$ emerge-tegra2_kaen apitrace
Calculating dependencies... done!

>>> Emerging (1 of 1) dev-util/apitrace-3.0-r1 from chromiumos for /build/tegra2_kaen/
 * Running stacked hooks for pre_pkg_setup
 *    sysroot_build_bin_dir ...                                                                                                                         [ ok ]
 * Running stacked hooks for pre_src_unpack
 *    python_multilib_setup ...                                                                                                                         [ ok ]
>>> Unpacking source...
>>> Unpacking apitrace-3.0.tar.gz to /build/tegra2_kaen/tmp/portage/dev-util/apitrace-3.0-r1/work
>>> Source unpacked in /build/tegra2_kaen/tmp/portage/dev-util/apitrace-3.0-r1/work
>>> Preparing source in /build/tegra2_kaen/tmp/portage/dev-util/apitrace-3.0-r1/work/apitrace-3.0 ...
 * Applying apitrace-3.0-system-libs.patch ...                                                                                                          [ ok ]
 * Applying apitrace-3.0-glxtrace-only.patch ...                                                                                                        [ ok ]
>>> Source prepared.
>>> Configuring source in /build/tegra2_kaen/tmp/portage/dev-util/apitrace-3.0-r1/work/apitrace-3.0 ...
>>> Working in BUILD_DIR: "/build/tegra2_kaen/tmp/portage/dev-util/apitrace-3.0-r1/work/apitrace-3.0_build-default"
cmake --no-warn-unused-cli -C /build/tegra2_kaen/tmp/portage/dev-util/apitrace-3.0-r1/temp/gentoo_common_config.cmake -DCMAKE_INSTALL_PREFIX=/usr -DENABLE_GUI=OFF -DENABLE_EGL=OFF -DCMAKE_FIND_ROOT_PATH=/build/tegra2_kaen/ -DCMAKE_FIND_ROOT_PATH_MODE_PROGRAM=NEVER -DCMAKE_FIND_ROOT_PATH_MODE_LIBRARY=ONLY -DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE=ONLY -DCMAKE_BUILD_TYPE=Gentoo -DCMAKE_INSTALL_DO_STRIP=OFF -DCMAKE_USER_MAKE_RULES_OVERRIDE=/build/tegra2_kaen/tmp/portage/dev-util/apitrace-3.0-r1/temp/gentoo_rules.cmake  /build/tegra2_kaen/tmp/portage/dev-util/apitrace-3.0-r1/work/apitrace-3.0
Not searching for unused variables given on the command line.
loading initial cache file /build/tegra2_kaen/tmp/portage/dev-util/apitrace-3.0-r1/temp/gentoo_common_config.cmake
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
-- Check for working C compiler: /usr/bin/armv7a-cros-linux-gnueabi-gcc
-- Check for working C compiler: /usr/bin/armv7a-cros-linux-gnueabi-gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/armv7a-cros-linux-gnueabi-g++
-- Check for working CXX compiler: /usr/bin/armv7a-cros-linux-gnueabi-g++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Found PythonInterp: /usr/bin/python (found version "2.6.4")
-- Looking for XOpenDisplay in /build/tegra2_kaen/usr/lib/libX11.so;/build/tegra2_kaen/usr/lib/libXext.so
-- Looking for XOpenDisplay in /build/tegra2_kaen/usr/lib/libX11.so;/build/tegra2_kaen/usr/lib/libXext.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Looking for IceConnectionNumber in ICE
-- Looking for IceConnectionNumber in ICE - found
-- Found X11: /build/tegra2_kaen/usr/lib/libX11.so
-- Found OpenGL: /build/tegra2_kaen/usr/lib/libGL.so
-- Performing Test CXX_COMPILER_FLAG_VISIBILITY
-- Performing Test CXX_COMPILER_FLAG_VISIBILITY - Success
-- Found ZLIB: /build/tegra2_kaen/usr/lib/libz.so (found version "1.2.5")
-- Found SNAPPY: /build/tegra2_kaen/usr/lib/libsnappy.so
-- Found PNG: /build/tegra2_kaen/usr/lib/libpng.so
-- <<< Gentoo configuration >>>
Build type      Gentoo
Install path    /usr
Compiler flags:
C               -O2 -pipe -g -march=armv7-a -mtune=cortex-a8 -mfpu=vfpv3-d16 -mfloat-abi=softfp
C++             -O2 -pipe -g -march=armv7-a -mtune=cortex-a8 -mfpu=vfpv3-d16 -mfloat-abi=softfp
Linker flags:
Executable       -Wl,-O2 -Wl,--as-needed
Module           -Wl,-O2 -Wl,--as-needed
Shared           -Wl,-O2 -Wl,--as-needed

-- Configuring done
-- Generating done
-- Build files have been written to: /build/tegra2_kaen/tmp/portage/dev-util/apitrace-3.0-r1/work/apitrace-3.0_build-default
>>> Source configured.