diff --git a/pkgs/development/compilers/ghc/common-hadrian.nix b/pkgs/development/compilers/ghc/common-hadrian.nix
index b8064fd4ee79..9d2c4afef217 100644
--- a/pkgs/development/compilers/ghc/common-hadrian.nix
+++ b/pkgs/development/compilers/ghc/common-hadrian.nix
@@ -261,6 +261,22 @@
           hash = "sha256-L3FQvcm9QB59BOiR2g5/HACAufIG08HiT53EIOjj64g=";
         })
       ]
+      # Fix build with gcc15
+      # https://gitlab.haskell.org/ghc/ghc/-/issues/25662
+      # https://gitlab.haskell.org/ghc/ghc/-/merge_requests/13863
+      ++
+        lib.optionals
+          (
+            lib.versionOlder version "9.12.3"
+            && !(lib.versionAtLeast version "9.10.2" && lib.versionOlder version "9.12")
+          )
+          [
+            (fetchpatch {
+              name = "ghc-hp2ps-c-gnu17.patch";
+              url = "https://src.fedoraproject.org/rpms/ghc/raw/9c26d7c3c3de73509a25806e5663b37bcf2e0b4e/f/hp2ps-C-gnu17.patch";
+              hash = "sha256-Vr5wkiSE1S5e+cJ8pWUvG9KFpxtmvQ8wAy08ElGNp5E=";
+            })
+          ]
       # Fixes stack overrun in rts which crashes an process whenever
       # freeHaskellFunPtr is called with nixpkgs' hardening flags.
       # https://gitlab.haskell.org/ghc/ghc/-/issues/25485
diff --git a/pkgs/development/compilers/ghc/common-make-native-bignum.nix b/pkgs/development/compilers/ghc/common-make-native-bignum.nix
index 922875e6b4e1..cf9bd6e7e530 100644
--- a/pkgs/development/compilers/ghc/common-make-native-bignum.nix
+++ b/pkgs/development/compilers/ghc/common-make-native-bignum.nix
@@ -345,6 +345,17 @@ stdenv.mkDerivation (
       })
     ]
 
+    # Fix build with gcc15
+    # https://gitlab.haskell.org/ghc/ghc/-/issues/25662
+    # https://gitlab.haskell.org/ghc/ghc/-/merge_requests/13863
+    ++ lib.optionals (lib.versions.majorMinor version == "9.4") [
+      (fetchpatch {
+        name = "ghc-hp2ps-c-gnu17.patch";
+        url = "https://src.fedoraproject.org/rpms/ghc/raw/9c26d7c3c3de73509a25806e5663b37bcf2e0b4e/f/hp2ps-C-gnu17.patch";
+        hash = "sha256-Vr5wkiSE1S5e+cJ8pWUvG9KFpxtmvQ8wAy08ElGNp5E=";
+      })
+    ]
+
     ++ [
       # Don't generate code that doesn't compile when --enable-relocatable is passed to Setup.hs
       # Can be removed if the Cabal library included with ghc backports the linked fix