Re: Building gcc 5.2.1 on AIX 7.2

[Gabriel VLASIU <gabriel at vlasiu dot net>]

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On Mon, 11 Jan 2016, Jonathan Wakely wrote:

> Why 5.2.1 and not the 5.3 release?
Project requirement. Same gcc on linux && aix. Since we use devtoolset 4 
(gcc 5.2.1) on RHEL 6 we have to run the same version on AIX too.

> Don't build in the source directory.
I don't. There is a separate directory from where we run configure:
tar -xjf gcc-5.2.1-20151104.tar.bz2
mkdir gcc-build-5.2.1
cd gcc-build-5.2.1
../gcc-5.2.1-20151104/configure ....
gmake ...

> It shouldn't be necessary, but you might be able to work around this
> by changing the #include at gcc/system.h:201 to
> 
> #ifdef __cplusplus
> extern "C++" {
> # include <string>
> }
> #endif
Works for gengenrtl.c but fail for genmodes.c. And this time is weird 
since system.h is already patched:

/home/gabriel/work/rpm/BUILD/gcc-build-5.2.1/./prev-gcc/xg++ 
- -B/home/gabriel/work/rpm/BUILD/gcc-build-5.2.1/./prev-gcc/ 
- -B/opt/freeware/powerpc-ibm-aix7.1.0.0/bin/ -nostdinc++ -B/home/
gabriel/work/rpm/BUILD/gcc-build-5.2.1/prev-powerpc-ibm-aix7.1.0.0/libstdc++-v3/src/.libs 
- -B/home/gabriel/work/rpm/BUILD/gcc-build-5.2.1/prev-powerpc-ibm-aix7.1.0.0/libstdc++-v3/libsup
c++/.libs  -isystem /home/gabriel/work/rpm/BUILD/gcc-build-5.2.1/prev-powerpc-ibm-aix7.1.0.0/libstdc++-v3/include/powerpc-ibm-aix7.1.0.0  
- -isystem /home/gabriel/work/rpm/BUILD/gcc-build-5.2.1/prev-powerpc-ibm-aix7.1.0.0/libstdc++-v3/include  -isystem /home/gabriel/work/rpm/BUILD/gcc-5.2.1-20151104/libstdc++-v3/libsupc++ 
- -L/home/gabriel/work/rpm/BUILD/gcc-build-5.2.1/prev-powerpc-ibm-aix7.1.0.0/libstdc++-v3/src/.libs 
- -L/home/gabriel/work/rpm/BUILD/gcc-build-5.2.1/prev-powerpc-ibm-aix7.1.0.0/libstdc++-v3/libsupc++/.libs 
- -c   -O2 -I/opt/freeware/include -DIN_GCC    -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W 
- -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual 
- -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings   
- -DHAVE_CONFIG_H -DGENERATOR_FILE -I. -Ibuild -I../../gcc-5.2.1-20151104/gcc -I../../gcc-5.2.1-20151104/gcc/build 
- -I../../gcc-5.2.1-20151104/gcc/../include  
- -I../../gcc-5.2.1-20151104/gcc/../libcpp/include  \
        -o build/genmodes.o ../../gcc-5.2.1-20151104/gcc/genmodes.c
In file included from 
/home/gabriel/work/rpm/BUILD/gcc-5.2.1-20151104/libstdc++-v3/include/bits/stringfwd.h:40:0,
                 from 
/home/gabriel/work/rpm/BUILD/gcc-5.2.1-20151104/libstdc++-v3/include/std/string:39,
                 from ../../gcc-5.2.1-20151104/gcc/system.h:202,
                 from ../../gcc-5.2.1-20151104/gcc/genmddeps.c:19:
/home/gabriel/work/rpm/BUILD/gcc-5.2.1-20151104/libstdc++-v3/include/bits/memoryfwd.h:63:3: 
error: template with C linkage
   template<typename>
   ^
/home/gabriel/work/rpm/BUILD/gcc-5.2.1-20151104/libstdc++-v3/include/bits/memoryfwd.h:66:3: 
error: template specialization with C linkage
   template<>
   ^
/home/gabriel/work/rpm/BUILD/gcc-5.2.1-20151104/libstdc++-v3/include/bits/memoryfwd.h:70:3: 
error: template with C linkage
   template<typename, typename>
   ^
In file included from 
/home/gabriel/work/rpm/BUILD/gcc-5.2.1-20151104/libstdc++-v3/include/std/string:39:0,
                 from ../../gcc-5.2.1-20151104/gcc/system.h:202,
                 from ../../gcc-5.2.1-20151104/gcc/genmddeps.c:19:
/home/gabriel/work/rpm/BUILD/gcc-5.2.1-20151104/libstdc++-v3/include/bits/stringfwd.h:52:3: 
error: template with C linkage
   template<class _CharT>
   ^
/home/gabriel/work/rpm/BUILD/gcc-5.2.1-20151104/libstdc++-v3/include/bits/stringfwd.h:55:3: 
error: template specialization with C linkage
   template<> struct char_traits<char>;
   ^
/home/gabriel/work/rpm/BUILD/gcc-5.2.1-20151104/libstdc++-v3/include/bits/stringfwd.h:58:3: 
error: template specialization with C linkage
   template<> struct char_traits<wchar_t>;
   ^
/home/gabriel/work/rpm/BUILD/gcc-5.2.1-20151104/libstdc++-v3/include/bits/stringfwd.h:69:3: 
error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT>,

....


Thank you for your help.


Sincerely,
Gabriel

- -- 

// Gabriel VLASIU
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