Build failure: pkgsCross.mingwW64.libev

[hellodword]

Nixpkgs version

• Unstable (25.11)

Steps to reproduce

nix build .#pkgsCross.mingwW64.libev

Can Hydra reproduce this build failure?

Hydra doesn’t try to build the package.

Link to Hydra build job

No response

Relevant log output

error: Cannot build '/nix/store/0nljzjppdfnp5ygmhky19p926nvj7dwz-libev-x86_64-w64-mingw32-4.33.drv'.
       Reason: builder failed with exit code 2.
       Output paths:
         /nix/store/w9vv64k4s310qk4brcl14m1bibsdbd8z-libev-x86_64-w64-mingw32-4.33
       Last 25 log lines:
       > checking for nanosleep... no
       > checking for __kernel_rwf_t... no
       > checking for library containing floor... none required
       > checking that generated files are newer than configure... done
       > configure: creating ./config.status
       > config.status: creating Makefile
       > config.status: creating config.h
       > config.status: executing depfiles commands
       > config.status: executing libtool commands
       > Running phase: buildPhase
       > build flags: SHELL=/nix/store/cl2gkgnh26mmpka81pc2g5bzjfrili92-bash-5.3p3/bin/bash
       > make  all-am
       > make[1]: Entering directory '/build/libev-4.33'
       > /nix/store/cl2gkgnh26mmpka81pc2g5bzjfrili92-bash-5.3p3/bin/bash ./libtool  --tag=CC   --mode=compile x86_64-w64-mingw32-gcc -DHAVE_CONFIG_H -I.     -g -O3 -c -o ev.lo ev.c
       > libtool: compile:  x86_64-w64-mingw32-gcc -DHAVE_CONFIG_H -I. -g -O3 -c ev.c  -DDLL_EXPORT -DPIC -o .libs/ev.o
       > ev.c:2143:31: warning: 'ev_default_loop_ptr' initialized and declared 'extern'
       >  2143 |   EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
       >       |                               ^~~~~~~~~~~~~~~~~~~
       > /nix/store/cl2gkgnh26mmpka81pc2g5bzjfrili92-bash-5.3p3/bin/bash ./libtool  --tag=CC   --mode=compile x86_64-w64-mingw32-gcc -DHAVE_CONFIG_H -I.     -g -O3 -c -o event.lo event.c
       > libtool: compile:  x86_64-w64-mingw32-gcc -DHAVE_CONFIG_H -I. -g -O3 -c event.c  -DDLL_EXPORT -DPIC -o .libs/event.o
       > /nix/store/cl2gkgnh26mmpka81pc2g5bzjfrili92-bash-5.3p3/bin/bash ./libtool  --tag=CC   --mode=link x86_64-w64-mingw32-gcc  -g -O3 -version-info 4:0:0  -o libev.la -rpath /nix/store/w9vv64k4s310qk4brcl14m1bibsdbd8z-libev-x86_64-w64-mingw32-4.33/lib ev.lo event.lo
       > libtool:   error: can't build x86_64-w64-mingw32 shared library unless -no-undefined is specified
       > make[1]: *** [Makefile:454: libev.la] Error 1
       > make[1]: Leaving directory '/build/libev-4.33'
       > make: *** [Makefile:365: all] Error 2
       For full logs, run:
         nix log /nix/store/0nljzjppdfnp5ygmhky19p926nvj7dwz-libev-x86_64-w64-mingw32-4.33.dr

Additional context

No response

System metadata

• system: "x86_64-linux"
• host os: Linux 6.12.52, NixOS, 25.11 (Xantusia), 25.11.20251012.cf3f5c4
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.31.2
• nixpkgs: /nix/store/la80d03vcf555bkcjp84cij5c4i63m5n-source

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