[haiku-development] Missing libstdc++ features in gcc4
- From: Adrien Destugues <pulkomandy@xxxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Thu, 07 Nov 2013 09:04:34 +0100
Hi,
I ran into a problem with our gcc4 package while trying to build a more
recent version of WebKit which makes use of C++11 features.
Our current gcc4 package does not define _GLIBCXX_USE_C99_MATH in
bits/c++config.h. As a result, some C++11 math functions aren't correctly
exported from cmath.h. One example is std::isinf, which is needed by WebKit.
I built the gcc4 compiler myself using configure --build-cross-tools, and
the resulting c++config.h seems very different. It does enable the feature.
I don't know how the gcc4 hpkg file is built, it seems build-cross-tools
doesn't do that. Since the configuration is different, I guess the package
does not use what build-cross-tools compiles?
--
Adrien.
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