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authormark@chromium.org <mark@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>2009-03-13 14:53:02 +0000
committermark@chromium.org <mark@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>2009-03-13 14:53:02 +0000
commit3697547ae0042bc61d4d575afaefb245ba6034be (patch)
treec35dcfb11e1073bcc07c90e632e3b6021b5e966d /webkit/config.h.in
parent897d3bf2b8092cad9c51f6145b249f15447f4903 (diff)
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Prevent system WebCore.framework from not working due to collisions with
Objective-C names in our libwebcore.a by giving our Objective-C WebCore classes alternate names. Review URL: http://codereview.chromium.org/43094 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@11631 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'webkit/config.h.in')
-rw-r--r--webkit/config.h.in33
1 files changed, 31 insertions, 2 deletions
diff --git a/webkit/config.h.in b/webkit/config.h.in
index 1ff00ed..2fb36a3 100644
--- a/webkit/config.h.in
+++ b/webkit/config.h.in
@@ -127,13 +127,42 @@
#define WTF_USE_GOOGLEURL 1
-#if !PLATFORM(DARWIN)
+#if PLATFORM(DARWIN)
+
+// Chromium's version of WebCore includes the following Objective-C classes.
+// The system-provided WebCore framework may also provide these classes.
+// Because of the nature of Objective-C binding (dynamically at runtime),
+// it's possible for the Chromium-provided versions to interfere with the
+// system-provided versions. This may happen when a system framework attempts
+// to use WebCore.framework, such as when converting an HTML-flavored string
+// to an NSAttributedString. The solution is to force Objective-C class names
+// that would conflict to use alternate names.
+//
+// TODO(mark): This list will hopefully shrink but may also grow. Periodically
+// run "nm libwebcore.a | grep -E '[atsATS] ([+-]\[|\.objc_class_name)'" and
+// make sure that everything listed there has the alternate ChromiumWebCoreObjC
+// name, and that nothing extraneous is listed here. If all Objective-C can
+// be eliminated from Chromium's WebCore library, these defines should be
+// removed entirely.
+
+#define ScrollbarPrefsObserver \
+ ChromiumWebCoreObjCScrollbarPrefsObserver
+#define WebCoreControlTintObserver \
+ ChromiumWebCoreObjCWebCoreControlTintObserver
+#define WebCoreRenderThemeNotificationObserver \
+ ChromiumWebCoreObjCWebCoreRenderThemeNotificationObserver
+#define WebFontCache \
+ ChromiumWebCoreObjCWebFontCache
+
+#else // !PLATFORM(DARWIN)
+
// Don't define SKIA on Mac. Undefine other things as well that might get set
// as side-effects.
#define WTF_PLATFORM_SKIA 1
#undef WTF_PLATFORM_CG
#undef WTF_PLATFORM_CF
-#endif
+
+#endif // !PLATFORM(DARWIN)
#if !defined(WTF_USE_V8)
#define WTF_USE_V8 1