/usr/lib/gcc-cross/powerpc64-linux-gnu/7/plugin/include/bversion.h is in gcc-7-plugin-dev-powerpc64-linux-gnu 7.3.0-16ubuntu3cross1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | #define BUILDING_GCC_MAJOR 7
#define BUILDING_GCC_MINOR 3
#define BUILDING_GCC_PATCHLEVEL 0
#define BUILDING_GCC_VERSION (BUILDING_GCC_MAJOR * 1000 + BUILDING_GCC_MINOR)
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