[libyang] Adding LFS support for arm32 (sonic-net#6018)

In the emulated armhf environment, the function readdir()returns NULL on a ext4 file system directory. When running the libyang 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 libyang 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 Signed-off-by: Sabareesh Kumar Anandan <[email protected]>
zhenggen-xu · Nov 25, 2020 · ac60936 · ac60936
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commit ac60936
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diff --git a/src/libyang/patch/large_file_support_arm32.patch b/src/libyang/patch/large_file_support_arm32.patch
@@ -0,0 +1,11 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 8635ba1..39f0741 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -436,3 +436,6 @@ endif(ENABLE_BUILD_FUZZ_TARGETS)
+ if(GEN_LANGUAGE_BINDINGS AND GEN_CPP_BINDINGS)
+     add_subdirectory(swig)
+ endif()
++
++#Enable large file support for 32-bit arch
++add_definitions(-D_FILE_OFFSET_BITS=64)
diff --git a/src/libyang/patch/series b/src/libyang/patch/series
@@ -1,2 +1,3 @@
 libyang.patch
 swig.patch
+large_file_support_arm32.patch