Error compiling cxx.cc on Windows
#1349
Comments
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This specific issue was fixed by adding With corrosion on its own and maintaining my own building with custom commands, I was able to produce a Rust However now my build is throwing undefined references to symbols. C++ code: // main.cpp
#include "src/lib.rs.h"
auto main() -> int
{
greet();
return 0;
}Rust code: // src/lib.rs
#[cxx::bridge]
mod ffi {
extern "Rust" {
pub fn greet();
}
}
pub fn greet() {
println!("Hello from Rust!")
}Cargo.toml: [package]
name = "lib"
version = "0.1.0"
edition = "2021"
[lib]
path = "src/lib.rs"
name = "lib"
crate-type = ["cdylib"]
[dependencies]
cxx = { version = "1.0", features = ["c++20"] }
[build-dependencies]
cxx-build = "1.0"CMakeLists for the executable (part of a giant template, so it's not the full picture): add_executable(
fileDiffCLI
main.cpp
)
add_executable(dev::fileDiffCLI ALIAS fileDiffCLI)
target_link_libraries(fileDiffCLI PRIVATE dev_options dev_warnings)
target_link_libraries(fileDiffCLI PUBLIC lib)
target_include_directories(
fileDiffCLI
${WARNING_GUARD}
PUBLIC
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/bin/fileDiffCLI>
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/lib/target/cxxbridge/lib>
$<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/bin/fileDiffCLI>
)
target_compile_features(fileDiffCLI PUBLIC cxx_std_20)
set_target_properties(
fileDiffCLI
PROPERTIES
VERSION ${PROJECT_VERSION}
CXX_VISIBILITY_PRESET hidden
VISIBILITY_INLINES_HIDDEN YES
)
if(BUILD_TESTING)
message(TRACE "Building tests...")
add_subdirectory(test)
endif()
add_custom_command(
TARGET
fileDiffCLI
POST_BUILD
COMMAND
${CMAKE_COMMAND} -E copy $<TARGET_FILE:fileDiffCLI> ${PROJECT_SOURCE_DIR}/target
)The include(cmake/CPM.cmake)
include(cmake/AddDir.cmake)
function(dev_deps_setup)
if(NOT TARGET lib)
CPMAddPackage(
NAME corrosion
VERSION 0.5
GITHUB_REPOSITORY
"corrosion-rs/corrosion"
)
# creates a directory if it doesn't already exist.
dev_add_dir("${CMAKE_BINARY_DIR}/lib")
corrosion_import_crate(
MANIFEST_PATH
${CMAKE_SOURCE_DIR}/lib/Cargo.toml
)
set_target_properties(
lib
PROPERTIES
ARCHIVE_OUTPUT_DIRECTORY
${CMAKE_BINARY_DIR}/lib
)
set_target_properties(
lib
PROPERTIES
LIBRARY_OUTPUT_DIRECTORY
${CMAKE_BINARY_DIR}/lib
)
set_target_properties(
lib
PROPERTIES
RUNTIME_OUTPUT_DIRECTORY
${CMAKE_BINARY_DIR}/lib
)
endif()
endfunction()Finally, this is the build log using
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My project uses CMake and
corrosion-rsfor C++ and Rust interopt. I've got an executable written in C++ and a Rustcdyliblibrary.The Rust library contains the following:
I'm adding the library as a target via
corrosion-rsand linking it with the executable as follows:The C++ code isn't even trying to call that
greetfunction yet, because the entire setup is failing during building of the Rust library.When I run the configure step I get the following log, with
--log-level=DebugSo far so good, some of these
*-NOTFOUNDare a bit worrysome, but it's probably me not settingARCHIVE_OUTPUT_DIRECTORYexplicitly for the target pulled by corrosionRunning
cmake --build build --config Debug --verbosereveals a lot of errors related to the standard not being C++14 or above, but not for the user code (since i'm not trying to use C++ code in Rust) and instead of thecxx.ccMy specs if it helps:
clang++andclangrespectivelyCargo.tomlCargo.tomlI suppose it would help if I was able to explicitly set the
cxxcompile flag to something abovec++11, but I'm not sure if I can do that and adding.std("c++20")to the chain inbuild.rsdidn't helpThe text was updated successfully, but these errors were encountered: