ARM Cortex-M3

Kirspel, Kevin kevin.kirspel at
Mon Feb 7 17:27:40 UTC 2011

I am building a RTEMS port to an STM32 Cortex-M3.  I am building the port for RTEMS version 4.9.  I have built binutils-2.18 and gcc-4.3.2 with thumb2 support (I had to change t-rtems under GCC to output thumb2 multilib).  When configuring RTEMS, the configure script cannot find newlib.  Looking at config.log, I get the following error when checking for newlib:

configure:4709: checking for RTEMS newlib
configure:4736: arm-rtems-gcc --pipe -o conftest -mcpu=cortex-m3 -mthumb -mstructure-size-boundary=8 -O0 -g   conftest.c  >&5
collect2: ld terminated with signal 11 [Segmentation fault]
/usr/local/gcc-4.3.2/lib/gcc/arm-rtems/4.3.2/../../../../arm-rtems/bin/ld: warning: cannot find entry symbol _start; defaulting to 00008000
/usr/local/gcc-4.3.2/lib/gcc/arm-rtems/4.3.2/../../../../arm-rtems/bin/ld: /usr/local/gcc-4.3.2/lib/gcc/arm-rtems/4.3.2/../../../../arm-rtems/lib/libg.a(lib_a-dummysys.o)(not_required_by_rtems): warning: interworking not enabled.
  first occurrence: /home/kirspelk/tmp/ccOqIF65.o: thumb call to arm
/usr/local/gcc-4.3.2/lib/gcc/arm-rtems/4.3.2/../../../../arm-rtems/bin/ld: BFD (GNU Binutils) 2.18 assertion fail ../../binutils-2.18/bfd/elf32-arm.c:6532
/home/kirspelk/tmp/ccOqIF65.o: In function `main':
/home/kirspelk/sandbox/opti_touch/b_rtems_cortexm3/arm-rtems/c/cortexm3/cpukit/conftest.c:12: dangerous relocation:
configure:4743: $? = 1

It looks like configure is looking in the "gcc-4.3.2/arm-rtems/lib" directory to determine a valid newlib library.  The thumb2 newlib library is under "gcc-4.3.2/arm-rtems/lib/thumb/thumb2".  How should I go about correcting this issue?  Is this even the issue or is it something else?

Kevin Kirspel
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