% 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