Re: Octave 4.0 on Mac 10.10

[Eugenio Gianniti]

> On 03 Mar 2015, at 23:32, Marius Schamschula <address@hidden> wrote:
> 
> On Mar 1, 2015, at 10:44 PM, Carlo De Falco <address@hidden> wrote:
> 
>> 
>> On 28 Feb 2015, at 16:54, Ben Abbott <address@hidden> wrote:
>> 
>>> Opps. I had been using gcc on Mavericks. I expect I switched to clang when 
>>> I upgraded to Yosemite (which never worked for me).
>>> 
>>> I think Carlo is still able to build the default tip on Mavericks and using 
>>> Macports. Perhaps he can confirm the comment on how he configure's Octave.
>> 
>> Yes, I am using macports but I have to patch a few portfiles to make it work.
>> In particular I have to fix the Qscintilla version at 2.7.2.
>> Most other changes are to make sure that packages that do not have 
>> a gcc49 variant are built with gcc rather than clang.
>> It has been my intention for a long while to document all those changes 
>> in detail, but I never got time to do it.
>> 
>> Once the dependencies are in place I configure with:
>> 
>> ../octave/configure                                    \
>>   CC=gcc                                             \
>>   CFLAGS="-pipe -O2 -m64"                            \
>>   CPPFLAGS="-D_THREAD_SAFE -I/opt/local/include"     \
>>   LDFLAGS="-L/opt/local/lib -m64 "                   \
>>   CXX=g++                                            \
>>   CXXFLAGS="-pipe -O2 -m64"                          \
>>   F77=gfortran                                       \
>>   FFLAGS="-pipe -O2 -m64"                            \
>>   LLVM_CONFIG=/opt/local/bin/llvm-config-mp-3.4      \
>>   --with-lapack="-llapack -latlas -lgfortran"        \
>>   --with-blas="-lcblas -lf77blas -latlas -lgfortran" \
>>   --prefix=/opt/octave/4.1                           \
>>   --enable-gui                                       \
>>   --disable-jit                                      \
>>   --disable-java                                     \
>>   --with-framework-carbon                            \
>>   --with-arpack                                      \
>>   --enable-docs                                      \
>>   --with-opengl                                      \
>>   --without-x                                        \
>>   --enable-link-all-dependencies
>> 
>> I don't even remeber the reason for some of the flags, 
>> I guess many were inherited from Ben's examples.
>> 
>>> Ben
>> c.
> 
> Last night I did a bit more test compiling. I ran into the well known issue 
> with osmesa, so I disabled it. Apparently the MacPorts install of mesa 
> +osmesa does not install a consistent set of header files.
> 
> Now I’m dealing with the following issue:
> 
> Making all in libgui
> /Applications/Xcode.app/Contents/Developer/usr/bin/make  all-am
>  CXX      src/m-editor/src_libgui_src_la-file-editor-tab.lo
> In file included from ../libgnu/stdio.h:43:0,
>                 from ../libgnu/wchar.h:71,
>                 from /opt/local/include/gcc48/c++/cwchar:44,
>                 from /opt/local/include/gcc48/c++/bits/postypes.h:40,
>                 from /opt/local/include/gcc48/c++/bits/char_traits.h:40,
>                 from /opt/local/include/gcc48/c++/string:40,
>                 from /opt/local/include/QtCore/qstring.h:54,
>                 from /opt/local/include/QtCore/qobject.h:48,
>                 from /opt/local/include/Qsci/qscilexeroctave.h:33,
>                 from src/m-editor/file-editor-tab.cc:32:
> /usr/include/stdio.h:255:7: error: previous declaration of 'char* 
> gets(char*)' with 'C' linkage
> char *gets(char *);
>       ^
> In file included from /opt/local/include/gcc48/c++/cstdlib:72:0,
>                 from /opt/local/include/gcc48/c++/bits/stl_algo.h:59,
>                 from /opt/local/include/gcc48/c++/algorithm:62,
>                 from /opt/local/include/QtCore/qglobal.h:68,
>                 from /opt/local/include/QtCore/qnamespace.h:45,
>                 from /opt/local/include/QtCore/qobjectdefs.h:45,
>                 from /opt/local/include/QtCore/qobject.h:47,
>                 from /opt/local/include/Qsci/qscilexeroctave.h:33,
>                 from src/m-editor/file-editor-tab.cc:32:
> ../libgnu/stdio.h:1039:1: error: conflicts with new declaration with 'C++' 
> linkage
> _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
> ^
> make[3]: *** [src/m-editor/src_libgui_src_la-file-editor-tab.lo] Error 1
> make[2]: *** [all] Error 2
> make[1]: *** [all-recursive] Error 1
> make: *** [all] Error 2

When I incurred in the same problem I solved the issue with the attached patch,
in my case using Homebrew.
In my understanding the headers are too zealously wrapped in extern “C++” 
blocks,
hence basic C headers contents are included as both C and C++ functions.
Probably moving the opening lines after all the includes could be enough, but I 
adopted
the straightforward approach of just deleting them.

HTH,
Eugenio

qscintilla2_Qt4Qt5__APPLE__patch.diff
Description: qscintilla2_Qt4Qt5__APPLE__patch.diff

ATT00001.txt
Description: ATT00001.txt