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<pre><a name="line-1"></a><span class='hs-comment'>{-# OPTIONS -fno-cse #-}</span>
<a name="line-2"></a><span class='hs-comment'>-- -fno-cse is needed for GLOBAL_VAR's to behave properly</span>
<a name="line-3"></a>
<a name="line-4"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-5"></a><span class='hs-comment'>--</span>
<a name="line-6"></a><span class='hs-comment'>-- Makefile Dependency Generation</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- (c) The University of Glasgow 2005</span>
<a name="line-9"></a><span class='hs-comment'>--</span>
<a name="line-10"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-11"></a>
<a name="line-12"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>DriverMkDepend</span> <span class='hs-layout'>(</span>
<a name="line-13"></a> <span class='hs-varid'>doMkDependHS</span>
<a name="line-14"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-15"></a>
<a name="line-16"></a><span class='hs-cpp'>#include "HsVersions.h"</span>
<a name="line-17"></a>
<a name="line-18"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>GHC</span>
<a name="line-19"></a><span class='hs-comment'>-- import GHC ( ModSummary(..), GhcMonad )</span>
<a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>HsSyn</span> <span class='hs-layout'>(</span> <span class='hs-conid'>ImportDecl</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>PrelNames</span>
<a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>DynFlags</span>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Util</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>HscTypes</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>SysTools</span> <span class='hs-layout'>(</span> <span class='hs-varid'>newTempName</span> <span class='hs-layout'>)</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>SysTools</span>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Module</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Digraph</span> <span class='hs-layout'>(</span> <span class='hs-conid'>SCC</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Finder</span>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Outputable</span>
<a name="line-31"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Panic</span>
<a name="line-32"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>SrcLoc</span>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>FastString</span>
<a name="line-35"></a>
<a name="line-36"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Exception</span>
<a name="line-37"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ErrUtils</span>
<a name="line-38"></a><span class='hs-comment'>-- import MonadUtils ( liftIO )</span>
<a name="line-39"></a>
<a name="line-40"></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-41"></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-42"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span>
<a name="line-43"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Error</span> <span class='hs-layout'>(</span> <span class='hs-varid'>isEOFError</span> <span class='hs-layout'>)</span>
<a name="line-44"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span> <span class='hs-layout'>(</span> <span class='hs-varid'>when</span> <span class='hs-layout'>)</span>
<a name="line-45"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span> <span class='hs-varid'>isJust</span> <span class='hs-layout'>)</span>
<a name="line-46"></a>
<a name="line-47"></a><span class='hs-comment'>-----------------------------------------------------------------</span>
<a name="line-48"></a><span class='hs-comment'>--</span>
<a name="line-49"></a><span class='hs-comment'>-- The main function</span>
<a name="line-50"></a><span class='hs-comment'>--</span>
<a name="line-51"></a><span class='hs-comment'>-----------------------------------------------------------------</span>
<a name="line-52"></a>
<a name="line-53"></a><a name="doMkDependHS"></a><span class='hs-definition'>doMkDependHS</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GhcMonad</span> <span class='hs-varid'>m</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-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-54"></a><span class='hs-definition'>doMkDependHS</span> <span class='hs-varid'>srcs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-55"></a> <span class='hs-comment'>-- Initialisation</span>
<a name="line-56"></a> <span class='hs-varid'>dflags</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-varid'>getSessionDynFlags</span>
<a name="line-57"></a> <span class='hs-varid'>files</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>beginMkDependHS</span> <span class='hs-varid'>dflags</span>
<a name="line-58"></a>
<a name="line-59"></a> <span class='hs-comment'>-- Do the downsweep to find all the modules</span>
<a name="line-60"></a> <span class='hs-varid'>targets</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-varid'>guessTarget</span> <span class='hs-varid'>s</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-varid'>srcs</span>
<a name="line-61"></a> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-varid'>setTargets</span> <span class='hs-varid'>targets</span>
<a name="line-62"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>excl_mods</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>depExcludeMods</span> <span class='hs-varid'>dflags</span>
<a name="line-63"></a> <span class='hs-varid'>mod_summaries</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-varid'>depanal</span> <span class='hs-varid'>excl_mods</span> <span class='hs-conid'>True</span> <span class='hs-comment'>{- Allow dup roots -}</span>
<a name="line-64"></a>
<a name="line-65"></a> <span class='hs-comment'>-- Sort into dependency order</span>
<a name="line-66"></a> <span class='hs-comment'>-- There should be no cycles</span>
<a name="line-67"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>sorted</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-varid'>topSortModuleGraph</span> <span class='hs-conid'>False</span> <span class='hs-varid'>mod_summaries</span> <span class='hs-conid'>Nothing</span>
<a name="line-68"></a>
<a name="line-69"></a> <span class='hs-comment'>-- Print out the dependencies if wanted</span>
<a name="line-70"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>debugTraceMsg</span> <span class='hs-varid'>dflags</span> <span class='hs-num'>2</span> <span class='hs-layout'>(</span><span class='hs-varid'>text</span> <span class='hs-str'>"Module dependencies"</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>ppr</span> <span class='hs-varid'>sorted</span><span class='hs-layout'>)</span>
<a name="line-71"></a>
