📄 cross compiling gcc for powerpc.htm
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<![endif]--><!--[if gte mso 9]><xml> <o:DocumentProperties> <o:Author>Sharad Gupta</o:Author> <o:Template>Normal</o:Template> <o:LastAuthor>Sharad Gupta</o:LastAuthor> <o:Revision>8</o:Revision> <o:TotalTime>16</o:TotalTime> <o:Created>2003-11-28T03:39:00Z</o:Created> <o:LastSaved>2003-11-28T03:58:00Z</o:LastSaved> <o:Pages>1</o:Pages> <o:Words>541</o:Words> <o:Characters>3084</o:Characters> <o:Company>Drexel University</o:Company> <o:Lines>25</o:Lines> <o:Paragraphs>7</o:Paragraphs> <o:CharactersWithSpaces>3618</o:CharactersWithSpaces> <o:Version>11.5703</o:Version> </o:DocumentProperties></xml><![endif]--><!--[if gte mso 9]><xml> <w:WordDocument> <w:DisplayBackgroundShape/> <w:ActiveWritingStyle Lang="EN-US" VendorID="64" DLLVersion="131078" NLCheck="1">1</w:ActiveWritingStyle> <w:GrammarState>Clean</w:GrammarState> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument></xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" LatentStyleCount="156"> </w:LatentStyles></xml><![endif]-->
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<DIV class=Section1>
<P class=MsoNormal><B style="mso-bidi-font-weight: normal"><U><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial">Cross
Compiling Gcc for PowerPC<o:p></o:p></SPAN></U></B></P>
<P class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial"><o:p> </o:p></SPAN></B></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial">Download
the latest sources from <A href="ftp://ftp.gnu.org">ftp://<SPAN
class=GramE>ftp.gnu.org </SPAN></A>. <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial">I
tested the build with binutils-2.14, gcc-3.3.2, glibc-2.3.2,
glibc-linuxthreads-2.3.2 and (optionally gdb-6.0). <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial"><BR>1.)<U>
<B style="mso-bidi-font-weight: normal">Binutils</B></U><BR><SPAN
class=GramE>As</SPAN> most of the sites suggest, start by building the toolchain
in separate directories from where you downloaded and unzipped the sources. So,
I do build-binutils, build-gcc and so on... Also, you can specify the PATH you
want the cross-compiled binaries to go with --prefix option. The most convenient
way is to do configure --help to know the oft needed arguments for
configuration. The next step is to configure the binutils for powerpc as
target.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial"><BR></SPAN><SPAN
class=GramE><SPAN
style="FONT-SIZE: 10pt; BACKGROUND: silver; FONT-FAMILY: Courier; mso-bidi-font-family: Tahoma; mso-highlight: silver">mkdir</SPAN></SPAN><SPAN
style="FONT-SIZE: 10pt; BACKGROUND: silver; FONT-FAMILY: Courier; mso-bidi-font-family: Tahoma; mso-highlight: silver">
build-binutils & cd build-binutils<BR>../binutils-2.14/configure
--target=powerpc-linux --prefix=/opt/buckeye/powerpc-linux <BR>make all
install</SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial"><BR><BR>2.)
<B style="mso-bidi-font-weight: normal"><U>Minimal Gcc</U></B><BR><SPAN
class=GramE>After</SPAN> binutils is done, add the cross-compiled binaries to
your PATH by <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial"><BR></SPAN><SPAN
class=GramE><SPAN
style="FONT-SIZE: 10pt; BACKGROUND: silver; FONT-FAMILY: Courier; mso-bidi-font-family: Arial; mso-highlight: silver">export</SPAN></SPAN><SPAN
style="FONT-SIZE: 10pt; BACKGROUND: silver; FONT-FAMILY: Courier; mso-bidi-font-family: Arial; mso-highlight: silver">
PATH=$PATH:/opt/buckeye/powerpc-linux<BR>mkdir build-gcc & cd
build-gcc<BR>../gcc-3.3.2/configure --target=powerpc-linux
--prefix=/opt/buckeye/powerpc-linux --disable-shared --disable-threads \
<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; BACKGROUND: silver; FONT-FAMILY: Courier; mso-bidi-font-family: Arial; mso-highlight: silver">--enable-languages=c
--with-newlib<BR>make all-gcc install-gcc</SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Courier; mso-bidi-font-family: Arial"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial"><BR>You
can very well cross-compile Linux kernel with this minimal gcc, though may not
be able to compile other applications.<BR><BR>3.) <B
style="mso-bidi-font-weight: normal"><U>Glibc</U></B><BR>After the minimal gcc
is done; the next major step is to cross-compile glibc. I have had troubles
compiling glibc in the past what with some of the patches not being applied to
the glibc tree. But after some help from googling, I was able to put the right
combination of arguments in place. Be sure to download glibc-linuxthreads and
unzip it in the glibc source directory. I found out that glibc needs
linuxthreads to compile correctly. It might not be this way but I could not
compile it otherwise. So, here is what to do<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial"><BR></SPAN><SPAN
class=GramE><SPAN
style="FONT-SIZE: 10pt; BACKGROUND: silver; FONT-FAMILY: Courier; mso-bidi-font-family: Arial; mso-highlight: silver">mkdir</SPAN></SPAN><SPAN
