GCC: more patterns for ar/ranlib

Modules/Compiler/GNU-FindBinUtils.cmake

@@ -2,6 +2,12 @@ if(NOT DEFINED _CMAKE_PROCESSING_LANGUAGE OR _CMAKE_PROCESSING_LANGUAGE STREQUAL
   message(FATAL_ERROR "Internal error: _CMAKE_PROCESSING_LANGUAGE is not set")
 endif()
 
+# Ubuntu 16.04:
+# * /usr/bin/gcc-ar-5
+# * /usr/bin/gcc-ranlib-5
+string(REGEX MATCH "^([0-9]+)" __version_x
+    "${CMAKE_${_CMAKE_PROCESSING_LANGUAGE}_COMPILER_VERSION}")
+
 string(REGEX MATCH "^([0-9]+\\.[0-9]+)" __version_x_y
     "${CMAKE_${_CMAKE_PROCESSING_LANGUAGE}_COMPILER_VERSION}")
 
@@ -10,16 +16,18 @@ get_filename_component(__gcc_hints "${CMAKE_${_CMAKE_PROCESSING_LANGUAGE}_COMPIL
 
 # http://manpages.ubuntu.com/manpages/wily/en/man1/gcc-ar.1.html
 find_program(CMAKE_${_CMAKE_PROCESSING_LANGUAGE}_COMPILER_AR NAMES
-    "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ar"
     "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ar-${__version_x_y}"
+    "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ar-${__version_x}"
+    "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ar"
     HINTS ${__gcc_hints}
     DOC "A wrapper around 'ar' adding the appropriate '--plugin' option for the GCC compiler"
 )
 
 # http://manpages.ubuntu.com/manpages/wily/en/man1/gcc-ranlib.1.html
 find_program(CMAKE_${_CMAKE_PROCESSING_LANGUAGE}_COMPILER_RANLIB NAMES
-    "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ranlib"
     "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ranlib-${__version_x_y}"
+    "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ranlib-${__version_x}"
+    "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ranlib"
     HINTS ${__gcc_hints}
     DOC "A wrapper around 'ranlib' adding the appropriate '--plugin' option for the GCC compiler"
 )