% sed -E -n 's/^.*\[(-W.*)].*$/\1/p' full_build.log | sort | uniq -c | sort -rn 
 192 -Wimplicit-function-declaration
 190 -Wformat
 184 -Wcast-align
 159 -Wpointer-sign
  53 -Wimplicit-int
  50 -Wabsolute-value
  45 -Wreturn-type
  29 -Wformat-security
  27 -Wtautological-pointer-compare
  25 -Wswitch
  22 -Wtautological-constant-out-of-range-compare
  22 -Wtautological-compare
  20 -Wmissing-variable-declarations
  19 -Wformat-extra-args
  16 -Wincompatible-pointer-types-discards-qualifiers
  13 -Wdeprecated-declarations
  12 -Wstrlcpy-strlcat-size
  12 -Wmissing-prototypes
   8 -Wtypedef-redefinition
   8 -Wthread-safety-analysis
   8 -Wimplicit-exception-spec-mismatch
   7 -Wparentheses-equality
   6 -Wmacro-redefined
   6 -W#warnings
   4 -Wmissing-declarations
   4 -Wincompatible-pointer-types
   4 -Warray-bounds
   3 -Wunused-value
   3 -Wshadow
   3 -Wint-to-void-pointer-cast
   3 -Wint-conversion
   3 -Wenum-conversion
   3 -Wempty-body
   2 -Wunused-const-variable
   2 -Wunknown-warning-option
   2 -Wtentative-definition-incomplete-type
   2 -Wstring-plus-int
   2 -Wpointer-arith
   2 -Wincompatible-library-redeclaration
   1 -Wunused-function
   1 -Wunsequenced
   1 -Wstrncat-size
   1 -Wsometimes-uninitialized
   1 -Wparentheses
   1 -Wmemsize-comparison