* Package:    sys-libs/libfaketime-0.9.6-r1
 * Repository: gentoo
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
>>> Unpacking libfaketime-0.9.6.tar.gz to /var/tmp/portage/sys-libs/libfaketime-0.9.6-r1/work
>>> Source unpacked in /var/tmp/portage/sys-libs/libfaketime-0.9.6-r1/work
>>> Preparing source in /var/tmp/portage/sys-libs/libfaketime-0.9.6-r1/work/libfaketime-0.9.6 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/sys-libs/libfaketime-0.9.6-r1/work/libfaketime-0.9.6 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/sys-libs/libfaketime-0.9.6-r1/work/libfaketime-0.9.6 ...
make -j1 CC=x86_64-pc-linux-gnu-gcc LIBDIRNAME=/lib64 PREFIX=/usr 
make  -C src all
make[1]: Entering directory '/var/tmp/portage/sys-libs/libfaketime-0.9.6-r1/work/libfaketime-0.9.6/src'
x86_64-pc-linux-gnu-gcc -o libfaketime.o -c -march=native -O2 -pipe -std=gnu99 -Wall -Wextra -Werror -DFAKE_STAT -DFAKE_SLEEP -DFAKE_TIMERS -DFAKE_INTERNAL_CALLS -fPIC -DPREFIX='"'/usr'"' -DLIBDIRNAME='"'/lib64'"'  libfaketime.c
libfaketime.c: In function ‘__xstat’:
libfaketime.c:513:7: error: nonnull argument ‘buf’ compared to NULL [-Werror=nonnull-compare]
    if (buf != NULL)
       ^
libfaketime.c: In function ‘__fxstat’:
libfaketime.c:542:6: error: nonnull argument ‘buf’ compared to NULL [-Werror=nonnull-compare]
   if (buf != NULL)
      ^
libfaketime.c: In function ‘__fxstatat’:
libfaketime.c:571:6: error: nonnull argument ‘buf’ compared to NULL [-Werror=nonnull-compare]
   if (buf != NULL)
      ^
libfaketime.c: In function ‘__lxstat’:
libfaketime.c:600:6: error: nonnull argument ‘buf’ compared to NULL [-Werror=nonnull-compare]
   if (buf != NULL)
      ^
libfaketime.c: In function ‘__xstat64’:
libfaketime.c:628:6: error: nonnull argument ‘buf’ compared to NULL [-Werror=nonnull-compare]
   if (buf != NULL)
      ^
libfaketime.c: In function ‘__fxstat64’:
libfaketime.c:656:6: error: nonnull argument ‘buf’ compared to NULL [-Werror=nonnull-compare]
   if (buf != NULL)
      ^
libfaketime.c: In function ‘__fxstatat64’:
libfaketime.c:685:6: error: nonnull argument ‘buf’ compared to NULL [-Werror=nonnull-compare]
   if (buf != NULL)
      ^
libfaketime.c: In function ‘__lxstat64’:
libfaketime.c:714:6: error: nonnull argument ‘buf’ compared to NULL [-Werror=nonnull-compare]
   if (buf != NULL)
      ^
cc1: all warnings being treated as errors
Makefile:88: recipe for target 'libfaketime.o' failed
make[1]: *** [libfaketime.o] Error 1
make[1]: Leaving directory '/var/tmp/portage/sys-libs/libfaketime-0.9.6-r1/work/libfaketime-0.9.6/src'
Makefile:7: recipe for target 'all' failed
make: *** [all] Error 2
 * ERROR: sys-libs/libfaketime-0.9.6-r1::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=sys-libs/libfaketime-0.9.6-r1::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=sys-libs/libfaketime-0.9.6-r1::gentoo'`.
 * The complete build log is located at '/var/log/portage/sys-libs:libfaketime-0.9.6-r1:20160914-074843.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/sys-libs/libfaketime-0.9.6-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/sys-libs/libfaketime-0.9.6-r1/temp/environment'.
 * Working directory: '/var/tmp/portage/sys-libs/libfaketime-0.9.6-r1/work/libfaketime-0.9.6'
 * S: '/var/tmp/portage/sys-libs/libfaketime-0.9.6-r1/work/libfaketime-0.9.6'