<a name="line-72"></a> <span class='hs-comment'>-- Prcess them one by one, dumping results into makefile</span>
<a name="line-73"></a> <span class='hs-comment'>-- and complaining about cycles</span>
<a name="line-74"></a> <span class='hs-varid'>hsc_env</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getSession</span>
<a name="line-75"></a> <span class='hs-varid'>root</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>liftIO</span> <span class='hs-varid'>getCurrentDirectory</span>
<a name="line-76"></a> <span class='hs-varid'>mapM_</span> <span class='hs-layout'>(</span><span class='hs-varid'>liftIO</span> <span class='hs-varop'>.</span> <span class='hs-varid'>processDeps</span> <span class='hs-varid'>dflags</span> <span class='hs-varid'>hsc_env</span> <span class='hs-varid'>excl_mods</span> <span class='hs-varid'>root</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkd_tmp_hdl</span> <span class='hs-varid'>files</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>sorted</span>
<a name="line-77"></a>
<a name="line-78"></a> <span class='hs-comment'>-- If -ddump-mod-cycles, show cycles in the module graph</span>
<a name="line-79"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>dumpModCycles</span> <span class='hs-varid'>dflags</span> <span class='hs-varid'>mod_summaries</span>
<a name="line-80"></a>
<a name="line-81"></a> <span class='hs-comment'>-- Tidy up</span>
<a name="line-82"></a> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-varid'>endMkDependHS</span> <span class='hs-varid'>dflags</span> <span class='hs-varid'>files</span>
<a name="line-83"></a>
<a name="line-84"></a> <span class='hs-comment'>-- Unconditional exiting is a bad idea. If an error occurs we'll get an</span>
<a name="line-85"></a> <span class='hs-comment'>--exception; if that is not caught it's fine, but at least we have a</span>
<a name="line-86"></a> <span class='hs-comment'>--chance to find out exactly what went wrong. Uncomment the following</span>
<a name="line-87"></a> <span class='hs-comment'>--line if you disagree.</span>
<a name="line-88"></a>
<a name="line-89"></a> <span class='hs-comment'>--`GHC.ghcCatch` \_ -> io $ exitWith (ExitFailure 1)</span>
<a name="line-90"></a>
<a name="line-91"></a><span class='hs-comment'>-----------------------------------------------------------------</span>
<a name="line-92"></a><span class='hs-comment'>--</span>
<a name="line-93"></a><span class='hs-comment'>-- beginMkDependHs</span>
<a name="line-94"></a><span class='hs-comment'>-- Create a temporary file,</span>
<a name="line-95"></a><span class='hs-comment'>-- find the Makefile,</span>
<a name="line-96"></a><span class='hs-comment'>-- slurp through it, etc</span>
<a name="line-97"></a><span class='hs-comment'>--</span>
<a name="line-98"></a><span class='hs-comment'>-----------------------------------------------------------------</span>
<a name="line-99"></a>
<a name="line-100"></a><a name="MkDepFiles"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>MkDepFiles</span>
<a name="line-101"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>MkDep</span> <span class='hs-layout'>{</span> <span class='hs-varid'>mkd_make_file</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FilePath</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- Name of the makefile</span>
<a name="line-102"></a> <span class='hs-varid'>mkd_make_hdl</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Handle</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- Handle for the open makefile</span>
<a name="line-103"></a> <span class='hs-varid'>mkd_tmp_file</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FilePath</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- Name of the temporary file</span>
<a name="line-104"></a> <span class='hs-varid'>mkd_tmp_hdl</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Handle</span> <span class='hs-layout'>}</span> <span class='hs-comment'>-- Handle of the open temporary file</span>
<a name="line-105"></a>
<a name="line-106"></a><a name="beginMkDependHS"></a><span class='hs-definition'>beginMkDependHS</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DynFlags</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>MkDepFiles</span>
<a name="line-107"></a><span class='hs-definition'>beginMkDependHS</span> <span class='hs-varid'>dflags</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-108"></a> <span class='hs-comment'>-- open a new temp file in which to stuff the dependency info</span>
<a name="line-109"></a> <span class='hs-comment'>-- as we go along.</span>
<a name="line-110"></a> <span class='hs-varid'>tmp_file</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newTempName</span> <span class='hs-varid'>dflags</span> <span class='hs-str'>"dep"</span>
<a name="line-111"></a> <span class='hs-varid'>tmp_hdl</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>openFile</span> <span class='hs-varid'>tmp_file</span> <span class='hs-conid'>WriteMode</span>
<a name="line-112"></a>
<a name="line-113"></a> <span class='hs-comment'>-- open the makefile</span>
<a name="line-114"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>makefile</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>depMakefile</span> <span class='hs-varid'>dflags</span>
<a name="line-115"></a> <span class='hs-varid'>exists</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>doesFileExist</span> <span class='hs-varid'>makefile</span>
<a name="line-116"></a> <span class='hs-varid'>mb_make_hdl</span> <span class='hs-keyglyph'><-</span>
<a name="line-117"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>not</span> <span class='hs-varid'>exists</span>
<a name="line-118"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-119"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-120"></a> <span class='hs-varid'>makefile_hdl</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>openFile</span> <span class='hs-varid'>makefile</span> <span class='hs-conid'>ReadMode</span>
<a name="line-121"></a>
<a name="line-122"></a> <span class='hs-comment'>-- slurp through until we get the magic start string,</span>
<a name="line-123"></a> <span class='hs-comment'>-- copying the contents into dep_makefile</span>
<a name="line-124"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>slurp</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-125"></a> <span class='hs-varid'>l</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hGetLine</span> <span class='hs-varid'>makefile_hdl</span>
<a name="line-126"></a> <span class='hs-keyword'>if</span> <span class='hs-layout'>(</span><span class='hs-varid'>l</span> <span class='hs-varop'>==</span> <span class='hs-varid'>depStartMarker</span><span class='hs-layout'>)</span>
