 2 ernsteiswuerfel 2021-01-23 19:33:15 UTC]

Had a 2nd look at the bug. It is reproducible and happens when building with -egl. Same build succeeds wenn building with +egl.

So it's about the 'egl' USE-flag and can occur on a non-desktop profile or when no deps requiring +egl are installed (e.g. cairo). I guess it won't happen on a desktop profile where mesa states it requires +egl and the USE-flag combination tatt created will not run in this bug 'cause it won't start building.

[Comment 3 Tom Gillespie 2021-05-30 11:13:22 UTC]

I'm seeing something similar on musl hardened when building against 21.0.3, however 20.3.5 works, so maybe that can be used as a way to figure out what is going wrong?

[Comment 4 Matt Turner 2021-12-05 22:39:27 UTC]

IUSE=gbm is gone, gbm is always enabled now.