Description:
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Using latest ubuntu 14.04 LTS and php versions, trying to run "pecl install kadm5" results in an error, 

"13 source files, building
running: phpize
Cannot find config.m4.
Make sure that you run '/usr/bin/phpize' in the top level source directory of the module"

it seems config.m4 is missing in the kadm5 package for pecl, though when downloading the package manually it exists (but I'm unable to install the tar file, which pecl seems built to handle)

Test script:
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on ubuntu 14.04 after install php-pear and other prereqs:

pecl install kadm5 channel://pecl.php.net/kadm5-0.2.3

Expected result:
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kadm5 should be installed

Actual result:
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pecl fails