projects / OpenSPARC-T2-DV / blame
| Commit | Line | Data |
|---|---|---|
| 86530b38 AT |
1 | <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> |
| 2 | <html> | |
| 3 | <head> | |
| 4 | <link rel="STYLESHEET" href="ext.css" type='text/css' /> | |
| 5 | <link rel="SHORTCUT ICON" href="../icons/pyfav.png" type="image/png" /> | |
| 6 | <link rel='start' href='../index.html' title='Python Documentation Index' /> | |
| 7 | <link rel="first" href="ext.html" title='Extending and Embedding the Python Interpreter' /> | |
| 8 | <link rel='contents' href='contents.html' title="Contents" /> | |
| 9 | <link rel='last' href='about.html' title='About this document...' /> | |
| 10 | <link rel='help' href='about.html' title='About this document...' /> | |
| 11 | <link rel="prev" href="dynamic-linking.html" /> | |
| 12 | <link rel="parent" href="building-on-windows.html" /> | |
| 13 | <link rel="next" href="embedding.html" /> | |
| 14 | <meta name='aesop' content='information' /> | |
| 15 | <title>4.3 Using DLLs in Practice </title> | |
| 16 | </head> | |
| 17 | <body> | |
| 18 | <DIV CLASS="navigation"> | |
| 19 | <div id='top-navigation-panel' xml:id='top-navigation-panel'> | |
| 20 | <table align="center" width="100%" cellpadding="0" cellspacing="2"> | |
| 21 | <tr> | |
| 22 | <td class='online-navigation'><a rel="prev" title="4.2 Differences Between Unix" | |
| 23 | href="dynamic-linking.html"><img src='../icons/previous.png' | |
| 24 | border='0' height='32' alt='Previous Page' width='32' /></A></td> | |
| 25 | <td class='online-navigation'><a rel="parent" title="4. Building C and" | |
| 26 | href="building-on-windows.html"><img src='../icons/up.png' | |
| 27 | border='0' height='32' alt='Up One Level' width='32' /></A></td> | |
| 28 | <td class='online-navigation'><a rel="next" title="5. Embedding Python in" | |
| 29 | href="embedding.html"><img src='../icons/next.png' | |
| 30 | border='0' height='32' alt='Next Page' width='32' /></A></td> | |
| 31 | <td align="center" width="100%">Extending and Embedding the Python Interpreter</td> | |
| 32 | <td class='online-navigation'><a rel="contents" title="Table of Contents" | |
| 33 | href="contents.html"><img src='../icons/contents.png' | |
| 34 | border='0' height='32' alt='Contents' width='32' /></A></td> | |
| 35 | <td class='online-navigation'><img src='../icons/blank.png' | |
| 36 | border='0' height='32' alt='' width='32' /></td> | |
| 37 | <td class='online-navigation'><img src='../icons/blank.png' | |
| 38 | border='0' height='32' alt='' width='32' /></td> | |
| 39 | </tr></table> | |
| 40 | <div class='online-navigation'> | |
| 41 | <b class="navlabel">Previous:</b> | |
| 42 | <a class="sectref" rel="prev" href="dynamic-linking.html">4.2 Differences Between Unix</A> | |
| 43 | <b class="navlabel">Up:</b> | |
| 44 | <a class="sectref" rel="parent" href="building-on-windows.html">4. Building C and</A> | |
| 45 | <b class="navlabel">Next:</b> | |
| 46 | <a class="sectref" rel="next" href="embedding.html">5. Embedding Python in</A> | |
| 47 | </div> | |
| 48 | <hr /></div> | |
| 49 | </DIV> | |
| 50 | <!--End of Navigation Panel--> | |
| 51 | ||
| 52 | <H1><A NAME="SECTION006300000000000000000"></A><A NAME="win-dlls"></A> | |
| 53 | <BR> | |
| 54 | 4.3 Using DLLs in Practice | |
| 55 | </H1> | |
| 56 | ||
| 57 | <P> | |
| 58 | Windows Python is built in Microsoft Visual C++; using other | |
| 59 | compilers may or may not work (though Borland seems to). The rest of | |
| 60 | this section is MSVC++ specific. | |
| 61 | ||
| 62 | <P> | |
| 63 | When creating DLLs in Windows, you must pass <span class="file">pythonXY.lib</span> to | |
| 64 | the linker. To build two DLLs, spam and ni (which uses C functions | |
| 65 | found in spam), you could use these commands: | |
| 66 | ||
| 67 | <P> | |
| 68 | <div class="verbatim"><pre> | |
| 69 | cl /LD /I/python/include spam.c ../libs/pythonXY.lib | |
| 70 | cl /LD /I/python/include ni.c spam.lib ../libs/pythonXY.lib | |
