[Python] Linking custom sqlite when building python

I am trying to link a custom version of sqlite3 when building python, but there is an error when compiling python :

/usr/bin/install: cannot stat 'Modules/_sqlite3.cpython-313-x86_64-linux-gnu.so': No such file or directory make: *** [Makefile:2325: sharedinstall] Error 1

It does not pick up the custom sqlite despite pointing out to it with th following environment variables:

export CPPFLAGS="-I/opt/sqlite/include"
export CFLAGS="-I/opt/sqlite/include"
export C_INCLUDE_PATH="/opt/sqlite/include:${C_INCLUDE_PATH}"

export LDFLAGS="-L/opt/sqlite/lib"
export LIBRARY_PATH="/opt/sqlite/lib:${LIBRARY_PATH}"
export LD_LIBRARY_PATH="/opt/sqlite/lib:${LD_LIBRARY_PATH}"
export PKG_CONFIG_PATH="/opt/sqlite/lib/pkgconfig:${PKG_CONFIG_PATH}"


How can I ensure that the custom sqlite is used and not the system version?

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