MakeMakefile#append_cflags

append_cflags(flags, *opts)

# File tmp/rubies/ruby-3.3.0/lib/mkmf.rb, line 1015
def append_cflags(flags, *opts)
  Array(flags).each do |flag|
    if checking_for("whether #{flag} is accepted as CFLAGS") {
         try_cflags(flag, *opts)
       }
      $CFLAGS << " " << flag
    end
  end
end

Check whether each given C compiler flag is acceptable and append it to $CFLAGS if so.

flags: a C compiler flag as a String or an Array of them

See also .[]= #cc_command .[] #check_signedness also in 4.1 · 4.0 · 3.4 · 3.2 · 3.1

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