check_optflags -fno-tree-vectorize
check_cflags -Werror=implicit-function-declaration
check_cflags -Werror=missing-prototypes
+ check_cflags -Werror=return-type
check_cflags -Werror=declaration-after-statement
check_cflags -Werror=vla
elif enabled llvm_gcc; then
check_cflags -Qunused-arguments
check_cflags -Werror=implicit-function-declaration
check_cflags -Werror=missing-prototypes
+ check_cflags -Werror=return-type
elif enabled armcc; then
# 2523: use of inline assembler is deprecated
add_cflags -W${armcc_opt},--diag_suppress=2523