Not moving forward with this, per IRC. On Mon, Sep 12, 2011 at 9:43 PM, Nico Weber <[email protected]> wrote: > Hi, > > the attached patch adds support for -fpredictive-compilation, for > compatibility with Apple gcc 4.2. > > With this flag, clang needs an input file name like normally, and uses > the input file to deduce the language (but -x can override it) and the > default output filename (but -o can override it). The input filename > is also used in diagnostic messages, but the actual compiler input is > read from standard input. > > With this patch, Xcode 3.2 can be started with > > /Developer/Applications/Xcode.app/Contents/MacOS/Xcode CC=path/to/clang > > and even with predictive compilation enabled (the default), cmd-k and > friends work correctly. (Xcode uses -fpredictive-compilation for this > as soon as the user changes a file. Since clang used to ignore this > flag, clang would compile the file as it exists on disk, while Xcode > would think that the file that it piped to stdin was built, which > would lead to error messages that were delayed by one compilation.) > > Ok? > > (In gcc, -fpredictive-compilation does not read from stdin if > -fpreprocessed is passed as well, but clang doesn't support > -fpreprocessed, so that logic is not required.) > > Thanks, > Nico >
_______________________________________________ cfe-commits mailing list [email protected] http://lists.cs.uiuc.edu/mailman/listinfo/cfe-commits