style="FONT-SIZE: 10pt; BACKGROUND: silver; FONT-FAMILY: Courier; mso-bidi-font-family: Arial; mso-highlight: silver">
build-glibc & cd build-glibc<BR>tar xv{zj}f
../glibc-linuxthreads-2.3.2.tar.{gb}z{2<SPAN class=GramE>}
..</SPAN>/glibc-2.3.2/<BR><SPAN class=GramE>..</SPAN>/glibc-2.3.2/configure
--prefix=/opt/buckeye/powerpc-linux --target=powerpc-linux --host=powerpc-<SPAN
class=GramE>linux <SPAN
style="mso-spacerun: yes"> </SPAN>\</SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; BACKGROUND: silver; FONT-FAMILY: Courier; mso-bidi-font-family: Arial; mso-highlight: silver">--enable-add-ons=linuxthreads
--with-headers=${Path_to_your_powerpc_linux_kernel_tree}/linuxppc_2_4_devel/<SPAN
class=GramE>include <SPAN
style="mso-spacerun: yes"> </SPAN>\</SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; BACKGROUND: silver; FONT-FAMILY: Courier; mso-bidi-font-family: Arial; mso-highlight: silver">--with-binutils=/opt/buckeye/powerpc-linux/powerpc-linux/bin<BR>make
all install</SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Courier; mso-bidi-font-family: Arial"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial"><BR><SPAN
class=GramE>glibc</SPAN> would give a compile error for
glibc-2.3.2/stdio-common/sscanf.c ... you have to change the parameter
declaration for sscaf function in sscanf.c to <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial"><BR></SPAN><SPAN
class=GramE><SPAN
style="FONT-SIZE: 10pt; BACKGROUND: silver; FONT-FAMILY: Courier; mso-bidi-font-family: Arial; mso-highlight: silver">int</SPAN></SPAN><SPAN
style="FONT-SIZE: 10pt; BACKGROUND: silver; FONT-FAMILY: Courier; mso-bidi-font-family: Arial; mso-highlight: silver"><BR>sscanf
(const char *s, const char *format, ...)</SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Courier; mso-bidi-font-family: Arial"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial"><BR></SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial">It
should be a breeze after that.<BR>It was worth noting that --target option does
not work with glibc, you have to use --host<SPAN
class=GramE>={</SPAN>target-platform}-linux for glibc to work. At my machine,
glibc libraries were installed in /opt/buckeye/powerpc-linux/lib, but gcc would
expect them to be at /opt/buckeye/powerpc-linux/powerpc-linux/lib ... so you
might either make a symlink to the correct path or change the glibc configure
option --libdir to point to the right place. <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial"><BR>4.)
<B style="mso-bidi-font-weight: normal"><U>Complete Gcc</U></B><BR>After glibc
is compiled, you can reconfigure gcc as<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial"><BR></SPAN><SPAN
style="FONT-SIZE: 10pt; BACKGROUND: silver; FONT-FAMILY: Courier; mso-bidi-font-family: Arial; mso-highlight: silver">../gcc-3.3.2/configure
--target=powerpc-linux --prefix=/opt/buckeye/powerpc-linux --enable-shared
--enable-threads \<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; BACKGROUND: silver; FONT-FAMILY: Courier; mso-bidi-font-family: Arial; mso-highlight: silver">--enable-languages=c<BR>make
all install</SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Courier; mso-bidi-font-family: Arial"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial"><BR></SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial">Now
you should have a complete working version of gcc.<BR><BR>5.) <B
style="mso-bidi-font-weight: normal"><U>Gdb</U></B> and other graphical
debuggers like insight<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial"><BR></SPAN><SPAN
class=GramE><SPAN
style="FONT-SIZE: 10pt; BACKGROUND: silver; FONT-FAMILY: Courier; mso-bidi-font-family: Arial; mso-highlight: silver">mkdir</SPAN></SPAN><SPAN
style="FONT-SIZE: 10pt; BACKGROUND: silver; FONT-FAMILY: Courier; mso-bidi-font-family: Arial; mso-highlight: silver">
build-gdb & cd build-gdb<BR>../gdb-6.0/configure --target=powerpc-linux
--enable-sim-powerpc --prefix=/opt/buckeye/gdb (any dir of your choice<SPAN
class=GramE>)</SPAN><BR>make all install</SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Courier; mso-bidi-font-family: Arial"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial"><BR></SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial">--enable-sim-powerpc
builds gdb with inbuilt powerpc instruction set
simulator.<BR><o:p></o:p></SPAN></P>
<DIV class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial">
<HR align=left width="100%" SIZE=2>
</SPAN></DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial"><A
href="mailto:sharadg@ece.drexel.edu">Sharad Gupta</A><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS'; mso-bidi-font-family: Arial"><!-- Created: Fri Nov 14 00:17:49 EST 2003 --><!-- hhmts start -->Last
modified: Thu Nov 27 20:52:41 EST 2003
<o:p></o:p></SPAN></P><!-- hhmts end --></DIV></BODY></HTML>
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