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From "Hammer, Tim" <>
Subject [users@httpd] Losing expat.h in Linux cross-compilation environment
Date Tue, 02 Oct 2007 01:45:57 GMT

I am attempting to build Apache httpd 2.2.4 for our platform using our
cross-compilation environment. Initially, I was using the WindRiver
Linux 1.4 method of adding package to a layer which is then built for
each target board. I was successful for a number of iterations, until I
started getting errors compiling apr-util/xml/apr_xml.c- it could not
find expat.h. I was unable to identify any change in the environment
that might have changed a path or link or otherwise caused the issue,
nor was I able to get rid of the issue by starting with a fresh build

I switched to using our application cross-compilation environment. Again
I was successful at compiling for a number of iterations, but the error
eventually occurred. Creating a fresh build environment was also
unsuccessful, however, I was able to build for a different platform. I
expect that eventually I will see the same problem arise. Unfortunately,
I only have a limited number of platforms to which I can switch to
continue compiling ;-)!

Up to this point, I was not setting any configuration values related to
expat. By setting --with-expat=builtin I was able to compile again in
the "tainted" environments, but wonder if it will continue to work.

It seems that very little cross-compiling of httpd is done, but has
anyone else seen this behavior?

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