From 859d359b6cf6ec7d41dfa9334979474a1f8158e7 Mon Sep 17 00:00:00 2001
From: brandon s allbery kf8nh <allbery.b@gmail.com>
Date: Thu, 17 Oct 2024 14:58:49 -0400
Subject: [PATCH] add new non-compile-affecting options for ghc 9.12

---
 Cabal/src/Distribution/Simple/Program/GHC.hs |  1 +
 changelog.d/pr-10468                         | 26 ++++++++++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 changelog.d/pr-10468

diff --git a/Cabal/src/Distribution/Simple/Program/GHC.hs b/Cabal/src/Distribution/Simple/Program/GHC.hs
index ce0ea9db92a..86320cc9472 100644
--- a/Cabal/src/Distribution/Simple/Program/GHC.hs
+++ b/Cabal/src/Distribution/Simple/Program/GHC.hs
@@ -329,6 +329,7 @@ normaliseGhcArgs (Just ghcVersion) PackageDescription{..} ghcArgs
           ]
         , from [8, 2] ["-fmax-uncovered-patterns", "-fmax-errors"]
         , from [8, 4] $ to [8, 6] ["-fmax-valid-substitutions"]
+        , from [9, 12] ["-fmax-forced-spec-args", "-fwrite-if-compression"]
         ]
 
     dropIntFlag :: Bool -> String -> String -> Any
diff --git a/changelog.d/pr-10468 b/changelog.d/pr-10468
new file mode 100644
index 00000000000..e8f3c1a952a
--- /dev/null
+++ b/changelog.d/pr-10468
@@ -0,0 +1,26 @@
+synopsis: Add new non-compilation-affecting options from ghc 9.12
+packages: Cabal
+prs: #10468
+significance:
+
+description: {
+
+- ghc 9.12 adds several new command line options, divided between
+  `LANGUAGE`s (already added), warnings, new preprocessor control options,
+  and compilation control options. Only one of these doesn't affect
+  compilation and has been added to the recomp filters. A second needed
+  to be added to the list of options requiring `Int` parameters.
+
+  The new options, excluding warning and language options, are:
+
+  * `-fexpose-overloaded-unfoldings`
+  * `-fmax-forced-spec-args`
+  * `-fno-expose-overloaded-unfoldings`
+  * `-fobject-determinism`
+  * `-fwrite-if-compression`
+  * `-optCmmP`
+  * `-optJSP`
+  * `-pgmCmmP`
+  * `-pgmJSP`
+
+}