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From: "janezz55 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/109818] std::trunc() requires a <cmath> hack after
 building DJGPP
Date: Sun, 14 May 2023 12:26:29 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109818

--- Comment #27 from Janez Zemva <janezz55 at gmail dot com> ---
forcing glibcxx_cv_c99_math_tr1=3Dyes solved this issue for me. The C99
compliance test is really strict, even openlibm fails the test (it fails to
define float_t and double_t, but this can be hacked around).=