Added ability to import a crate containing lib and bin targets with the same name

cmake/CorrosionGenerator.cmake

@@ -50,7 +50,9 @@ function(_generator_add_package_targets)
         PACKAGE_NAME
         PACKAGE_VERSION
         TARGETS_JSON
-        OUT_CREATED_TARGETS)
+        OUT_CREATED_TARGETS
+        BIN_NAMESPACE 
+        LIB_NAMESPACE)
     set(MULTI_VALUE_KEYWORDS CRATE_TYPES OVERRIDE_CRATE_TYPE_ARGS)
     cmake_parse_arguments(PARSE_ARGV 0 GAPT "${OPTIONS}" "${ONE_VALUE_KEYWORDS}" "${MULTI_VALUE_KEYWORDS}")
 
@@ -112,13 +114,22 @@ function(_generator_add_package_targets)
                 endif()
             endforeach()
         endif()
-        if(TARGET "${target_name}"
+
+        if(("staticlib" IN_LIST kinds OR "cdylib" IN_LIST kinds) AND GAPT_LIB_NAMESPACE)
+            set(target_name_cmake "${GAPT_LIB_NAMESPACE}::${target_name}")
+        elseif(("bin" IN_LIST kinds) AND GAPT_BIN_NAMESPACE)
+            set(target_name_cmake "${GAPT_BIN_NAMESPACE}::${target_name}")
+        else()
+            set(target_name_cmake "${target_name}")
+        endif()
+
+        if(TARGET "${target_name_cmake}"
             AND ("staticlib" IN_LIST kinds OR "cdylib" IN_LIST kinds OR "bin" IN_LIST kinds)
             )
             message(WARNING "Failed to import Rust crate ${target_name} (kind: `${target_kind}`) because a target "
                 "with the same name already exists. Skipping this target.\n"
                 "Help: If you are importing a package which exposes both a `lib` and "
-                "a `bin` target, please consider explicitly naming the targets in your `Cargo.toml` manifest.\n"
+                "a `bin` target, use the LIB_NAMESPACE and BIN_NAMESPACE options to import them into separate namespaces.\n"
                 "Note: If you have multiple different packages which have targets with the same name, please note that "
                 "this is currently not supported by Corrosion. Feel free to open an issue on Github to request "
                 "supporting this scenario."
@@ -134,16 +145,18 @@ function(_generator_add_package_targets)
             # name consistent independent of the Rust version. `bin` target names are not affected.
             # See https://github.com/corrosion-rs/corrosion/issues/501 for more details.
             string(REPLACE "\-" "_" target_name "${target_name}")
+            string(REPLACE "\-" "_" target_name_cmake "${target_name_cmake}")
 
             set(archive_byproducts "")
             set(shared_lib_byproduct "")
             set(pdb_byproduct "")
 
