Commit 21091879 authored by Jeff Trawick's avatar Jeff Trawick
Browse files

document a problem with AIX native compiler and Apache 2+, 

and describe how to avoid it

PR:   30487


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/APACHE_2_0_BRANCH@105039 13f79535-47bb-0310-9956-ffa450edef68
parent 4381b666

README.platforms

+12 −0
Changes for README.platforms: 12 added lines, 0 removed lines.
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@@ -77,4 +77,16 @@ 
       - OR -

     gcc -c -fPIC cpprt0_stub.s



================

  AIX, using the vendor C compiler with optimization:

    There is an issue with compiling server/core.c with optimization enabled

    which has been seen with C for AIX 5.0.2.3 and above.  (5.0.2.0, 5.0.2.1,

    and 5.0.2.2 have an additional problem with Apache 2.0.x, so either upgrade 

    the compiler or don't use optimization in order to avoid it.)



    cc_r works fine with -O2 but xlc_r does not.  In order to use xlc_r with

    -O2, apply the patch at 



    http://www.apache.org/dist/httpd/patches/apply_to_2.0.49/aix_xlc_optimization.patch



    (That patch works with many recent levels of Apache 2+.)