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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1522 42af7a65-404d-4744-a932-0658087f49c3
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patacongo
2009-02-24 01:28:17 +00:00
parent ef0f434bb1
commit 94d4825055
1 changed files with 34 additions and 2 deletions
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configs/skp16c26/README.txt
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@@ -1,8 +1,40 @@
configs/skp16c26/README.txt configs/skp16c26/README.txt
^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^
BUILDING THE R8C/M16C/M32C GNU TOOLCHAIN 1. The buildroot package can be used to build an M16C toolchain. The toolchain
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ buildroot can be downloaded from misc/buildroot in the NuttX CVS. Insructions
for building the toolchain are provided below.
However, the target cannot be built because the GNU m16c-elf-ld link fails with
the following message:
m32c-elf-ld: BFD (GNU Binutils) 2.19 assertion fail /home/Owner/projects/nuttx/buildroot/toolchain_build_m32c/binutils-2.19/bfd/elf32-m32c.c:482
Where the reference line is:
/* If the symbol is out of range for a 16-bit address,
we must have allocated a plt entry. */
BFD_ASSERT (*plt_offset != (bfd_vma) -1);
No workaround is known at this time. This is a show stopper for M16C.
2. A supported version of the M16C toolchain is available here:
http://www.kpitgnutools.com/index.php
This download is free but requires registration. Unfortunately, this v0901 of
this toolchain shows the same behavior:
c:\Hew3\Tools\KPIT Cummins\GNUM16CM32C-ELF\v0901\m32c-elf\bin\m32c-elf-ld.exe: BFD (GNU Binutils) 2.19-GNUM16CM32C_v0901 assertion fail /home/kpit/fsfsrc/binutils-2.19/bfd/elf32-m32c.c:482
It is possible that this error messasge my be telling me -- a very roundabout way --
that I have exceeded the FLASH region, but I think that unlikely (it is difficult
to know if the link does not complete gracefully).
BUILDING THE R8C/M16C/M32C GNU TOOLCHAIN USING BUILDROOT
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
NOTE: See the toolchain issues above -- you may not want to waste your time.
1. CD to the correct directory. 1. CD to the correct directory.