old_contents: {
  	'repo_type' : 'archive',
  	'download_locations' : [
  		{ 'url' : 'https://download.osgeo.org/libtiff/tiff-4.1.0.tar.gz', 'hashes' : [ { 'type' : 'sha256', 'sum' : '5d29f32517dadb6dbcd1255ea5bbc93a2b54b94fbf83653b4d65c7d6775b8634' }, ], },
  		{ 'url' : 'https://fossies.org/linux/misc/tiff-4.1.0.tar.gz', 'hashes' : [ { 'type' : 'sha256', 'sum' : '5d29f32517dadb6dbcd1255ea5bbc93a2b54b94fbf83653b4d65c7d6775b8634' }, ], },
  	],
  	'configure_options' : '{autoconf_prefix_options}',
  	'depends_on' : [
  		'zlib','libjpeg-turbo','libwebp'
  	],
  	'run_post_install' : [
  		'sed -i.bak \'s/Libs: -L${{libdir}} -ltiff$/Libs: -L${{libdir}} -ltiff -lwebp -llzma -ljpeg -lz/\' "{pkg_config_path}/libtiff-4.pc"',
  	],
  	'update_check' : { 'url' : 'https://download.osgeo.org/libtiff/?C=M;O=D', 'type' : 'httpindex', 'regex' : r'tiff-(?P<version_num>[\d.]+)\.tar\.gz' },
  	'_info' : { 'version' : '4.1.0', 'fancy_name' : 'libtiff' },
  }
new_contents: {
  	'repo_type' : 'archive',
  	'download_locations' : [
  		{ 'url' : 'https://download.osgeo.org/libtiff/tiff-4.1.0.tar.gz', 'hashes' : [ { 'type' : 'sha256', 'sum' : '5d29f32517dadb6dbcd1255ea5bbc93a2b54b94fbf83653b4d65c7d6775b8634' }, ], },
  		{ 'url' : 'https://fossies.org/linux/misc/tiff-4.1.0.tar.gz', 'hashes' : [ { 'type' : 'sha256', 'sum' : '5d29f32517dadb6dbcd1255ea5bbc93a2b54b94fbf83653b4d65c7d6775b8634' }, ], },
  	],
  	'conf_system' : 'cmake',
  	'source_subfolder' : '_build',
  	'configure_options' : '.. {cmake_prefix_options} -DCMAKE_INSTALL_PREFIX={target_prefix} -DBUILD_SHARED_LIBS=0 -DCMAKE_BUILD_TYPE=Release',
  	'regex_replace': {
  		'post_install': [
  			{
  				0: r'Libs: -L[^\n]+',
  				1: r'Libs: -L${{libdir}} -ltiff -lwebp -llzma -ljpeg -lz',
  				'in_file': '{pkg_config_path}/libtiff-4.pc'
  			}
  		]
  	},
  	'depends_on' : [
  		'zlib', 'libjpeg-turbo', 'libwebp'
  	],
  	'update_check' : { 'url' : 'https://download.osgeo.org/libtiff/?C=M;O=D', 'type' : 'httpindex', 'regex' : r'tiff-(?P<version_num>[\d.]+)\.tar\.gz' },
  	'_info' : { 'version' : '4.1.0', 'fancy_name' : 'libtiff' },
  }
subject: switch to cmake