diff --git a/arch/arm/src/cmake/gcc.cmake b/arch/arm/src/cmake/gcc.cmake
index 1a4414314403b..4d986498c2c10 100644
--- a/arch/arm/src/cmake/gcc.cmake
+++ b/arch/arm/src/cmake/gcc.cmake
@@ -62,7 +62,7 @@ endif()
 # array subscript [0] is outside array bounds:
 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105523
 
-execute_process(COMMAND ${CMAKE_C_COMPILER} --version
+execute_process(COMMAND ${CMAKE_CXX_COMPILER} --version
                 OUTPUT_VARIABLE GCC_VERSION_OUTPUT)
 string(REGEX MATCH "\\+\\+.* ([0-9]+)\\.[0-9]+" GCC_VERSION_REGEX
              "${GCC_VERSION_OUTPUT}")
diff --git a/arch/arm/src/common/Toolchain.defs b/arch/arm/src/common/Toolchain.defs
index dc1a2b2ccc133..69c3b1b9f40a2 100644
--- a/arch/arm/src/common/Toolchain.defs
+++ b/arch/arm/src/common/Toolchain.defs
@@ -309,10 +309,6 @@ else
    # Wrong warning array subscript [0] is outside array bounds:
    # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105523
 
-   ifeq ($(GCCVER),)
-     export GCCVER := $(shell $(CC) --version | grep gcc | sed -E "s/.* ([0-9]+\.[0-9]+).*/\1/" | cut -d'.' -f1)
-   endif
-
    ifeq ($(GCCVER),12)
      ARCHOPTIMIZATION += --param=min-pagesize=0
      ifeq ($(CONFIG_ARCH_RAMFUNCS),y)
diff --git a/libs/libxx/libcxx.cmake b/libs/libxx/libcxx.cmake
index 73f436ccd1cf9..7eaa6739584ed 100644
--- a/libs/libxx/libcxx.cmake
+++ b/libs/libxx/libcxx.cmake
@@ -95,14 +95,6 @@ list(APPEND SRCS ${SRCSTMP})
 set(FLAGS -Wno-attributes -Wno-deprecated-declarations -Wno-shadow
           -Wno-sign-compare)
 
-if(NOT DEFINED GCCVER)
-  execute_process(COMMAND ${CMAKE_CXX_COMPILER} --version
-                  OUTPUT_VARIABLE GCC_VERSION_OUTPUT)
-  string(REGEX MATCH "\\+\\+.* ([0-9]+)\\.[0-9]+" GCC_VERSION_REGEX
-               "${GCC_VERSION_OUTPUT}")
-  set(GCCVER ${CMAKE_MATCH_1})
-endif()
-
 if(GCCVER EQUAL 12)
   list(APPEND FLAGS -Wno-maybe-uninitialized -Wno-alloc-size-larger-than)
 endif()
diff --git a/libs/libxx/libcxx.defs b/libs/libxx/libcxx.defs
index 0740f19393e75..c0e6a2af21adb 100644
--- a/libs/libxx/libcxx.defs
+++ b/libs/libxx/libcxx.defs
@@ -61,10 +61,6 @@ endif
 CXXFLAGS += -Wno-shadow -Wno-sign-compare
 CXXFLAGS += -Wno-attributes -Wno-deprecated-declarations
 
-ifeq ($(GCCVER),)
-  export GCCVER = $(shell $(CXX) --version | grep ++ | sed -E 's/.* ([0-9]+\.[0-9]+).*/\1/' | cut -d'.' -f1)
-endif
-
 ifeq ($(shell expr $(GCCVER) \>= 12), 1)
   CXXFLAGS += -Wno-maybe-uninitialized -Wno-alloc-size-larger-than
 endif
diff --git a/tools/Config.mk b/tools/Config.mk
index 2637786f0eb77..c3c8886b2ec09 100644
--- a/tools/Config.mk
+++ b/tools/Config.mk
@@ -732,6 +732,9 @@ export DEFINE_PREFIX ?= $(subst X,,${shell $(DEFINE) "$(CC)" X 2> ${EMPTYFILE}})
 export INCDIR_PREFIX ?= $(subst "X",,${shell $(INCDIR) "$(CC)" X 2> ${EMPTYFILE}})
 export INCSYSDIR_PREFIX ?= $(subst "X",,${shell $(INCDIR) -s "$(CC)" X 2> ${EMPTYFILE}})
 
+# Get the GCC version number
+export GCCVER = $(shell $(CXX) --version | grep ++ | sed -E 's/.* ([0-9]+\.[0-9]+).*/\1/' | cut -d'.' -f1)
+
 # ARCHxxx means the predefined setting(either toolchain, arch, or system specific)
 ARCHDEFINES += ${DEFINE_PREFIX}__NuttX__
 ifeq ($(CONFIG_NDEBUG),y)