Configure pkgconf with multiarch pkg-config and library search paths#115
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The original pkg-config build included --with-pc-path to search /usr/lib/x86_64-linux-gnu/pkgconfig. When switching to pkgconf, the equivalent --with-pkg-config-dir flag was not included, so pkgconf omitted the multiarch path from its compiled-in defaults. On ubuntu-noble, cmake 3.28's FindOpenSSL uses pkg-config to resolve the library directory hint. Without openssl.pc visible to pkgconf, cmake could not locate OPENSSL_CRYPTO_LIBRARY despite libssl-dev being installed, causing the percona-xtrabackup builds to fail at the libkmip cmake configure step.
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Reasonable changes to package builds exclusively.
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The original pkg-config build included --with-pc-path to search /usr/lib/x86_64-linux-gnu/pkgconfig. When switching to pkgconf, the equivalent --with-pkg-config-dir flag was not included, so pkgconf omitted the multiarch path from its compiled-in defaults.
On ubuntu-noble, cmake 3.28's FindOpenSSL uses pkg-config to resolve the library directory hint. Without openssl.pc visible to pkgconf, cmake could not locate OPENSSL_CRYPTO_LIBRARY despite libssl-dev being installed, causing the percona-xtrabackup builds to fail at the libkmip cmake configure step.
This was a regression introduced by #107 and only visible under ubuntu-noble compilation which was not caught before the merge.