URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [doc/] [html/] [user-guide/] [compiling-cpp-app.html] - Rev 510
Go to most recent revision | Compare with Previous | Blame | View Log
<!-- Copyright (C) 2003 Red Hat, Inc. -->
<!-- This material may be distributed only subject to the terms -->
<!-- and conditions set forth in the Open Publication License, v1.0 -->
<!-- or later (the latest version is presently available at -->
<!-- http://www.opencontent.org/openpub/). -->
<!-- Distribution of the work or derivative of the work in any -->
<!-- standard (paper) book form is prohibited unless prior -->
<!-- permission is obtained from the copyright holder. -->
<HTML
><HEAD
><TITLE
>Compiling a C++ Application</TITLE
><meta name="MSSmartTagsPreventParsing" content="TRUE">
<META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
REL="HOME"
TITLE="eCos User Guide"
HREF="ecos-user-guide.html"><LINK
REL="UP"
TITLE="Compiler and Linker Options"
HREF="compiler-and-linker-options.html"><LINK
REL="PREVIOUS"
TITLE="Compiler and Linker Options"
HREF="compiler-and-linker-options.html"><LINK
REL="NEXT"
TITLE="Debugging Techniques"
HREF="debugging-techniques.html"></HEAD
><BODY
CLASS="SECT1"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>eCos User Guide</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="compiler-and-linker-options.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
>Chapter 26. Compiler and Linker Options</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="debugging-techniques.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="COMPILING-CPP-APP">Compiling a C++ Application</H1
><P
>The following command lines demonstrate the
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>minimum</I
></SPAN
> set of options required to
compile and link an <SPAN
CLASS="PRODUCTNAME"
>eCos</SPAN
> program written in C++.
</P
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>Remember that when this manual shows
<B
CLASS="COMMAND"
><TT
CLASS="REPLACEABLE"
><I
>TARGET-</I
></TT
>g++</B
>
you should use the full name of the cross compiler,
e.g. <B
CLASS="COMMAND"
>i386-elf-g++</B
>,
<B
CLASS="COMMAND"
>arm-elf-g++</B
>, or
<B
CLASS="COMMAND"
>sh-elf-g++</B
>. When compiling for the
synthetic Linux target, use the native
<B
CLASS="COMMAND"
>g++</B
> which must have the features
required by <SPAN
CLASS="PRODUCTNAME"
>eCos</SPAN
>.</P
></BLOCKQUOTE
></DIV
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>$ <TT
CLASS="REPLACEABLE"
><I
>TARGET-</I
></TT
>g++ -c -I<TT
CLASS="REPLACEABLE"
><I
>INSTALL_DIR</I
></TT
>/include -fno-rtti -fno-exceptions file.cxx
$ <TT
CLASS="REPLACEABLE"
><I
>TARGET-</I
></TT
>g++ -o program file.o -L<TT
CLASS="REPLACEABLE"
><I
>INSTALL_DIR</I
></TT
>/lib -Ttarget.ld -nostdlib</PRE
></TD
></TR
></TABLE
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>Certain targets may require extra options,
for example the SPARClite architectures require the option
<TT
CLASS="OPTION"
>-mcpu=sparclite</TT
>. Examine the
<TT
CLASS="FILENAME"
><TT
CLASS="REPLACEABLE"
><I
>BASE_DIR</I
></TT
>/packages/targets</TT
>
file or <TT
CLASS="FILENAME"
><TT
CLASS="REPLACEABLE"
><I
>BASE_DIR</I
></TT
>/examples/Makefile</TT
>
or the “Global compiler flags” option
(CYGBLD_GLOBAL_CFLAGS) in your generated
<SPAN
CLASS="PRODUCTNAME"
>eCos</SPAN
> configuration) to see if any extra options are
required, and if so, what they are.</P
><P
>The following command lines use some other options
which are recommended because they use the
<I
CLASS="FIRSTTERM"
>selective linking</I
> feature:</P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>$ <TT
CLASS="REPLACEABLE"
><I
>TARGET-</I
></TT
>g++ -c -I<TT
CLASS="REPLACEABLE"
><I
>INSTALL_DIR</I
></TT
>/include -I. -ffunction-sections -fdata-sections -fno-rtti \
-fno-exceptions -finit-priority -g -O2 file.cxx
$ <TT
CLASS="REPLACEABLE"
><I
>TARGET-</I
></TT
>g++ -o program file.o -W1,--gc-sections -g -O2 -L<TT
CLASS="REPLACEABLE"
><I
>INSTALL_DIR</I
></TT
>/lib -Ttarget.ld -nostdlib</PRE
></TD
></TR
></TABLE
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="compiler-and-linker-options.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="ecos-user-guide.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="debugging-techniques.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Compiler and Linker Options</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="compiler-and-linker-options.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Debugging Techniques</TD
></TR
></TABLE
></DIV
></BODY
></HTML
> Go to most recent revision | Compare with Previous | Blame | View Log