update extconf to sync with Makefile of quickjs

ext/quickjsrb/extconf.rb

@@ -16,25 +16,34 @@
 
 append_cflags('-I$(srcdir)/quickjs')
 
-append_cflags('-fwrapv')
+
 append_cflags('-g')
 append_cflags('-O2')
 append_cflags('-Wall')
 append_cflags('-MMD')
 append_cflags('-MF')
-append_cflags('-Wextra')
-append_cflags('-Wno-sign-compare')
-append_cflags('-Wno-missing-field-initializers')
-append_cflags('-Wundef -Wuninitialized')
-append_cflags('-Wunused -Wno-unused-parameter')
-append_cflags('-Wwrite-strings')
-append_cflags('-Wchar-subscripts -funsigned-char')
-append_cflags('-D_GNU_SOURCE -DCONFIG_VERSION=\"2024-02-14\" -DCONFIG_BIGNUM')
+
+case CONFIG['arch']
+when /darwin/
+  append_cflags('-Wextra')
+  append_cflags('-Wno-sign-compare')
+  append_cflags('-Wno-missing-field-initializers')
+  append_cflags('-Wundef -Wuninitialized')
+  append_cflags('-Wunused -Wno-unused-parameter')
+  append_cflags('-Wwrite-strings')
+  append_cflags('-Wchar-subscripts -funsigned-char')
+else
+  append_cflags('-Wno-array-bounds -Wno-format-truncation')
+end
+
+append_cflags('-fwrapv')
+#$defs.push('-D_GNU_SOURCE -DCONFIG_VERSION=\"2024-02-14\"')
+#$defs.push('-DCONFIG_BIGNUM')
+$CFLAGS << ' ' << '-D_GNU_SOURCE -DCONFIG_VERSION=\"2024-02-14\" -DCONFIG_BIGNUM'
 
 abort('could not find quickjs.h') unless find_header('quickjs.h')
 abort('could not find cutils.h') unless find_header('cutils.h')
 abort('could not find quickjs-libc.h') unless find_header('quickjs-libc.h')
-#abort('could not find libbf.h') unless find_header('libbf.h')
 
 # Makes all symbols private by default to avoid unintended conflict
 # with other gems. To explicitly export symbols you can use RUBY_FUNC_EXPORTED