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HTML
173 lines
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Compile your AIX source" />
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<meta name="abstract" content="You can install one of the AIX compiler products that support installation in i5/OS PASE to compile your programs in the i5/OS PASE environment." />
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<meta name="description" content="You can install one of the AIX compiler products that support installation in i5/OS PASE to compile your programs in the i5/OS PASE environment." />
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<meta name="DC.Relation" scheme="URI" content="../rzalc/pase.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2000, 2006" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Compile your AIX source</title>
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</head>
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<body id="rzalfcompileaix"><a name="rzalfcompileaix"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Compile your AIX source</h1>
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<div><p>You can install one of the AIX<sup>®</sup> compiler products that support installation
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in <span class="keyword">i5/OS™</span> PASE to compile
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your programs in the <span class="keyword">i5/OS</span> PASE
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environment.</p>
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<div class="section"><p>When your program uses AIX interfaces only, you compile with any
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required AIX headers
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and link with AIX libraries
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to prepare binaries for <span class="keyword">i5/OS</span> PASE.
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Keep in mind that <span class="keyword">i5/OS</span> PASE
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does not support applications that are statically bound with AIX system-supplied
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shared libraries.</p>
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<p><span class="keyword">i5/OS</span> PASE
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programs are structurally identical to AIX programs for PowerPC<sup>®</sup>.</p>
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<p><span class="keyword">i5/OS</span> PASE (option 33 of the operating
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system) does not include a compiler. You use an AIX system to compile <span class="keyword">i5/OS</span> PASE
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programs, or you can optionally install one of the AIX compiler products that support installation
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in <span class="keyword">i5/OS</span> PASE to compile
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your programs in the <span class="keyword">i5/OS</span> PASE
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environment.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Use AIX compilers on the pSeries<sup>®</sup> server</h4><p>You
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can build <span class="keyword">i5/OS</span> PASE programs
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using any AIX compiler
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and linker that generate output that is compatible with the AIX ABI for PowerPC. <span class="keyword">i5/OS</span> PASE provides instruction
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emulation support for binaries that use POWER™ architecture instructions that do
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not exist in PowerPC (except
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for IBM<sup>®</sup> POWER instructions
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for cache management).</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Use AIX compilers in <span class="keyword">i5/OS</span> PASE</h4><p><span class="keyword">i5/OS</span> PASE supports the installation
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of the following separately available AIX compilers in the <span class="keyword">i5/OS</span> PASE
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environment:</p>
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<img src="./delta.gif" alt="Start of change" /><ul><li>IBM XL
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C/C++ Enterprise Edition for AIX, V7.0 (5724-I11)</li>
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<li>IBM XL
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C Enterprise Edition for AIX, V7.0 (5724-I10)</li>
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<li>IBM XL
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Fortran Enterprise Edition for AIX, V9.1 (5724-I08)</li>
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</ul><img src="./deltaend.gif" alt="End of change" />
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<p>Using these products, you can develop, compile, build, and run your AIX applications
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entirely within the <span class="keyword">i5/OS</span> PASE
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environment on your iSeries™ server.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Development tools</h4><p>Many development
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tools that you use on AIX (for example, <tt>ld</tt>, <tt>ar</tt>, <tt>make</tt>, <tt>yacc</tt>)
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are included with <span class="keyword">i5/OS</span> PASE.
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Many AIX tools
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from other sources (for instance, the open-source tool <tt>gcc</tt>) can also
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work in <span class="keyword">i5/OS</span> PASE.</p>
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<p>The iSeries Tools
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for Developers PRPQ (5799-PTL) also contains a wide array of tools to aid
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in the development, building, and porting of iSeries applications. For more information
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about this PRPQ, see the <a href="http://www.ibm.com/servers/enable/site/porting/tools/" target="_blank">IBM Virtual Innovation Center for Hardware</a> Web
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site.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Compiler notes for handling of pointers</h4><ul><li>The <tt>xlc</tt> compiler provides limited support for
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16-byte alignment (for type long double) by using the combination of <tt>-qlngdbl128</tt> and <tt>-qalign=natural</tt>.
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Type <var class="varname">ILEpointer</var> requires these compiler options to ensure
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that machine interface (MI) pointers are 16-byte aligned within structures.
