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https://bugs.gentoo.org/906954
https://github.com/gabime/spdlog/commit/287a00d364990edbb621fe5e392aeb550135fb96
From 287a00d364990edbb621fe5e392aeb550135fb96 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Tue, 3 Jan 2023 09:54:50 -0800
Subject: [PATCH] Do not use LFS64 functions on linux/musl (#2589)
On musl, off_t is 64bit always ( even on 32bit platforms ), therefore
using LFS64 funcitons is not needed on such platforms. Moreover, musl
has stopped providing aliases for these functions [1] which means it
wont compile on newer musl systems. Therefore only use it on 32bit
glibc/linux platforms and exclude musl like cygwin or OSX
[1] https://git.musl-libc.org/cgit/musl/commit/?id=246f1c811448f37a44b41cd8df8d0ef9736d95f4
Signed-off-by: Khem Raj <raj.khem@gmail.com>
--- a/include/spdlog/details/os-inl.h
+++ b/include/spdlog/details/os-inl.h
@@ -236,8 +236,8 @@ SPDLOG_INLINE size_t filesize(FILE *f)
# else
int fd = ::fileno(f);
# endif
-// 64 bits(but not in osx or cygwin, where fstat64 is deprecated)
-# if (defined(__linux__) || defined(__sun) || defined(_AIX)) && (defined(__LP64__) || defined(_LP64))
+// 64 bits(but not in osx, linux/musl or cygwin, where fstat64 is deprecated)
+# if ((defined(__linux__) && defined(__GLIBC__)) || defined(__sun) || defined(_AIX)) && (defined(__LP64__) || defined(_LP64))
struct stat64 st;
if (::fstat64(fd, &st) == 0)
{
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