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-rw-r--r--ext/zlib/extconf.rb3
1 files changed, 0 insertions, 3 deletions
diff --git a/ext/zlib/extconf.rb b/ext/zlib/extconf.rb
index b4348ce..4480d35 100644
--- a/ext/zlib/extconf.rb
+++ b/ext/zlib/extconf.rb
@@ -20,8 +20,6 @@ if %w'z libz zlib1 zlib zdll zlibwapi'.find {|z| have_library(z, 'deflateReset')
case RUBY_PLATFORM.split('-',2)[1]
when 'amigaos' then
os_code = 'AMIGA'
- when /\Aos2[\-_]emx\z/ then
- os_code = 'OS2'
when /mswin|mingw|bccwin/ then
# NOTE: cygwin should be regarded as Unix.
os_code = 'WIN32'
@@ -36,7 +34,6 @@ if %w'z libz zlib1 zlib zdll zlibwapi'.find {|z| have_library(z, 'deflateReset')
'OS_VMS' => 'VMS',
'OS_UNIX' => 'Unix',
'OS_ATARI' => 'Atari',
- 'OS_OS2' => 'OS/2',
'OS_MACOS' => 'MacOS',
'OS_TOPS20' => 'TOPS20',
'OS_WIN32' => 'Win32',