Re: httpd crashes with segmentation fault: Incompatible libpng version in application and library

[Lenin <lenin.lee@xxxxxxxxx>]

Hi,

Thank both of you for reply.

I finally discovered that this problem occurs at the stage of linking. The  gd library has hard-coded that only libpng 1.2.x series can be recognized. Since its configure script cannot find libpng12-config from my libpng 1.5.x install path, it uses the one under /usr/bin instead.

Regards.

Martin Hasicek <martin.hasicek@xxxxxxxxx> 於 2012年3月19日下午9:02 寫道：

Hi,

you can check if you use prelink feature. In such case, LD_LIBRARY_PATH is overwriten by LD_PRELOAD or prelink.

mh

On Mon, Mar 19, 2012 at 1:55 PM, Lenin <lenin.lee@xxxxxxxxx> wrote:

I tried the directive LoadFile, but with no luck.

Igor Cicimov <icicimov@xxxxxxxxx> 於 2012年3月19日上午9:35 寫道：

LoadFile

On Mon, Mar 19, 2012 at 12:27 PM, Lenin <lenin.lee@xxxxxxxxx> wrote:

Thanks for your reply.

I've tried he first method before, no luck.

For the second one, I cannot find any useful information about the 'FileLoad' directive, neither from Google nor the official documentation.

Are you sure you didn't misspell the directive ?

2012/3/19 Igor Cicimov <icicimov@xxxxxxxxx>

Two things that come to my mind atm:

1. Link the existing “libpng.so” installed to the one you compiled

or

2. Try using FileLoad directive in the httpd.conf to load the correct "libpng.so" file

Igor

On Sun, Mar 18, 2012 at 10:24 PM, Lenin <lenin.lee@xxxxxxxxx> wrote:

Hi,

I've compiled httpd 2.2.21 and php 5.3.10, the version of libpng I used is 1.5.7, and I installed all the three packages under a custom path under /opt.

The OS is CentOS 6.2, which contains an official distribution of libpng, the version is 1.2.46.

When I start the server and visit programs hosted on it, the error.log keeps being appended with the following messages:

libpng warning: Application was compiled with png.h from libpng-1.5.7
libpng warning: Application  is  running with png.c from libpng-1.2.46
gd-png:  fatal libpng error: Incompatible libpng version in application and library

I know the reason is that the version running with is not the one compiled with. But setting the environment variable LD_LIBRARY_PATH won't solve the problem.

Can anybody tell me how to fix this ? I know removing the old version of libpng or recompile the server using the old version may be ok, but there are some other potential problems, so I just want to run my application server with the new version of libpng compiled by my self.

Thanks

--
初从文，三年不第。遂习武，校场发一矢，中鼓吏，逐之出。后学医，有所成，自撰一良方，服之，卒。

--
初从文，三年不第。遂习武，校场发一矢，中鼓吏，逐之出。后学医，有所成，自撰一良方，服之，卒。

-- 
初从文，三年不第。遂习武，校场发一矢，中鼓吏，逐之出。后学医，有所成，自撰一良方，服之，卒。