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update README for gcc-arm-embedded toolchain

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NIIBE Yutaka 2012-07-20 13:12:51 +09:00
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@ -317,7 +317,7 @@ You need GNU toolchain and newlib for 'arm-none-eabi' target.
See http://github.com/esden/summon-arm-toolchain/ (which includes fix
of binutils-2.21.1) for preparation of GNU Toolchain for
'arm-none-eabi' target.
'arm-none-eabi' target. This is for GCC 4.5.
# Note that we need to link correct C library (for string functions).
# For this purpose, Makefile.in contains following line:
@ -333,6 +333,13 @@ of binutils-2.21.1) for preparation of GNU Toolchain for
# -mno-thumb-interwork option. This means that you should not
# link C library which contains ARM (not Thumb) code.
Recently, there is "gcc-arm-embedded" project. See:
https://launchpad.net/gcc-arm-embedded/
It is based on GCC 4.6. For version 4.6-2012-q2-update, you'd
need "-O3 -s" instead of "-O2".
Change directory to `src':