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From: Dmitry Tsarevich <dimhotepus@gmail.com>
Date: Sun, 20 Feb 2022 00:45:06 +0300
Message-ID: <CANh+qY3iBxtgK9vk_fz4ruW-fH0HeOpY30p9P3ACUv45vhUEpg@mail.gmail.com>
Subject: Unable to build under Windows
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Hello!

I'm trying to build bzip2 under Windows / MSVC

Unfortunately, STDERR_FILENO is *nix specific and is not defined under MSVC.

What I can suggest is to patch bzip2.c to define STDERR_FILENO under MSVC:

diff --git a/bzip2.c b/bzip2.c
index d1f2fa8..d4550a9 100644
--- a/bzip2.c
+++ b/bzip2.c
@@ -150,6 +150,8 @@
          ERROR_IF_MINUS_ONE ( retVal );               \
       } while ( 0 )

+#define STDERR_FILENO _fileno(stderr)
+
 #endif /* BZ_LCCWIN32 */