project('object extraction', 'c')

if meson.is_unity()
  error('MESON_SKIP_TEST, Skipping extraction test because this is a Unity build.')
endif

lib1 = library('somelib', 'src/lib.c')
lib2 = library('somelib2', 'lib.c', 'header.h', 'lib2.c')
obj1 = lib1.extract_objects('src/lib.c')
obj2 = lib2.extract_objects(['lib.c'])
obj3 = lib2.extract_objects(files('lib.c'))
obj4 = lib2.extract_objects(['lib.c', 'lib.c'])
obj5 = lib2.extract_objects(['lib.c', 'header.h'])
obj6 = lib2.extract_all_objects(recursive: true)
e1 = executable('main1', 'main.c', objects : obj1)
e2 = executable('main2', 'main.c', objects : obj2)
e3 = executable('main3', 'main.c', objects : obj3)
e4 = executable('main4', 'main.c', objects : obj4)
e5 = executable('main5', 'main.c', objects : obj5)
e6 = executable('main6', 'main.c', objects : obj6)
ct_src = custom_target('lib3.c', output: 'lib3.c', capture: true,
                       command: [find_program('create-source.py'), 'lib.c'])
lib3 = library('somelib3', ct_src)
e7 = executable('main7', 'main.c', objects: lib3.extract_objects(ct_src[0]))
e8 = executable('main8', 'main.c', objects: lib3.extract_objects(ct_src))
gen = generator(find_program('create-source.py'), arguments: ['@INPUT@'],
                output: '@BASENAME@4.c', capture: true)
gen_src = gen.process('lib.c')
lib4 = library('somelib4', gen_src)
e9 = executable('main9', 'main.c', objects: lib4.extract_objects(gen_src))
custom_target('custom_target with object inputs', output: 'objs',
              input: [obj1, obj2, obj3, obj5, obj6],
              build_by_default: true,
              command: [find_program('check-obj.py'), meson.backend(), '@INPUT@'],
              capture: true)
test('extraction test 1', e1)
test('extraction test 2', e2)
test('extraction test 3', e3)
test('extraction test 4', e4)
test('extraction test 5', e5)
test('extraction test 6', e6)
test('extraction test 7', e7)
test('extraction test 8', e8)
test('extraction test 9', e9)

lib = subproject('sub').get_variable('lib')
testcase expect_error('Tried to extract objects from a different subproject.')
  lib.extract_objects()
endtestcase

cc = meson.get_compiler('c')
lib = cc.find_library('z', required: false)
if lib.found()
  testcase expect_error('Unknown method .*', how: 're')
    lib.extract_objects()
  endtestcase
endif