spdlog: Do not use LFS64 functions with musl

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-support/spdlog/spdlog/0001-Do-not-use-LFS64-functions-on-linux-musl.patch

@@ -0,0 +1,30 @@
+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)
+     {

meta-oe/recipes-support/spdlog/spdlog_1.11.0.bb

@@ -4,7 +4,9 @@ LICENSE = "MIT"
 LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
 
 SRCREV = "ad0e89cbfb4d0c1ce4d097e134eb7be67baebb36"
-SRC_URI = "git://github.com/gabime/spdlog.git;protocol=https;branch=v1.x"
+SRC_URI = "git://github.com/gabime/spdlog.git;protocol=https;branch=v1.x \
+           file://0001-Do-not-use-LFS64-functions-on-linux-musl.patch \
+           "
 
 DEPENDS += "fmt"