[webkit-gtk] Regd. compilation error in webkit-1.8.0

debojyoti.pal at wipro.com debojyoti.pal at wipro.com
Tue May 22 23:18:34 PDT 2012


I am currently using webkit-1.8.0, here I have faced a compilation error. The steps I followed are:
1. ./configure --with-accelerated-compositing=cairo
2. make

Source/WebCore/platform/graphics/cairo/TextureMapperCairo.h: In static member function ‘static WTF::PassOwnPtr<WebCore::TextureMapper> WebCore::TextureMapperCairo::create()’:
Source/WebCore/platform/graphics/cairo/TextureMapperCairo.h:75: error: cannot allocate an object of abstract type ‘WebCore::TextureMapperCairo’
Source/WebCore/platform/graphics/cairo/TextureMapperCairo.h:59: note:   because the following virtual functions are pure within ‘WebCore::TextureMapperCairo’:
./Source/WebCore/platform/graphics/texmap/TextureMapper.h:121: note:     virtual WebCore::TextureMapper::AccelerationMode WebCore::TextureMapper::accelerationMode() const
Source/WebCore/platform/graphics/cairo/TextureMapperCairo.cpp: In member function ‘virtual WebCore::IntSize WebCore::TextureMapperCairo::viewportSize() const’:
Source/WebCore/platform/graphics/cairo/TextureMapperCairo.cpp:89: warning: no return statement in function returning non-void
Source/WebCore/platform/graphics/cairo/TextureMapperCairo.cpp: In member function ‘virtual WTF::PassRefPtr<WebCore::BitmapTexture> WebCore::TextureMapperCairo::createTexture()’:
Source/WebCore/platform/graphics/cairo/TextureMapperCairo.cpp:120: error: cannot allocate an object of abstract type ‘WebCore::BitmapTextureCairo’
Source/WebCore/platform/graphics/cairo/TextureMapperCairo.h:31: note:   because the following virtual functions are pure within ‘WebCore::BitmapTextureCairo’:
./Source/WebCore/platform/graphics/texmap/TextureMapper.h:66: note:     virtual void WebCore::BitmapTexture::updateContents(WebCore::Image*, const WebCore::IntRect&, const WebCore::IntRect&, WebCore::BitmapTexture::PixelFormat)
./Source/WebCore/platform/graphics/texmap/TextureMapper.h:67: note:     virtual void WebCore::BitmapTexture::updateContents(const void*, const WebCore::IntRect&)

After that I check the header files of the class TextureMapper and class TextureMapperCairo. TextureMapperCairo is a derived class of the abstract class TextureMapper, but don't implement some of the pure virtual functions.
This error seems to be very strange to me, as lot of people are using this, it should not be present or is it a known problem??


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