<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial">Ok, that makes sense!<br><br>That is to say, I don't need a makefile (in which to specify the path to kernel) to compile it. Just a clang command with some option will do it, right?<br><br><div>--<br><div>
<div>
<div><font color="#c0c0c0" size="2">
<div><font color="#c0c0c0"><font size="3"> <span style="COLOR: #000000"> ×£ºÃ£¡</span></font></font></div><span style="COLOR: #000000">
<div> </div>
<div><font size="3"> Õç¿</font></div>
<div>
<div><font color="#c0c0c0"><font size="3">------------------------------------------------------------------------------------------------------</font></font></div></div>
<div><font color="#c0c0c0"><font size="3">2012-04-12</font></font></div></span></font></div>
<div><font color="#c0c0c0"><font size="3">------------------------------------------------------------------------------------------------------</font></font></div>
<div><font color="#c0c0c0"><font size="3">Name: Õç¿(ZhenKai)<br>Homepage:http://www.renren.com/262729393</font></font></div>
<div><font color="#c0c0c0"><font size="3">Email: </font><a href="mailto:zhenkaixd@126.com" target="_blank" _listener="1901"><font color="#0066cc" size="3">zhenkaixd@126.com</font></a><font size="3"> or <a href="mailto:846227103@qq.com">846227103@qq.com</a></font></font></div>
<div><font color="#c0c0c0" size="3">TEL: 15810729006(Beijing)<br>Address: Room I-406, Central Building, Tsinghua University, Beijing, China. 100084.</font></div></div></div></div><div id="divNeteaseMailCard"></div><br>At 2012-04-12 09:31:43,"John Criswell" <criswell@illinois.edu> wrote:<br> <blockquote id="isReplyContent" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
On 4/11/12 8:25 PM, 15102925731 wrote:
<blockquote cite="mid:4f9b730e.2280a.136a427ad44.Coremail.zhenkaixd@126.com" type="cite">
<div style="line-height: 1.7; color: rgb(0, 0, 0); font-size:
14px; font-family: arial;">Yeah, but I tried that command and
error message was generated:<br>
<br>
hellomodule.c:1:10: fatal error: 'linux/init.h' file not found<br>
#include <linux/init.h><br>
^<br>
1 error generated.<br>
<br>
how to solve this problem??<br>
</div>
</blockquote>
<br>
Well, you do have to include all the -I and -D options so that clang
can find the Linux kernel header files. I don't know off hand what
those specific options are, but the easiest thing to do is to build
the kernel, grab the gcc command line that compiles your .c file to
a .o file, and then replace gcc with clang and add the -emit-llvm
option to the command line.<br>
<br>
-- John T.<br>
<br>
<blockquote cite="mid:4f9b730e.2280a.136a427ad44.Coremail.zhenkaixd@126.com" type="cite">
<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><br>
Thanks!<br>
<br>
<div>--<br>
<div>
<div>
<div><font color="#c0c0c0" size="2">
<div><font color="#c0c0c0"><font size="3"> <span style="COLOR: #000000"> ×£ºÃ£¡</span></font></font></div>
<span style="COLOR: #000000">
<div> </div>
<div><font size="3"> Õç¿</font></div>
<div>
<div><font color="#c0c0c0"><font size="3">------------------------------------------------------------------------------------------------------</font></font></div>
</div>
<div><font color="#c0c0c0"><font size="3">2012-04-12</font></font></div>
</span></font></div>
<div><font color="#c0c0c0"><font size="3">------------------------------------------------------------------------------------------------------</font></font></div>
<div><font color="#c0c0c0"><font size="3">Name:
Õç¿(ZhenKai)<br>
Homepage:<a class="moz-txt-link-freetext" href="http://www.renren.com/262729393">http://www.renren.com/262729393</a></font></font></div>
<div><font color="#c0c0c0"><font size="3">Email: </font><a moz-do-not-send="true" href="mailto:zhenkaixd@126.com" target="_blank" _listener="1901"><font color="#0066cc" size="3">zhenkaixd@126.com</font></a><font size="3"> or <a moz-do-not-send="true" href="mailto:846227103@qq.com">846227103@qq.com</a></font></font></div>
<div><font color="#c0c0c0" size="3">TEL:
15810729006(Beijing)<br>
Address: Room I-406, Central Building, Tsinghua
University, Beijing, China. 100084.</font></div>
</div>
</div>
</div>
<br>
At 2012-04-11
23:48:07,"John Criswell" <a class="moz-txt-link-rfc2396E" href="mailto:criswell@illinois.edu"><criswell@illinois.edu></a> wrote:<br>
<blockquote id="isReplyContent" style="PADDING-LEFT: 1ex;
MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"> On
4/10/12 10:11 PM, 15102925731 wrote:
<blockquote cite="mid:17dd7b99.6c38.1369f62c87a.Coremail.zhenkaixd@126.com" type="cite">
<div style="line-height: 1.7; color: rgb(0, 0, 0);
font-size: 14px; font-family: arial;">It's actually is .c
file. <br>
I just want firstly to compile helloworldmodule.c into
helloworldmodule.bc.<br>
Then I run a LLVM pass on it to do some optimization, and
then I compile the modified .bc file into .ko file.<br>
<br>
So, could you tell me how to compile helloworldmodule.c
into helloworldmodule.bc? I think it's not the same
command <b>"clang -O3 -emit-llvm hello.c -c -o hello.bc".
