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5c1b0a6b7e
The TU for Rust is a crate, not per-source. `rustc` expects entry file to TU as input, and cannot work with object files. So we need to have one-step build/link in most cases, similar to what old Swift was doing. Issue: #25492 Signed-off-by: Ayush Singh <ayush@beagleboard.org>
42 lines
1.7 KiB
CMake
42 lines
1.7 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file LICENSE.rst or https://cmake.org/licensing for details.
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include(CMakeLanguageInformation)
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if(UNIX)
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set(CMAKE_Rust_OUTPUT_EXTENSION .o)
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else()
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set(CMAKE_Rust_OUTPUT_EXTENSION .obj)
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endif()
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set(CMAKE_Rust_LIBRARY_PATH_FLAG "-L ")
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set(CMAKE_Rust_LINK_LIBRARY_FILE_FLAG "-C link-arg=")
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set(CMAKE_EXECUTABLE_RUNTIME_Rust_FLAG "-C link-arg=-Wl,-rpath,")
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set(CMAKE_EXECUTABLE_RUNTIME_Rust_FLAG_SEP ",")
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set(CMAKE_Rust_FLAGS_DEBUG_INIT "-C opt-level=0 -g")
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set(CMAKE_Rust_FLAGS_RELEASE_INIT "-O")
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set(CMAKE_Rust_FLAGS_RELWITHDEBINFO_INIT "-O -g")
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set(CMAKE_Rust_FLAGS_MINSIZEREL_INIT "-C opt-level=z")
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cmake_initialize_per_config_variable(CMAKE_Rust_FLAGS "Flags used by the Rust compiler")
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if(NOT CMAKE_Rust_CREATE_STATIC_LIBRARY)
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set(CMAKE_Rust_CREATE_STATIC_LIBRARY "${CMAKE_Rust_COMPILER} <LANGUAGE_COMPILE_FLAGS> --crate-type=staticlib <RUST_SOURCES> -o <TARGET> -C link-args=\"<RUST_OBJECT_DEPS>\"")
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endif()
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if(NOT CMAKE_Rust_CREATE_SHARED_LIBRARY)
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set(CMAKE_Rust_CREATE_SHARED_LIBRARY "${CMAKE_Rust_COMPILER} <LANGUAGE_COMPILE_FLAGS> --crate-type=cdylib <RUST_SOURCES> -o <TARGET> <LINK_FLAGS> <LINK_LIBRARIES> -C link-args=\"<RUST_OBJECT_DEPS>\"")
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endif()
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# Deadcode warnings are not useful when generating object files.
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if(NOT CMAKE_Rust_COMPILE_OBJECT)
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set(CMAKE_Rust_COMPILE_OBJECT "${CMAKE_Rust_COMPILER} <FLAGS> -A dead_code --crate-type=lib --emit=obj=<OBJECT>,dep-info=<DEP_FILE> <SOURCE>")
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endif()
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if(NOT CMAKE_Rust_LINK_EXECUTABLE)
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set(CMAKE_Rust_LINK_EXECUTABLE "${CMAKE_Rust_COMPILER} <FLAGS> --crate-type=bin <RUST_SOURCES> -o <TARGET> <LINK_FLAGS> <LINK_LIBRARIES> -C link-args=\"<RUST_OBJECT_DEPS>\"")
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endif()
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set(CMAKE_Rust_INFORMATION_LOADED 1)
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