fix detection of GCC

gcc/gcc.spec

@@ -42,7 +42,7 @@ Class:        CORE
 Group:        Compiler
 License:      GPL
 Version:      %{V_full}
-Release:      20040426
+Release:      20040427
 
 #   package options
 %option       with_cxx       yes
@@ -196,7 +196,7 @@ Provides:     gcc = %{version}-%{release}
 
     #   determine build flags
     l_ccisgcc=no
-    if [ ".`(%{l_cc} -v; %{l_cc} --version) </dev/null 2>/dev/null | grep 'gcc'`" != . ]; then
+    if [ ".`(%{l_cc} -v; %{l_cc} --version) </dev/null 2>&1 | grep -i 'gcc'`" != . ]; then
         l_ccisgcc=yes
     fi
     l_cflags=""