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<title>Distribution/Simple/Program/Ld.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-2"></a><span class='hs-comment'>-- |</span>
<a name="line-3"></a><span class='hs-comment'>-- Module : Distribution.Simple.Program.Ld</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : Duncan Coutts 2009</span>
<a name="line-5"></a><span class='hs-comment'>--</span>
<a name="line-6"></a><span class='hs-comment'>-- Maintainer : cabal-devel@haskell.org</span>
<a name="line-7"></a><span class='hs-comment'>-- Portability : portable</span>
<a name="line-8"></a><span class='hs-comment'>--</span>
<a name="line-9"></a><span class='hs-comment'>-- This module provides an library interface to the @ld@ linker program.</span>
<a name="line-10"></a>
<a name="line-11"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Distribution</span><span class='hs-varop'>.</span><span class='hs-conid'>Simple</span><span class='hs-varop'>.</span><span class='hs-conid'>Program</span><span class='hs-varop'>.</span><span class='hs-conid'>Ld</span> <span class='hs-layout'>(</span>
<a name="line-12"></a> <span class='hs-varid'>combineObjectFiles</span><span class='hs-layout'>,</span>
<a name="line-13"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-14"></a>
<a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Distribution</span><span class='hs-varop'>.</span><span class='hs-conid'>Simple</span><span class='hs-varop'>.</span><span class='hs-conid'>Program</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-16"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>ConfiguredProgram</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-17"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Distribution</span><span class='hs-varop'>.</span><span class='hs-conid'>Simple</span><span class='hs-varop'>.</span><span class='hs-conid'>Program</span><span class='hs-varop'>.</span><span class='hs-conid'>Run</span>
<a name="line-18"></a> <span class='hs-layout'>(</span> <span class='hs-varid'>programInvocation</span><span class='hs-layout'>,</span> <span class='hs-varid'>multiStageProgramInvocation</span>
<a name="line-19"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>runProgramInvocation</span> <span class='hs-layout'>)</span>
<a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Distribution</span><span class='hs-varop'>.</span><span class='hs-conid'>Verbosity</span>
<a name="line-21"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>Verbosity</span> <span class='hs-layout'>)</span>
<a name="line-22"></a>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Directory</span>
<a name="line-24"></a> <span class='hs-layout'>(</span> <span class='hs-varid'>renameFile</span> <span class='hs-layout'>)</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>FilePath</span>
<a name="line-26"></a> <span class='hs-layout'>(</span> <span class='hs-layout'>(</span><span class='hs-varop'><.></span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-27"></a>
<a name="line-28"></a><a name="combineObjectFiles"></a><span class='hs-comment'>-- | Call @ld -r@ to link a bunch of object files together.</span>
<a name="line-29"></a><span class='hs-comment'>--</span>
<a name="line-30"></a><span class='hs-definition'>combineObjectFiles</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Verbosity</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConfiguredProgram</span>
<a name="line-31"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>FilePath</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-32"></a><span class='hs-definition'>combineObjectFiles</span> <span class='hs-varid'>verbosity</span> <span class='hs-varid'>ld</span> <span class='hs-varid'>target</span> <span class='hs-varid'>files</span> <span class='hs-keyglyph'>=</span>
<a name="line-33"></a>
<a name="line-34"></a> <span class='hs-comment'>-- Unlike "ar", the "ld" tool is not designed to be used with xargs. That is,</span>
<a name="line-35"></a> <span class='hs-comment'>-- if we have more object files than fit on a single command line then we</span>
<a name="line-36"></a> <span class='hs-comment'>-- have a slight problem. What we have to do is link files in batches into</span>
<a name="line-37"></a> <span class='hs-comment'>-- a temp object file and then include that one in the next batch.</span>
<a name="line-38"></a>
<a name="line-39"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>simpleArgs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"-r"</span><span class='hs-layout'>,</span> <span class='hs-str'>"-o"</span><span class='hs-layout'>,</span> <span class='hs-varid'>target</span><span class='hs-keyglyph'>]</span>
<a name="line-40"></a>
<a name="line-41"></a> <span class='hs-varid'>initialArgs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"-r"</span><span class='hs-layout'>,</span> <span class='hs-str'>"-o"</span><span class='hs-layout'>,</span> <span class='hs-varid'>target</span><span class='hs-keyglyph'>]</span>
<a name="line-42"></a> <span class='hs-varid'>middleArgs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"-r"</span><span class='hs-layout'>,</span> <span class='hs-str'>"-o"</span><span class='hs-layout'>,</span> <span class='hs-varid'>target</span><span class='hs-layout'>,</span> <span class='hs-varid'>tmpfile</span><span class='hs-keyglyph'>]</span>
<a name="line-43"></a> <span class='hs-varid'>finalArgs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>middleArgs</span>
<a name="line-44"></a>
<a name="line-45"></a> <span class='hs-varid'>simple</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>programInvocation</span> <span class='hs-varid'>ld</span> <span class='hs-varid'>simpleArgs</span>
<a name="line-46"></a> <span class='hs-varid'>initial</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>programInvocation</span> <span class='hs-varid'>ld</span> <span class='hs-varid'>initialArgs</span>
<a name="line-47"></a> <span class='hs-varid'>middle</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>programInvocation</span> <span class='hs-varid'>ld</span> <span class='hs-varid'>middleArgs</span>
<a name="line-48"></a> <span class='hs-varid'>final</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>programInvocation</span> <span class='hs-varid'>ld</span> <span class='hs-varid'>finalArgs</span>
<a name="line-49"></a>
<a name="line-50"></a> <span class='hs-varid'>invocations</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>multiStageProgramInvocation</span>
<a name="line-51"></a> <span class='hs-varid'>simple</span> <span class='hs-layout'>(</span><span class='hs-varid'>initial</span><span class='hs-layout'>,</span> <span class='hs-varid'>middle</span><span class='hs-layout'>,</span> <span class='hs-varid'>final</span><span class='hs-layout'>)</span> <span class='hs-varid'>files</span>
<a name="line-52"></a>
<a name="line-53"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>run</span> <span class='hs-varid'>invocations</span>
<a name="line-54"></a>
<a name="line-55"></a> <span class='hs-keyword'>where</span>
<a name="line-56"></a> <span class='hs-varid'>tmpfile</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>target</span> <span class='hs-varop'><.></span> <span class='hs-str'>"tmp"</span> <span class='hs-comment'>-- perhaps should use a proper temp file</span>
<a name="line-57"></a>
<a name="line-58"></a> <span class='hs-varid'>run</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-59"></a> <span class='hs-varid'>run</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>inv</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runProgramInvocation</span> <span class='hs-varid'>verbosity</span> <span class='hs-varid'>inv</span>
<a name="line-60"></a> <span class='hs-varid'>run</span> <span class='hs-layout'>(</span><span class='hs-varid'>inv</span><span class='hs-conop'>:</span><span class='hs-varid'>invs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>runProgramInvocation</span> <span class='hs-varid'>verbosity</span> <span class='hs-varid'>inv</span>
<a name="line-61"></a> <span class='hs-varid'>renameFile</span> <span class='hs-varid'>target</span> <span class='hs-varid'>tmpfile</span>
<a name="line-62"></a> <span class='hs-varid'>run</span> <span class='hs-varid'>invs</span>
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