Mercurial > hg > index.cgi
changeset 196:83bb31ca8b6a
Elaborated the readme for the gcc6809 patch
As a result of feedback from pulkomandy@pulkomandy.tk, added additional text
to readme to clarify several aspects of the instructions and the nature of
the gcc6809 patch as compared to the "official" gcc6809.
author | William Astle <lost@l-w.ca> |
---|---|
date | Thu, 15 Mar 2012 09:26:24 -0600 |
parents | 17bd59f045af |
children | 82957c407577 |
files | extra/README |
diffstat | 1 files changed, 23 insertions(+), 4 deletions(-) [+] |
line wrap: on
line diff
--- a/extra/README Sun Mar 11 16:05:54 2012 -0600 +++ b/extra/README Thu Mar 15 09:26:24 2012 -0600 @@ -22,17 +22,36 @@ The last number after the dash is a patch level for the specific patch. These are different to the official gcc6809 releases in the following ways. First, all the source for as-6809 is removed. Also, the special "helper" -makefile and directory is removed. Also, as of this writing, the -distribution side for gcc6809 has been down for months and the latest -release was for gcc 4.3.4 which does not build on 64 bit linux. +makefile and directory is removed. Also, as of this writing, the latest +"official" release was for gcc 4.3.4 which does not build on 64 bit linux. +In the event you have used the "official" gcc6809 with the default as6809 +assembler that comes with it, you should be aware that while lwasm is mostly +compatible with it syntax wise, there are differences, particularly in +pseudo operations and source line syntax (most notably that you must have +whitespace preceeding assembler directives and instructions). You will +likely not run into these unless you are using inline asm. Refer to the +lwtools documentation for the specific line format required by lwasm. + +It is worth noting that neither gcc6809 nor lwtools comes with a standard C +library. + +It is also worth noting that for many projects, it will be more flexible to +invoke lwlink directly rather than using the ld script or gcc as a front +end. See the lwtools documentation for details on using lwlink. To use these scripts, you really need to understand how to build a gcc as a cross compiler. The basics are that you put the as, ld, and ar scripts whereever you plan to put your cross-development binaries. Then, when building the cross compiler, you tell it where the scripts are. -The following work +Please note that the following recipe is an example only. If you are +planning to install multiple instances of gcc6809 for different targets, you +will most certainly need to modify the steps below. Providing a complete +understanding of building a gcc toolchain for cross compilation is well +beyond the scope of this document. + +The following works for a single installation. 1. Install the ar, as, and ld scripts named m6809-unknown-{as,ar,ld} in a directory in your path, say /usr/local/coco/bin/.