=> "/opt/pkg/bin/bmake" ["-C", "/data/jenkins/workspace/pkgsrc-upstream-trunk/archivers/unlzx", "all", "BATCH=1", "DEPENDS_TARGET=/nonexistent"]
WARNING: [license.mk] Every package should define a LICENSE.
===> Building for unlzx-1.1
cd /home/pbulk/work/archivers/unlzx/work && gcc  -pipe -O2 -msave-args -fno-aggressive-loop-optimizations  -o unlzx unlzx.c
unlzx.c: In function 'open_output':
unlzx.c:651:5: error: implicit declaration of function 'mkdir' [-Wimplicit-function-declaration]
  651 |     mkdir(filename, 511); /* I don't care if it works or not */
      |     ^~~~~
*** Error code 1

Stop.
bmake[1]: stopped making "all" in /data/jenkins/workspace/pkgsrc-upstream-trunk/archivers/unlzx
*** Error code 1

Stop.
bmake: stopped making "all" in /data/jenkins/workspace/pkgsrc-upstream-trunk/archivers/unlzx