Bug#1143326: jack-stdio: FTBFS: collect2: error: ld returned 1 exit status

Package: src:jack-stdio
Version: 1.6-1
Severity: serious
Tags: ftbfs forky sid

Dear maintainer:

During a rebuild of all packages in unstable, this package failed to build.

Below you will find the last part of the build log (probably the most
relevant part, but not necessarily). If required, the full build log
is available here:

https://people.debian.org/~sanvila/build-logs/202608/

About the archive rebuild: The build was made on virtual machines from AWS,
using sbuild and a reduced chroot with only build-essential packages.

If you cannot reproduce the bug please contact me privately, as I
am willing to provide ssh access to a virtual machine where the bug is
fully reproducible.

If this is really a bug in one of the build-depends, please use
reassign and add an affects on src:jack-stdio, so that this is still
visible in the BTS web page for this package.

Thanks.

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[...]
 debian/rules clean
dh clean -Smakefile
   dh_auto_clean -O-Smakefile
	make -j2 clean
make[1]: Entering directory '/<<PKGBUILDDIR>>'
/bin/rm -f jack-stdout jack-stdin
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
   dh_clean -O-Smakefile
 debian/rules binary
dh binary -Smakefile
   dh_update_autotools_config -O-Smakefile
   dh_autoreconf -O-Smakefile
   dh_auto_configure -O-Smakefile
   dh_auto_build -O-Smakefile
	make -j2 INSTALL="install --strip-program=true"
make[1]: Entering directory '/<<PKGBUILDDIR>>'
cc -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wall `pkg-config --cflags jack` -Wdate-time -D_FORTIFY_SOURCE=2 -Wl,-z,relro -Wl,-z,now  jack-stdout.c  `pkg-config --libs jack` -lpthread -lm -o jack-stdout
cc -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wall `pkg-config --cflags jack` -Wdate-time -D_FORTIFY_SOURCE=2 -Wl,-z,relro -Wl,-z,now  jack-stdin.c  `pkg-config --libs jack` -lpthread -lm -o jack-stdin
/bin/sh: 1: /bin/sh: 1: pkg-config: not found
pkg-config: not found
/bin/sh: 1: /bin/sh: 1: pkg-config: not found
pkg-config: not found
In function ‘process’,
    inlined from ‘process’ at jack-stdin.c:157:5:
jack-stdin.c:234:49: warning: array subscript 3 is above array bounds of ‘const int32_t[3]’ {aka ‘const int[3]’} [-Warray-bounds=]
  234 |                                         d|= mask[SAMPLESIZE-1];
      |                                             ~~~~^~~~~~~~~~~~~~
jack-stdin.c: In function ‘process’:
jack-stdin.c:233:55: note: while referencing ‘mask’
  233 |                                         const int32_t mask[3] = { 0xffffff00, 0xffff0000, 0xff000000 };
      |                                                       ^~~~
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccqE0Opx.o: in function `io_thread':
././jack-stdout.c:114:(.text+0x99): undefined reference to `jack_ringbuffer_read_space'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:132:(.text+0xca): undefined reference to `jack_ringbuffer_read'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccqE0Opx.o: in function `process':
././jack-stdout.c:199:(.text+0x2fe): undefined reference to `jack_port_get_buffer'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:204:(.text+0x328): undefined reference to `jack_ringbuffer_write_space'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:225:(.text+0x39e): undefined reference to `jack_ringbuffer_write'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:237:(.text+0x46f): undefined reference to `jack_ringbuffer_write'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccqE0Opx.o: in function `setup_ports':
././jack-stdout.c:262:(.text+0x941): undefined reference to `jack_ringbuffer_create'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:277:(.text+0x9d2): undefined reference to `jack_port_register'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:285:(.text+0xa0d): undefined reference to `jack_port_name'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:285:(.text+0xa1f): undefined reference to `jack_connect'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:286:(.text+0xa3c): undefined reference to `jack_port_name'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:279:(.text+0xacd): undefined reference to `jack_client_close'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccqE0Opx.o: in function `main':
././jack-stdout.c:429:(.text.startup+0x2ca): undefined reference to `jack_client_open'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:443:(.text.startup+0x30b): undefined reference to `jack_get_buffer_size'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:449:(.text.startup+0x327): undefined reference to `jack_set_process_callback'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:450:(.text.startup+0x33b): undefined reference to `jack_on_shutdown'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:452:(.text.startup+0x343): undefined reference to `jack_activate'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:487:(.text.startup+0x3ce): undefined reference to `jack_client_close'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:488:(.text.startup+0x3da): undefined reference to `jack_ringbuffer_free'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:465:(.text.startup+0x462): undefined reference to `jack_get_sample_rate'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:439:(.text.startup+0x526): undefined reference to `jack_get_sample_rate'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdout.c:445:(.text.startup+0x607): undefined reference to `jack_client_close'
collect2: error: ld returned 1 exit status
make[1]: *** [<builtin>: jack-stdout] Error 1
make[1]: *** Waiting for unfinished jobs....
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccWn4XS9.o: in function `io_thread':
././jack-stdin.c:112:(.text+0x81): undefined reference to `jack_ringbuffer_write_space'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:135:(.text+0xd2): undefined reference to `jack_ringbuffer_write'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:146:(.text+0x126): undefined reference to `jack_ringbuffer_read_space'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:147:(.text+0x133): undefined reference to `jack_get_buffer_size'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccWn4XS9.o: in function `process':
././jack-stdin.c:165:(.text+0x3a1): undefined reference to `jack_ringbuffer_read_space'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:175:(.text+0x42d): undefined reference to `jack_port_get_buffer'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:201:(.text+0x4b2): undefined reference to `jack_ringbuffer_read'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:217:(.text+0x51a): undefined reference to `jack_ringbuffer_read'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccWn4XS9.o: in function `setup_ports':
././jack-stdin.c:263:(.text+0xae1): undefined reference to `jack_ringbuffer_create'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:278:(.text+0xb72): undefined reference to `jack_port_register'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:286:(.text+0xbb2): undefined reference to `jack_port_name'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:286:(.text+0xbc2): undefined reference to `jack_connect'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:287:(.text+0xbdf): undefined reference to `jack_port_name'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:280:(.text+0xc6d): undefined reference to `jack_client_close'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccWn4XS9.o: in function `main':
././jack-stdin.c:457:(.text.startup+0x397): undefined reference to `jack_client_open'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:471:(.text.startup+0x3d8): undefined reference to `jack_get_buffer_size'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:479:(.text.startup+0x421): undefined reference to `jack_get_buffer_size'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:486:(.text.startup+0x44c): undefined reference to `jack_set_process_callback'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:487:(.text.startup+0x460): undefined reference to `jack_on_shutdown'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:489:(.text.startup+0x468): undefined reference to `jack_activate'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:532:(.text.startup+0x51a): undefined reference to `jack_client_close'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:533:(.text.startup+0x526): undefined reference to `jack_ringbuffer_free'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:467:(.text.startup+0x5b7): undefined reference to `jack_get_sample_rate'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:503:(.text.startup+0x5f1): undefined reference to `jack_get_sample_rate'
/usr/bin/x86_64-linux-gnu-ld.bfd: ././jack-stdin.c:482:(.text.startup+0x75e): undefined reference to `jack_client_close'
collect2: error: ld returned 1 exit status
make[1]: *** [<builtin>: jack-stdin] Error 1
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
dh_auto_build: error: make -j2 INSTALL="install --strip-program=true" returned exit code 2
make: *** [debian/rules:7: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2
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