[Buildroot] gcc-4.9.2 with c++ is broken without wchar

[Peter Korsgaard]

>>>>> "Bernd" == Bernd Kuhls <bernd.kuhls at t-online.de> writes:

 > Hi,
 > before sending a patch I would like to post my findings for discussion.
 > A build using this defconfig fails in host-gcc-final-4.9.2:

 > BR2_BINUTILS_VERSION_2_25=y
 > BR2_GCC_VERSION_4_9_X=y
 > BR2_TOOLCHAIN_BUILDROOT_CXX=y

 > make[2]: Entering directory `/home/fli4l/br3/output/build/host-gcc-final-
 > 4.9.2/build/i586-buildroot-linux-uclibc/libcilkrts'
 > [...]
 > In file included from ../../../libcilkrts/runtime/c_reducers.c:55:0:
 > ../../../libcilkrts/include/cilk/reducer_min_max.h: In function 
 > ‘cilk_c_reducer_max_identity_wchar_t’:
 > ../../../libcilkrts/include/cilk/reducer_min_max.h:3157:61: error: 
 > ‘WCHAR_MIN’ undeclared (first use in this function)
 >  CILK_C_REDUCER_MAX_INSTANCE(wchar_t,            wchar_t,    WCHAR_MIN)
 > [...]

 > Apparently c++ support depends on wchar now?

Hmm, odd - What is your config exactly? I cannot reproduce the build
failure here with:

BR2_arm=y
BR2_BINUTILS_VERSION_2_25=y
BR2_GCC_VERSION_4_9_X=y
BR2_TOOLCHAIN_BUILDROOT_CXX=y

-- 
Bye, Peter Korsgaard