* Package:    sys-fs/vzquota-3.1
 * Repository: gentoo
 * USE:        abi_x86_64 amd64 elibc_musl kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
>>> Unpacking vzquota-3.1.tar.bz2 to /var/tmp/portage/sys-fs/vzquota-3.1/work
>>> Source unpacked in /var/tmp/portage/sys-fs/vzquota-3.1/work
>>> Preparing source in /var/tmp/portage/sys-fs/vzquota-3.1/work/vzquota-3.1 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/sys-fs/vzquota-3.1/work/vzquota-3.1 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/sys-fs/vzquota-3.1/work/vzquota-3.1 ...
make -j1 
make[1]: Entering directory '/var/tmp/portage/sys-fs/vzquota-3.1/work/vzquota-3.1/src'
x86_64-gentoo-linux-musl-gcc -c -O2 -pipe -march=native -fno-common -falign-functions=32:25:16 -pipe -I../include -std=gnu99 -g -Wall -Wformat -D_FILE_OFFSET_BITS=64 -D_LINUX_QUOTA_VERSION=6 -D_LARGEFILE64_SOURCE -DVARDIR=\"/var\"  common.c -o common.o
In file included from ../include/linux/vzquota.h:23,
                 from ../include/vzquota.h:32,
                 from common.c:26:
../include/linux/quota.h:329:23: fatal error: sys/cdefs.h: No such file or directory
  329 | # /* nodep */ include <sys/cdefs.h>
      |                       ^~~~~~~~~~~~~
compilation terminated.
make[1]: *** [Makefile:52: common.o] Error 1
make[1]: Leaving directory '/var/tmp/portage/sys-fs/vzquota-3.1/work/vzquota-3.1/src'
make: *** [Makefile:27: all] Error 2
 * ERROR: sys-fs/vzquota-3.1::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=sys-fs/vzquota-3.1::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=sys-fs/vzquota-3.1::gentoo'`.
 * The complete build log is located at '/var/log/portage/sys-fs:vzquota-3.1:20200322-120143.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/sys-fs/vzquota-3.1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/sys-fs/vzquota-3.1/temp/environment'.
 * Working directory: '/var/tmp/portage/sys-fs/vzquota-3.1/work/vzquota-3.1'
 * S: '/var/tmp/portage/sys-fs/vzquota-3.1/work/vzquota-3.1'