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edcc7bbb5d
Apparently, this is needed to correctly detect musl libc in different versions of Alpine Linux. According to https://lists.gnu.org/archive/html/config-patches/2020-09/msg00002.html, the ldd based check does not work for some old versions of the Alpine Linux, and, according to https://lists.gnu.org/archive/html/config-patches/2020-11/msg00002.html, the compiler may not be available in a fresh Alpine container. The ldd based check is essentially the same as the check that was introduced by commit 3d00f60242f1726fc6eaa38e09435a969ee7ebe5, it is performed iff the compiler based check could not give a definitive answer. Reported-by: Cheng XU <xucheng@me.com> Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>