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Bug #78268 Incompatible LDFlags with arm
Submitted: 2019-07-10 06:41 UTC Modified: 2019-07-10 15:34 UTC
From: cyril dot pascal_php at m4x dot org Assigned:
Status: Closed Package: Compile Failure
PHP Version: 7.4.0alpha2 OS: linux
Private report: No CVE-ID: None
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 [2019-07-10 06:41 UTC] cyril dot pascal_php at m4x dot org 
Description:
------------
The following commit introduced a regression in raspberry compilation host arm-linux-gnueabihf :
https://github.com/php/php-src/commit/62ded6efbcb41e24a505117f8de5b70d56a98f57

The linker flags do not seem compatible with my arch and produce a badly linked executable.



Test script:
---------------
./configure CFLAGS= CXXFLAGS= --enable-cli --disable-phpdbg --disable-all --build=arm-linux-gnueabihf --disable-cgi && make -j4
sapi/cli/php --version

Expected result:
----------------
PHP 8.0.0-dev (cli) (built: Jul  9 2019 08:04:41) ( NTS )
Copyright (c) The PHP Group
Zend Engine v4.0.0-dev, Copyright (c) Zend Technologies


Actual result:
--------------
Segmentation fault

$ ldd sapi/cli/php
        not a dynamic executable

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 [2019-07-10 11:33 UTC] cyril dot pascal_php at m4x dot org 
According to https://en.wikipedia.org/wiki/Page_(computer_memory)#Multiple_page_sizes , the value set to 2^21 (2MB) is to high for some processors but ok with x86 / x86_64 processors.
For instance, for ARMv7, 2^16 (64KB) is fine, but higher value is not
 [2019-07-10 11:57 UTC] cyril dot pascal_php at m4x dot org 
The following pull request has been associated:

Patch Name: Fix #78268 Align segments on huge page boundary only for x86
On GitHub:  https://github.com/php/php-src/pull/4387
Patch:      https://github.com/php/php-src/pull/4387.patch
 [2019-07-10 15:34 UTC] cyril dot pascal_php at m4x dot org
-Status: Open +Status: Closed
 [2019-07-10 15:34 UTC] cyril dot pascal_php at m4x dot org 
Closed as PR has been merged
 
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