Bug#1055540: obs-time-source: FTBFS on several archs: linker input file not found

[Eriberto Mota]

Some tests were made over Debian, Alpine and Fedora and the issue causing
the FTBFS is present only on Debian. The Meson finds the libobs, but fails
to build using it. Maybe it can be something related to #998853.

The upstream doesn't have a solution because he uses Alpine and the build
is perfect there (this bug is unreproducible outside of Debian).

My solution (or temporary solution): commonly, plugins for OBS are build
with CMake, so I made a patch[1] to use it instead of Meson. This solution
works fine and it is based in CMakeLists.txt files provided by Exeldro in
several plugins, like obs-move-transition[2].

[1] 
https://salsa.debian.org/debian/obs-time-source/-/blob/debian/master/debian/patches/010_use-cmake.patch
[2] 
https://salsa.debian.org/debian/obs-move-transition/-/blob/debian/master/CMakeLists.txt

Eriberto

Bug#1055540: obs-time-source: FTBFS on several archs: linker input file not found

[Joao Eriberto Mota Filho]

Package: obs-time-source
Version: 0.1-1
Severity: serious
Tags: upstream ftbfs
Justification: Fails to Build from Source
X-Debbugs-Cc: ~krystianch/public-in...@lists.sr.ht

The package fails to build from source on several architectures.

An example for arm64:

cd obj-aarch64-linux-gnu && LC_ALL=C.UTF-8 ninja -j4 -v
[1/2] cc -Itime-source.so.p -I. -I.. -I/usr/include/obs 
-I/usr/include/pango-1.0 -I/usr/include/glib-2.0 
-I/usr/lib/aarch64-linux-gnu/glib-2.0/include -I/usr/include/harfbuzz 
-I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/libmount 
-I/usr/include/blkid -I/usr/include/fribidi -I/usr/include/cairo 
-I/usr/include/pixman-1 -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall 
-Winvalid-pch -Wextra -Wpedantic -g -O2 -ffile-prefix-map=/<>=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -mbranch-protection=standard -Wdate-time 
-D_FORTIFY_SOURCE=2 -fPIC -pthread -DHAVE_OBSCONFIG_H -DSIMDE_ENABLE_OPENMP 
'$<$,$>:-fopenmp-simd>'
 
'$<$,$>:-fopenmp-simd>'
 -MD -MQ time-source.so.p/time-source.c.o -MF 
time-source.so.p/time-source.c.o.d -o time-source.so.p/time-source.c.o -c 
../time-source.c
FAILED: time-source.so.p/time-source.c.o 
cc -Itime-source.so.p -I. -I.. -I/usr/include/obs -I/usr/include/pango-1.0 
-I/usr/include/glib-2.0 -I/usr/lib/aarch64-linux-gnu/glib-2.0/include 
-I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 
-I/usr/include/libmount -I/usr/include/blkid -I/usr/include/fribidi 
-I/usr/include/cairo -I/usr/include/pixman-1 -fdiagnostics-color=always 
-D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wextra -Wpedantic -g -O2 
-ffile-prefix-map=/<>=. -fstack-protector-strong 
-fstack-clash-protection -Wformat -Werror=format-security 
-mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -pthread 
-DHAVE_OBSCONFIG_H -DSIMDE_ENABLE_OPENMP 
'$<$,$>:-fopenmp-simd>'
 
'$<$,$>:-fopenmp-simd>'
 -MD -MQ time-source.so.p/time-source.c.o -MF 
time-source.so.p/time-source.c.o.d -o time-source.so.p/time-source.c.o -c 
../time-source.c
../time-source.c: In function ‘time_source_update’:
../time-source.c:95:9: warning: ‘__builtin_strncpy’ specified bound 64 equals 
destination size [-Wstringop-truncation]
   95 | strncpy(context->format, obs_data_get_string(settings, 
"format"),
  | ^
cc: warning: 
$<$,$>:-fopenmp-simd>:
 linker input file unused because linking not done
cc: error: 
$<$,$>:-fopenmp-simd>:
 linker input file not found: No such file or directory
cc: warning: 
$<$,$>:-fopenmp-simd>:
 linker input file unused because linking not done
cc: error: 
$<$,$>:-fopenmp-simd>:
 linker input file not found: No such file or directory
ninja: build stopped: subcommand failed.
dh_auto_build: error: cd obj-aarch64-linux-gnu && LC_ALL=C.UTF-8 ninja -j4 -v 
returned exit code 1
make: *** [debian/rules:13: binary-arch] Error 25

Eriberto



-- System Information:
Debian Release: 12.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.1.0-13-amd64 (SMP w/16 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, 
TAINT_UNSIGNED_MODULE
Locale: LANG=pt_BR.UTF-8, LC_CTYPE=pt_BR.UTF-8 (charmap=UTF-8), 
LANGUAGE=pt_BR:pt:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages obs-time-source depends on:
ii  libc62.36-9+deb12u3
ii  libcairo21.16.0-7
ii  libglib2.0-0 2.74.6-2
ii  libobs0  29.0.2+dfsg-1+b1
ii  libpango-1.0-0   1.50.12+ds-1
ii  libpangocairo-1.0-0  1.50.12+ds-1
ii  obs-studio   29.0.2+dfsg-1+b1

obs-time-source recommends no packages.

obs-time-source suggests no packages.

-- no debconf information