void-packages/srcpkgs/clazy/patches/0001-Replace-Find-scripts-with-llvm-clang-provided-cmake-.patch

From e49e57e1b12440a365a176ccfaded1d00ab0e62a Mon Sep 17 00:00:00 2001
From: John Zimmermann <me@johnnynator.dev>
Date: Mon, 9 Aug 2021 15:56:40 +0200
Subject: [PATCH] Replace Find* scripts with llvm/clang provided cmake modules

---
 CMakeLists.txt        |  24 +------
 cmake/FindClang.cmake | 130 ---------------------------------
 cmake/FindLLVM.cmake  | 162 ------------------------------------------
 3 files changed, 3 insertions(+), 313 deletions(-)
 delete mode 100644 cmake/FindClang.cmake
 delete mode 100644 cmake/FindLLVM.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6e649bfe..79fd1093 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,11 +24,10 @@ set(CLAZY_VERSION_PATCH "0")
 set(CLAZY_VERSION "${CLAZY_VERSION_MAJOR}.${CLAZY_VERSION_MINOR}.${CLAZY_VERSION_PATCH}")
 set(CLAZY_PRINT_VERSION "${CLAZY_VERSION_MAJOR}.${CLAZY_VERSION_MINOR}")
 
-set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_LIST_DIR}/cmake)
 if (NOT CLAZY_BUILD_WITH_CLANG)
-  find_package(Clang 8.0 MODULE REQUIRED)
+  find_package(Clang CONFIG REQUIRED)
 
-  if (CLANG_CLANG-CPP_LIB AND NOT APPLE)
+  if (TARGET clang-cpp AND NOT APPLE)
     set(default_use_clang_cpp ON)
   else()
     set(default_use_clang_cpp OFF)
@@ -128,24 +127,7 @@ macro(link_to_llvm name is_standalone)
     target_link_libraries(${name} ${clang_tooling_refactoring_lib})
   endif()
 
-  foreach(llvm_lib ${LLVM_LIBS})
-    if(NOT ${is_standalone} AND NOT APPLE AND NOT MINGW AND NOT MSVC)
-        ## Don't link against LLVMSupport, causes: CommandLine Error: Option 'view-background' registered more than once!
-        if (NOT llvm_lib MATCHES ".*LLVMSupport.*")
-            target_link_libraries(${name} ${llvm_lib})
-        endif()
-    else()
-        target_link_libraries(${name} ${llvm_lib})
-    endif()
-  endforeach()
-
-  foreach(user_lib ${USER_LIBS})
-    target_link_libraries(${name} ${user_lib})
-  endforeach()
-
-  foreach(llvm_system_lib ${LLVM_SYSTEM_LIBS})
-    target_link_libraries(${name} ${llvm_system_lib})
-  endforeach()
+  target_link_libraries(${name} LLVM)
 
