| # Additional interop for things like macros and inlined functions. |
| add_library(rust_wrapper STATIC rust_wrapper.c) |
| target_link_libraries(rust_wrapper crypto) |
| |
| # Generate architecture-specific wrappers. bindgen must be called from |
| # ${CMAKE_BINARY_DIR}, with the output path as a relative path. bindgen writes |
| # the depfile using the same syntax as the command-line argument, and ninja |
| # requires a path relative to the top-level build directory. |
| set(wrapper src/wrapper_${RUST_BINDINGS}.rs) |
| binary_dir_relative_path(${wrapper} wrapper_relative) |
| binary_dir_relative_path(${wrapper}.d depfile_relative) |
| |
| add_custom_command( |
| OUTPUT ${wrapper} |
| COMMAND ${BINDGEN_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/wrapper.h |
| -o ${wrapper_relative} |
| --depfile=${depfile_relative} |
| --no-derive-default |
| --enable-function-attribute-detection |
| --use-core |
| --default-macro-constant-type=signed |
| --rustified-enum=point_conversion_form_t |
| # These regexes need to accept both / and \ to handle Windows file |
| # path differences, due a bindgen issue. See |
| # https://crbug.com/boringssl/595. Ideally, we would write [/\\], but |
| # there are many layers of escaping here. First, CMake interprets |
| # backslashes. Then CMake generates a Ninja or Make file. That, in |
| # turn, uses the shell on POSIX, and does something else on Windows. |
| # |
| # It is unlikely that every layer here has sufficiently well-defined |
| # escaping and correctly handled the next layer's escaping. On top of |
| # that, we'd likely need to detect Windows vs POSIX hosts and change |
| # the input. Instead, just use [[:punct:]] which is more permissive |
| # than necessary, but we only need to exclude unwanted libc headers. |
| # |
| # If bindgen ever supports some file-based config (see |
| # https://github.com/rust-lang/rust-bindgen/issues/2508), we can |
| # switch to that. |
| --allowlist-file=".*[[:punct:]]include[[:punct:]]openssl[[:punct:]].*\\.h" |
| --allowlist-file=".*[[:punct:]]rust_wrapper\\.h" |
| -- # these are LLVM arg passthroughs |
| -I${PROJECT_SOURCE_DIR}/include |
| # https://doc.rust-lang.org/nightly/rustc/platform-support.html |
| --target=${RUST_BINDINGS} |
| DEPENDS wrapper.h |
| DEPFILE ${CMAKE_CURRENT_BINARY_DIR}/${wrapper}.d |
| WORKING_DIRECTORY ${CMAKE_BINARY_DIR} |
| ) |
| add_custom_target(bssl_sys ALL DEPENDS ${wrapper}) |
| |
| # move files into build directory |
| configure_file("src/lib.rs" "src/lib.rs") |
| |
| if(NOT BUILD_SHARED_LIBS) |
| configure_file("build.rs" "build.rs" COPYONLY) |
| endif() |
| |
| configure_file("Cargo.toml" "Cargo.toml" COPYONLY) |