-fno-builtin-calloc
-fno-builtin-getenv
-fno-builtin-malloc
-fno-builtin-memalign
-fno-builtin-memdup
-fno-builtin-memfatal
-fno-builtin-memhash
-fno-builtin-memsum
-fno-builtin-putenv
-fno-builtin-realloc
-fno-builtin-setenv
-fno-builtin-stracmp
-fno-builtin-strcopy
-fno-builtin-strdup
-fno-builtin-strelapsed
-fno-builtin-stresc
-fno-builtin-streval
-fno-builtin-strexpr
-fno-builtin-strftime
-fno-builtin-strgid
-fno-builtin-strgrpmatch
-fno-builtin-strhash
-fno-builtin-strkey
-fno-builtin-strlcat
-fno-builtin-strlcpy
-fno-builtin-strlook
-fno-builtin-strmatch
-fno-builtin-strmode
-fno-builtin-strnacmp
-fno-builtin-strncopy
-fno-builtin-strntod
-fno-builtin-strntol
-fno-builtin-strntold
-fno-builtin-strntoll
-fno-builtin-strnton
-fno-builtin-strntonll
-fno-builtin-strntoul
-fno-builtin-strntoull
-fno-builtin-stropt
-fno-builtin-strperm
-fno-builtin-strpsearch
-fno-builtin-strptime
-fno-builtin-strsearch
-fno-builtin-strsort
-fno-builtin-strsubmatch
-fno-builtin-strsum
-fno-builtin-strtape
-fno-builtin-strtod
-fno-builtin-strtoip4
-fno-builtin-strtoip6
-fno-builtin-strtol
-fno-builtin-strtold
-fno-builtin-strtoll
-fno-builtin-strton
-fno-builtin-strtonll
-fno-builtin-strtoul
-fno-builtin-strtoull
-fno-builtin-struid
-fno-builtin-struniq
-fno-builtin-strval
-fno-builtin-valloc