eventfd availability not correctly determined on older linux kernels
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Key: TS-515
URL: https://issues.apache.org/jira/browse/TS-515
Project: Traffic Server
Issue Type: Bug
Components: Build
Affects Versions: 2.1.3
Environment: Debian Linux VPS, uname -a :
2.6.18-194.17.1.el5.028stab070.7 #1 SMP Fri Oct 1 14:17:14 MSD 2010 i686
GNU/Linux
Reporter: Marcus Clyne
Priority: Blocker
It appears that the macro ATS_HAS_EVENTFD is not correctly determined in some
instances.
When compiling v 2.1.3 on the above environment, I get :
...
UnixEThread.cc:33:25: error: sys/eventfd.h: No such file or directory
mv -f .deps/Thread.Tpo .deps/Thread.Po
g++ -DHAVE_CONFIG_H -I. -I../../libinktomi++ -I../../librecords
-D_LARGEFILE64_SOURCE=1 -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -D_REENTRANT
-Dlinux -I/usr/include/tcl8.4 -march=i586 -g -pipe -Wall -Werror -O3
-feliminate-unused-debug-symbols -fno-strict-aliasing -Wno-invalid-offsetof -MT
UnixEvent.o -MD -MP -MF .deps/UnixEvent.Tpo -c -o UnixEvent.o UnixEvent.cc
UnixEThread.cc: In constructor 'EThread::EThread(ThreadType, int)':
UnixEThread.cc:76: error: 'eventfd' was not declared in this scope
make[2]: *** [UnixEThread.o] Error 1
...
According to http://perkamon.alioth.debian.org/online/man2/eventfd.2.php
eventfd() is available in Linux kernels >= 2.6.22, so I am assuming in a 2.6.18
kernel, ATS_HAS_EVENTFD should not be set, but it is. I'm also assuming this
is a ./configure issue.
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