treewide: Update deprecated CONFIG_LIB_CPLUSPLUS usages

This commit updates all deprecated `CONFIG_LIB_CPLUSPLUS` usages to:

* check if the Zephyr minimal C++ library is enabled using
  `CONFIG_MINIMAL_LIBCPP` instead of relying on the
  `CONFIG_LIB_CPLUSPLUS`-based inference.

* select `CONFIG_REQUIRES_FULL_LIBCPP` when there exists a component-
  level C++ standard library dependency. This allows a component to
  declare C++ standard library dependency without designating a
  specific libray implementation.

* select the correct type of C++ standard library implementation to use
  through one of the `CONFIG_LIBCPP_IMPLEMENTATION` choices.

Signed-off-by: Stephanos Ioannidis <stephanos.ioannidis@nordicsemi.no>

CMakeLists.txt

@@ -339,7 +339,7 @@ if(NOT CONFIG_NATIVE_APPLICATION)
   toolchain_ld_baremetal()
 endif()
 
-if(CONFIG_LIB_CPLUSPLUS)
+if(NOT CONFIG_MINIMAL_LIBCPP)
   # @Intent: Set linker specific flags for C++
   toolchain_ld_cpp()
 endif()
@@ -1881,7 +1881,7 @@ endif()
 zephyr_compile_options($<TARGET_PROPERTY:compiler,nostdinc>)
 target_include_directories(zephyr_interface SYSTEM INTERFACE $<TARGET_PROPERTY:compiler,nostdinc_include>)
 
-if(NOT CONFIG_LIB_CPLUSPLUS)
+if(CONFIG_MINIMAL_LIBCPP)
   zephyr_compile_options($<$<COMPILE_LANGUAGE:CXX>:$<TARGET_PROPERTY:compiler-cpp,nostdincxx>>)
 endif()
 

modules/tflite-micro/Kconfig

@@ -7,6 +7,7 @@ config ZEPHYR_TFLITE-MICRO_MODULE
 
 config TENSORFLOW_LITE_MICRO
 	bool "TensorFlow Lite Micro Support"
+	select REQUIRES_FULL_LIBCPP
 	help
 	  This option enables the TensorFlow Lite Micro library.
 

samples/modules/chre/prj.conf

@@ -5,5 +5,4 @@ CONFIG_CHRE_LOG_LEVEL_DBG=y
 
 CONFIG_CPP=y
 CONFIG_STD_CPP17=y
-CONFIG_LIB_CPLUSPLUS=y
 CONFIG_CPP_MAIN=y

samples/modules/tflite-micro/hello_world/prj.conf

@@ -13,7 +13,5 @@
 # limitations under the License.
 # ==============================================================================s
 CONFIG_CPP=y
-CONFIG_LIB_CPLUSPLUS=y
-CONFIG_NEWLIB_LIBC=y
 CONFIG_TENSORFLOW_LITE_MICRO=y
 CONFIG_MAIN_STACK_SIZE=2048

samples/modules/tflite-micro/magic_wand/prj.conf

@@ -13,8 +13,6 @@
 # limitations under the License.
 # ==============================================================================
 CONFIG_CPP=y
-CONFIG_LIB_CPLUSPLUS=y
-CONFIG_NEWLIB_LIBC=y
 CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y
 CONFIG_SENSOR=y
 CONFIG_NETWORKING=n

samples/modules/tflite-micro/tflm_ethosu/prj.conf

@@ -1,8 +1,6 @@
 #application default configuration
 # include TFLM based on CMSIS NN optimization and ETHOSU acceleration
 CONFIG_CPP=y
-CONFIG_LIB_CPLUSPLUS=y
-CONFIG_NEWLIB_LIBC=y
 CONFIG_TENSORFLOW_LITE_MICRO=y
 CONFIG_ARM_ETHOS_U=y
 CONFIG_HEAP_MEM_POOL_SIZE=16384

tests/lib/cpp/libcxx/prj.conf

@@ -1,5 +1,4 @@
 CONFIG_CPP=y
-CONFIG_LIB_CPLUSPLUS=y
 CONFIG_STD_CPP17=y
 CONFIG_ZTEST=y
 CONFIG_ZTEST_STACK_SIZE=5120

tests/lib/cpp/libcxx/testcase.yaml

@@ -1,5 +1,5 @@
 tests:
-  cpp.libcxx.newlib:
+  cpp.libcxx.glibcxx.newlib:
     filter: TOOLCHAIN_HAS_NEWLIB == 1
     toolchain_exclude: xcc
     min_flash: 54
@@ -7,10 +7,11 @@ tests:
     tags: cpp
     extra_configs:
       - CONFIG_NEWLIB_LIBC=y
+      - CONFIG_GLIBCXX_LIBCPP=y
       - CONFIG_CPP_EXCEPTIONS=y
     integration_platforms:
       - mps2_an385
-  cpp.libcxx.newlib_nano:
+  cpp.libcxx.glibcxx.newlib_nano:
     filter: TOOLCHAIN_HAS_NEWLIB == 1
     toolchain_exclude: xcc
     min_flash: 54
@@ -19,6 +20,7 @@ tests:
     extra_configs:
       - CONFIG_NEWLIB_LIBC=y
       - CONFIG_NEWLIB_LIBC_NANO=y
+      - CONFIG_GLIBCXX_LIBCPP=y
     integration_platforms:
       - mps2_an385
   cpp.libcxx.arcmwdtlib:
@@ -27,3 +29,4 @@ tests:
     tags: cpp
     extra_configs:
       - CONFIG_ARCMWDT_LIBC=y
+      - CONFIG_ARCMWDT_LIBCPP=y

tests/ztest/base/prj_cpp.conf

@@ -2,4 +2,3 @@ CONFIG_ZTEST=y
 CONFIG_ZTEST_NEW_API=y
 
 CONFIG_CPP=y
-CONFIG_LIB_CPLUSPLUS=y

tests/ztest/fail/core/prj.conf

@@ -5,4 +5,3 @@ CONFIG_ZTEST=y
 CONFIG_ZTEST_NEW_API=y
 
 CONFIG_CPP=y
-CONFIG_LIB_CPLUSPLUS=y

tests/ztest/fail/prj.conf

@@ -5,4 +5,4 @@ CONFIG_ZTEST=y
 CONFIG_ZTEST_NEW_API=y
 
 CONFIG_CPP=y
-CONFIG_LIB_CPLUSPLUS=y
+CONFIG_EXTERNAL_LIBCPP=y

west.yml

@@ -29,7 +29,7 @@ manifest:
       revision: dec12fa3f0d790cafa8414a4c2930ea71ab72ffd
       path: modules/lib/canopennode
     - name: chre
-      revision: fe0ab36e0fa7453a4c9b97bedac89709f45cf965
+      revision: b7955c27e50485b7dafdc3888d7d6afdc2ac6d96
       path: modules/lib/chre
     - name: cmsis
       revision: 74981bf893e8b10931464b9945e2143d99a3f0a3