old_contents: {
  	'repo_type' : 'git',
  	'url' : 'https://github.com/xiph/opus.git',
  	'custom_cflag' : '-O3 -D_FORTIFY_SOURCE=0',
  	'conf_system' : 'cmake',
  	'source_subfolder' : '_build',
  	'configure_options' : '.. {cmake_prefix_options} -DCMAKE_INSTALL_PREFIX={product_prefix}/opus_git.installed -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=0 -DBUILD_TESTING=0 -DOPUS_CUSTOM_MODES=1 -DOPUS_BUILD_PROGRAMS=0 -DOPUS_INSTALL_PKG_CONFIG_MODULE=1',
  	# 'patches' : [
  		# ('opus/opus_git_strip_declspec.patch', '-p1'),
  	# ],
  	'run_post_install' : [
  		'sed -i.bak \'s/Libs: -L${{libdir}} -lopus.*/Libs: -L${{libdir}} -lopus -lssp/\' "{pkg_config_path}/opus.pc"', # ???, keep checking whether this is needed, apparently it is for now.
  	],
  	'_info' : { 'version' : None, 'fancy_name' : 'opus' },
  }
new_contents: {
  	'repo_type' : 'git',
  	'url' : 'https://github.com/xiph/opus.git',
  	'custom_cflag' : '-O3 -D_FORTIFY_SOURCE=0',
  	'conf_system' : 'cmake',
  	'source_subfolder' : '_build',
  	'configure_options' : '.. {cmake_prefix_options} -DCMAKE_INSTALL_PREFIX={target_prefix} -DOPUS_STACK_PROTECTOR=0 -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=0 -DBUILD_TESTING=0 -DOPUS_CUSTOM_MODES=1 -DOPUS_BUILD_PROGRAMS=0 -DOPUS_INSTALL_PKG_CONFIG_MODULE=1',
  	'patches' : [
  		('https://github.com/DeadSix27/opus/commit/3df389619cf39e73d8338819d27958c67d67663a.patch', '-p1', '..'),
  		# ('opus/opus_git_strip_declspec.patch', '-p1'),
  	],
  	'run_post_install' : [
  		'sed -i.bak \'s/Libs: -L${{libdir}} -lopus.*/Libs: -L${{libdir}} -lopus -lssp/\' "{pkg_config_path}/opus.pc"', # ???, keep checking whether this is needed, apparently it is for now.
  	],
  	'_info' : { 'version' : None, 'fancy_name' : 'opus' },
  }
subject: add patch to fix the incorrect pkg-config version