   if(WIN32)
     target_link_libraries(${name} version.lib)
diff --git a/cmake/FindClang.cmake b/cmake/FindClang.cmake
deleted file mode 100644
index 7a40b2fb..00000000
--- a/cmake/FindClang.cmake
+++ /dev/null
@@ -1,130 +0,0 @@
-# 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
-
-#=============================================================================
-# Copyright 2014-2015 Kevin Funk <kfunk@kde.org>
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-#
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-#
-# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
-# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
-# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
-# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-#=============================================================================
-
-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_CLANG_LIB _libname_)
-    string(TOUPPER ${_libname_} _prettylibname_)
-    find_library(CLANG_${_prettylibname_}_LIB NAMES ${_libname_} HINTS ${LLVM_LIBRARY_DIRS})
-  endmacro(FIND_CLANG_LIB)
-  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_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(clangChecker)
-  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(clangRewrite)
-  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(clangSema)
-  FIND_AND_ADD_CLANG_LIB(clangRewriteCore)
-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 ${LLVM_CONFIG_EXECUTABLE} --src-root
-    OUTPUT_VARIABLE _llvmSourceRoot
-    OUTPUT_STRIP_TRAILING_WHITESPACE
-  )
-  string(FIND "${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}/tools/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()
diff --git a/cmake/FindLLVM.cmake b/cmake/FindLLVM.cmake
deleted file mode 100644
index fe7e87dd..00000000
--- a/cmake/FindLLVM.cmake
+++ /dev/null
@@ -1,162 +0,0 @@
-# Find the native LLVM includes and libraries
-#
-# Defines the following variables
-#  LLVM_INCLUDE_DIRS   - where to find llvm include files
-#  LLVM_LIBRARY_DIRS   - where to find llvm libs
-#  LLVM_CFLAGS         - llvm compiler flags
-#  LLVM_LFLAGS         - llvm linker flags
-#  LLVM_MODULE_LIBS    - list of llvm libs for working with modules.
-#  LLVM_INSTALL_PREFIX - LLVM installation prefix
-#  LLVM_FOUND          - True if llvm found.
-#  LLVM_VERSION        - Version string ("llvm-config --version")
-#
-# This module reads hints about search locations from variables
-#  LLVM_ROOT           - Preferred LLVM installation prefix (containing bin/, lib/, ...)
-#
-#  Note: One may specify these as environment variables if they are not specified as
-#   CMake variables or cache entries.
-
-#=============================================================================
-# Copyright 2014 Kevin Funk <kfunk@kde.org>
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-#
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-# notice, this list of conditions and the following disclaimer in the
-# documentation and/or other materials provided with the distribution.
-#
-# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
-# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
-# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
-# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-#=============================================================================
-
-if (NOT LLVM_ROOT AND DEFINED ENV{LLVM_ROOT})
-    file(TO_CMAKE_PATH "$ENV{LLVM_ROOT}" LLVM_ROOT)
-endif()
-
-# if the user specified LLVM_ROOT, use that and fail otherwise
-if (LLVM_ROOT)
-  find_program(LLVM_CONFIG_EXECUTABLE NAMES llvm-config HINTS ${LLVM_ROOT}/bin DOC "llvm-config executable" NO_DEFAULT_PATH)
-else()
-  # find llvm-config, prefer the one with a version suffix, e.g. llvm-config-3.5
-  # note: FreeBSD installs llvm-config as llvm-config35 and so on
