I did this
Tried to use $compiler_num for clang in that file. It's calculated from $CC -dumpversion, which always returns 4.2.1, the GCC version that clang was initially fully compatible to.
I expected the following
The actual compiler version in $compiler_num
curl/libcurl version
git master 45cecfb
operating system
Ubuntu Xenial 16.04.2
I'll try to fix this, just logging this here so that I don't forget it.