ENV['RC_ARCHS'] = '' if RUBY_PLATFORM =~ /darwin/

require 'mkmf'

# :stopdoc:

RbConfig::MAKEFILE_CONFIG['CC'] = ENV['CC'] if ENV['CC']

# sqlite3 settings: 
#
# The following settings taken from a more-or-less default OSX 10.10 sqlite installation. 
#
# The only difference: we include FTS3 *and* FTS4 
$defs.push "-DSQLITE_ENABLE_FTS4"
$defs.push "-DSQLITE_ENABLE_FTS3_PARENTHESIS"
$defs.push "-DSQLITE_ENABLE_LOCKING_STYLE=1"
$defs.push "-DSQLITE_ENABLE_RTREE"
$defs.push "-DSQLITE_SYSTEM_MALLOC"
$defs.push "-DSQLITE_THREADSAFE=2"

# additional settings
$defs.push "-DSQLITE_ENABLE_COLUMN_METADATA"
$defs.push "-DSQLITE_ENABLE_MEMORY_MANAGEMENT"
$defs.push "-DSQLITE_ENABLE_RTREE"
$defs.push "-DSQLITE_SOUNDEX"

$defs.push "-I#{File.dirname(__FILE__)}"

# Some additional warnings: on my machine compiling the sqlite3 amalgation spits out some
# warnings. As we don't hack sqlite3, but only the rubygem, we don't need these.
$warnflags += " -Wno-incompatible-pointer-types-discards-qualifiers"
$warnflags += " -Wno-unused-const-variable"
$warnflags += " -Wno-shorten-64-to-32"
$warnflags += " -Wno-typedef-redefinition"

if RbConfig::CONFIG["host_os"] =~ /mswin/
  $CFLAGS << ' -W3'
end

def asplode missing
  if RUBY_PLATFORM =~ /mingw|mswin/
    abort "#{missing} is missing. Install SQLite3 from " +
          "http://www.sqlite.org/ first."
  else
    abort <<-error
#{missing} is missing. Try 'port install sqlite3 +universal',
'yum install sqlite-devel' or 'apt-get install libsqlite3-dev'
and check your shared library search path (the
location where your sqlite3 shared library is located).
    error
  end
end

# -- sqlite3 platform configuration, see http://www.sqlite.org/compile.html
have_func('fdatasync')
have_func('gmtime_r')
have_func('isnan')
have_func('localtime_r')
have_func('localtime_s')
have_func('malloc_usable_size')
have_func('strchrnul')
have_func('usleep')
have_func('utime')

# -- ruby feature detection

# Functions defined in 1.9 but not 1.8
have_func('rb_proc_arity')

# Functions defined in 2.1 but not 2.0
have_func('rb_integer_pack')

# These functions may not be defined in a standard sqlite3-ruby build -
# they are here. We still need to define the test macros, as they are used
# in the upstream (i.e. sqlite3-ruby) code.
$defs.push "-DHAVE_SQLITE3_INITIALIZE"
$defs.push "-DHAVE_SQLITE3_BACKUP_INIT"
$defs.push "-DHAVE_SQLITE3_COLUMN_DATABASE_NAME"
$defs.push "-DHAVE_SQLITE3_ENABLE_LOAD_EXTENSION"
$defs.push "-DHAVE_SQLITE3_LOAD_EXTENSION"
$defs.push "-DHAVE_SQLITE3_OPEN_V2"
$defs.push "-DHAVE_SQLITE3_PREPARE_V2"
$defs.push "-DHAVE_SQLITE3_INT64"
$defs.push "-DHAVE_SQLITE3_UINT64"

create_makefile('sqlite3/sqlite3_native')