<a name="line-127"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-128"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>hPutStrLn</span> <span class='hs-varid'>tmp_hdl</span> <span class='hs-varid'>l</span><span class='hs-layout'>;</span> <span class='hs-varid'>slurp</span>
<a name="line-129"></a>
<a name="line-130"></a> <span class='hs-comment'>-- slurp through until we get the magic end marker,</span>
<a name="line-131"></a> <span class='hs-comment'>-- throwing away the contents</span>
<a name="line-132"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>chuck</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-133"></a> <span class='hs-varid'>l</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hGetLine</span> <span class='hs-varid'>makefile_hdl</span>
<a name="line-134"></a> <span class='hs-keyword'>if</span> <span class='hs-layout'>(</span><span class='hs-varid'>l</span> <span class='hs-varop'>==</span> <span class='hs-varid'>depEndMarker</span><span class='hs-layout'>)</span>
<a name="line-135"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-136"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>chuck</span>
<a name="line-137"></a>
<a name="line-138"></a> <span class='hs-varid'>catchIO</span> <span class='hs-varid'>slurp</span>
<a name="line-139"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>if</span> <span class='hs-varid'>isEOFError</span> <span class='hs-varid'>e</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>ioError</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span>
<a name="line-140"></a> <span class='hs-varid'>catchIO</span> <span class='hs-varid'>chuck</span>
<a name="line-141"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>if</span> <span class='hs-varid'>isEOFError</span> <span class='hs-varid'>e</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>ioError</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span>
<a name="line-142"></a>
<a name="line-143"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>makefile_hdl</span><span class='hs-layout'>)</span>
<a name="line-144"></a>
<a name="line-145"></a>
<a name="line-146"></a> <span class='hs-comment'>-- write the magic marker into the tmp file</span>
<a name="line-147"></a> <span class='hs-varid'>hPutStrLn</span> <span class='hs-varid'>tmp_hdl</span> <span class='hs-varid'>depStartMarker</span>
<a name="line-148"></a>
<a name="line-149"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkDep</span> <span class='hs-layout'>{</span> <span class='hs-varid'>mkd_make_file</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>makefile</span><span class='hs-layout'>,</span> <span class='hs-varid'>mkd_make_hdl</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mb_make_hdl</span><span class='hs-layout'>,</span>
<a name="line-150"></a> <span class='hs-varid'>mkd_tmp_file</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tmp_file</span><span class='hs-layout'>,</span> <span class='hs-varid'>mkd_tmp_hdl</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tmp_hdl</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-151"></a>
<a name="line-152"></a>
<a name="line-153"></a><span class='hs-comment'>-----------------------------------------------------------------</span>
<a name="line-154"></a><span class='hs-comment'>--</span>
<a name="line-155"></a><span class='hs-comment'>-- processDeps</span>
<a name="line-156"></a><span class='hs-comment'>--</span>
<a name="line-157"></a><span class='hs-comment'>-----------------------------------------------------------------</span>
<a name="line-158"></a>
<a name="line-159"></a><a name="processDeps"></a><span class='hs-definition'>processDeps</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DynFlags</span>
<a name="line-160"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>HscEnv</span>
<a name="line-161"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ModuleName</span><span class='hs-keyglyph'>]</span>
<a name="line-162"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span>
<a name="line-163"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Handle</span> <span class='hs-comment'>-- Write dependencies to here</span>
<a name="line-164"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SCC</span> <span class='hs-conid'>ModSummary</span>
<a name="line-165"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-166"></a><span class='hs-comment'>-- Write suitable dependencies to handle</span>
<a name="line-167"></a><span class='hs-comment'>-- Always:</span>
<a name="line-168"></a><span class='hs-comment'>-- this.o : this.hs</span>
<a name="line-169"></a><span class='hs-comment'>--</span>
<a name="line-170"></a><span class='hs-comment'>-- If the dependency is on something other than a .hi file:</span>
<a name="line-171"></a><span class='hs-comment'>-- this.o this.p_o ... : dep</span>
<a name="line-172"></a><span class='hs-comment'>-- otherwise</span>
<a name="line-173"></a><span class='hs-comment'>-- this.o ... : dep.hi</span>
<a name="line-174"></a><span class='hs-comment'>-- this.p_o ... : dep.p_hi</span>
<a name="line-175"></a><span class='hs-comment'>-- ...</span>
<a name="line-176"></a><span class='hs-comment'>-- (where .o is $osuf, and the other suffixes come from</span>
<a name="line-177"></a><span class='hs-comment'>-- the cmdline -s options).</span>
<a name="line-178"></a><span class='hs-comment'>--</span>
<a name="line-179"></a><span class='hs-comment'>-- For {-# SOURCE #-} imports the "hi" will be "hi-boot".</span>
<a name="line-180"></a>
<a name="line-181"></a><span class='hs-definition'>processDeps</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>CyclicSCC</span> <span class='hs-varid'>nodes</span><span class='hs-layout'>)</span>
<a name="line-182"></a> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>-- There shouldn't be any cycles; report them</span>
<a name="line-183"></a> <span class='hs-varid'>ghcError</span> <span class='hs-layout'>(</span><span class='hs-conid'>ProgramError</span> <span class='hs-layout'>(</span><span class='hs-varid'>showSDoc</span> <span class='hs-varop'>$</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-varid'>cyclicModuleErr</span> <span class='hs-varid'>nodes</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-184"></a>
<a name="line-185"></a><span class='hs-definition'>processDeps</span> <span class='hs-varid'>dflags</span> <span class='hs-varid'>hsc_env</span> <span class='hs-varid'>excl_mods</span> <span class='hs-varid'>root</span> <span class='hs-varid'>hdl</span> <span class='hs-layout'>(</span><span class='hs-conid'>AcyclicSCC</span> <span class='hs-varid'>node</span><span class='hs-layout'>)</span>
<a name="line-186"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>extra_suffixes</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>depSuffixes</span> <span class='hs-varid'>dflags</span>
