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[CMake] Bump CMake minimum version to 3.13.4
This upgrade should be friction-less because we've already been ensuring that CMake >= 3.13.4 is used. This is part of the effort discussed on llvm-dev here: http://lists.llvm.org/pipermail/llvm-dev/2020-April/140578.html Differential Revision: https://reviews.llvm.org/D78648
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‎clang/CMakeLists.txt

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cmake_minimum_required(VERSION 3.4.3)
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cmake_minimum_required(VERSION 3.13.4)
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if(POLICY CMP0075)
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cmake_policy(SET CMP0075 NEW)

‎clang/tools/scan-build-py/tests/functional/exec/CMakeLists.txt

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project(exec C)
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cmake_minimum_required(VERSION 3.4.3)
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cmake_minimum_required(VERSION 3.13.4)
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include(CheckCCompilerFlag)
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check_c_compiler_flag("-std=c99" C99_SUPPORTED)

‎compiler-rt/CMakeLists.txt

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# An important constraint of the build is that it only produces libraries
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# based on the ability of the host toolchain to target various platforms.
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cmake_minimum_required(VERSION 3.4.3)
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cmake_minimum_required(VERSION 3.13.4)
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if(POLICY CMP0075)
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cmake_policy(SET CMP0075 NEW)

‎compiler-rt/cmake/Modules/CustomLibcxx/CMakeLists.txt

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cmake_minimum_required(VERSION 3.4.3)
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cmake_minimum_required(VERSION 3.13.4)
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project(custom-libcxx C CXX)
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# Build static libcxxabi.

‎compiler-rt/lib/builtins/CMakeLists.txt

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# architecture-specific code in various subdirectories.
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if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
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cmake_minimum_required(VERSION 3.4.3)
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cmake_minimum_required(VERSION 3.13.4)
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project(CompilerRTBuiltins C ASM)
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set(COMPILER_RT_STANDALONE_BUILD TRUE)

‎flang/CMakeLists.txt

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cmake_minimum_required(VERSION 3.9.0)
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cmake_minimum_required(VERSION 3.13.4)
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# RPATH settings on macOS do not affect INSTALL_NAME.
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if (POLICY CMP0068)

‎libclc/CMakeLists.txt

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cmake_minimum_required( VERSION 3.9.2 )
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cmake_minimum_required(VERSION 3.13.4)
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project( libclc VERSION 0.2.0 LANGUAGES CXX )
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include( GNUInstallDirs )

‎libcxx/CMakeLists.txt

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@@ -8,7 +8,7 @@ endif()
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#===============================================================================
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# Setup Project
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#===============================================================================
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cmake_minimum_required(VERSION 3.4.3)
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cmake_minimum_required(VERSION 3.13.4)
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if(POLICY CMP0042)
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cmake_policy(SET CMP0042 NEW) # Set MACOSX_RPATH=YES by default

‎libcxx/utils/ci/runtimes/CMakeLists.txt

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cmake_minimum_required(VERSION 3.4.3)
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cmake_minimum_required(VERSION 3.13.4)
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if(POLICY CMP0068)
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cmake_policy(SET CMP0068 NEW)

‎libcxxabi/CMakeLists.txt

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@@ -8,7 +8,7 @@ endif()
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# Setup Project
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#===============================================================================
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cmake_minimum_required(VERSION 3.4.3)
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cmake_minimum_required(VERSION 3.13.4)
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if(POLICY CMP0042)
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cmake_policy(SET CMP0042 NEW) # Set MACOSX_RPATH=YES by default

‎libunwind/CMakeLists.txt

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# Setup Project
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#===============================================================================
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cmake_minimum_required(VERSION 3.4.3)
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cmake_minimum_required(VERSION 3.13.4)
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if (POLICY CMP0042)
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cmake_policy(SET CMP0042 NEW) # Set MACOSX_RPATH=YES by default

‎lld/CMakeLists.txt

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# Check if lld is built as a standalone project.
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if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
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project(lld)
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cmake_minimum_required(VERSION 3.4.3)
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cmake_minimum_required(VERSION 3.13.4)
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set(CMAKE_INCLUDE_CURRENT_DIR ON)
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set(LLD_BUILT_STANDALONE TRUE)

