xcode c++11 and libc++, wxWidgets 3.1.1

[joe31093]

I am running minimal project in the samples folder for OS X.

I am trying to add spdlog https://github.com/gabime/spdlog into the project. The error that I got was 'initializer_list' file not found. Then I tried to switch the project and wxcocoa.xcodeproj settings to c++11 and libc++ to resolve the issue.

Apple LLVM9.0 - Language - C++
C++ Language Dialect -> C++11 [-std=c++11]
C++ Standard Library -> libc++ (LLVM C++ standard library with C++ support)

The initializer_list error is still there and I have some additional cmath errors.

No member named 'signbit' in the global namespace
No member named 'fpclassify' in the global namespace; did you mean '__fpclassify'?
No member named 'isfinite' in the global namespace; did you mean 'finite'?
(and many more...)

Are there additional settings I need to make to work with c++11 and libc++ / resolve the issues?

[ONEEYEMAN]

Hi,
What is the exact error message you received without C++11?
Is the file present on your system?
Did you link with all required framework?
After you switch to C++11, did you rebuild wx and then rebuild your application?

Thank you.

[joe31093]

If I included just spdlog.h the error that I got was

'initializer_list' file not found

.

Then I switched to c++11 and libc++. wx rebuilt and the minimal project rebuilt. Then the following errors occurred:

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:313:9: No member named 'signbit' in the global namespace
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:314:9: No member named 'fpclassify' in the global namespace; did you mean '__fpclassify'?
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:315:9: No member named 'isfinite' in the global namespace; did you mean 'finite'?

And 10 more other errors coming from cmath.

[ONEEYEMAN]

Hi,
You need to re-configure and re-compile wx with c++11 mode.
Also, just curious - how exactly did you configure wx to be c++11 compatible? Please post an exact configure line.

Thank you.,

[joe31093]

Ok, I will reconfigure and rebuild wx and then reinstall it.

To change the xCode project to c++11/libc++, I went to Build Settings (by highlighting wxcocoa.xcodeproj), scroll down to Apple LLVM 9.0 - Language - C++, selected C++11 [-std=c++11] under C++ Language Dialect. Then selected libc++ under C++ Standard Library.

I will report back after the rebuild. Thanks for the help.

[joe31093]

I rebuilt everything and recompiled the project and same cmath errors listed above.

[ONEEYEMAN]

Hi,
What is the exact configure line you used to build the library?
You can take it from the config.log file that can be found inside the build directory.

Thank you.

[joe31093]

$ ../configure CFLAGS= CXXFLAGS=-std=c++11 -stdlib=libc++ CPPFLAGS=-stdlib=libc++ OBJCFLAGS= OBJCXXFLAGS=-std=c++11 -stdlib=libc++ LDFLAGS=-stdlib=libc++ --disable-shared

This seemed to have worked. I did not see any errors. I think what I am really after is how do I build the "minimal" project with c++11/libc++ in Xcode.

[joe31093]

I made the following changes to the project settings and it built the static library without issues. But building the executable I ran in to the math errors.

In wxcocoa.xcoconfig:
MACOSX_DEPLOYMENT_TARGET = 10.9 // changed from 10.7 to 10.9
OTHER_LDFLAGS = -framework WebKit -framework IOKit -framework Carbon -framework Cocoa -framework AudioToolbox -framework OpenGL -framework AVFoundation -framework CoreMedia -framework Security -weak_framework AVKit -std=c++11 -stdlib=libc++

In the project Build Settings:
C++ Language Dialect->C++11
C++ Standard Library->libc++

Math errors in cmath.h:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:313:9: No member named 'signbit' in the global namespace
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:314:9: No member named 'fpclassify' in the global namespace
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:315:9: No member named 'isfinite' in the global namespace; did you mean 'finite'?
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:316:9: No member named 'isinf' in the global namespace
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:317:9: No member named 'isnan' in the global namespace
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:318:9: No member named 'isnormal' in the global namespace
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:319:7: No member named 'isgreater' in the global namespace; did you mean '::std::greater'?
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:320:7: No member named 'isgreaterequal' in the global namespace; did you mean '::std::greater_equal'?
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:321:9: No member named 'isless' in the global namespace
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:322:9: No member named 'islessequal' in the global namespace
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:323:9: No member named 'islessgreater' in the global namespace
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:324:9: No member named 'isunordered' in the global namespace
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cmath:325:9: No member named 'isunordered' in the global namespace

Dependency order issue?

[joe31093]

Issue resolved:

Had "/usr/local/include" in "System Header Search Paths" by mistake. Moved the path to "User Header Search Paths" fixed the issue.

Thanks for all the help.