Re: [toplevel] Overhaul detection of target compilers

[Paul Brook <paul at codesourcery dot com>]

> 2005-07-14 ?Paolo Bonzini ?<bonzini@gnu.org>
>
> ????????* configure.in (CC_FOR_TARGET, CXX_FOR_TARGET, GCJ_FOR_TARGET,
> ????????GCC_FOR_TARGET, RAW_CXX_FOR_TARGET, GFORTRAN_FOR_TARGET): Find
> ????????them with NCN_STRICT_CHECK_TARGET_TOOL, like the other target
> ????????tools; remove code to manually set them.
> ????????(Target tools): Look in the environment for them.
> ????????* Makefile.tpl (CC_FOR_TARGET, CXX_FOR_TARGET, GCJ_FOR_TARGET,
> ????????GCC_FOR_TARGET, RAW_CXX_FOR_TARGET, GFORTRAN_FOR_TARGET): Redefine.
> ????????(AS_FOR_TARGET, LD_FOR_TARGET, NM_FOR_TARGET): Look into gcc
> ????????build directory.
> ????????(CONFIGURED_CC_FOR_TARGET, CONFIGURED_CXX_FOR_TARGET,
> ????????CONFIGURED_GCJ_FOR_TARGET, CONFIGURED_GCC_FOR_TARGET,
> ????????CONFIGURED_GFORTRAN_FOR_TARGET, USUAL_CC_FOR_TARGET,
> ????????USUAL_CXX_FOR_TARGET, USUAL_GCJ_FOR_TARGET, USUAL_GCC_FOR_TARGET,
> ????????USUAL_RAW_CXX_FOR_TARGET, USUAL_GFORTRAN_FOR_TARGET): New.
> ????????(CXX_FOR_TARGET_FOR_RECURSIVE_MAKE,
> ????????RAW_CXX_FOR_TARGET_FOR_RECURSIVE_MAKE, RECURSE_FLAGS): Delete.
> ????????* configure: Regenerate.
> ????????* Makefile.in: Regenerate.

This breaks newlib cross builds. 

make[4]: arm-unknown-eabi-cc: Command not found
make[4]: *** [dummy.o] Error 127
make[4]: Leaving directory 
`/home/paul/arm/newlib/obj-eabi/arm-unknown-eabi/newlib/libc/argz'

It appears that toplevel configure is setting CONFIGURED_CC_FOR_TARGET to 
arm-unknown-eabi-cc even though this binary doesn't exist (only -gcc does), 
and this value then works its way up to $(CC) in newlib/

Paul