On Sun, Dec 9, 2018 at 8:22 AM Darin Adler <da...@apple.com> wrote: > Best would be to eliminate “config.h”: Change “config.h” into an empty > file first, then remove all “config.h” includes, and then remove the file. > But to do that, we need to make sure every build system for WebKit supports > prefix headers. I don’t know how close to that we are. Maybe close? How can > we quickly find out?
GCC and Clang support '-include <file>' option. https://gcc.gnu.org/onlinedocs/gcc/Preprocessor-Options.html <https://gcc.gnu.org/onlinedocs/gcc/Preprocessor-Options.html> https://clang.llvm.org/docs/ClangCommandLineReference.html <https://clang.llvm.org/docs/ClangCommandLineReference.html> GTK and WPE ports are using it only in WK2 since r163032. https://trac.webkit.org/changeset/163032 <https://trac.webkit.org/changeset/163032> MSVC has /FI option. /FI (Name Forced Include File) | Microsoft Docs https://docs.microsoft.com/en-us/cpp/build/reference/fi-name-forced-include-file?view=vs-2017 <https://docs.microsoft.com/en-us/cpp/build/reference/fi-name-forced-include-file?view=vs-2017> Unfortunately, it seems that MSVC's precompiled header needs to be included explicitly. /Yu (Use Precompiled Header File) | Microsoft Docs https://docs.microsoft.com/en-us/cpp/build/reference/yu-use-precompiled-header-file?view=vs-2017 <https://docs.microsoft.com/en-us/cpp/build/reference/yu-use-precompiled-header-file?view=vs-2017>
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