Linker (?) warning about vapor-apns HOT 3 OPEN

This message is shown because Foundation requires that libcurl has a version 3 ABI, but libcurl built from source has a version 4 ABI. This shouldn't be a problem because the library is retro-compatible.

However, if this message bothers you, you can uninstall libcurl and follow these steps to reinstall it:

wget https://curl.haxx.se/download/curl-7.54.0.tar.gz
tar -xf curl-7.54.0.tar.gz
cd curl-7.54.0
sed -i -e "s/CURL_@CURL_LT_SHLIB_VERSIONED_FLAVOUR@4/CURL_@CURL_LT_SHLIB_VERSIONED_FLAVOUR@3/g" lib/libcurl.vers.in
./configure --with-nghttp2 --with-ssl --enable-versioned-symbols
make
sudo make install
sudo ldconfig

This will download and extract the source of the latest version of curl, downgrade the ABI version to 3 and compile the library with versionned symbols.

from vapor-apns.

@matthijs2704 Maybe we could add this solution directly into CurlUpdater?

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Thanks! I'm not quite sure how libcurl was installed though; how do I go about uninstalling it?

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