Seach for optional modules in environment as well

Toolchain file update

cmake/stm32/common.cmake

@@ -11,6 +11,11 @@ endforeach()
 list(REMOVE_DUPLICATES STM32_SUPPORTED_FAMILIES_SHORT_NAME)
 
 if(NOT STM32_TOOLCHAIN_PATH)
+    if(DEFINED ENV{STM32_TOOLCHAIN_PATH})
+        message(STATUS "Detected toolchain path STM32_TOOLCHAIN_PATH in environmental variables: ")
+        message(STATUS "$ENV{STM32_TOOLCHAIN_PATH}")
+        set(STM32_TOOLCHAIN_PATH $ENV{STM32_TOOLCHAIN_PATH})
+    endif()
     if(NOT CMAKE_C_COMPILER)
         set(STM32_TOOLCHAIN_PATH "/usr")
         message(STATUS "No STM32_TOOLCHAIN_PATH specified, using default: " ${STM32_TOOLCHAIN_PATH})
@@ -36,11 +41,11 @@ set(TOOLCHAIN_BIN_PATH "${STM32_TOOLCHAIN_PATH}/bin")
 set(TOOLCHAIN_INC_PATH "${STM32_TOOLCHAIN_PATH}/${STM32_TARGET_TRIPLET}/include")
 set(TOOLCHAIN_LIB_PATH "${STM32_TOOLCHAIN_PATH}/${STM32_TARGET_TRIPLET}/lib")
 
-find_program(CMAKE_OBJCOPY NAMES ${STM32_TARGET_TRIPLET}-objcopy PATHS ${TOOLCHAIN_BIN_PATH} NO_DEFAULT_PATH)
-find_program(CMAKE_OBJDUMP NAMES ${STM32_TARGET_TRIPLET}-objdump PATHS ${TOOLCHAIN_BIN_PATH} NO_DEFAULT_PATH)
-find_program(CMAKE_SIZE NAMES ${STM32_TARGET_TRIPLET}-size PATHS ${TOOLCHAIN_BIN_PATH} NO_DEFAULT_PATH)
-find_program(CMAKE_DEBUGGER NAMES ${STM32_TARGET_TRIPLET}-gdb PATHS ${TOOLCHAIN_BIN_PATH} NO_DEFAULT_PATH)
-find_program(CMAKE_CPPFILT NAMES ${STM32_TARGET_TRIPLET}-c++filt PATHS ${TOOLCHAIN_BIN_PATH} NO_DEFAULT_PATH)
+find_program(CMAKE_OBJCOPY NAMES ${STM32_TARGET_TRIPLET}-objcopy PATHS ${TOOLCHAIN_BIN_PATH})
+find_program(CMAKE_OBJDUMP NAMES ${STM32_TARGET_TRIPLET}-objdump PATHS ${TOOLCHAIN_BIN_PATH})
+find_program(CMAKE_SIZE NAMES ${STM32_TARGET_TRIPLET}-size PATHS ${TOOLCHAIN_BIN_PATH})
+find_program(CMAKE_DEBUGGER NAMES ${STM32_TARGET_TRIPLET}-gdb PATHS ${TOOLCHAIN_BIN_PATH})
+find_program(CMAKE_CPPFILT NAMES ${STM32_TARGET_TRIPLET}-c++filt PATHS ${TOOLCHAIN_BIN_PATH})
 
 function(stm32_print_size_of_target TARGET)
     add_custom_target(${TARGET}_always_display_size
@@ -264,7 +269,7 @@ function(stm32_add_linker_script TARGET VISIBILITY SCRIPT)
 
     get_target_property(LINK_DEPENDS ${TARGET} ${INTERFACE_PREFIX}LINK_DEPENDS)
     if(LINK_DEPENDS)
-        list(APPEND LINK_DEPENDS "${SCRIPT}")        
+        list(APPEND LINK_DEPENDS "${SCRIPT}")
     else()
         set(LINK_DEPENDS "${SCRIPT}")
     endif()
@@ -313,4 +318,3 @@ include(stm32/l0)
 include(stm32/l1)
 include(stm32/l4)
 include(stm32/l5)
-