-            add_library(${target_name} INTERFACE)
-            _corrosion_initialize_properties(${target_name})
+            add_library(${target_name_cmake} INTERFACE IMPORTED GLOBAL)
+            _corrosion_initialize_properties(${target_name_cmake})
             _corrosion_add_library_target(
                 WORKSPACE_MANIFEST_PATH "${workspace_manifest_path}"
                 TARGET_NAME "${target_name}"
+                TARGET_NAME_CMAKE "${target_name_cmake}"
                 LIB_KINDS ${kinds}
                 OUT_ARCHIVE_OUTPUT_BYPRODUCTS archive_byproducts
                 OUT_SHARED_LIB_BYPRODUCTS shared_lib_byproduct
@@ -158,6 +171,7 @@ function(_generator_add_package_targets)
                 cargo_build_out_dir
                 PACKAGE ${package_name}
                 TARGET ${target_name}
+                TARGET_NAME_CMAKE ${target_name_cmake}
                 MANIFEST_PATH "${manifest_path}"
                 WORKSPACE_MANIFEST_PATH "${workspace_manifest_path}"
                 TARGET_KINDS "${kinds}"
@@ -167,28 +181,28 @@ function(_generator_add_package_targets)
             )
             if(archive_byproducts)
                 _corrosion_copy_byproducts(
-                    ${target_name} ARCHIVE_OUTPUT_DIRECTORY "${cargo_build_out_dir}" "${archive_byproducts}"
+                    ${target_name_cmake} ARCHIVE_OUTPUT_DIRECTORY "${cargo_build_out_dir}" "${archive_byproducts}"
                 )
             endif()
             if(shared_lib_byproduct)
                 _corrosion_copy_byproducts(
-                    ${target_name} LIBRARY_OUTPUT_DIRECTORY "${cargo_build_out_dir}" "${shared_lib_byproduct}"
+                    ${target_name_cmake} LIBRARY_OUTPUT_DIRECTORY "${cargo_build_out_dir}" "${shared_lib_byproduct}"
                 )
             endif()
             if(pdb_byproduct)
                 _corrosion_copy_byproducts(
-                    ${target_name} "PDB_OUTPUT_DIRECTORY;LIBRARY_OUTPUT_DIRECTORY" "${cargo_build_out_dir}" "${pdb_byproduct}"
+                    ${target_name_cmake} "PDB_OUTPUT_DIRECTORY;LIBRARY_OUTPUT_DIRECTORY" "${cargo_build_out_dir}" "${pdb_byproduct}"
                 )
             endif()
-            list(APPEND corrosion_targets ${target_name})
-            set_property(TARGET "${target_name}" PROPERTY COR_CARGO_PACKAGE_NAME "${package_name}" )
+            list(APPEND corrosion_targets ${target_name_cmake})
+            set_property(TARGET "${target_name_cmake}" PROPERTY COR_CARGO_PACKAGE_NAME "${package_name}" )
         # Note: "bin" is mutually exclusive with "staticlib/cdylib", since `bin`s are seperate crates from libraries.
         elseif("bin" IN_LIST kinds)
             set(bin_byproduct "")
             set(pdb_byproduct "")
-            add_executable(${target_name} IMPORTED GLOBAL)
-            _corrosion_initialize_properties(${target_name})
-            _corrosion_add_bin_target("${workspace_manifest_path}" "${target_name}"
+            add_executable(${target_name_cmake} IMPORTED GLOBAL)
+            _corrosion_initialize_properties(${target_name_cmake})
+            _corrosion_add_bin_target("${workspace_manifest_path}" "${target_name}" "${target_name_cmake}"
                 "bin_byproduct" "pdb_byproduct"
             )
 
@@ -200,6 +214,7 @@ function(_generator_add_package_targets)
                 cargo_build_out_dir
                 PACKAGE "${package_name}"
                 TARGET "${target_name}"
+                TARGET_NAME_CMAKE ${target_name_cmake}
                 MANIFEST_PATH "${manifest_path}"
                 WORKSPACE_MANIFEST_PATH "${workspace_manifest_path}"
                 TARGET_KINDS "bin"
@@ -208,15 +223,15 @@ function(_generator_add_package_targets)
                 ${no_linker_override}
             )
             _corrosion_copy_byproducts(
-                    ${target_name} RUNTIME_OUTPUT_DIRECTORY "${cargo_build_out_dir}" "${bin_byproduct}"
+                    ${target_name_cmake} RUNTIME_OUTPUT_DIRECTORY "${cargo_build_out_dir}" "${bin_byproduct}"
             )
             if(pdb_byproduct)
                 _corrosion_copy_byproducts(
-                        ${target_name} "PDB_OUTPUT_DIRECTORY;RUNTIME_OUTPUT_DIRECTORY" "${cargo_build_out_dir}" "${pdb_byproduct}"
+                        ${target_name_cmake} "PDB_OUTPUT_DIRECTORY;RUNTIME_OUTPUT_DIRECTORY" "${cargo_build_out_dir}" "${pdb_byproduct}"
                 )
             endif()
-            list(APPEND corrosion_targets ${target_name})
-            set_property(TARGET "${target_name}" PROPERTY COR_CARGO_PACKAGE_NAME "${package_name}" )
+            list(APPEND corrosion_targets ${target_name_cmake})
+            set_property(TARGET "${target_name_cmake}" PROPERTY COR_CARGO_PACKAGE_NAME "${package_name}" )
         else()
             # ignore other kinds (like examples, tests, build scripts, ...)
         endif()
@@ -235,7 +250,7 @@ endfunction()
 # `MANIFEST_PATH`.
 function(_generator_add_cargo_targets)
     set(options NO_LINKER_OVERRIDE)
-    set(one_value_args MANIFEST_PATH IMPORTED_CRATES)
+    set(one_value_args MANIFEST_PATH IMPORTED_CRATES BIN_NAMESPACE LIB_NAMESPACE)
     set(multi_value_args CRATES CRATE_TYPES OVERRIDE_CRATE_TYPE_ARGS)
     cmake_parse_arguments(
         GGC
@@ -247,6 +262,8 @@ function(_generator_add_cargo_targets)
     list(APPEND CMAKE_MESSAGE_CONTEXT "_add_cargo_targets")
 
