On powerpc 11.0-CURRENT CROSS_TOOLCHAIN=powerpc64-gcc fails: clang-tblgen use attempted before it exists

[Dimitry Andric]

On 16 Mar 2015, at 09:02, Mark Millard <markmi at dsl-only.net> wrote:
> 
> I found why gcc 4.2.1's cc1plus was getting -std=c++11 for the CROSS_TOOLCHAIN=powerpc64-gcc compiles that involve WITH_CLANG= . (WITHOUT_CLANG= does not get the "unrecognized" notices.) There is a global assignment to CXXFLAGS for all compilers whenever clang.build.mk is in use (showing my experimental change...):
> 
> # svnlite diff /usr/srcC/lib/clang/clang.build.mk
> Index: /usr/srcC/lib/clang/clang.build.mk
> ===================================================================
> --- /usr/srcC/lib/clang/clang.build.mk	(revision 279514)
> +++ /usr/srcC/lib/clang/clang.build.mk	(working copy)
> @@ -34,8 +34,8 @@
> CFLAGS+=	-DLLVM_DEFAULT_TARGET_TRIPLE=\"${TARGET_TRIPLE}\" \
> 		-DLLVM_HOST_TRIPLE=\"${BUILD_TRIPLE}\" \
> 		-DDEFAULT_SYSROOT=\"${TOOLS_PREFIX}\"
> -CXXFLAGS+=	-std=c++11 -fno-exceptions -fno-rtti
> -CXXFLAGS.clang+= -stdlib=libc++
> +CXXFLAGS+=	-fno-exceptions -fno-rtti
> +CXXFLAGS.clang+= -std=c++11 -stdlib=libc++
> 
> .PATH:	${LLVM_SRCS}/${SRCDIR}
> 
> It may be that the "-fno-exceptions -fno-rtti" are also suspect for being not limited to clang contexts.

This is incorrect.  Clang needs -std=c++11, otherwise it cannot compile.

I suspect you also need WITHOUT_CLANG_BOOTSTRAP (and WITHOUT_GCC_BOOTSTRAP, probably).

-Dimitry

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