The autoconf launcher script in the autoconf bundle created by `make/devkit/createAutoconf.sh` currently writes a config file into the bundle installation dir every time it runs. This prevents it from functioning when installed on a read-only filesystem. We can work around the need for writing to this config file by instead adding a parameter to the command line sent to the actual autoconf executable.
This is what the script adds to the config file (with the $this_script_dir variable expanded): begin-language: "M4sugar" args: --prepend-include $this_script_dir/usr/share/autoconf end-language: "M4sugar" Looking at the original config file, it has several lines similar to this where the --prepend-include arg points to $PREFIX/usr/share/autoconf (where $PREFIX was specified at autoconf build time). Removing this addition from the config file causes autoconf to fail as it can't find m4sugar.m4 (which is located in $this_script_dir/usr/share/autoconf). My proposed workaround, is to just add `--prepend-include $this_script_dir/usr/share/autoconf` as a command line option to the real autoconf script, which we call from the wrapper script. This would have the benefit of also fixing the other instances of this that are present in the config file, but that we aren't using in our configure script. In addition to this, I made the script conform better to the current standard for these bundle creation scripts. The output should end up in a sub directory of `build`. No temp dirs should be used instead of the build dir. I also added some automation for setting the target platform tuple based on `uname` for the most common platforms, and added the ability to override for any others, without having to edit the file. ------------- Commit messages: - JDK-8340075 Changes: https://git.openjdk.org/jdk/pull/20978/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20978&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8340075 Stats: 55 lines in 1 file changed: 21 ins; 9 del; 25 mod Patch: https://git.openjdk.org/jdk/pull/20978.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/20978/head:pull/20978 PR: https://git.openjdk.org/jdk/pull/20978
