cmake: toolchain: print what we find

Print the name of the discovered toolchain as well as the variable
used to initialize it.

This is nice to know when doing remote support, since users will
sometimes misconfigure their toolchain and not know what that means.

Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>

cmake/toolchain/cross-compile/generic.cmake

@@ -27,3 +27,5 @@ assert(CROSS_COMPILE "CROSS_COMPILE is not set")
 set(COMPILER gcc)
 set(LINKER ld)
 set(BINTOOLS gnu)
+
+message(STATUS "Found toolchain: cross-compile (${CROSS_COMPILE})")

cmake/toolchain/espressif/generic.cmake

@@ -18,3 +18,4 @@ set(SYSROOT_DIR   ${TOOLCHAIN_HOME}/${SYSROOT_TARGET})
 
 set(TOOLCHAIN_HAS_NEWLIB ON CACHE BOOL "True if toolchain supports newlib")
 
+message(STATUS "Found toolchain: espressif (${ESPRESSIF_TOOLCHAIN_PATH})")

cmake/toolchain/gnuarmemb/generic.cmake

@@ -28,3 +28,5 @@ set(SYSROOT_TARGET       arm-none-eabi)
 set(CROSS_COMPILE ${TOOLCHAIN_HOME}/bin/${CROSS_COMPILE_TARGET}-)
 set(SYSROOT_DIR   ${TOOLCHAIN_HOME}/${SYSROOT_TARGET})
 set(TOOLCHAIN_HAS_NEWLIB ON CACHE BOOL "True if toolchain supports newlib")
+
+message(STATUS "Found toolchain: gnuarmemb (${GNUARMEMB_TOOLCHAIN_PATH})")

cmake/toolchain/host/generic.cmake

@@ -5,3 +5,5 @@ set(LINKER ld)
 set(BINTOOLS host-gnu)
 
 set(TOOLCHAIN_HAS_NEWLIB OFF CACHE BOOL "True if toolchain supports newlib")
+
+message(STATUS "Found toolchain: host (gcc/ld)")

cmake/toolchain/llvm/generic.cmake

@@ -30,3 +30,5 @@ set(CMAKE_CXX_COMPILER_TARGET ${triple})
 if("${ARCH}" STREQUAL "posix")
   set(TOOLCHAIN_HAS_NEWLIB OFF CACHE BOOL "True if toolchain supports newlib")
 endif()
+
+message(STATUS "Found toolchain: host (clang/ld)")

cmake/toolchain/xcc/generic.cmake

@@ -40,3 +40,5 @@ set(NOSYSDEF_CFLAG "")
 list(APPEND TOOLCHAIN_C_FLAGS -fms-extensions)
 
 set(TOOLCHAIN_HAS_NEWLIB OFF CACHE BOOL "True if toolchain supports newlib")
+
+message(STATUS "Found toolchain: xcc (${XTENSA_TOOLCHAIN_PATH})")

cmake/toolchain/xtools/generic.cmake

@@ -36,3 +36,5 @@ set(TOOLCHAIN_HAS_NEWLIB ON CACHE BOOL "True if toolchain supports newlib")
 
 unset(some_toolchain_root)
 unset(some_toolchain)
+
+message(STATUS "Found toolchain: xtools (${XTOOLS_TOOLCHAIN_PATH})")

cmake/toolchain/zephyr/generic.cmake

@@ -7,3 +7,5 @@ endif()
 include(${CMAKE_CURRENT_LIST_DIR}/${SDK_MAJOR_MINOR}/generic.cmake)
 
 set(TOOLCHAIN_KCONFIG_DIR ${CMAKE_CURRENT_LIST_DIR}/${SDK_MAJOR_MINOR})
+
+message(STATUS "Found toolchain: zephyr (${ZEPHYR_SDK_INSTALL_DIR})")