games/mame: Allow builds with unsupported gcc9.

Signed-off-by: B. Watson <yalhcru@gmail.com>

1 files changed, 60 insertions, 0 deletions

diff --git a/games/mame/README_gcc9.txt b/games/mame/README_gcc9.txt
new file mode 100644
index 0000000000..f89329b1d2
--- /dev/null
+++ b/games/mame/README_gcc9.txt
@@ -0,0 +1,60 @@
+As of mame-0.215, it's no longer possible to compile mame with Slack
+14.2's gcc-5. mame-0.214 is the last version that can be built, so this
+SlackBuild is stuck at that version.
+
+However, if you're willing to go beyond stock Slackware, it's possible
+to build newer versions of mame. There are gcc-9.2.0 packages for 14.2
+here:
+
+http://slackware.uk/slackware/unsupported/gcc-9.2.0-for-Slackware-14.2/
+
+Make sure you read the README, then download the gcc-9.2.0 and
+gcc-g++-9.2.0 .txz packages for your architecture (you won't need the
+other languages such as fortran and go). Before installing them, remove
+your stock gcc and gcc-g++ packages with:
+
+# removepkg gcc gcc-g++
+
+(You don't have to remove the other languages such as gcc-fortran here)
+
+Install the gcc packages you just downloaded:
+
+# installpkg gcc-*9.2.0*.txz
+
+Then you can download the newer mame source from:
+
+https://github.com/mamedev/mame/releases/
+
+You want the source code (filename such as mame0217.tar.gz). Save the
+file in the same directory as the SlackBuild, cd into that directory,
+then build mame with a command such as:
+
+VERSION=0.217 ./mame.SlackBuild
+
+...where VERSION matches the mame source you just downloaded (with a
+dot after the 0, as shown above). If all goes well, you should have a
+shiny new mame package in /tmp, which you can install with installpkg
+or upgradepkg.
+
+After the build finishes, you should revert your gcc and g++ packages
+back to the standard Slackware ones. You can do this with:
+
+# removepkg gcc gcc-g++
+# slackpkg install 'gcc-*'
+
+Notes:
+
+- Do not ask for help with this via the SlackBuilds.org mailing list. If
+  you run into problems, you can contact me (B. Watson, yalhcru@gmail.com)
+  directly via email, or on Freenode IRC as user Urchlay.
+
+- I may not test every mame release with gcc-9.2.0. 0.217 definitely
+  works, future releases *probably* will. When Slackware 15.0 is
+  released, things should get back to normal.
+
+- The README for this build states that mame compiles require around
+  3.5GB in /tmp. For 0.217, this number is more like 4.5GB.
+
+- There is an llvm-8.0.1 in 14.2's /extra. Although the mame documentation
+  claims that this version of llvm is supported, I can't get mame to
+  compile with it.