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Update README

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This commit is contained in:
Gregory Nutt 2016-08-03 10:07:20 -06:00
parent 778a8131bf
commit c214aab09f
2 changed files with 13 additions and 21 deletions
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2
TODO
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@ -819,7 +819,7 @@ o Binary loaders (binfmt/)
"Read-Only Data in RAM" at
http://nuttx.org/Documentation/NuttXNxFlat.html#limitations).
The newer 4.6.3compiler generated PC relative relocations to the strings:
The newer 4.6.3 compiler generated PC relative relocations to the strings:
.L2:
.word .LC0-(.LPIC0+4)

32
configs/sam3u-ek/README.txt
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@ -24,24 +24,16 @@ Development Environment
^^^^^^^^^^^^^^^^^^^^^^^
Either Linux or Cygwin on Windows can be used for the development environment.
The source has been built only using the GNU toolchain (see below). Other
toolchains will likely cause problems. Testing was performed using the Cygwin
environment.
The source has been built only using the GNU toolchain. Testing was performed
using the Cygwin environment.
GNU Toolchain Options
^^^^^^^^^^^^^^^^^^^^^
The NuttX make system has been modified to support the following different
toolchain options.
1. The CodeSourcery GNU toolchain,
2. The devkitARM GNU toolchain, ok
4. The NuttX buildroot Toolchain (see below).
All testing has been conducted using the NuttX buildroot toolchain. To use
the CodeSourcery, devkitARM, Atollic, or AtmelStudio GNU toolchain, you simply
need to add one of the following configuration options to your .config (or
defconfig) file:
other toolchains, such as the CodeSourcery, devkitARM, Atollic, or AtmelStudio
GNU toolchain, you simply need to add one of the following configuration options
to your .config (or defconfig) file:
CONFIG_ARMV7M_TOOLCHAIN_CODESOURCERYW=y : CodeSourcery under Windows
CONFIG_ARMV7M_TOOLCHAIN_CODESOURCERYL=y : CodeSourcery under Linux
@ -51,8 +43,8 @@ GNU Toolchain Options
CONFIG_ARMV7M_TOOLCHAIN_GNU_EABIL=y : Generic GCC ARM EABI toolchain for Linux
CONFIG_ARMV7M_TOOLCHAIN_GNU_EABIW=y : Generic GCC ARM EABI toolchain for Windows
If you are not using CONFIG_ARMV7M_TOOLCHAIN_BUILDROOT, then you may also have to modify
the PATH in the setenv.h file if your make cannot find the tools.
You may also have to modify the PATH in the setenv.h file if your make cannot
find the tools.
NOTE about Windows native toolchains
------------------------------------
@ -157,11 +149,11 @@ NuttX EABI "buildroot" Toolchain
details PLUS some special instructions that you will need to follow if you are
building a Cortex-M3 toolchain for Cygwin under Windows.
NOTE: Unfortunately, the 4.6.3 EABI toolchain is not compatible with the
the NXFLAT tools. See the top-level TODO file (under "Binary loaders") for
more information about this problem. If you plan to use NXFLAT, please do not
use the GCC 4.6.3 EABI toochain; instead use the GCC 4.3.3 OABI toolchain.
See instructions below.
NOTE: Unfortunately, the 4.6.3 (and later) GCC toolchain is not compatible
with the the NXFLAT tools. See the top-level TODO file (under "Binary loaders")
for more information about this problem. If you plan to use NXFLAT, please do
not use the GCC 4.6.3 toochain; instead use an older toolchain (such as the GCC
4.3.3 OABI toolchain discussed below).
NuttX OABI "buildroot" Toolchain
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^