Re: [Gimp-developer] GNU++11 not allowed with Objective-C code



On Sat, Apr 7, 2018 at 1:24 PM, Ell via gimp-developer-list <
gimp-developer-list gnome org> wrote:

On Sat, 7 Apr 2018 12:41:10 -0400
Partha Bagchi <partha1b gmail com> wrote:

Ell my friend, it's me again. :)

We can't use gnu++11 with objective-c code.

  CXX      gimp-parallel.o

error: invalid argument '-std=gnu++11' not allowed with 'Objective-C'

make[3]: *** [gimp-parallel.o] Error 1

So, how do we fix this? Also, shouldn't we be using c++11 or c++14 to
be generic?

The specific compiler flag is chosen by some configure magic, so it
should generally be ok.  A little googling shows that people are
getting the same error with -std=c++11 too.

I'm not sure why clang tries to compile this as objective-c, though.
Can you post the output of $ make V=1 ?

--
Ell

My apologies. I should have framed that as 2 different issues. One about
the compilation and the other that we should probably be using C++14 (or
11) instead of gnu++11.

In any case, the verbose mode may not be particularly helpful:

 g++ -DHAVE_CONFIG_H -I. -I../..  -DGIMPDIR=\""GIMP"\"
-DGIMP_APP_VERSION=\"2.10\" -DGIMP_USER_VERSION=\"2.10\"
-DG_LOG_DOMAIN=\"Gimp-Core\" -I../.. -I../.. -I../../app -I../../app
-I/Users/partha/local10.9/include/cairo
-I/Users/partha/local10.9/include/pixman-1
-I/Users/partha/local10.9/include
-I/Users/partha/local10.9/include/freetype2
-I/Users/partha/local10.9/include
-I/Users/partha/local10.9/include/libpng16
-I/Users/partha/local10.9/include/harfbuzz
-I/Users/partha/local10.9/include/glib-2.0
-I/Users/partha/local10.9/lib/glib-2.0/include
-I/Users/partha/local10.9/include
-I/Users/partha/local10.9/include/freetype2
-I/Users/partha/local10.9/include/harfbuzz
-I/Users/partha/local10.9/include/glib-2.0
-I/Users/partha/local10.9/lib/glib-2.0/include
-I/Users/partha/local10.9/include/libpng16
-I/Users/partha/local10.9/include -D_REENTRANT
-I/Users/partha/local10.9/include/json-glib-1.0
-I/Users/partha/local10.9/include/gio-unix-2.0/
-I/Users/partha/local10.9/include/glib-2.0
-I/Users/partha/local10.9/lib/glib-2.0/include
-I/Users/partha/local10.9/mcgimp-std/Contents/Resources/include/gegl-0.3
-I/Users/partha/local10.9/mcgimp-std/Contents/Resources/include/babl-0.1
-D_REENTRANT -I/Users/partha/local10.9/include/gdk-pixbuf-2.0
-I/Users/partha/local10.9/include/libpng16
-I/Users/partha/local10.9/include
-I/Users/partha/local10.9/include/glib-2.0
-I/Users/partha/local10.9/lib/glib-2.0/include
-I/Users/partha/local10.9/include/libmypaint
-I/Users/partha/local10.9/include/json-c
-I/Users/partha/local10.9/include/glib-2.0
-I/Users/partha/local10.9/lib/glib-2.0/include
-I/Users/partha/local10.9/include
-I/Users/partha/local10.9/include/glib-2.0
-I/Users/partha/local10.9/lib/glib-2.0/include
-I/Users/partha/local10.9/mcgimp-std/Contents/Resources/include
"-xobjective-c" -I/Users/partha/local10.9/include -DGIMP_DISABLE_DEPRECATED
-DBABL_DISABLE_DEPRECATED -DGSEAL_ENABLE -DGDK_DISABLE_DEPRECATED
-DGTK_DISABLE_DEPRECATED -DGDK_MULTIHEAD_SAFE -DGTK_MULTIHEAD_SAFE
-std=c++14 -O3 -ffast-math -ftree-vectorize -mmacosx-version-min=10.9 -MT
gimp-parallel.o -MD -MP -MF .deps/gimp-parallel.Tpo -c -o gimp-parallel.o
gimp-parallel.cc
error: invalid argument '-std=c++14' not allowed with 'Objective-C'
make: *** [gimp-parallel.o] Error 1

In there you can see "-xobjective-c" is being used to compile
gimp-parallel.cc. Also, you're seeing -std=c++14 because I have CXXFLAGS
defined that way.

Thanks,
Partha


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