</b>Because it is a device driver that will be at last
compiled to be .ko file.<br>
</div>
</blockquote>
<br>
No, that's exactly how you would do it, although you might
need to use GCC + Dragonegg instead of clang because the Linux
3.0 kernel doesn't compile with Clang out-of-the-box (at least
for me, anyway).<br>
<br>
-- John T.<br>
<br>
<blockquote cite="mid:17dd7b99.6c38.1369f62c87a.Coremail.zhenkaixd@126.com" type="cite">
<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><br>
Thank you!<br>
<br>
<div>--<br>
<div>
<div>
<div><font color="#c0c0c0" size="2">
<div><font color="#c0c0c0"><font size="3"> <span style="COLOR: #000000"> ×£ºÃ£¡</span></font></font></div>
<span style="COLOR: #000000">
<div> </div>
<div><font size="3"> Õç¿</font></div>
<div>
<div><font color="#c0c0c0"><font size="3">------------------------------------------------------------------------------------------------------</font></font></div>
</div>
<div><font color="#c0c0c0"><font size="3">2012-04-11</font></font></div>
</span></font></div>
<div><font color="#c0c0c0"><font size="3">------------------------------------------------------------------------------------------------------</font></font></div>
<div><font color="#c0c0c0"><font size="3">Name:
Õç¿(ZhenKai)<br>
Homepage:<a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://www.renren.com/262729393">http://www.renren.com/262729393</a></font></font></div>
<div><font color="#c0c0c0"><font size="3">Email: </font><a moz-do-not-send="true" href="mailto:zhenkaixd@126.com" target="_blank" _listener="1901"><font color="#0066cc" size="3">zhenkaixd@126.com</font></a><font size="3"> or <a moz-do-not-send="true" href="mailto:846227103@qq.com">846227103@qq.com</a></font></font></div>
<div><font color="#c0c0c0" size="3">TEL:
15810729006(Beijing)<br>
Address: Room I-406, Central Building, Tsinghua
University, Beijing, China. 100084.</font></div>
</div>
</div>
</div>
<br>
ÔÚ 2012-04-11 09:56:21£¬"Justin Holewinski" <a moz-do-not-send="true" class="moz-txt-link-rfc2396E" href="mailto:justin.holewinski@gmail.com"><justin.holewinski@gmail.com></a>
дµÀ£º<br>
<blockquote id="isReplyContent" style="PADDING-LEFT: 1ex;
MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"><br>
<div class="gmail_quote">2012/4/10 15102925731 <span dir="ltr"><<a moz-do-not-send="true" href="mailto:zhenkaixd@126.com">zhenkaixd@126.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="line-height:1.7;font-size:14px;font-family:arial"> Hi,
my friends<br>
<br>
<br>
I know there is a difference between compiling a
linux module and a simple helloworld programme.<br>
If I compile a helloworld.c file, the command is <br>
<b>"clang -O3 -emit-llvm hello.c -c -o hello.bc"</b><br>
But what the command should be if I want to
compile a linux module into a .bc file? (I know it
may be an easy question to you guys, but I really
don't know where to find the answer on <a moz-do-not-send="true" href="http://llvm.org" target="_blank">llvm.org</a>.)<br>
</div>
</blockquote>
<div><br>
</div>
<div>What do you mean by linux module? A shared
library (.so)? A kernel module (.ko)?</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="line-height:1.7;font-size:14px;font-family:arial"><br>
Thank you!<br>
<br>
<br>
<br>
<br>
<div>--<br>
<div>
<div>
<div><font color="#c0c0c0">
<div><font color="#c0c0c0"><font size="3"> <span style="">
×£ºÃ£¡</span></font></font></div>
<span style="">
<div> </div>
<div><font size="3"> Õç¿</font></div>
<div>
<div><font color="#c0c0c0"><font size="3">------------------------------------------------------------------------------------------------------</font></font></div>
</div>
<div><font color="#c0c0c0"><font size="3">2012-04-11</font></font></div>
</span></font></div>
<div><font color="#c0c0c0"><font size="3">------------------------------------------------------------------------------------------------------</font></font></div>
<div><font color="#c0c0c0"><font size="3">Name:
Õç¿(ZhenKai)<br>
Homepage:<a moz-do-not-send="true" href="http://www.renren.com/262729393" target="_blank">http://www.renren.com/262729393</a></font></font></div>
<div><font color="#c0c0c0"><font size="3">Email: </font><a moz-do-not-send="true" href="mailto:zhenkaixd@126.com" target="_blank"><font color="#0066cc" size="3">zhenkaixd@126.com</font></a><font size="3"> or <a moz-do-not-send="true" href="mailto:846227103@qq.com" target="_blank">846227103@qq.com</a></font></font></div>
<div><font color="#c0c0c0" size="3">TEL:
15810729006(Beijing)<br>
Address: Room I-406, Central Building,
Tsinghua University, Beijing, China.
100084.</font></div>
</div>
</div>
</div>
</div>
<br>
<br>
<span title="neteasefooter"><span></span></span><br>
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-- <br>
<br>
<div>Thanks,</div>
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<div>Justin Holewinski</div>
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