The `http get <url> <destfile>` utility had a bug with aria2c downloader where it couldn't properly save to destfile if it was an absolute path.
I have tried having `http get <url> -` output the downloaded file to stdout, but this conflicted with the output of `log_command` (which is also to stdout) so for now let's keep using the temporary file to resolve manual URL redirects.
Explicitly set PKG_CONFIG_PATH when `--with-openssl-dir` is used for older Rubies.
Otherwise, Ruby will attempt to link to the latest OpenSSL found by pkg-config,
which could be incompatible.
This merges "standard_build" and "standard_install" build steps into one again
and modifies "standard_install_with_bundled_gems" to just invoke "standard"
with the addition of `update-gems` & `extract-gems` targets.
Using `--with-ext=+` only has the indended effect (compiling all extensions that would normally get compiled) on Ruby 2.5+. On older versions, it causes none of the default extensions to get compiled, resulting in a defunct installation.
A very common type of build failure is that the Ruby "openssl" extension failed to compile. However, when that happens, ruby-build just prints a generic "BUILD FAILED" message. To find out what happened, the user would first have to open the ruby-build log, note the "Following extensions are not compiled" section, then figure out how to find the exact location to the "ext/openssl/mkmf.log" file for more information.
Now, when `make` fails, ruby-build will automatically forward the "Following extensions are not compiled" information to stderr.
Normally, Ruby `make` step will print a warning about any missing
extensions, but will not abort the build and instead proceed as normal.
Since Ruby installations without openssl or psych are essentially
broken, ruby-build used to have a `verify_openssl` build step to test if
the newly built Ruby can load these extensions, and print helpful
information and abort the build on errors:
Loading the Ruby openssl extension failed
ERROR: Ruby install aborted due to missing extensions
The `verify_opensl` implementation was necessary to provide a good
experience for ruby-build users, but was hacky and I would prefer to
eliminate it.
It appears that passing `--with-ext=openssl,psych` to the Ruby configure
step marks those extensions as mandatory and fails the `make` process if
they failed to build. This is exactly the behavior we want, so this
enables the configure option for all Ruby builds.
