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Usage

Download the binary distribution published by Royal Marketing for your platform and decompress the file in an appropriate place. Add this location ('bin' subdirectory) to your PATH environment variable and you are ready to go.

When compiling, remember to specify the target chipset with the "-mcpu" switch with your custom building options. (Actually, you should also specify linker scripts to match your architecture in order to build useful images.)

Example

  1. arm-elf-gcc -mcpu=arm7tdmi -mthumb -O2 -g -c hello_world.c
  2. arm-elf-gcc -mcpu=arm7tdmi -mthumb -o hello_world hello_world.o -lc

Documentation

Local documents in PDF format.

Build process

GCC's t-arm-elf file was updated to enable support for the following options:

  • marm/mthumb (arm or thumb code generation)
  • mlittle-endian/mbig-endian (little or big endian architectures)
  • mhard-float/msoft-float (hardware or software fpu instructions)
  • mno-thumb-interwork/mthumb-interwork (arm-thumb modes interworking)
  • mcpu=arm7 (arm7 targets without hardware multiply)

The disabled options were mapcs-32/mapcs-26 (for old ARM machines with 26-bit program counters) and fno-leading-underscore/fleading-underscore (non-ELF library function format).

The following steps and configuration switches were used in the compilation process:

  1. cd [binutils-build]
  2. [binutils-source]/configure --target=arm-elf --prefix=[toolchain-prefix] --enable-interwork --enable-multilib
  3. make all install
  4. export PATH="$PATH:[toolchain-prefix]/bin"
  5. cd [gcc-build]
  6. [gcc-source]/configure --target=arm-elf --prefix=[toolchain-prefix] --enable-interwork --enable-multilib --enable-languages="c,c++" --with-newlib --with-headers=[newlib-source]/newlib/libc/include
  7. make all-gcc install-gcc
  8. cd [newlib-build]
  9. [newlib-source]/configure --target=arm-elf --prefix=[toolchain-prefix] --enable-interwork --enable-multilib
  10. make all install
  11. cd [gcc-build]
  12. make all install
  13. cd [gdb-build]
  14. [gdb-source]/configure --target=arm-elf --prefix=[toolchain-prefix] --enable-interwork --enable-multilib
  15. make all install

ARM is a registered trademark of ARM Ltd. | Apple and Mac OS are registered trademarks of Apple Computer, Inc. | Linux is a registered trademark of Linus Torvalds. | Cygwin is a registered trademark of Red Hat, Inc. | Provided sources are covered by the GNU GPL and/or LGPL licenses. | GNUARM toolchain and this page maintained by Pablo Bleyer Kocik [pbleyer at embedded dot cl]