<a name="line-187"></a> <span class='hs-varid'>include_pkg_deps</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>depIncludePkgDeps</span> <span class='hs-varid'>dflags</span>
<a name="line-188"></a> <span class='hs-varid'>src_file</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>msHsFilePath</span> <span class='hs-varid'>node</span>
<a name="line-189"></a> <span class='hs-varid'>obj_file</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>msObjFilePath</span> <span class='hs-varid'>node</span>
<a name="line-190"></a> <span class='hs-varid'>obj_files</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>insertSuffixes</span> <span class='hs-varid'>obj_file</span> <span class='hs-varid'>extra_suffixes</span>
<a name="line-191"></a>
<a name="line-192"></a> <span class='hs-varid'>do_imp</span> <span class='hs-varid'>loc</span> <span class='hs-varid'>is_boot</span> <span class='hs-varid'>pkg_qual</span> <span class='hs-varid'>imp_mod</span>
<a name="line-193"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-varid'>mb_hi</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>findDependency</span> <span class='hs-varid'>hsc_env</span> <span class='hs-varid'>loc</span> <span class='hs-varid'>pkg_qual</span> <span class='hs-varid'>imp_mod</span>
<a name="line-194"></a> <span class='hs-varid'>is_boot</span> <span class='hs-varid'>include_pkg_deps</span>
<a name="line-195"></a> <span class='hs-layout'>;</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>mb_hi</span> <span class='hs-keyword'>of</span> <span class='hs-layout'>{</span>
<a name="line-196"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span> <span class='hs-layout'>;</span>
<a name="line-197"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>hi_file</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-198"></a> <span class='hs-layout'>{</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>hi_files</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>insertSuffixes</span> <span class='hs-varid'>hi_file</span> <span class='hs-varid'>extra_suffixes</span>
<a name="line-199"></a> <span class='hs-varid'>write_dep</span> <span class='hs-layout'>(</span><span class='hs-varid'>obj</span><span class='hs-layout'>,</span><span class='hs-varid'>hi</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>writeDependency</span> <span class='hs-varid'>root</span> <span class='hs-varid'>hdl</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>obj</span><span class='hs-keyglyph'>]</span> <span class='hs-varid'>hi</span>
<a name="line-200"></a>
<a name="line-201"></a> <span class='hs-comment'>-- Add one dependency for each suffix;</span>
<a name="line-202"></a> <span class='hs-comment'>-- e.g. A.o : B.hi</span>
<a name="line-203"></a> <span class='hs-comment'>-- A.x_o : B.x_hi</span>
<a name="line-204"></a> <span class='hs-layout'>;</span> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>write_dep</span> <span class='hs-layout'>(</span><span class='hs-varid'>obj_files</span> <span class='hs-varop'>`zip`</span> <span class='hs-varid'>hi_files</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span><span class='hs-layout'>}</span><span class='hs-layout'>}</span>
<a name="line-205"></a>
<a name="line-206"></a>
<a name="line-207"></a> <span class='hs-comment'>-- Emit std dependency of the object(s) on the source file</span>
<a name="line-208"></a> <span class='hs-comment'>-- Something like A.o : A.hs</span>
<a name="line-209"></a> <span class='hs-layout'>;</span> <span class='hs-varid'>writeDependency</span> <span class='hs-varid'>root</span> <span class='hs-varid'>hdl</span> <span class='hs-varid'>obj_files</span> <span class='hs-varid'>src_file</span>
<a name="line-210"></a>
<a name="line-211"></a> <span class='hs-comment'>-- Emit a dependency for each import</span>
<a name="line-212"></a>
<a name="line-213"></a> <span class='hs-layout'>;</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>do_imps</span> <span class='hs-varid'>is_boot</span> <span class='hs-varid'>idecls</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sequence_</span>
<a name="line-214"></a> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>do_imp</span> <span class='hs-varid'>loc</span> <span class='hs-varid'>is_boot</span> <span class='hs-layout'>(</span><span class='hs-varid'>ideclPkgQual</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varid'>mod</span>
<a name="line-215"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>L</span> <span class='hs-varid'>loc</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>idecls</span><span class='hs-layout'>,</span>
<a name="line-216"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>mod</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unLoc</span> <span class='hs-layout'>(</span><span class='hs-varid'>ideclName</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-217"></a> <span class='hs-varid'>mod</span> <span class='hs-varop'>`notElem`</span> <span class='hs-varid'>excl_mods</span> <span class='hs-keyglyph'>]</span>
<a name="line-218"></a>
<a name="line-219"></a> <span class='hs-layout'>;</span> <span class='hs-varid'>do_imps</span> <span class='hs-conid'>True</span> <span class='hs-layout'>(</span><span class='hs-varid'>ms_srcimps</span> <span class='hs-varid'>node</span><span class='hs-layout'>)</span>
<a name="line-220"></a> <span class='hs-layout'>;</span> <span class='hs-varid'>do_imps</span> <span class='hs-conid'>False</span> <span class='hs-layout'>(</span><span class='hs-varid'>ms_imps</span> <span class='hs-varid'>node</span><span class='hs-layout'>)</span>
<a name="line-221"></a>
<a name="line-222"></a> <span class='hs-layout'>;</span> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>dopt</span> <span class='hs-conid'>Opt_ImplicitPrelude</span> <span class='hs-layout'>(</span><span class='hs-varid'>ms_hspp_opts</span> <span class='hs-varid'>node</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-223"></a> <span class='hs-varid'>do_imp</span> <span class='hs-varid'>noSrcSpan</span> <span class='hs-conid'>False</span> <span class='hs-conid'>Nothing</span> <span class='hs-varid'>pRELUDE_NAME</span>
<a name="line-224"></a> <span class='hs-layout'>}</span>
<a name="line-225"></a>
<a name="line-226"></a>
<a name="line-227"></a><a name="findDependency"></a><span class='hs-definition'>findDependency</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HscEnv</span>
<a name="line-228"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SrcSpan</span>
<a name="line-229"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>FastString</span> <span class='hs-comment'>-- package qualifier, if any</span>
