* Package:    sys-apps/usbmon-6-r1
 * Repository: gentoo
 * Maintainer: robbat2@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
>>> Unpacking usbmon-6.tar.gz to /var/tmp/portage/sys-apps/usbmon-6-r1/work
>>> Source unpacked in /var/tmp/portage/sys-apps/usbmon-6-r1/work
>>> Preparing source in /var/tmp/portage/sys-apps/usbmon-6-r1/work/usbmon-6 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/sys-apps/usbmon-6-r1/work/usbmon-6 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/sys-apps/usbmon-6-r1/work/usbmon-6 ...
make -j1 
x86_64-pc-linux-gnu-gcc -march=native -O2 -pipe -Wall -Wshadow -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wpointer-arith -Wsign-compare -Wchar-subscripts -Wstrict-prototypes -Wformat=2 -Wtype-limits -Wp,-D_FORTIFY_SOURCE=2    -c -o usbmon.o usbmon.c
<command-line>:0:0: warning: "_FORTIFY_SOURCE" redefined
<built-in>: note: this is the location of the previous definition
usbmon.c: In function ‘main’:
usbmon.c:211:3: warning: nested extern declaration of ‘usbmon_packet_size_is_bolixed’ [-Wnested-externs]
   extern void usbmon_packet_size_is_bolixed(void);
   ^
usbmon.c:215:3: warning: nested extern declaration of ‘usbmon_packet_1_size_is_bolixed’ [-Wnested-externs]
   extern void usbmon_packet_1_size_is_bolixed(void);
   ^
usbmon.c:316:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (i = 0; i < mfb.nfetch; i++) {
                  ^
usbmon.c:318:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (off >= par.map_size) {
             ^
usbmon.c: In function ‘print_1u’:
usbmon.c:525:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if (ndesc * sizeof(struct usbmon_isodesc) > data_len) {
                                              ^
usbmon.c:542:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if (ndesc * sizeof(struct usbmon_isodesc) > data_len) {
                                              ^
usbmon.c: In function ‘print_human’:
usbmon.c:672:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if (ndesc * sizeof(struct usbmon_isodesc) > data_len) {
                                              ^
usbmon.c:689:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if (ndesc * sizeof(struct usbmon_isodesc) > data_len) {
                                              ^
usbmon.c: In function ‘make_device’:
usbmon.c:966:8: warning: implicit declaration of function ‘makedev’ [-Wimplicit-function-declaration]
  dev = makedev(major, p->ifnum);
        ^
usbmon.c:966:2: warning: nested extern declaration of ‘makedev’ [-Wnested-externs]
  dev = makedev(major, p->ifnum);
  ^
x86_64-pc-linux-gnu-gcc -Wl,-O1 -Wl,--as-needed  usbmon.o   -o usbmon
usbmon.o: In function `make_device':
usbmon.c:(.text+0x1013): undefined reference to `makedev'
collect2: error: ld returned 1 exit status
<builtin>: recipe for target 'usbmon' failed
make: *** [usbmon] Error 1
 * ERROR: sys-apps/usbmon-6-r1::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=sys-apps/usbmon-6-r1::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=sys-apps/usbmon-6-r1::gentoo'`.
 * The complete build log is located at '/var/log/portage/sys-apps:usbmon-6-r1:20160417-175147.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/sys-apps/usbmon-6-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/sys-apps/usbmon-6-r1/temp/environment'.
 * Working directory: '/var/tmp/portage/sys-apps/usbmon-6-r1/work/usbmon-6'
 * S: '/var/tmp/portage/sys-apps/usbmon-6-r1/work/usbmon-6'