From ce7a593e74c8e0c2ece15c73e7614d4f13a19a53 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Fri, 30 Dec 2022 13:04:08 -0800
Subject: [PATCH] Do not use LFS64 functions on linux/musl

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

Upstream-Status: Submitted [https://github.com/gabime/spdlog/pull/2589]
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 include/spdlog/details/os.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/include/spdlog/details/os-inl.h
+++ b/include/spdlog/details/os-inl.h
@@ -237,7 +237,7 @@ SPDLOG_INLINE size_t filesize(FILE *f)
     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))
+#    if ((defined(__linux__) && defined(__GLIBC__)) || defined(__sun) || defined(_AIX)) && (defined(__LP64__) || defined(_LP64))
     struct stat64 st;
     if (::fstat64(fd, &st) == 0)
     {