<a name="line-230"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ModuleName</span> <span class='hs-comment'>-- Imported module</span>
<a name="line-231"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IsBootInterface</span> <span class='hs-comment'>-- Source import</span>
<a name="line-232"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- Record dependency on package modules</span>
<a name="line-233"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>FilePath</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- Interface file file</span>
<a name="line-234"></a><span class='hs-definition'>findDependency</span> <span class='hs-varid'>hsc_env</span> <span class='hs-varid'>srcloc</span> <span class='hs-varid'>pkg</span> <span class='hs-varid'>imp</span> <span class='hs-varid'>is_boot</span> <span class='hs-varid'>include_pkg_deps</span>
<a name="line-235"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-comment'>-- Find the module; this will be fast because</span>
<a name="line-236"></a> <span class='hs-comment'>-- we've done it once during downsweep</span>
<a name="line-237"></a> <span class='hs-varid'>r</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>findImportedModule</span> <span class='hs-varid'>hsc_env</span> <span class='hs-varid'>imp</span> <span class='hs-varid'>pkg</span>
<a name="line-238"></a> <span class='hs-layout'>;</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>r</span> <span class='hs-keyword'>of</span>
<a name="line-239"></a> <span class='hs-conid'>Found</span> <span class='hs-varid'>loc</span> <span class='hs-keyword'>_</span>
<a name="line-240"></a> <span class='hs-comment'>-- Home package: just depend on the .hi or hi-boot file</span>
<a name="line-241"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isJust</span> <span class='hs-layout'>(</span><span class='hs-varid'>ml_hs_file</span> <span class='hs-varid'>loc</span><span class='hs-layout'>)</span> <span class='hs-varop'>||</span> <span class='hs-varid'>include_pkg_deps</span>
<a name="line-242"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>addBootSuffix_maybe</span> <span class='hs-varid'>is_boot</span> <span class='hs-layout'>(</span><span class='hs-varid'>ml_hi_file</span> <span class='hs-varid'>loc</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-243"></a>
<a name="line-244"></a> <span class='hs-comment'>-- Not in this package: we don't need a dependency</span>
<a name="line-245"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span>
<a name="line-246"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-247"></a>
<a name="line-248"></a> <span class='hs-varid'>fail</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>throwOneError</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mkPlainErrMsg</span> <span class='hs-varid'>srcloc</span> <span class='hs-varop'>$</span>
<a name="line-249"></a> <span class='hs-varid'>cannotFindModule</span> <span class='hs-layout'>(</span><span class='hs-varid'>hsc_dflags</span> <span class='hs-varid'>hsc_env</span><span class='hs-layout'>)</span> <span class='hs-varid'>imp</span> <span class='hs-varid'>fail</span>
<a name="line-250"></a> <span class='hs-layout'>}</span>
<a name="line-251"></a>
<a name="line-252"></a><a name="writeDependency"></a><span class='hs-comment'>-----------------------------</span>
<a name="line-253"></a><span class='hs-definition'>writeDependency</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Handle</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'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-254"></a><span class='hs-comment'>-- (writeDependency r h [t1,t2] dep) writes to handle h the dependency</span>
<a name="line-255"></a><span class='hs-comment'>-- t1 t2 : dep</span>
<a name="line-256"></a><span class='hs-definition'>writeDependency</span> <span class='hs-varid'>root</span> <span class='hs-varid'>hdl</span> <span class='hs-varid'>targets</span> <span class='hs-varid'>dep</span>
<a name="line-257"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-keyword'>let</span> <span class='hs-comment'>-- We need to avoid making deps on</span>
<a name="line-258"></a> <span class='hs-comment'>-- c:/foo/...</span>
<a name="line-259"></a> <span class='hs-comment'>-- on cygwin as make gets confused by the :</span>
<a name="line-260"></a> <span class='hs-comment'>-- Making relative deps avoids some instances of this.</span>
<a name="line-261"></a> <span class='hs-varid'>dep'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>makeRelative</span> <span class='hs-varid'>root</span> <span class='hs-varid'>dep</span>
<a name="line-262"></a> <span class='hs-varid'>forOutput</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>escapeSpaces</span> <span class='hs-varop'>.</span> <span class='hs-varid'>reslash</span> <span class='hs-conid'>Forwards</span> <span class='hs-varop'>.</span> <span class='hs-varid'>normalise</span>
<a name="line-263"></a> <span class='hs-varid'>output</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unwords</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>forOutput</span> <span class='hs-varid'>targets</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span> <span class='hs-str'>" : "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>forOutput</span> <span class='hs-varid'>dep'</span>
<a name="line-264"></a> <span class='hs-varid'>hPutStrLn</span> <span class='hs-varid'>hdl</span> <span class='hs-varid'>output</span>
<a name="line-265"></a>
<a name="line-266"></a><a name="insertSuffixes"></a><span class='hs-comment'>-----------------------------</span>
<a name="line-267"></a><span class='hs-definition'>insertSuffixes</span>
<a name="line-268"></a> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FilePath</span> <span class='hs-comment'>-- Original filename; e.g. "foo.o"</span>
<a name="line-269"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- Extra suffices e.g. ["x","y"]</span>
<a name="line-270"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>FilePath</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- Zapped filenames e.g. ["foo.o", "foo.x_o", "foo.y_o"]</span>
<a name="line-271"></a> <span class='hs-comment'>-- Note that that the extra bit gets inserted *before* the old suffix</span>
<a name="line-272"></a> <span class='hs-comment'>-- We assume the old suffix contains no dots, so we can strip it with removeSuffix</span>
<a name="line-273"></a>
<a name="line-274"></a> <span class='hs-comment'>-- NOTE: we used to have this comment</span>
<a name="line-275"></a> <span class='hs-comment'>-- In order to construct hi files with alternate suffixes, we</span>
<a name="line-276"></a> <span class='hs-comment'>-- now have to find the "basename" of the hi file. This is</span>
<a name="line-277"></a> <span class='hs-comment'>-- difficult because we can't just split the hi filename</span>
