ilya-biryukov

// This mapping is only used to determine which projects need to be rebuild.
// E.g. all builds are still in-tree, so 'llvm' will always be included in the
// built projects.
{
 "llvm": [],
 "clang": ["llvm"],
 "clang-tools-extra": ["clang", "llvm"],
 // FIXME: "compiler-rt" depends on "llvm" only for configuration, right?
 //        it means we can miss breakages in configuration changes.
 //        Same for libcxx, libc and other projects that don't have 'llvm'

ilya-biryukov

# First, build the index builder.
ninja global-symbol-builder
# $LLVM_PATH is source directory of LLVM. 
# compile_commands.json (or a symlink to it) should be there.
# Running this takes considerable time (> 30 mins).
./bin/global-symbol-builder -executor=all-TUs $LLVM_PATH > $HOME/llvm_clangd.symbols

# Run clangd with the following arg to make it pick up the built index:
# -yaml-symbol-file=$HOME/llvm_clangd.symbols

ilya-biryukov

template <class T>
int foo(T*);

template<>
int foo(int);

ilya-biryukov

template <class T>
class has_member_type {
    struct One { char a[1]; };
    struct Two { char a[2]; };

    template <class U>
    static One foo(typename U::type*);

    template <class U>
    static Two foo(...);