GCC_VERSION         5 include/linux/compiler-gcc3.h #if GCC_VERSION < 30200
GCC_VERSION         9 include/linux/compiler-gcc3.h #if GCC_VERSION >= 30300
GCC_VERSION        15 include/linux/compiler-gcc3.h #if GCC_VERSION >= 30400
GCC_VERSION        20 include/linux/compiler-gcc3.h # if GCC_VERSION < 30400
GCC_VERSION         7 include/linux/compiler-gcc4.h # if GCC_VERSION >= 40100 &&  GCC_VERSION <= 40101
GCC_VERSION        16 include/linux/compiler-gcc4.h #if GCC_VERSION >= 40100 && GCC_VERSION < 40600
GCC_VERSION        20 include/linux/compiler-gcc4.h #if GCC_VERSION >= 40300
GCC_VERSION        44 include/linux/compiler-gcc4.h #if GCC_VERSION >= 40500
GCC_VERSION        61 include/linux/compiler-gcc4.h #if GCC_VERSION >= 40600
GCC_VERSION        80 include/linux/compiler-gcc4.h #if GCC_VERSION >= 40400
GCC_VERSION        84 include/linux/compiler-gcc4.h #if GCC_VERSION >= 40800 || (defined(__powerpc__) && GCC_VERSION >= 40600)