thanks for the replies. I explicitly added "-U_FORTIFY_SOURCE" as CMAKE_CXX_FLAGS inside kpvcrlib CMakeLists.txt and the longjmp_chk disappeared. but still have dynamic linking error. this time with below error.
what you reckon? should I statically link against libstdc++ ?
# opening file /mnt/us/documents/book.epub
# cannot open document /mnt/us/documents/book.epub error loading module 'libs/libkoreader-cre' from file './libs/libkoreader-cre.so':
/usr/lib/libstdc++.so.6: version `CXXABI_ARM_1.3.3' not found (required by /mnt/us/koreader/./libs/libcrengine.so)
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