<a name="line-278"></a> <span class='hs-comment'>-- at the last dot - the hisuf might have dots in it. So we</span>
<a name="line-279"></a> <span class='hs-comment'>-- check whether the hi filename ends in hisuf, and if it does,</span>
<a name="line-280"></a> <span class='hs-comment'>-- we strip off hisuf, otherwise we strip everything after the</span>
<a name="line-281"></a> <span class='hs-comment'>-- last dot.</span>
<a name="line-282"></a> <span class='hs-comment'>-- But I'm not sure we care about hisufs with dots in them.</span>
<a name="line-283"></a> <span class='hs-comment'>-- Lots of other things will break first!</span>
<a name="line-284"></a>
<a name="line-285"></a><span class='hs-definition'>insertSuffixes</span> <span class='hs-varid'>file_name</span> <span class='hs-varid'>extras</span>
<a name="line-286"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>file_name</span> <span class='hs-conop'>:</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>basename</span> <span class='hs-varop'><.></span> <span class='hs-layout'>(</span><span class='hs-varid'>extra</span> <span class='hs-varop'>++</span> <span class='hs-str'>"_"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>suffix</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>extra</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>extras</span> <span class='hs-keyglyph'>]</span>
<a name="line-287"></a> <span class='hs-keyword'>where</span>
<a name="line-288"></a> <span class='hs-layout'>(</span><span class='hs-varid'>basename</span><span class='hs-layout'>,</span> <span class='hs-varid'>suffix</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>splitExtension</span> <span class='hs-varid'>file_name</span> <span class='hs-keyword'>of</span>
<a name="line-289"></a> <span class='hs-comment'>-- Drop the "." from the extension</span>
<a name="line-290"></a> <span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-varid'>drop</span> <span class='hs-num'>1</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-291"></a>
<a name="line-292"></a>
<a name="line-293"></a><span class='hs-comment'>-----------------------------------------------------------------</span>
<a name="line-294"></a><span class='hs-comment'>--</span>
<a name="line-295"></a><span class='hs-comment'>-- endMkDependHs</span>
<a name="line-296"></a><span class='hs-comment'>-- Complete the makefile, close the tmp file etc</span>
<a name="line-297"></a><span class='hs-comment'>--</span>
<a name="line-298"></a><span class='hs-comment'>-----------------------------------------------------------------</span>
<a name="line-299"></a>
<a name="line-300"></a><a name="endMkDependHS"></a><span class='hs-definition'>endMkDependHS</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DynFlags</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>MkDepFiles</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-301"></a>
<a name="line-302"></a><span class='hs-definition'>endMkDependHS</span> <span class='hs-varid'>dflags</span>
<a name="line-303"></a> <span class='hs-layout'>(</span><span class='hs-conid'>MkDep</span> <span class='hs-layout'>{</span> <span class='hs-varid'>mkd_make_file</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>makefile</span><span class='hs-layout'>,</span> <span class='hs-varid'>mkd_make_hdl</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>makefile_hdl</span><span class='hs-layout'>,</span>
<a name="line-304"></a> <span class='hs-varid'>mkd_tmp_file</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tmp_file</span><span class='hs-layout'>,</span> <span class='hs-varid'>mkd_tmp_hdl</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tmp_hdl</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-305"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-306"></a> <span class='hs-comment'>-- write the magic marker into the tmp file</span>
<a name="line-307"></a> <span class='hs-varid'>hPutStrLn</span> <span class='hs-varid'>tmp_hdl</span> <span class='hs-varid'>depEndMarker</span>
<a name="line-308"></a>
<a name="line-309"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>makefile_hdl</span> <span class='hs-keyword'>of</span>
<a name="line-310"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-311"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>hdl</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-312"></a>
<a name="line-313"></a> <span class='hs-comment'>-- slurp the rest of the original makefile and copy it into the output</span>
<a name="line-314"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>slurp</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-315"></a> <span class='hs-varid'>l</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hGetLine</span> <span class='hs-varid'>hdl</span>
<a name="line-316"></a> <span class='hs-varid'>hPutStrLn</span> <span class='hs-varid'>tmp_hdl</span> <span class='hs-varid'>l</span>
<a name="line-317"></a> <span class='hs-varid'>slurp</span>
<a name="line-318"></a>
<a name="line-319"></a> <span class='hs-varid'>catchIO</span> <span class='hs-varid'>slurp</span>
<a name="line-320"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>if</span> <span class='hs-varid'>isEOFError</span> <span class='hs-varid'>e</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>ioError</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span>
<a name="line-321"></a>
<a name="line-322"></a> <span class='hs-varid'>hClose</span> <span class='hs-varid'>hdl</span>
<a name="line-323"></a>
<a name="line-324"></a> <span class='hs-varid'>hClose</span> <span class='hs-varid'>tmp_hdl</span> <span class='hs-comment'>-- make sure it's flushed</span>
<a name="line-325"></a>
<a name="line-326"></a> <span class='hs-comment'>-- Create a backup of the original makefile</span>
<a name="line-327"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>isJust</span> <span class='hs-varid'>makefile_hdl</span><span class='hs-layout'>)</span>
<a name="line-328"></a> <span class='hs-layout'>(</span><span class='hs-conid'>SysTools</span><span class='hs-varop'>.</span><span class='hs-varid'>copy</span> <span class='hs-varid'>dflags</span> <span class='hs-layout'>(</span><span class='hs-str'>"Backing up "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>makefile</span><span class='hs-layout'>)</span>
<a name="line-329"></a> <span class='hs-varid'>makefile</span> <span class='hs-layout'>(</span><span class='hs-varid'>makefile</span><span class='hs-varop'>++</span><span class='hs-str'>".bak"</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-330"></a>
<a name="line-331"></a> <span class='hs-comment'>-- Copy the new makefile in place</span>
