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# Detect Clang libraries
#
# Defines the following variables:
# CLANG_FOUND - True if Clang was found
# CLANG_INCLUDE_DIRS - Where to find Clang includes
# CLANG_LIBRARY_DIRS - Where to find Clang libraries
#
# CLANG_LIBCLANG_LIB - Libclang C library
#
# CLANG_CLANGFRONTEND_LIB - Clang Frontend (C++) Library
# CLANG_CLANGDRIVER_LIB - Clang Driver (C++) Library
# ...
#
# CLANG_LIBS - All the Clang C++ libraries
#
# Uses the same include and library paths detected by FindLLVM.cmake
#
# See http://clang.llvm.org/docs/InternalsManual.html for full list of libraries
#=============================================================================
# SPDX-FileCopyrightText: 2014-2015 Kevin Funk <kfunk@kde.org>
# SPDX-FileCopyrightText: 2024 Shivan Kunwar <shivam.kunwar@kdab.com>
#
# SPDX-License-Identifier: BSD-2-Clause
#=============================================================================
if (${Clang_FIND_REQUIRED})
find_package(LLVM ${Clang_FIND_VERSION} REQUIRED)
else ()
find_package(LLVM ${Clang_FIND_VERSION})
endif ()
set(CLANG_FOUND FALSE)
if (LLVM_FOUND AND LLVM_LIBRARY_DIRS)
macro(FIND_AND_ADD_CLANG_LIB _libname_)
string(TOUPPER ${_libname_} _prettylibname_)
find_library(CLANG_${_prettylibname_}_LIB NAMES ${_libname_} HINTS ${LLVM_LIBRARY_DIRS})
if(CLANG_${_prettylibname_}_LIB)
set(CLANG_LIBS ${CLANG_LIBS} ${CLANG_${_prettylibname_}_LIB})
endif()
endmacro(FIND_AND_ADD_CLANG_LIB)
# note: On Windows there's 'libclang.dll' instead of 'clang.dll' -> search for 'libclang', too
find_library(CLANG_LIBCLANG_LIB NAMES clang libclang HINTS ${LLVM_LIBRARY_DIRS}) # LibClang: high-level C interface
FIND_AND_ADD_CLANG_LIB(clang-cpp)
FIND_AND_ADD_CLANG_LIB(clangFrontend)
FIND_AND_ADD_CLANG_LIB(clangDriver)
FIND_AND_ADD_CLANG_LIB(clangCodeGen)
FIND_AND_ADD_CLANG_LIB(clangSema)
FIND_AND_ADD_CLANG_LIB(clangAnalysis)
FIND_AND_ADD_CLANG_LIB(clangRewriteFrontend)
FIND_AND_ADD_CLANG_LIB(clangRewrite)
FIND_AND_ADD_CLANG_LIB(clangAST)
FIND_AND_ADD_CLANG_LIB(clangASTMatchers)
FIND_AND_ADD_CLANG_LIB(clangParse)
FIND_AND_ADD_CLANG_LIB(clangLex)
FIND_AND_ADD_CLANG_LIB(clangBasic)
FIND_AND_ADD_CLANG_LIB(clangARCMigrate)
FIND_AND_ADD_CLANG_LIB(clangEdit)
FIND_AND_ADD_CLANG_LIB(clangFrontendTool)
FIND_AND_ADD_CLANG_LIB(clangSerialization)
FIND_AND_ADD_CLANG_LIB(clangTooling)
FIND_AND_ADD_CLANG_LIB(clangStaticAnalyzerCheckers)
FIND_AND_ADD_CLANG_LIB(clangStaticAnalyzerCore)
FIND_AND_ADD_CLANG_LIB(clangStaticAnalyzerFrontend)
FIND_AND_ADD_CLANG_LIB(clangAPINotes)
FIND_AND_ADD_CLANG_LIB(clangSupport)
FIND_AND_ADD_CLANG_LIB(clangASTMatchers)
FIND_AND_ADD_CLANG_LIB(clangTransformer)
FIND_AND_ADD_CLANG_LIB(clangToolingCore)
FIND_AND_ADD_CLANG_LIB(clangToolingInclusions)
FIND_AND_ADD_CLANG_LIB(clangToolingRefactoring)
FIND_AND_ADD_CLANG_LIB(clangToolingSyntax)
FIND_AND_ADD_CLANG_LIB(clangDependencyScanning)
FIND_AND_ADD_CLANG_LIB(clangTidy)
endif()
if(CLANG_LIBS OR CLANG_LIBCLANG_LIB OR CLANG_CLANG-CPP_LIB)
set(CLANG_FOUND TRUE)
else()
message(STATUS "Could not find any Clang libraries in ${LLVM_LIBRARY_DIRS}")
endif()
if(CLANG_FOUND)
set(CLANG_LIBRARY_DIRS ${LLVM_LIBRARY_DIRS})
set(CLANG_INCLUDE_DIRS ${LLVM_INCLUDE_DIRS})
# check whether llvm-config comes from an install prefix
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --includedir
OUTPUT_VARIABLE _llvmSourceRoot
OUTPUT_STRIP_TRAILING_WHITESPACE
)
string(FIND "${LLVM_INCLUDE_DIRS}" "${_llvmSourceRoot}" _llvmIsInstalled)
if (NOT _llvmIsInstalled)
message(STATUS "Detected that llvm-config comes from a build-tree, adding more include directories for Clang")
list(APPEND CLANG_INCLUDE_DIRS
"${LLVM_INSTALL_PREFIX}/tools/clang/include" # build dir
"${_llvmSourceRoot}/../../clang/include" # source dir
)
endif()
message(STATUS "Found Clang (LLVM version: ${LLVM_VERSION})")
message(STATUS " Include dirs: ${CLANG_INCLUDE_DIRS}")
message(STATUS " Clang libraries: ${CLANG_LIBS}")
message(STATUS " Libclang C library: ${CLANG_LIBCLANG_LIB}")
message(STATUS " Clang dynamic library: ${CLANG_CLANG-CPP_LIB}")
else()
if(Clang_FIND_REQUIRED)
message(FATAL_ERROR "Could NOT find Clang")
endif()
endif()
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