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require 'mkmf'
have_func("rb_enc_interned_str", "ruby.h") # Ruby 3.0+
have_func("rb_hash_new_capa", "ruby.h") # Ruby 3.2+
have_func("rb_proc_call_with_block", "ruby.h") # CRuby (TruffleRuby doesn't have it)
have_func("rb_gc_mark_locations", "ruby.h") # Missing on TruffleRuby
append_cflags([
"-fvisibility=hidden",
"-I..",
"-Wall",
"-std=gnu99"
])
if ENV["MSGPACK_DEBUG"]
append_cflags(RbConfig::CONFIG["debugflags"]) if RbConfig::CONFIG["debugflags"]
append_cflags("-DRUBY_DEBUG=1")
end
if RUBY_VERSION.start_with?('3.0.') && RUBY_VERSION <= '3.0.5'
# https://bugs.ruby-lang.org/issues/18772
append_cflags("-DRB_ENC_INTERNED_STR_NULL_CHECK=1")
end
# checking if Hash#[]= (rb_hash_aset) dedupes string keys (Ruby 2.6+)
h = {}
x = {}
r = rand.to_s
h[%W(#{r}).join('')] = :foo
x[%W(#{r}).join('')] = :foo
if x.keys[0].equal?(h.keys[0])
append_cflags("-DHASH_ASET_DEDUPE=1")
else
append_cflags("-DHASH_ASET_DEDUPE=0")
end
# checking if String#-@ (str_uminus) directly interns frozen strings... ' (Ruby 3.0+)
begin
s = rand.to_s.freeze
if (-s).equal?(s) && (-s.dup).equal?(s)
append_cflags("-DSTR_UMINUS_DEDUPE_FROZEN=1")
else
append_cflags("-DSTR_UMINUS_DEDUPE_FROZEN=0")
end
rescue NoMethodError
append_cflags("-DSTR_UMINUS_DEDUPE_FROZEN=0")
end
if warnflags = CONFIG['warnflags']
warnflags.slice!(/ -Wdeclaration-after-statement/)
end
create_makefile('msgpack/msgpack')
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