old_contents: {
  	'repo_type' : 'git',
  	'url' : 'https://github.com/madler/zlib.git',
  	'conf_system' : 'cmake',
  	'source_subfolder' : '_build',
  	'configure_options' : '.. {cmake_prefix_options} -DCMAKE_INSTALL_PREFIX={target_prefix} -DBUILD_SHARED_LIBS=0 -DAMD64=ON -DCMAKE_BUILD_TYPE=Release',
  	'patches' : [
  		('zlib/0001-mingw-workarounds.patch', '-p1', '..'),
  	],
  	'_info' : { 'version' : None, 'fancy_name' : 'zlib' },
  }
new_contents: {
  	'repo_type' : 'git',
  	'url' : 'https://github.com/madler/zlib.git',
  	'conf_system' : 'cmake',
  	'source_subfolder' : '_build',
  	'configure_options' : '.. {cmake_prefix_options} -DCMAKE_INSTALL_PREFIX={target_prefix} -DINSTALL_PKGCONFIG_DIR="{target_prefix}/lib/pkgconfig" -DBUILD_SHARED_LIBS=0 -DAMD64=ON -DCMAKE_BUILD_TYPE=Release',
  	'patches' : [
  		('zlib/0001-mingw-workarounds.patch', '-p1', '..'),
  	],
  	'_info' : { 'version' : None, 'fancy_name' : 'zlib' },
  }
subject: use proper pkg-config install path