| 71 | </pre></div> | |
| 72 | ||
| 73 | <P> | |
| 74 | The first command created three files: <span class="file">spam.obj</span>, | |
| 75 | <span class="file">spam.dll</span> and <span class="file">spam.lib</span>. <span class="file">Spam.dll</span> does not contain | |
| 76 | any Python functions (such as <tt class="cfunction">PyArg_ParseTuple()</tt>), but it | |
| 77 | does know how to find the Python code thanks to <span class="file">pythonXY.lib</span>. | |
| 78 | ||
| 79 | <P> | |
| 80 | The second command created <span class="file">ni.dll</span> (and <span class="file">.obj</span> and | |
| 81 | <span class="file">.lib</span>), which knows how to find the necessary functions from | |
| 82 | spam, and also from the Python executable. | |
| 83 | ||
| 84 | <P> | |
| 85 | Not every identifier is exported to the lookup table. If you want any | |
| 86 | other modules (including Python) to be able to see your identifiers, | |
| 87 | you have to say "<tt class="samp">_declspec(dllexport)</tt>", as in "<tt class="samp">void | |
| 88 | _declspec(dllexport) initspam(void)</tt>" or "<tt class="samp">PyObject | |
| 89 | _declspec(dllexport) *NiGetSpamData(void)</tt>". | |
| 90 | ||
| 91 | <P> | |
| 92 | Developer Studio will throw in a lot of import libraries that you do | |
| 93 | not really need, adding about 100K to your executable. To get rid of | |
| 94 | them, use the Project Settings dialog, Link tab, to specify | |
| 95 | <em>ignore default libraries</em>. Add the correct | |
| 96 | <span class="file">msvcrt<var>xx</var>.lib</span> to the list of libraries. | |
| 97 | ||
| 98 | <DIV CLASS="navigation"> | |
| 99 | <div class='online-navigation'> | |
| 100 | <p></p><hr /> | |
| 101 | <table align="center" width="100%" cellpadding="0" cellspacing="2"> | |
| 102 | <tr> | |
| 103 | <td class='online-navigation'><a rel="prev" title="4.2 Differences Between Unix" | |
| 104 | href="dynamic-linking.html"><img src='../icons/previous.png' | |
| 105 | border='0' height='32' alt='Previous Page' width='32' /></A></td> | |
| 106 | <td class='online-navigation'><a rel="parent" title="4. Building C and" | |
| 107 | href="building-on-windows.html"><img src='../icons/up.png' | |
| 108 | border='0' height='32' alt='Up One Level' width='32' /></A></td> | |
| 109 | <td class='online-navigation'><a rel="next" title="5. Embedding Python in" | |
| 110 | href="embedding.html"><img src='../icons/next.png' | |
| 111 | border='0' height='32' alt='Next Page' width='32' /></A></td> | |
| 112 | <td align="center" width="100%">Extending and Embedding the Python Interpreter</td> | |
| 113 | <td class='online-navigation'><a rel="contents" title="Table of Contents" | |
| 114 | href="contents.html"><img src='../icons/contents.png' | |
| 115 | border='0' height='32' alt='Contents' width='32' /></A></td> | |
| 116 | <td class='online-navigation'><img src='../icons/blank.png' | |
| 117 | border='0' height='32' alt='' width='32' /></td> | |
| 118 | <td class='online-navigation'><img src='../icons/blank.png' | |
| 119 | border='0' height='32' alt='' width='32' /></td> | |
| 120 | </tr></table> | |
| 121 | <div class='online-navigation'> | |
| 122 | <b class="navlabel">Previous:</b> | |
| 123 | <a class="sectref" rel="prev" href="dynamic-linking.html">4.2 Differences Between Unix</A> | |
| 124 | <b class="navlabel">Up:</b> | |
| 125 | <a class="sectref" rel="parent" href="building-on-windows.html">4. Building C and</A> | |
| 126 | <b class="navlabel">Next:</b> | |
| 127 | <a class="sectref" rel="next" href="embedding.html">5. Embedding Python in</A> | |
| 128 | </div> | |
| 129 | </div> | |
| 130 | <hr /> | |
| 131 | <span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span> | |
| 132 | </DIV> | |
| 133 | <!--End of Navigation Panel--> | |
| 134 | <ADDRESS> | |
| 135 | See <i><a href="about.html">About this document...</a></i> for information on suggesting changes. | |
| 136 | </ADDRESS> | |
| 137 | </BODY> | |
| 138 | </HTML> |