ghc: provide JavaScript CPP command for ghcjs build (#456260)

2025-10-31 16:07:17 +00:00
parent bd852e8bea 44f1db823f
commit 8f1430de4d
1 changed files with 6 additions and 0 deletions
--- a/pkgs/development/compilers/ghc/common-hadrian.nix
+++ b/pkgs/development/compilers/ghc/common-hadrian.nix
@@ -859,6 +859,12 @@ stdenv.mkDerivation (
      ghc-settings-edit "$settingsFile" \
      "windres command" "${toolPath "windres" installCC}"
    ''
+    + lib.optionalString (stdenv.targetPlatform.isGhcjs && lib.versionOlder version "9.12") ''
+      ghc-settings-edit "$settingsFile" \
+        "JavaScript CPP command" "${toolPath "cc" installCC}"
+      ghc-settings-edit "$settingsFile" \
+        "JavaScript CPP flags" "-E -CC -Wno-unicode -nostdinc"
+    ''
    + ''

      # Install the bash completion file.