================ @@ -0,0 +1,232 @@ +#===-- CMakeLists.txt ------------------------------------------------------===# +# +# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +# See https://llvm.org/LICENSE.txt for license information. +# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +# +#===------------------------------------------------------------------------===# +# +# Build instructions for the flang-rt library. This is file is intended to be +# included using the LLVM_ENABLE_RUNTIMES mechanism. +# +#===------------------------------------------------------------------------===# + +if (NOT LLVM_RUNTIMES_BUILD) + message(FATAL_ERROR "Use this CMakeLists.txt from LLVM's runtimes build system. + Example: + cmake <llvm-project>/runtimes -DLLVM_ENABLE_RUNTIMES=flang-rt + ") +endif () + +set(LLVM_SUBPROJECT_TITLE "Flang-RT") +set(FLANG_RT_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}") +set(FLANG_RT_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}") +set(FLANG_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../flang") + + +# CMake 3.24 is the first version of CMake that directly recognizes Flang. +# LLVM's requirement is only CMake 3.20, teach CMake 3.20-3.23 how to use Flang. +if (CMAKE_VERSION VERSION_LESS "3.24") + cmake_path(GET CMAKE_Fortran_COMPILER STEM _Fortran_COMPILER_STEM) + if (_Fortran_COMPILER_STEM STREQUAL "flang-new" OR _Fortran_COMPILER_STEM STREQUAL "flang") + include(CMakeForceCompiler) + CMAKE_FORCE_Fortran_COMPILER("${CMAKE_Fortran_COMPILER}" "LLVMFlang") + + set(CMAKE_Fortran_COMPILER_ID "LLVMFlang") + set(CMAKE_Fortran_COMPILER_VERSION "${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}") + + set(CMAKE_Fortran_SUBMODULE_SEP "-") + set(CMAKE_Fortran_SUBMODULE_EXT ".mod") + + set(CMAKE_Fortran_PREPROCESS_SOURCE + "<CMAKE_Fortran_COMPILER> -cpp <DEFINES> <INCLUDES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>") + + set(CMAKE_Fortran_FORMAT_FIXED_FLAG "-ffixed-form") + set(CMAKE_Fortran_FORMAT_FREE_FLAG "-ffree-form") + + set(CMAKE_Fortran_MODDIR_FLAG "-module-dir") + + set(CMAKE_Fortran_COMPILE_OPTIONS_PREPROCESS_ON "-cpp") + set(CMAKE_Fortran_COMPILE_OPTIONS_PREPROCESS_OFF "-nocpp") + set(CMAKE_Fortran_POSTPROCESS_FLAG "-ffixed-line-length-72") + + set(CMAKE_Fortran_COMPILE_OPTIONS_TARGET "--target=") + + set(CMAKE_Fortran_LINKER_WRAPPER_FLAG "-Wl,") + set(CMAKE_Fortran_LINKER_WRAPPER_FLAG_SEP ",") + endif () +endif () +enable_language(Fortran) + + +list(APPEND CMAKE_MODULE_PATH + "${FLANG_RT_SOURCE_DIR}/cmake/modules" + "${FLANG_SOURCE_DIR}/cmake/modules" + ) +include(AddFlangRT) +include(GetToolchainDirs) +include(FlangCommon) +include(HandleCompilerRT) +include(ExtendPath) +include(GNUInstallDirs) + + +############################ +# Build Mode Introspection # +############################ + +# Determine whether we are in the runtimes/runtimes-bins directory of a +# bootstrap build. +set(LLVM_TREE_AVAILABLE OFF) +if (LLVM_LIBRARY_OUTPUT_INTDIR AND LLVM_RUNTIME_OUTPUT_INTDIR AND PACKAGE_VERSION) + set(LLVM_TREE_AVAILABLE ON) +endif() + +# Path to LLVM development tools (FileCheck, llvm-lit, not, ...) +set(LLVM_TOOLS_DIR "${LLVM_BINARY_DIR}/bin") + +# Determine build and install paths. +# The build path is absolute, but the install dir is relative, CMake's install +# command has to apply CMAKE_INSTALL_PREFIX itself. +if (LLVM_TREE_AVAILABLE) + # In a bootstrap build emit the libraries into a default search path in the + # build directory of the just-built compiler. This allows using the + # just-built compiler without specifying paths to runtime libraries. + # + # Despite Clang in the name, get_clang_resource_dir does not depend on Clang + # being added to the build. Flang uses the same resource dir as clang. + include(GetClangResourceDir) + get_clang_resource_dir(FLANG_RT_OUTPUT_RESOURCE_DIR PREFIX "${LLVM_LIBRARY_OUTPUT_INTDIR}/..") ---------------- Meinersbur wrote:
`lib64` is determined by [`CMAKE_INSTALL_LIBDIR`](https://cmake.org/cmake/help/latest/module/GNUInstallDirs.html) which seems the correct way to do it. If clang does not recognize it, I will need to hardcode `lib`. https://github.com/llvm/llvm-project/pull/110217 _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
