scripts/build/arch/arm.sh
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Jul 17 22:43:07 2011 +0200 (2011-07-17)
changeset 2893 a8a65758664f
parent 1597 fa8f3ab724f9
child 3158 1161ea79915b
permissions -rw-r--r--
cc/gcc: do not use the core pass-2 to build the baremetal compiler

In case we build a baremetal compiler, use the standard passes:
- core_cc is used to build the C library;
- as such, it is meant to run on build, not host;
- the final compiler is meant to run on host;

As the current final compiler step can not build a baremetal compiler,
call the core backend from the final step.

NB: Currently, newlib is built during the start_files pass, so we have
to have a core compiler by then... Once we can build the baremetal
compiler from the final cc step, then we can move the newlib build to
the proper step, and then get rid of the core pass-1 static compiler...

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
     1 # Compute ARM-specific values
     2 
     3 CT_DoArchTupleValues() {
     4     # The architecture part of the tuple:
     5     CT_TARGET_ARCH="${CT_ARCH}${target_endian_eb}"
     6 
     7     # The system part of the tuple:
     8     case "${CT_LIBC},${CT_ARCH_ARM_EABI}" in
     9         *glibc,y)   CT_TARGET_SYS=gnueabi;;
    10         uClibc,y)   CT_TARGET_SYS=uclibcgnueabi;;
    11         *,y)        CT_TARGET_SYS=eabi;;
    12     esac
    13 
    14     # Set the default instruction set mode
    15     case "${CT_ARCH_ARM_MODE}" in
    16         arm)    ;;
    17         thumb)
    18             CT_ARCH_CC_CORE_EXTRA_CONFIG="--with-mode=thumb"
    19             CT_ARCH_CC_EXTRA_CONFIG="--with-mode=thumb"
    20 #            CT_ARCH_TARGET_CFLAGS="-mthumb"
    21             ;;
    22     esac
    23 
    24     if [ "${CT_ARCH_ARM_INTERWORKING}" = "y" ]; then
    25         CT_ARCH_TARGET_CFLAGS+=" -mthumb-interwork"
    26     fi
    27 }