‎lldb/CMakeLists.txt

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cmake_minimum_required(VERSION 3.4.3)
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if(CMAKE_SYSTEM_NAME STREQUAL Windows)
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cmake_minimum_required(VERSION 3.13)
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endif()
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cmake_minimum_required(VERSION 3.13.4)
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if(POLICY CMP0075)
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cmake_policy(SET CMP0075 NEW)

‎lldb/tools/debugserver/CMakeLists.txt

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cmake_minimum_required(VERSION 3.4.3)
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cmake_minimum_required(VERSION 3.13.4)
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project(Debugserver LANGUAGES C CXX ASM-ATT)
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‎llvm/CMakeLists.txt

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# See docs/CMake.html for instructions about how to build LLVM with CMake.
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cmake_minimum_required(VERSION 3.4.3)
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if ("${CMAKE_VERSION}" VERSION_LESS "3.13.4")
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message(FATAL_ERROR
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"Your CMake version is ${CMAKE_VERSION}. The minimum version of CMake "
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"required to build LLVM is now 3.13.4.")
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endif()
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cmake_minimum_required(VERSION 3.13.4)
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if(POLICY CMP0068)
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cmake_policy(SET CMP0068 NEW)

‎llvm/docs/CMake.rst

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@@ -34,7 +34,7 @@ Quick start
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We use here the command-line, non-interactive CMake interface.
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#. `Download <http://www.cmake.org/cmake/resources/software.html>`_ and install
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CMake. Version 3.4.3 is the minimum required.
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CMake. Version 3.13.4 is the minimum required.
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#. Open a shell. Your development tools must be reachable from this shell
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through the PATH environment variable.
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.. code-block:: cmake
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cmake_minimum_required(VERSION 3.4.3)
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cmake_minimum_required(VERSION 3.13.4)
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project(SimpleProject)
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find_package(LLVM REQUIRED CONFIG)

‎llvm/docs/CMakePrimer.rst

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.. code-block:: cmake
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cmake_minimum_required(VERSION 3.2)
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cmake_minimum_required(VERSION 3.15)
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project(HelloWorld)
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add_executable(HelloWorld HelloWorld.cpp)
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.. code-block:: cmake
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cmake_minimum_required(VERSION 3.2)
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cmake_minimum_required(VERSION 3.15)
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project(HelloWorld)
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add_executable(HelloWorld HelloWorld.cpp)
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if(APPLE)
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target_compile_definitions(HelloWorld PUBLIC APPLE)
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endif()
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Variables, Types, and Scope
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===========================
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set(var_name var1)
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set(${var_name} foo) # same as "set(var1 foo)"
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set(${${var_name}}_var bar) # same as "set(foo_var bar)"
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Dereferencing an unset variable results in an empty expansion. It is a common
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pattern in CMake to conditionally set variables knowing that it will be used in
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code paths that the variable isn't set. There are examples of this throughout
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set(extra_sources Apple.cpp)
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endif()
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add_executable(HelloWorld HelloWorld.cpp ${extra_sources})
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In this example the ``extra_sources`` variable is only defined if you're
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targeting an Apple platform. For all other targets the ``extra_sources`` will be
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evaluated as empty before add_executable is given its arguments.
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# Creates a list with members a, b, c, and d
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set(my_list a b c d)
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set(my_list "a;b;c;d")
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# Creates a string "a b c d"
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set(my_string "a b c d")
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set(a 1 2 3)
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set(b 4 5 6)
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set(c 7 8 9)
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With this layout you can iterate through the list of lists printing each value
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with the following code:
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message(${value})
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endforeach()
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endforeach()
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You'll notice that the inner foreach loop's list is doubly dereferenced. This is
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because the first dereference turns ``list_name`` into the name of the sub-list
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(a, b, or c in the example), then the second dereference is to get the value of
@@ -385,7 +385,7 @@ result in some unexpected behavior if using unreferenced variables. For example:
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message("${var}")
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endforeach()
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endmacro()
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set(my_list a b c d)
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set(my_list_of_numbers 1 2 3 4)
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print_list(my_list_of_numbers)

