Description:
Cmake checks for the same file, sys/devpoll.h, twice during its checks.
c:\mysql\mysql-5.6.12\bld>cmake ..
-- Building for: Visual Studio 10
-- Running cmake version 2.8.11.1
-- The C compiler identification is MSVC 16.0.30319.1
-- The CXX compiler identification is MSVC 16.0.30319.1
-- Check for working C compiler using: Visual Studio 10
-- Check for working C compiler using: Visual Studio 10 -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler using: Visual Studio 10
-- Check for working CXX compiler using: Visual Studio 10 -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check size of void *
-- Check size of void * - done
-- MySQL 5.6.12
-- Packaging as: mysql-5.6.12-win32
-- Looking for include file sasl/sasl.h
-- Looking for include file sasl/sasl.h - found
-- Looking for include file sys/devpoll.h
-- Looking for include file sys/devpoll.h - found
-- Looking for include file signal.h
-- Looking for include file signal.h - found
-- Looking for include file sys/devpoll.h
-- Looking for include file sys/devpoll.h - found
...
In the configure.cmake file, we see:
# For libevent
CHECK_INCLUDE_FILES(sys/devpoll.h HAVE_DEVPOLL)
CHECK_INCLUDE_FILES(signal.h HAVE_SIGNAL_H)
CHECK_INCLUDE_FILES(sys/devpoll.h HAVE_SYS_DEVPOLL_H)
So, it does check for the same file twice, but one is for the check HAVE_DEVPOLL and the other for HAVE_SYS_DEVPOLL_H.
But since they are the same file, are both of these necessary?
How to repeat:
Run "cmake ." (or "cmake ..") in a clean build environment.
Suggested fix:
Remove one of the checks, if they are both not necessary.
