[libyang1] Adding LFS support for arm32 (#6346)

In the emulated armhf environment, the function readdir()returns NULL on a ext4 file system directory. When running the libyang1 test cases, it will require to load the plugins from the files (such as metadata.so), because the readdir() is failing, the plugins can’t be loaded in the emulated armhf environment, so it causes libyang1 test error. This error is a combination of the following reasons.
• Emulation of a 32-bit target from a 64-bit host –> qemu from x86_64 to armhf
• Glibc version > 2.27 – Debian buster is using glibc 2.28

- How I did it
Enabled large file support by setting _FILE_OFFSET_BITS=64 for libyang1.

Signed-off-by: Sabareesh Kumar Anandan <[email protected]>

Author: Sabareesh-Kumar-Anandan

src/libyang1/Makefile

@@ -28,6 +28,9 @@ $(addprefix $(DEST)/, $(MAIN_TARGET)): $(DEST)/% :
 	pushd libyang-$(LIBYANG1_VERSION)
 	sed -i 's/set(LIBYANG_MAJOR_SOVERSION 1)/set(LIBYANG_MAJOR_SOVERSION 2)/' CMakeLists.txt
 	sed -i 's/libyang1/libyang2/' debian/libyang1.install
+	# Enable large file support for 32-bit arch
+	echo 'add_definitions(-D_FILE_OFFSET_BITS=64)' >> CMakeLists.txt
+
 	dpkg-buildpackage -rfakeroot -b -us -uc -j$(SONIC_CONFIG_MAKE_JOBS)
 	popd