By not providing "FindGnuradio.cmake

[stackprogramer]

hi,when i installed gnuradio 3.7.8 on ubuntu, i want to build it returns:
which gnuradio i should install or how can fix this errors.........
thanks

-- Build type not specified: defaulting to release.
-- Boost version: 1.58.0
-- Found the following Boost libraries:
-- filesystem
-- system
CMake Error at CMakeLists.txt:88 (find_package):
By not providing "FindGnuradio.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Gnuradio",
but CMake did not find one.

Could not find a package configuration file provided by "Gnuradio"
(requested version 3.7.2.1) with any of the following names:

GnuradioConfig.cmake
gnuradio-config.cmake

Add the installation prefix of "Gnuradio" to CMAKE_PREFIX_PATH or set
"Gnuradio_DIR" to a directory containing one of the above files. If
"Gnuradio" provides a separate development package or SDK, be sure it has
been installed.

-- Configuring incomplete, errors occurred!

See also "/home/sp/Documents/gr-dvbt/build/CMakeFiles/CMakeOutput.log".

[stackprogramer]

i finally concluded i should build gnuradio from source i shouldn't use apt-get install gnuradio