[LLVMdev] configure with clang vs gcc

[Eric Christopher]

Have you looked at the compile lines during the configure? Is it using
the system includes/libraries when building with clang rather than the
target system?

-eric

On Mon, Feb 24, 2014 at 4:24 PM, reed kotler <rkotler at mips.com> wrote:
> On 02/24/2014 04:19 PM, Eric Christopher wrote:
>
> On Mon, Feb 24, 2014 at 4:14 PM, reed kotler <rkotler at mips.com> wrote:
>
> I'm trying to build a native hosted mips compiler on ubuntu x86.
>
> When I run configure with clang/llvm as the compiler, configure thinks that
> zlib is present and that valgrind is.
>
> But later on the make it cannot find zlib.h. If I tell it to not do
> compression, then it does not look for
> zlib.h but dies looking for valgrind, even if I tell it to disable-valgrind.
>
> If I configure using gcc-mips, it decides on it's own that zlib.h is not
> available.
> It also decides that valgrind is not available.
>
> Why the difference?
>
> How are you configuring?
>
> -eric
>
>
> (You can see our wiki page
> https://dmz-portal.mips.com/wiki/Build_mips_clang_llvm )
>
> Basically:
>
> $ OPT="-target mipsel-linux-gnu -mips32r2 -gcc-toolchain ${MIPS}"
>
>
> $ $CLANG_SRC/configure \
>     --prefix=$CLANG_INSTALL \
>     --build=i686-pc-linux-gnu \
>     --host=mipsel-linux-gnu \
>     --enable-optimized \                  # turn on optimization
>     "--with-extra-options=${OPT}" \
>     "--with-extra-ld-options=${OPT}" \
>     CC=$CLANG_TC/bin/clang \
>     CXX=$CLANG_TC/bin/clang++ \
>     RANLIB=$MIPS/bin/mips-linux-gnu-ranlib \
>     AR=$MIPS/bin/mips-linux-gnu-ar \
>     build_alias=i686-unknown-linux-gnu host_alias=mipsel-linux-gnu
>
>
> Any ideas?
>
> Reed
>
>
>
>
>
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