     _corrosion_option_passthrough_helper(NO_LINKER_OVERRIDE GGC no_linker_override)
+    _corrosion_arg_passthrough_helper(BIN_NAMESPACE COR bin_namespace)
+    _corrosion_arg_passthrough_helper(LIB_NAMESPACE COR lib_namespace)
     _corrosion_arg_passthrough_helper(CRATE_TYPES GGC crate_types)
     _corrosion_arg_passthrough_helper(OVERRIDE_CRATE_TYPE_ARGS GGC override_crate_types)
 
@@ -309,6 +326,8 @@ function(_generator_add_cargo_targets)
             ${no_linker_override}
             ${crate_types}
             ${override_crate_types}
+            ${bin_namespace}
+            ${lib_namespace}
         )
         list(APPEND created_targets "${curr_created_targets}")
     endforeach()

test/CMakeLists.txt

@@ -181,6 +181,7 @@ add_subdirectory(gensource)
 add_subdirectory(hostbuild)
 add_subdirectory(multitarget)
 add_subdirectory(nostd)
+add_subdirectory(one_package_bin_and_lib)
 add_subdirectory("output directory")
 add_subdirectory(parse_target_triple)
 add_subdirectory(rust2cpp)

test/one_package_bin_and_lib/CMakeLists.txt

@@ -0,0 +1,6 @@
+corrosion_tests_add_test(one_package_bin_and_lib "my_program")
+
+set_tests_properties("one_package_bin_and_lib_run_my_program" PROPERTIES PASS_REGULAR_EXPRESSION
+        "^Ok\r?\n$"
+        )
+

test/one_package_bin_and_lib/one_package_bin_and_lib/CMakeLists.txt

@@ -0,0 +1,16 @@
+cmake_minimum_required(VERSION 3.15)
+project(test_project VERSION 0.1.0)
+include(../../test_header.cmake)
+
+corrosion_import_crate(
+    MANIFEST_PATH ${CMAKE_CURRENT_SOURCE_DIR}/Cargo.toml
+    BIN_NAMESPACE bin LIB_NAMESPACE lib
+)
+
+if(NOT TARGET bin::mycrate)
+    message(FATAL_ERROR "Unable to import bin::mycrate.")
+endif()
+
+add_executable(my_program main.cpp)
+target_link_libraries(my_program PUBLIC lib::mycrate)
+

test/one_package_bin_and_lib/one_package_bin_and_lib/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "mycrate"
+version = "0.1.0"
+edition = "2018"
+description = "descr;\"hello\\"
+
+[lib]
+crate-type = ["staticlib", "rlib"]
+name = "mycrate"

test/one_package_bin_and_lib/one_package_bin_and_lib/main.cpp

@@ -0,0 +1,4 @@
+#include <iostream>
+int main() {
+        std::cout << "Ok";
+}

test/one_package_bin_and_lib/one_package_bin_and_lib/src/lib.rs

@@ -0,0 +1,3 @@
+pub fn hello() {
+    println!("Hello world");
+}

test/one_package_bin_and_lib/one_package_bin_and_lib/src/main.rs

@@ -0,0 +1,5 @@
+use mycrate::hello;
+
+fn main() {
+    hello();
+}