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-rw-r--r--ext/zlib/extconf.rb7
1 files changed, 1 insertions, 6 deletions
diff --git a/ext/zlib/extconf.rb b/ext/zlib/extconf.rb
index 6b9bb05742..b4e76af3c6 100644
--- a/ext/zlib/extconf.rb
+++ b/ext/zlib/extconf.rb
@@ -54,12 +54,7 @@ if %w'z libz zlib zdll'.find {|z| have_library(z, 'deflateReset')} and
message "#{OS_NAMES[os_code]}\n"
defines << "OS_CODE=#{os_code}"
- defines = defines.collect{|d|' -D'+d}.join
- if $CPPFLAGS then
- $CPPFLAGS += defines
- else
- $CFLAGS += defines
- end
+ $defs.concat(defines.collect{|d|' -D'+d})
create_makefile('zlib')