<a name="line-332"></a> <span class='hs-conid'>SysTools</span><span class='hs-varop'>.</span><span class='hs-varid'>copy</span> <span class='hs-varid'>dflags</span> <span class='hs-str'>"Installing new makefile"</span> <span class='hs-varid'>tmp_file</span> <span class='hs-varid'>makefile</span>
<a name="line-333"></a>
<a name="line-334"></a>
<a name="line-335"></a><span class='hs-comment'>-----------------------------------------------------------------</span>
<a name="line-336"></a><span class='hs-comment'>-- Module cycles</span>
<a name="line-337"></a><span class='hs-comment'>-----------------------------------------------------------------</span>
<a name="line-338"></a>
<a name="line-339"></a><a name="dumpModCycles"></a><span class='hs-definition'>dumpModCycles</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DynFlags</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ModSummary</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-340"></a><span class='hs-definition'>dumpModCycles</span> <span class='hs-varid'>dflags</span> <span class='hs-varid'>mod_summaries</span>
<a name="line-341"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>dopt</span> <span class='hs-conid'>Opt_D_dump_mod_cycles</span> <span class='hs-varid'>dflags</span><span class='hs-layout'>)</span>
<a name="line-342"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-343"></a>
<a name="line-344"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>null</span> <span class='hs-varid'>cycles</span>
<a name="line-345"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>putMsg</span> <span class='hs-varid'>dflags</span> <span class='hs-layout'>(</span><span class='hs-varid'>ptext</span> <span class='hs-layout'>(</span><span class='hs-varid'>sLit</span> <span class='hs-str'>"No module cycles"</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-346"></a>
<a name="line-347"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span>
<a name="line-348"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>putMsg</span> <span class='hs-varid'>dflags</span> <span class='hs-layout'>(</span><span class='hs-varid'>hang</span> <span class='hs-layout'>(</span><span class='hs-varid'>ptext</span> <span class='hs-layout'>(</span><span class='hs-varid'>sLit</span> <span class='hs-str'>"Module cycles found:"</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-num'>2</span> <span class='hs-varid'>pp_cycles</span><span class='hs-layout'>)</span>
<a name="line-349"></a> <span class='hs-keyword'>where</span>
<a name="line-350"></a>
<a name="line-351"></a> <span class='hs-varid'>cycles</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>ModSummary</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span>
<a name="line-352"></a> <span class='hs-varid'>cycles</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>CyclicSCC</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-varid'>topSortModuleGraph</span> <span class='hs-conid'>True</span> <span class='hs-varid'>mod_summaries</span> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>]</span>
<a name="line-353"></a>
<a name="line-354"></a> <span class='hs-varid'>pp_cycles</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>vcat</span> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-varid'>ptext</span> <span class='hs-layout'>(</span><span class='hs-varid'>sLit</span> <span class='hs-str'>"---------- Cycle"</span><span class='hs-layout'>)</span> <span class='hs-varop'><+></span> <span class='hs-varid'>int</span> <span class='hs-varid'>n</span> <span class='hs-varop'><+></span> <span class='hs-varid'>ptext</span> <span class='hs-layout'>(</span><span class='hs-varid'>sLit</span> <span class='hs-str'>"----------"</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-355"></a> <span class='hs-varop'>$$</span> <span class='hs-varid'>pprCycle</span> <span class='hs-varid'>c</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>text</span> <span class='hs-str'>""</span>
<a name="line-356"></a> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-layout'>,</span><span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>1</span><span class='hs-keyglyph'>..</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>`zip`</span> <span class='hs-varid'>cycles</span> <span class='hs-keyglyph'>]</span>
<a name="line-357"></a>
<a name="line-358"></a><a name="pprCycle"></a><span class='hs-definition'>pprCycle</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ModSummary</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SDoc</span>
<a name="line-359"></a><span class='hs-comment'>-- Print a cycle, but show only the imports within the cycle</span>
<a name="line-360"></a><span class='hs-definition'>pprCycle</span> <span class='hs-varid'>summaries</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pp_group</span> <span class='hs-layout'>(</span><span class='hs-conid'>CyclicSCC</span> <span class='hs-varid'>summaries</span><span class='hs-layout'>)</span>
<a name="line-361"></a> <span class='hs-keyword'>where</span>
<a name="line-362"></a> <span class='hs-varid'>cycle_mods</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ModuleName</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- The modules in this cycle</span>
<a name="line-363"></a> <span class='hs-varid'>cycle_mods</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>moduleName</span> <span class='hs-varop'>.</span> <span class='hs-varid'>ms_mod</span><span class='hs-layout'>)</span> <span class='hs-varid'>summaries</span>
<a name="line-364"></a>
<a name="line-365"></a> <span class='hs-varid'>pp_group</span> <span class='hs-layout'>(</span><span class='hs-conid'>AcyclicSCC</span> <span class='hs-varid'>ms</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pp_ms</span> <span class='hs-varid'>ms</span>
<a name="line-366"></a> <span class='hs-varid'>pp_group</span> <span class='hs-layout'>(</span><span class='hs-conid'>CyclicSCC</span> <span class='hs-varid'>mss</span><span class='hs-layout'>)</span>
<a name="line-367"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ASSERT</span><span class='hs-layout'>(</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>null</span> <span class='hs-varid'>boot_only</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-368"></a> <span class='hs-comment'>-- The boot-only list must be non-empty, else there would</span>
<a name="line-369"></a> <span class='hs-comment'>-- be an infinite chain of non-boot imoprts, and we've</span>
<a name="line-370"></a> <span class='hs-comment'>-- already checked for that in processModDeps</span>
<a name="line-371"></a> <span class='hs-varid'>pp_ms</span> <span class='hs-varid'>loop_breaker</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>vcat</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>pp_group</span> <span class='hs-varid'>groups</span><span class='hs-layout'>)</span>
