fish-shell/cmake/Rust.cmake
Mahmoud Al-Qudsi b17124d8d2 Add rsconf build system and check for gettext symbols
This is more complicated than it needs to be thanks to the presence of CMake and
the C++ ffi in the picture. rsconf can correctly detect the required libraries
and instruct rustc to link against them, but since we generate a static rust
library and have CMake link it against the C++ binaries, we are still at the
mercy of CMake picking up the symbols we want.

Unfortunately, we could detect the gettext symbols but discover at runtime that
they weren't linked in because CMake was compiled with `-DWITH_GETTEXT=0` or
similar (as the macOS CI runner does). This means we also need to pass state
between CMake and our build script to communicate which CMake options were
enabled.
2023-05-25 16:54:03 -05:00

86 lines
2.8 KiB
CMake

if(EXISTS "${CMAKE_SOURCE_DIR}/corrosion-vendor/")
add_subdirectory("${CMAKE_SOURCE_DIR}/corrosion-vendor/")
else()
include(FetchContent)
# Don't let Corrosion's tests interfere with ours.
set(CORROSION_TESTS OFF CACHE BOOL "" FORCE)
FetchContent_Declare(
Corrosion
GIT_REPOSITORY https://github.com/mqudsi/corrosion
GIT_TAG fish
)
FetchContent_MakeAvailable(Corrosion)
add_custom_target(corrosion-vendor.tar.gz
COMMAND git archive --format tar.gz --output "${CMAKE_BINARY_DIR}/corrosion-vendor.tar.gz"
--prefix corrosion-vendor/ HEAD
WORKING_DIRECTORY ${corrosion_SOURCE_DIR}
)
endif()
set(fish_rust_target "fish-rust")
set(fish_autocxx_gen_dir "${CMAKE_BINARY_DIR}/fish-autocxx-gen/")
set(FISH_CRATE_FEATURES "fish-ffi-tests")
if(NOT DEFINED CARGO_FLAGS)
# Corrosion doesn't like an empty string as FLAGS. This is basically a no-op alternative.
# See https://github.com/corrosion-rs/corrosion/issues/356
set(CARGO_FLAGS "--config" "foo=0")
endif()
if(DEFINED ASAN)
list(APPEND CARGO_FLAGS "-Z" "build-std")
list(APPEND FISH_CRATE_FEATURES "asan")
endif()
corrosion_import_crate(
MANIFEST_PATH "${CMAKE_SOURCE_DIR}/fish-rust/Cargo.toml"
FEATURES "${FISH_CRATE_FEATURES}"
FLAGS "${CARGO_FLAGS}"
)
# We need the build dir because cxx puts our headers in there.
# Corrosion doesn't expose the build dir, so poke where we shouldn't.
if (Rust_CARGO_TARGET)
set(rust_target_dir "${CMAKE_BINARY_DIR}/cargo/build/${_CORROSION_RUST_CARGO_TARGET}")
else()
set(rust_target_dir "${CMAKE_BINARY_DIR}/cargo/build/${_CORROSION_RUST_CARGO_HOST_TARGET}")
corrosion_set_hostbuild(${fish_rust_target})
endif()
# Temporary hack to propogate CMake flags/options to build.rs. We need to get CMake to evaluate the
# truthiness of the strings if they are set.
set(CMAKE_WITH_GETTEXT "1")
if(DEFINED WITH_GETTEXT AND NOT "${WITH_GETTEXT}")
set(CMAKE_WITH_GETTEXT "0")
endif()
# Tell Cargo where our build directory is so it can find config.h.
corrosion_set_env_vars(${fish_rust_target}
"FISH_BUILD_DIR=${CMAKE_BINARY_DIR}"
"FISH_AUTOCXX_GEN_DIR=${fish_autocxx_gen_dir}"
"FISH_RUST_TARGET_DIR=${rust_target_dir}"
"PREFIX=${CMAKE_INSTALL_PREFIX}"
# Temporary hack to propogate CMake flags/options to build.rs.
"CMAKE_WITH_GETTEXT=${CMAKE_WITH_GETTEXT}"
)
target_include_directories(${fish_rust_target} INTERFACE
"${rust_target_dir}/cxxbridge/${fish_rust_target}/src/"
"${fish_autocxx_gen_dir}/include/"
)
# Tell fish what extra C++ files to compile.
define_property(
TARGET PROPERTY fish_extra_cpp_files
BRIEF_DOCS "Extra C++ files to compile for fish."
FULL_DOCS "Extra C++ files to compile for fish."
)
set_property(TARGET ${fish_rust_target} PROPERTY fish_extra_cpp_files
"${fish_autocxx_gen_dir}/cxx/gen0.cxx"
)