Compilation failure with gcc 4.4.7

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+Message-ID: <20151219112119.32735.79955@thinkbox.jade-hamburg.de>\r
+From: Justus Winter <4winter@informatik.uni-hamburg.de>\r
+User-Agent: alot/0.3.6+\r
+Subject: Compilation failure with gcc 4.4.7\r
+Date: Sat, 19 Dec 2015 12:21:19 +0100\r
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+Content-Type: text/plain; charset="utf-8"\r
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+\r
+Hello,\r
+\r
+I just tried to compile notmuch with an oldish compiler, and that\r
+failed (if the compiler is indeed too old, then at least the error\r
+message should be more helpful):\r
+\r
+% ./configure --prefix=3D$HOME/stow/notmuch\r
+[...]\r
+Sanity checking C compilation environment... OK.\r
+Sanity checking C++ compilation environment... OK.\r
+Reading libnotmuch version from source...\r
+*** Error: Reading lib/notmuch.h failed.\r
+Please try running configure again in a clean environment, and if the\r
+problem persists, report a bug.\r
+% cc -g -O2 _libversion.c -o _lib\r
+In file included from _libversion.c:2:\r
+lib/notmuch.h:858: error: wrong number of arguments specified for =E2=80=98=\r
+deprecated=E2=80=99 attribute\r
+lib/notmuch.h:915: error: wrong number of arguments specified for =E2=80=98=\r
+deprecated=E2=80=99 attribute\r
+lib/notmuch.h:1011: error: wrong number of arguments specified for =E2=80=\r
+=98deprecated=E2=80=99 attribute\r
+lib/notmuch.h:1048: error: wrong number of arguments specified for =E2=80=\r
+=98deprecated=E2=80=99 attribute\r
+% gcc --version\r
+gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-16)\r
+Copyright (C) 2010 Free Software Foundation, Inc.\r
+This is free software; see the source for copying conditions.  There is NO\r
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\r
+\r
+Cheers,\r
+Justus\r
+\r
+--===============4020483361536373739==\r
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