Remove libclang

cmake/FindClang.cmake

@@ -68,9 +68,8 @@ set(_Clang_REQUIRED_VARS Clang_LIBRARY Clang_INCLUDE_DIR Clang_EXECUTABLE
                          Clang_RESOURCE_DIR Clang_VERSION
                          LLVM_INCLUDE_DIR LLVM_BUILD_INCLUDE_DIR)
 
-_Clang_find_library(Clang_LIBRARY clang)
+_Clang_find_library(Clang_LIBRARY clangIndex)
 _Clang_find_add_library(clangTooling)
-_Clang_find_add_library(clangIndex)
 _Clang_find_add_library(clangFrontend)
 _Clang_find_add_library(clangParse)
 _Clang_find_add_library(clangSerialization)

src/indexer.cc

@@ -6,7 +6,6 @@
 #include "serializer.h"
 using ccls::Intern;
 
-#include <clang-c/Index.h>
 #include <clang/AST/AST.h>
 #include <clang/Frontend/ASTUnit.h>
 #include <clang/Frontend/CompilerInstance.h>
@@ -1083,13 +1082,6 @@ void Uniquify(std::vector<Use>& uses) {
 
 
 namespace ccls::idx {
-void IndexInit() {
-  // This calls llvm::InitializeAllTargets() ... for us, we would otherwise link
-  // all target libraries.
-  CXIndex CXIdx = clang_createIndex(0, 0);
-  clang_disposeIndex(CXIdx);
-}
-
 std::vector<std::unique_ptr<IndexFile>> Index(
     VFS* vfs,
     const std::string& opt_wdir,

src/indexer.h

@@ -295,8 +295,6 @@ struct IndexFile {
 };
 
 namespace ccls::idx {
-void IndexInit();
-
 std::vector<std::unique_ptr<IndexFile>>
 Index(VFS *vfs, const std::string &opt_wdir, const std::string &file,
   const std::vector<std::string> &args,

src/project.cc

@@ -154,8 +154,7 @@ Project::Entry GetCompilationEntryFromCompileCommandEntry(
       continue;
     }
 
-  if (!sys::path::is_absolute(HeaderOpts.ResourceDir) &&
-      HeaderOpts.UseBuiltinIncludes)
+  if (!sys::fs::exists(HeaderOpts.ResourceDir) && HeaderOpts.UseBuiltinIncludes)
     args.push_back("-resource-dir=" + g_config->clang.resourceDir);
   if (CI->getFileSystemOpts().WorkingDir.empty())
     args.push_back("-working-directory=" + entry.directory);