Make sure COSE Rust Debug/Release is consistent with CCF (#7823)

Author: maxtropets

cmake/cose_openssl.cmake

@@ -11,9 +11,41 @@ set(COSE_RS_CARGO_TARGET_DIR "${CMAKE_BINARY_DIR}/cargo/build")
 find_program(CARGO NAMES cargo REQUIRED)
 find_program(RUSTC NAMES rustc REQUIRED)
 
-# This path depends on Cargo's default host-layout target/release path. CMake
+# Multi-config generators (Visual Studio, Xcode, Ninja Multi-Config) choose the
+# build type at build time, but Cargo profile selection happens at configure
+# time. Reject them so the Rust library is never silently built with the wrong
+# profile.
+if(CMAKE_CONFIGURATION_TYPES)
+  message(
+    FATAL_ERROR
+    "Multi-config generators are not supported for the Rust cose-rs build. "
+    "Use a single-config generator (e.g. -GNinja) and set CMAKE_BUILD_TYPE instead."
+  )
+endif()
+
+# Map CMAKE_BUILD_TYPE to a Cargo profile. Debug uses the Cargo dev profile for
+# faster compilation; all other build types use the release profile with LTO.
+if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+  set(COSE_RS_CARGO_PROFILE_FLAG "")
+  set(COSE_RS_CARGO_PROFILE_DIR "debug")
+  set(COSE_RS_CARGO_PROFILE_NAME "dev")
+else()
+  set(COSE_RS_CARGO_PROFILE_FLAG "--release")
+  set(COSE_RS_CARGO_PROFILE_DIR "release")
+  set(COSE_RS_CARGO_PROFILE_NAME "release")
+endif()
+
+message(
+  STATUS
+  "Rust cose-rs: CMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} -> Cargo profile '${COSE_RS_CARGO_PROFILE_NAME}'"
+)
+
+# This path depends on Cargo's default host-layout target/<profile> path. CMake
 # intentionally reruns Cargo and lets Cargo decide whether the Rust inputs are dirty.
-set(COSE_RS_CARGO_LIB_PATH "${COSE_RS_CARGO_TARGET_DIR}/release/${COSE_RS_LIB}")
+set(
+  COSE_RS_CARGO_LIB_PATH
+  "${COSE_RS_CARGO_TARGET_DIR}/${COSE_RS_CARGO_PROFILE_DIR}/${COSE_RS_LIB}"
+)
 
 # Reproducible builds: remap absolute paths in the binary. RUSTFLAGS applies to
 # all crates, including dependencies.
@@ -32,7 +64,7 @@ add_custom_target(
     "CXX=${CMAKE_CXX_COMPILER}" "AR=${CMAKE_AR}" "CARGO_BUILD_RUSTC=${RUSTC}"
     "${CARGO}" build --lib --package "${COSE_RS_PACKAGE}" --manifest-path
     "${COSE_RS_MANIFEST_PATH}" --target-dir "${COSE_RS_CARGO_TARGET_DIR}"
-    --release --locked
+    ${COSE_RS_CARGO_PROFILE_FLAG} --locked
   COMMAND
     "${CMAKE_COMMAND}" -E copy_if_different "${COSE_RS_CARGO_LIB_PATH}"
     "${CMAKE_BINARY_DIR}"
@@ -42,7 +74,8 @@ add_custom_target(
     "${COSE_RS_DIR}/Cargo.lock"
     "${COSE_RS_DIR}/rust-toolchain.toml"
     "${CCF_DIR}/3rdparty/internal/cose-openssl/Cargo.toml"
-  COMMENT "Building ${COSE_RS_PACKAGE} Rust static library via Cargo"
+  COMMENT
+    "Building ${COSE_RS_PACKAGE} Rust static library (Cargo profile: ${COSE_RS_CARGO_PROFILE_NAME})"
   USES_TERMINAL
   VERBATIM
 )