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@@ -0,0 +1,42 @@
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+From 1670ca128118be1d914fc89223e94c4cff1bbf03 Mon Sep 17 00:00:00 2001
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+From: Jan Heylen <jan.heylen@nokia.com>
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+Date: Wed, 25 Oct 2017 06:45:49 +0200
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+Subject: [PATCH] Fix compilation without zlib
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+
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+libtelnet source code uses '#if defived(HAVE_ZLIB)' as conditional flag for
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+optional compression support. But the configure(.ac) script does not play well
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+with this: it will define 'HAVE_ZLIB' to either 1 (zlib present) or 0
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+(zlib not present). For the C preprocessor, both cases mean 'defined'.
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+
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+As a result, compilation will fail when trying to include zlib.h, which is
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+missing.
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+
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+Signed-off-by: Jan Heylen <jan.heylen@nokia.com>
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+Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
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+---
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+ configure.ac | 2 +-
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+ 1 file changed, 1 insertion(+), 1 deletion(-)
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+
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+Upstream-status: upstream has changed to cmake iso autotools (but not yet
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+released) [1] and a pull request exists to fix several issues with that,
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+including correct handling of zlib detection [2].
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+
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+[1] https://github.com/seanmiddleditch/libtelnet/commit/4860d10da44929554895c0ef83274f38de68e958
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+[2] https://github.com/seanmiddleditch/libtelnet/pull/54
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+
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+diff --git a/configure.ac b/configure.ac
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+index 021b48f..c4dac8b 100644
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+--- a/configure.ac
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++++ b/configure.ac
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+@@ -33,7 +33,7 @@ AC_HEADER_STDC
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+ PKG_CHECK_MODULES([zlib],
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+ [zlib],
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+ [AC_DEFINE([HAVE_ZLIB], [1], [Define to 1 if you have zlib.])],
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+- [AC_DEFINE([HAVE_ZLIB], [0], [Define to 1 if you have zlib.])])
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++ [AC_MSG_NOTICE([not enabling zlib support])])
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+
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+ # Checks for header files.
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+
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+--
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+2.7.4
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+
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Thomas De Schampheleire