Issue #7605 has been reported by luislavena (Luis Lavena).

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Bug #7605: Zlib: deprecation of IO-likes caused build failures
https://bugs.ruby-lang.org/issues/7605

Author: luislavena (Luis Lavena)
Status: Open
Priority: Normal
Assignee: knu (Akinori MUSHA)
Category: build
Target version: 2.0.0
ruby -v: r38563


Hello,

Deprecation of IO-likes (lines, bytes, chars and codepoints) introduced in r38563 is causing build failures on GCC 4.7.2 on Windows:

http://ci.rubyinstaller.org/view/All/job/ruby-trunk-x64-build/556/console
http://ci.rubyinstaller.org/view/All/job/ruby-trunk-x86-build/675/console

 generating zlib-x64-mingw32.def
 compiling ../../../ext/zlib/zlib.c
 ../../../ext/zlib/zlib.c: In function 'rb_gzreader_lines':
 ../../../ext/zlib/zlib.c:4173:5: warning: implicit declaration of function 'rb_gzreader_each_line' [-Wimplicit-function-declaration] 
 linking shared-object zlib.so
 zlib.o: In function `rb_gzreader_lines':
 c:\Users\Worker\Jenkins\workspace\ruby-trunk-x64-build\build\ext\zlib/../../../ext/zlib/zlib.c:4173: undefined reference to `rb_gzreader_each_line'
 collect2.exe: error: ld returned 1 exit status
 make[2]: *** [../../.ext/x64-mingw32/zlib.so] Error 1




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