In some environment, the directly calling for gcc is not supported.
This patch fixes the issue.

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Signed-off-by: Yuwei Chen <yuwei.chen@intel.com>
---
 BaseTools/Source/C/DevicePath/GNUmakefile | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/BaseTools/Source/C/DevicePath/GNUmakefile b/BaseTools/Source/C/DevicePath/GNUmakefile
old mode 100644
new mode 100755
index c217674345b1..5944e80bd2b4
--- a/BaseTools/Source/C/DevicePath/GNUmakefile
+++ b/BaseTools/Source/C/DevicePath/GNUmakefile
@@ -13,12 +13,15 @@ OBJECTS = DevicePath.o UefiDevicePathLib.o DevicePathFromText.o  DevicePathUtili
 
 include $(MAKEROOT)/Makefiles/app.makefile
 
-GCCVERSION = $(shell gcc -dumpversion | awk -F'.' '{print $$1}')
+GCCVERSION=0
+ifneq ($(CXX), gcc)
+  GCCVERSION = $(shell $(CXX) -dumpversion | awk -F'.' '{print $$1}')
+endif
 ifneq ("$(GCCVERSION)", "5")
-ifneq ($(CXX), llvm)
-# gcc 12 trips over device path handling
-BUILD_CFLAGS += -Wno-error=stringop-overflow
-endif
+  ifneq ($(CXX), llvm)
+    # gcc 12 trips over device path handling
+    BUILD_CFLAGS += -Wno-error=stringop-overflow
+  endif
 endif
 
 LIBS = -lCommon
--
2.27.0.windows.1