Re: c++ includes not getting searched for correctly?

[Xianghua Xiao <xiaoxianghua at gmail dot com>]

On Thu, Oct 7, 2010 at 8:47 AM, Xianghua Xiao <xiaoxianghua@gmail.com> wrote:
> On Thu, Oct 7, 2010 at 1:31 AM, Bryan Hundven <bryanhundven@gmail.com> wrote:
>> On Tue, Oct 5, 2010 at 9:01 AM, Anthony Foiani <anthony.foiani@gmail.com> wrote:
>>> On Mon, Oct 4, 2010 at 9:13 PM, Ralf Corsepius <rc040203@freenet.de> wrote:
>>>> On 10/01/2010 10:47 PM, Anthony Foiani wrote:
>>>>> The upshot is that the final cross-compiler looks in the wrong place
>>>>> for c++ headers; it ends up looking in
>>>>>
>>>>> Â TARGET/lib/gcc/TARGET/4.5.1/include/
>>>>> Â TARGET/lib/gcc/TARGET/4.5.1/include-fixed/
>>>>> Â TARGET/TARGET/sys-root/usr/include/
>>>>
>>>> These are the correct locations.
>>>>
>>>>> When it should be looking in:
>>>>>
>>>>> Â TARGET/TARGET/sys-root/usr/include/c++/4.5.1/
>>>>
>>>> And this would be wrong.
>>
>> I don't understand. Could you kindly explain more about why this is wrong?
>>
>>> Ok, I think I see the reasoning behind this: things like "stdio.h" in
>>> /usr/include are a part of libc, while the g++ headers are properly a
>>> part of GCC itself. ÂOk.
>>>
>>> So how do I get libstdc++ installed into one of those proper search
>>> directories? ÂHere's where they ended up:
>>>
>>> [tony@fedora12-64 xtools]$ find . -name '*stdc++*' -print
>>> ./powerpc-e500v2-linux-gnuspe/sys-root/lib/libstdc++.so
>>> ./powerpc-e500v2-linux-gnuspe/sys-root/lib/libstdc++.so.6.0.14
>>> ./powerpc-e500v2-linux-gnuspe/sys-root/lib/libstdc++.la
>>> ./powerpc-e500v2-linux-gnuspe/sys-root/lib/libstdc++.so.6.0.14-gdb.py
>>> ./powerpc-e500v2-linux-gnuspe/sys-root/lib/libstdc++.a
>>> ./powerpc-e500v2-linux-gnuspe/sys-root/lib/libstdc++.so.6
>>> ./powerpc-e500v2-linux-gnuspe/sys-root/usr/include/c++/4.5.1/powerpc-e500v2-linux-gnuspe/bits/stdc++.h
>>>
>>> [tony@fedora12-64 xtools]$ find . -name 'iostream' -print
>>> ./powerpc-e500v2-linux-gnuspe/sys-root/usr/include/c++/4.5.1/iostream
>>>
>>> Config file attached.
>>>
>>> Thanks,
>>> Tony
>>>
>>> --
>>> For unsubscribe information see http://sourceware.org/lists.html#faq
>>>
>>
>> I have the same issue on a ppc (e500v2), and armeb (armv5te), and this
>> x86 toolchain built with crosstool-ng (gcc-4.5.1, eglibc-trunk).
>>
>> g++test.cpp:
>> ----------------------8<---------------------
>> #include <iostream>
>> using namespace std;
>> int main( int argc, char **argv )
>> {
>> Â Âcout << "Hello World" << endl;
>> Â Âreturn 0;
>> }
>> ----------------------8<---------------------
>>
>> $ /home/bryan/x-tools/i686-nptl-linux-gnu/bin/i686-nptl-linux-gnu-g++
>> -o g++test g++test.cpp
>> g++test.cpp:1:20: fatal error: iostream: No such file or directory
>> compilation terminated.
>>
>> $ /home/bryan/x-tools/i686-nptl-linux-gnu/bin/i686-nptl-linux-gnu-gcc
>> -print-search-dirs
>> install: /home/bryan/x-tools/i686-nptl-linux-gnu/lib/gcc/i686-nptl-linux-gnu/4.5.1/
>> programs: =/home/bryan/x-tools/i686-nptl-linux-gnu/libexec/gcc/i686-nptl-linux-gnu/4.5.1/:/home/bryan/x-tools/i686-nptl-linux-gnu/libexec/gcc/i686-nptl-linux-gnu/4.5.1/:/home/bryan/x-tools/i686-nptl-linux-gnu/libexec/gcc/i686-nptl-linux-gnu/:/home/bryan/x-tools/i686-nptl-linux-gnu/lib/gcc/i686-nptl-linux-gnu/4.5.1/:/home/bryan/x-tools/i686-nptl-linux-gnu/lib/gcc/i686-nptl-linux-gnu/:/home/bryan/x-tools/i686-nptl-linux-gnu/lib/gcc/i686-nptl-linux-gnu/4.5.1/../../../../i686-nptl-linux-gnu/bin/i686-nptl-linux-gnu/4.5.1/:/home/bryan/x-tools/i686-nptl-linux-gnu/lib/gcc/i686-nptl-linux-gnu/4.5.1/../../../../i686-nptl-linux-gnu/bin/
>> libraries: =/home/bryan/x-tools/i686-nptl-linux-gnu/lib/gcc/i686-nptl-linux-gnu/4.5.1/:/home/bryan/x-tools/i686-nptl-linux-gnu/lib/gcc/i686-nptl-linux-gnu/4.5.1/../../../../i686-nptl-linux-gnu/lib/i686-nptl-linux-gnu/4.5.1/:/home/bryan/x-tools/i686-nptl-linux-gnu/lib/gcc/i686-nptl-linux-gnu/4.5.1/../../../../i686-nptl-linux-gnu/lib/:/home/bryan/x-tools/i686-nptl-linux-gnu/i686-nptl-linux-gnu//sys-root/lib/i686-nptl-linux-gnu/4.5.1/:/home/bryan/x-tools/i686-nptl-linux-gnu/i686-nptl-linux-gnu//sys-root/lib/:/home/bryan/x-tools/i686-nptl-linux-gnu/i686-nptl-linux-gnu//sys-root/usr/lib/i686-nptl-linux-gnu/4.5.1/:/home/bryan/x-tools/i686-nptl-linux-gnu/i686-nptl-linux-gnu//sys-root/usr/lib/
>>
>>
>> I attached my x86.config and output of -dumpspecs
>>
>> --Bryan
>>
>> --
>> For unsubscribe information see http://sourceware.org/lists.html#faq
>>
>
print-seach-dir is really for binaries and libraries, for header
files, 'g++ -v' and see wherever its with-sysroot(or
with-cxx-include-dir) is located, i found iostream under
usr/include/c++ just fine with crosstool-ng 1.8.1 for both x86 and
powerpc installations.

xianghua

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