building under macOS 10.13 (High Sierra)

[thierrygosselin]

recommendation:
Update documentation that specify user must use clang as default compiler, because GCC raises errors.

cd Downloads
wget https://curl.haxx.se/download/curl-7.60.0.tar.gz
tar -zxvf curl-7.60.0.tar.gz
cd curl-7.60.0
CC="/usr/local/bin/clang" ./configure --without-ssl --with-darwinssl
make -j8
sudo make install

[nickzman]

The problem isn't the documentation... The problem is the code should be changed to not assume everyone building libcurl against the High Sierra SDK is using Clang to do so.