-  # note: on some distributions, only 'llvm-config' is shipped, so let's always try to fallback on that
-  string(REPLACE "." "" LLVM_FIND_VERSION_CONCAT ${LLVM_FIND_VERSION})
-  find_program(LLVM_CONFIG_EXECUTABLE NAMES llvm-config-${LLVM_FIND_VERSION} llvm-config${LLVM_FIND_VERSION_CONCAT} llvm-config DOC "llvm-config executable")
-
-  # other distributions don't ship llvm-config, but only some llvm-config-VERSION binary
-  # try to deduce installed LLVM version by looking up llvm-nm in PATH and *then* find llvm-config-VERSION via that
-  if (NOT LLVM_CONFIG_EXECUTABLE)
-    find_program(_llvmNmExecutable llvm-nm)
-    if (_llvmNmExecutable)
-      execute_process(COMMAND ${_llvmNmExecutable} --version OUTPUT_VARIABLE _out)
-      string(REGEX REPLACE ".*LLVM version ([^ \n]+).*" "\\1" _versionString "${_out}")
-      find_program(LLVM_CONFIG_EXECUTABLE NAMES llvm-config-${_versionString} DOC "llvm-config executable")
-    endif()
-  endif()
-endif()
-
-set(LLVM_FOUND FALSE)
-
-if (LLVM_CONFIG_EXECUTABLE)
-  # verify that we've found the correct version of llvm-config
-  execute_process(COMMAND ${LLVM_CONFIG_EXECUTABLE} --version
-    OUTPUT_VARIABLE LLVM_VERSION
-    OUTPUT_STRIP_TRAILING_WHITESPACE)
-
-  if (NOT LLVM_VERSION)
-    set(_LLVM_ERROR_MESSAGE "Failed to parse version from llvm-config")
-  elseif (LLVM_FIND_VERSION VERSION_GREATER LLVM_VERSION)
-    set(_LLVM_ERROR_MESSAGE "LLVM version too old: ${LLVM_VERSION}")
-  else()
-    set(LLVM_FOUND TRUE)
-  endif()
-else()
-  set(_LLVM_ERROR_MESSAGE "Could NOT find 'llvm-config' executable")
-endif()
-
-if (LLVM_FOUND)
-  execute_process(
-    COMMAND ${LLVM_CONFIG_EXECUTABLE} --includedir
-    OUTPUT_VARIABLE LLVM_INCLUDE_DIRS
-    OUTPUT_STRIP_TRAILING_WHITESPACE
-  )
-
-  execute_process(
-    COMMAND ${LLVM_CONFIG_EXECUTABLE} --libdir
-    OUTPUT_VARIABLE LLVM_LIBRARY_DIRS
-    OUTPUT_STRIP_TRAILING_WHITESPACE
-  )
-
-  execute_process(
-    COMMAND ${LLVM_CONFIG_EXECUTABLE} --cppflags
-    OUTPUT_VARIABLE LLVM_CFLAGS
-    OUTPUT_STRIP_TRAILING_WHITESPACE
-  )
-
-  execute_process(
-    COMMAND ${LLVM_CONFIG_EXECUTABLE} --ldflags
-    OUTPUT_VARIABLE LLVM_LFLAGS
-    OUTPUT_STRIP_TRAILING_WHITESPACE
-  )
-
-  execute_process(
-    COMMAND ${LLVM_CONFIG_EXECUTABLE} --libs core bitreader asmparser analysis
-    OUTPUT_VARIABLE LLVM_MODULE_LIBS
-    OUTPUT_STRIP_TRAILING_WHITESPACE
-  )
-
-  execute_process(
-    COMMAND ${LLVM_CONFIG_EXECUTABLE} --libfiles
-    OUTPUT_VARIABLE LLVM_LIBS
-    OUTPUT_STRIP_TRAILING_WHITESPACE
-  )
-  string(REPLACE " " ";" LLVM_LIBS ${LLVM_LIBS}) # Make it consistent with --libs
-
-  execute_process(
-    COMMAND ${LLVM_CONFIG_EXECUTABLE} --system-libs
-    OUTPUT_VARIABLE LLVM_SYSTEM_LIBS
-    OUTPUT_STRIP_TRAILING_WHITESPACE
-  )
-
-  execute_process(
-    COMMAND ${LLVM_CONFIG_EXECUTABLE} --prefix
-    OUTPUT_VARIABLE LLVM_INSTALL_PREFIX
-    OUTPUT_STRIP_TRAILING_WHITESPACE
-  )
-
-  # potentially add include dir from binary dir for non-installed LLVM
-  execute_process(
-    COMMAND ${LLVM_CONFIG_EXECUTABLE} --src-root
-    OUTPUT_VARIABLE _llvmSourceRoot
-    OUTPUT_STRIP_TRAILING_WHITESPACE
-  )
-  string(FIND "${LLVM_INCLUDE_DIRS}" "${_llvmSourceRoot}" _llvmIsInstalled)
-  if (NOT _llvmIsInstalled)
-    list(APPEND LLVM_INCLUDE_DIRS "${LLVM_INSTALL_PREFIX}/include")
-  endif()
-endif()
-
-if (LLVM_FIND_REQUIRED AND NOT LLVM_FOUND)
-  message(FATAL_ERROR "Could not find LLVM: ${_LLVM_ERROR_MESSAGE}")
-elseif(_LLVM_ERROR_MESSAGE)
-  message(STATUS "Could not find LLVM: ${_LLVM_ERROR_MESSAGE}")
-endif()
-
-if (LLVM_FOUND)
-  message(STATUS "Found LLVM (version: ${LLVM_VERSION}): (using ${LLVM_CONFIG_EXECUTABLE})")
-  message(STATUS "  Include dirs:   ${LLVM_INCLUDE_DIRS}")
-  message(STATUS "  LLVM libraries: ${LLVM_LIBS}")
-  message(STATUS "  LLVM System libraries: ${LLVM_SYSTEM_LIBS}")
-endif()
-- 
2.32.0