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Make it possible to build the slint-cpp crate as a static library

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This isn't supported on desktop yet, but on MCU it is.

Cargo is instructed to build a dylib and a staticlib, but corrosion
instructs rustc to build only either dylib or staticlib.

Corrosion listens to the BUILD_SHARED_LIBS option and will change the
default for the Slint::Slint INTERFACE_LINK_LIBRARIES to either
slint-cpp-shared or slint-cpp-static. This way the selection is
transparent to the users.
This commit is contained in:
Simon Hausmann 2023-07-21 12:53:50 +02:00 • committed by Simon Hausmann
parent 53355a6e9e
commit e9286c1189
3 changed files with 19 additions and 8 deletions
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21
api/cpp/CMakeLists.txt
View file

@ -18,14 +18,25 @@ FetchContent_MakeAvailable(Corrosion)
list(PREPEND CMAKE_MODULE_PATH ${Corrosion_SOURCE_DIR}/cmake)
find_package(Rust 1.66 REQUIRED MODULE)
option(BUILD_SHARED_LIBS "Build Slint as shared library" ON)
option(SLINT_FEATURE_COMPILER "Enable support for compiling .slint files to C++ ahead of time" ON)
if(SLINT_FEATURE_COMPILER)
set(slint_compiler_crate "slint-compiler")
endif()
if(BUILD_SHARED_LIBS)
set(rustc_lib_type "cdylib")
set(slint_cpp_impl "slint-cpp-shared")
set(cmake_lib_type "SHARED")
else()
set(rustc_lib_type "staticlib")
set(slint_cpp_impl "slint-cpp-static")
set(cmake_lib_type "STATIC")
endif()
corrosion_import_crate(MANIFEST_PATH "${CMAKE_CURRENT_SOURCE_DIR}/../../Cargo.toml"
CRATES slint-cpp ${slint_compiler_crate})
CRATES slint-cpp ${slint_compiler_crate} CRATE_TYPES bin ${rustc_lib_type})
set(SLINT_TARGET_CARGO_FLAGS "" CACHE STRING
"Flags to pass to cargo when building the Slint runtime library")
@ -40,7 +51,7 @@ endif()
# include the binary dir and thus our examples would have the correct rpath set, binaries
# outside (i.e. applications using Slint via FetchContent) would not and the BUILD_RPATH
# target property doesn't propagate :(
if (APPLE AND SLINT_IS_TOPLEVEL_BUILD)
if (APPLE AND SLINT_IS_TOPLEVEL_BUILD AND BUILD_SHARED_LIBS)
# corrosion could provide the Cargo.toml package version as a CMake target property.
corrosion_add_target_local_rustflags(slint-cpp -Clink-arg=-Wl,-install_name,@rpath/libslint_cpp.dylib,-current_version,${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR},-compatibility_version,${PROJECT_VERSION_MAJOR}.0)
# Set this one to false again explicitely because Corrosion will starting setting this property to true by default.
@ -285,10 +296,10 @@ install(TARGETS Slint slint-cpp
include(CMakePackageConfigHelpers)
include(GNUInstallDirs)
install(FILES $<TARGET_FILE:slint-cpp-shared> TYPE LIB)
install(FILES $<TARGET_FILE:${slint_cpp_impl}> TYPE LIB)
if(WIN32)
install(FILES $<TARGET_LINKER_FILE:slint-cpp-shared> TYPE LIB)
install(FILES $<TARGET_LINKER_FILE:${slint_cpp_impl}> TYPE LIB)
endif()
if(SLINT_FEATURE_COMPILER)
@ -305,7 +316,7 @@ function(_slint_write_configure_file)
IMPORTED_LOCATION_RELWITHDEBINFO IMPORTED_LOCATION_MINSIZEREL
IMPORTED_IMPLIB IMPORTED_IMPLIB_DEBUG IMPORTED_IMPLIB_RELEASE
IMPORTED_IMPLIB_RELWITHDEBINFO IMPORTED_IMPLIB_MINSIZEREL)
get_target_property(value slint-cpp-shared ${prop})
get_target_property(value ${slint_cpp_impl} ${prop})
if(value)
get_filename_component(value ${value} NAME)

2
api/cpp/Cargo.toml
View file

@ -18,7 +18,7 @@ links = "slint_cpp"
[lib]
path = "lib.rs"
crate-type = ["lib", "cdylib"]
crate-type = ["lib", "cdylib", "staticlib"]
# Note, these features need to be kept in sync (along with their defaults) in
# the C++ crate's CMakeLists.txt

4
api/cpp/cmake/SlintConfig.cmake.in
View file

@ -11,8 +11,8 @@ if(_IMPORT_PREFIX STREQUAL "/")
set(_IMPORT_PREFIX "")
endif()
add_library(slint-cpp-shared SHARED IMPORTED)
set_target_properties(slint-cpp-shared PROPERTIES @SLINT_LIB_PROPERTIES@)
add_library(@slint_cpp_impl@ @cmake_lib_type@ IMPORTED)
set_target_properties(@slint_cpp_impl@ PROPERTIES @SLINT_LIB_PROPERTIES@)
if (@SLINT_FEATURE_COMPILER@)
add_executable(Slint::slint-compiler IMPORTED GLOBAL)