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Thread-Topic: building binaries with static objects
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Date: Mon, 16 Nov 2015 13:45:03 +0000
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Subject: building binaries with static objects
From: bogdan.andone@intel.com ("Andone, Bogdan")

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Hi guys,

Does anybody know why PHP sources are compiled as shared objects only on li=
nux, meaning that libtool is adding -fPIC -DPIC flags during compilation?
Shared objects are mandatory for building libphp7 library and module extens=
ions, but why are they used for building binaries like php-fpm, php-cgi or =
php?

I just observed that binaries built with static objects are ~1% quicker at =
runtime for real live workloads like WordPress. Despite the fact that binar=
y size is higher than the current version, there is a visible gain in terms=
 of reduction of instructions retired per request and iTLB loads and misses=
.

I am wondering if it is possible to have static compilation enabled by defa=
ult in the Makefile. I managed to do it by brute force as I am not an exper=
t in libtool and auto tools (I tried to play with -enable-static flag but w=
ith no luck...). Not sure if current behavior is by intent or just a miss; =
or what constraints have to be considered for portability reasons for other=
 non linux platforms.

Kind Regards,
Bogdan Andone

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