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Using option <tt>-qldbl128</tt> forces type long double to be a 128-bit type
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that requires use of libc128.a to handle operations like <tt>printf</tt> for
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long double fields. <p>An easy way to get option <tt>-qlngdbl128</tt> and
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link with libc128.a is to use the <tt>xlc128</tt> command instead of the <tt>xlc</tt> command.</p>
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</li>
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<li>The <tt>xlc/xlC</tt> compiler currently does not provide a way to force
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16-byte alignment for static or automatic variables. The compiler only guarantees
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relative alignment for 128-bit long double fields within structures. The <span class="keyword">i5/OS</span> PASE version of <tt>malloc</tt> always
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provides 16-byte aligned storage, and you can arrange 16-byte alignment of
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stack storage.</li>
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<li>Header file as400_types.h also relies on type <tt>long long</tt> to be
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a 64-bit integer. <tt>xlc</tt> compiler option <tt>-qlonglong</tt> ensures
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this geometry (which is not the default for all commands that run the <tt>xlc</tt> compiler).</li>
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</ul>
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</div>
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<div class="section"><h4 class="sectiontitle">Examples</h4><p>The following examples
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are intended for use when you are compiling your <span class="keyword">i5/OS</span> PASE
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programs on an AIX system.
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If you are using a compiler installed in <span class="keyword">i5/OS</span> PASE
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to compile your programs, you do not need to specify compiler options for
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the locations of <span class="keyword">i5/OS</span> system-unique
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header files or <span class="keyword">i5/OS</span> system-unique
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exports because these files will be found in their default path locations
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of /usr/include/ and /usr/lib/ on an <span class="keyword">i5/OS</span> system.</p>
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</div>
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<div class="example"><h4 class="sectiontitle">Example 1</h4><p>The following command on an AIX system creates
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an <span class="keyword">i5/OS</span> PASE program named <tt>testpgm</tt> that
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can use i5/OS system-unique
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interfaces exported by libc.a:</p>
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<pre>xlc -o testpgm -qldbl128 -qlonglong -qalign=natural
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-bI:/mydir/as400_libc.exp testpgm.c</pre>
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<p>This example assumes
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that the i5/OS system-unique
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header files are copied to the AIX directory /usr/include and that the i5/OS system-unique
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exports files are copied to the AIX directory /mydir.</p>
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</div>
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<div class="example"><h4 class="sectiontitle">Example 2</h4><p>The following example assumes i5/OS system-unique
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headers and export files are in /pase/lib:</p>
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<pre>xlc -o as400_test -qldbl128 -qlonglong -qalign=natural -H16
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-l c128
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-I /pase/lib
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-bI:/pase/lib/as400_libc.exp as400_test.c</pre>
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</div>
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<div class="example"><h4 class="sectiontitle">Example 3</h4><p>The following example builds the same
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program as example 2 with the same options; however, the <tt>xlc_r</tt> command
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is used for a multithreaded program to ensure that the compiled application
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links with threadsafe runtime libraries:</p>
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<pre>xlc_r -o as400_test -qldbl128 -qlonglong -qalign=natural -H16
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-l c128
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-I /pase/lib
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-bI:/pase/lib/as400_libc.exp as400_test.c</pre>
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<p>In
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the examples, if you are using <span class="keyword">i5/OS</span> PASE
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support for IBM DB2
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Universal Database™ (UDB) for iSeries call level interfaces (CLI),
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you also need to specify -bI:/pase/include/libdb400.exp on your build command.</p>
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<p>The
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-bI directive tells the compiler to pass the parameter to the <tt>ld</tt> command.
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The directive specifies an export file containing exported symbols from a
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library to be imported by the application.</p>
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</div>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzalfinstcomp.htm">Install AIX compilers on i5/OS PASE</a></strong><br />
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You can follow the steps in this topic to install AIX compilers
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on <span class="keyword">i5/OS</span> PASE.</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzalfpreparing.htm" title="The steps you need to take to prepare AIX programs that run effectively on i5/OS vary with the nature of your program and your actual needs for i5/OS system-unique interfaces and functions.">Prepare programs to run in i5/OS PASE</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzalfwhatispase.htm" title="i5/OS PASE is an integrated runtime environment for AIX applications running on i5/OS.">What is i5/OS PASE?</a></div>
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</div>
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<div class="relinfo"><strong>Related information</strong><br />
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<div><a href="../rzalc/pase.htm">i5/OS PASE shells and utilities</a></div>
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</div>
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</div>
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</body>
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</html>
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