<a name="line-372"></a> <span class='hs-keyword'>where</span>
<a name="line-373"></a> <span class='hs-layout'>(</span><span class='hs-varid'>boot_only</span><span class='hs-layout'>,</span> <span class='hs-varid'>others</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>partition</span> <span class='hs-varid'>is_boot_only</span> <span class='hs-varid'>mss</span>
<a name="line-374"></a> <span class='hs-varid'>is_boot_only</span> <span class='hs-varid'>ms</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>any</span> <span class='hs-varid'>in_group</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>ideclName</span><span class='hs-varop'>.</span><span class='hs-varid'>unLoc</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>ms_imps</span> <span class='hs-varid'>ms</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-375"></a> <span class='hs-varid'>in_group</span> <span class='hs-layout'>(</span><span class='hs-conid'>L</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>m</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>group_mods</span>
<a name="line-376"></a> <span class='hs-varid'>group_mods</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>moduleName</span> <span class='hs-varop'>.</span> <span class='hs-varid'>ms_mod</span><span class='hs-layout'>)</span> <span class='hs-varid'>mss</span>
<a name="line-377"></a>
<a name="line-378"></a> <span class='hs-varid'>loop_breaker</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>head</span> <span class='hs-varid'>boot_only</span>
<a name="line-379"></a> <span class='hs-varid'>all_others</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tail</span> <span class='hs-varid'>boot_only</span> <span class='hs-varop'>++</span> <span class='hs-varid'>others</span>
<a name="line-380"></a> <span class='hs-varid'>groups</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-varid'>topSortModuleGraph</span> <span class='hs-conid'>True</span> <span class='hs-varid'>all_others</span> <span class='hs-conid'>Nothing</span>
<a name="line-381"></a>
<a name="line-382"></a> <span class='hs-varid'>pp_ms</span> <span class='hs-varid'>summary</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>text</span> <span class='hs-varid'>mod_str</span> <span class='hs-varop'><></span> <span class='hs-varid'>text</span> <span class='hs-layout'>(</span><span class='hs-varid'>take</span> <span class='hs-layout'>(</span><span class='hs-num'>20</span> <span class='hs-comment'>-</span> <span class='hs-varid'>length</span> <span class='hs-varid'>mod_str</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>repeat</span> <span class='hs-chr'>' '</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-383"></a> <span class='hs-varop'><+></span> <span class='hs-layout'>(</span><span class='hs-varid'>pp_imps</span> <span class='hs-varid'>empty</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>ideclName</span><span class='hs-varop'>.</span><span class='hs-varid'>unLoc</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>ms_imps</span> <span class='hs-varid'>summary</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$$</span>
<a name="line-384"></a> <span class='hs-varid'>pp_imps</span> <span class='hs-layout'>(</span><span class='hs-varid'>ptext</span> <span class='hs-layout'>(</span><span class='hs-varid'>sLit</span> <span class='hs-str'>"{-# SOURCE #-}"</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>ideclName</span><span class='hs-varop'>.</span><span class='hs-varid'>unLoc</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>ms_srcimps</span> <span class='hs-varid'>summary</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-385"></a> <span class='hs-keyword'>where</span>
<a name="line-386"></a> <span class='hs-varid'>mod_str</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>moduleNameString</span> <span class='hs-layout'>(</span><span class='hs-varid'>moduleName</span> <span class='hs-layout'>(</span><span class='hs-varid'>ms_mod</span> <span class='hs-varid'>summary</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-387"></a>
<a name="line-388"></a> <span class='hs-varid'>pp_imps</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SDoc</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Located</span> <span class='hs-conid'>ModuleName</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SDoc</span>
<a name="line-389"></a> <span class='hs-varid'>pp_imps</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>empty</span>
<a name="line-390"></a> <span class='hs-varid'>pp_imps</span> <span class='hs-varid'>what</span> <span class='hs-varid'>lms</span>
<a name="line-391"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>m</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>L</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lms</span><span class='hs-layout'>,</span> <span class='hs-varid'>m</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>cycle_mods</span><span class='hs-keyglyph'>]</span> <span class='hs-keyword'>of</span>
<a name="line-392"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>empty</span>
<a name="line-393"></a> <span class='hs-varid'>ms</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>what</span> <span class='hs-varop'><+></span> <span class='hs-varid'>ptext</span> <span class='hs-layout'>(</span><span class='hs-varid'>sLit</span> <span class='hs-str'>"imports"</span><span class='hs-layout'>)</span> <span class='hs-varop'><+></span>
<a name="line-394"></a> <span class='hs-varid'>pprWithCommas</span> <span class='hs-varid'>ppr</span> <span class='hs-varid'>ms</span>
<a name="line-395"></a>
<a name="line-396"></a><span class='hs-comment'>-----------------------------------------------------------------</span>
<a name="line-397"></a><span class='hs-comment'>--</span>
<a name="line-398"></a><span class='hs-comment'>-- Flags</span>
<a name="line-399"></a><span class='hs-comment'>--</span>
<a name="line-400"></a><span class='hs-comment'>-----------------------------------------------------------------</span>
<a name="line-401"></a>
<a name="line-402"></a><a name="depStartMarker"></a><span class='hs-definition'>depStartMarker</span><span class='hs-layout'>,</span> <span class='hs-varid'>depEndMarker</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-403"></a><span class='hs-definition'>depStartMarker</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"# DO NOT DELETE: Beginning of Haskell dependencies"</span>
<a name="line-404"></a><a name="depEndMarker"></a><span class='hs-definition'>depEndMarker</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"# DO NOT DELETE: End of Haskell dependencies"</span>
<a name="line-405"></a>
</pre></body>
</html>
