[Dev-C++] weird warning about gcov

with mingw/gcc 3.4.2 on Dev-Cpp 4990, I get an odd message regarding =
something called nul.gcda. Does anyone know what that this means:

Compiler: Default compiler
Building Makefile: =
"W:\Dev-Cpp\GuillermoGutierrez\VaultViewer\Makefile.win"
Executing  make...
mingw32-make.exe -f =
"W:\Dev-Cpp\GuillermoGutierrez\VaultViewer\Makefile.win" all
g++.exe -S Main.cpp -o nul -I"W:/Dev-Cpp/include/c++/3.4.2"  =
-I"W:/Dev-Cpp/include/c++/3.4.2/mingw32"  =
-I"W:/Dev-Cpp/include/c++/3.4.2/backward"  =
-I"W:/Dev-Cpp/lib/gcc/mingw32/3.4.2/include"  -I"W:/Dev-Cpp/include"  =
-I"W:/Dev-Cpp/include/c++"  -I"W:/Dev-Cpp/include/FL"  =
-I"W:/Dev-Cpp/include/FLU"   =20
-fexpensive-optimizations -O2=20
Main.cpp:1: warning:`nul.gcda' is not a gcov data file=20
windres.exe -i VaultVewer_private.rc --input-format=3Drc -o nul -O coff  =

Execution terminated
Compilation successful

I also have MinGW-runtime 3.5, WinAPI 3.1, make-3.80.0-3, =
bin-utils-2.15.91 on windows 2000 Pro

Guillermo Gutierrez
Market Scan Information Systems
Software Q.A. Supervisor
(818) 575-2000 x2427
ggu...@ma...