‎llvm/docs/GettingStarted.rst

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=========================================================== ============ ==========================================
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Package Version Notes
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=========================================================== ============ ==========================================
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`CMake <http://cmake.org/>`__ >=3.4.3 Makefile/workspace generator
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`CMake <http://cmake.org/>`__ >=3.13.4 Makefile/workspace generator
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`GCC <http://gcc.gnu.org/>`_ >=5.1.0 C/C++ compiler\ :sup:`1`
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`python <http://www.python.org/>`_ >=2.7 Automated test suite\ :sup:`2`
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`zlib <http://zlib.net>`_ >=1.2.3.4 Compression library\ :sup:`3`

‎llvm/runtimes/CMakeLists.txt

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# Setting CMake minimum required version should be at the very top of the file
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# if this is the entry point.
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if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
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cmake_minimum_required(VERSION 3.4.3)
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cmake_minimum_required(VERSION 3.13.4)
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project(Runtimes C CXX ASM)
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endif()
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set_property(GLOBAL APPEND PROPERTY SUB_COMPONENTS ${name})
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endfunction()
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cmake_minimum_required(VERSION 3.4.3)
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cmake_minimum_required(VERSION 3.13.4)
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project(Runtimes C CXX ASM)
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find_package(LLVM PATHS "${LLVM_BINARY_DIR}" NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)

‎llvm/utils/benchmark/CMakeLists.txt

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cmake_minimum_required (VERSION 2.8.12)
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cmake_minimum_required(VERSION 3.13.4)
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# Tell cmake 3.0+ that it's safe to clear the PROJECT_VERSION variable in the
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# call to project() below.

‎mlir/examples/standalone/CMakeLists.txt

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cmake_minimum_required(VERSION 3.10)
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cmake_minimum_required(VERSION 3.13.4)
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if(POLICY CMP0068)
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cmake_policy(SET CMP0068 NEW)

‎openmp/CMakeLists.txt

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cmake_minimum_required(VERSION 2.8 FATAL_ERROR)
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cmake_minimum_required(VERSION 3.13.4)
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# Add cmake directory to search for custom cmake functions.
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set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake ${CMAKE_MODULE_PATH})

‎openmp/cmake/DetectTestCompiler/CMakeLists.txt

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cmake_minimum_required(VERSION 2.8)
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cmake_minimum_required(VERSION 3.13.4)
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project(DetectTestCompiler C CXX)
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include(CheckCCompilerFlag)

‎openmp/runtime/cmake/LibompCheckLinkerFlag.cmake

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set(library_source
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"int foo(int a) { return a*a; }")
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set(cmake_source
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"cmake_minimum_required(VERSION 2.8)
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"cmake_minimum_required(VERSION 3.13.4)
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project(foo C)
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set(CMAKE_SHARED_LINKER_FLAGS \"${flag}\")
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add_library(foo SHARED src_to_link.c)")

‎parallel-libs/CMakeLists.txt

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cmake_minimum_required(VERSION 3.1)
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cmake_minimum_required(VERSION 3.13.4)

‎parallel-libs/acxxel/CMakeLists.txt

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cmake_minimum_required(VERSION 3.1)
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cmake_minimum_required(VERSION 3.13.4)
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option(ACXXEL_ENABLE_UNIT_TESTS "enable acxxel unit tests" ON)
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option(ACXXEL_ENABLE_MULTI_DEVICE_UNIT_TESTS "enable acxxel multi-device unit tests" OFF)

‎polly/CMakeLists.txt

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# Check if this is a in tree build.
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if (NOT DEFINED LLVM_MAIN_SRC_DIR)
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project(Polly)
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cmake_minimum_required(VERSION 3.4.3)
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cmake_minimum_required(VERSION 3.13.4)
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# Where is LLVM installed?
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find_package(LLVM CONFIG REQUIRED)

‎pstl/CMakeLists.txt

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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#
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#===----------------------------------------------------------------------===##
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cmake_minimum_required(VERSION 3.13.4)
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set(PARALLELSTL_VERSION_FILE "${CMAKE_CURRENT_SOURCE_DIR}/include/pstl/internal/pstl_config.h")
1111
file(STRINGS "${PARALLELSTL_VERSION_FILE}" PARALLELSTL_VERSION_SOURCE REGEX "#define _PSTL_VERSION .*$")

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