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-rw-r--r--pkgs/development/tools/build-managers/jam/default.nix3
1 files changed, 3 insertions, 0 deletions
diff --git a/pkgs/development/tools/build-managers/jam/default.nix b/pkgs/development/tools/build-managers/jam/default.nix
index 2a40c59709843..bf06954df4dee 100644
--- a/pkgs/development/tools/build-managers/jam/default.nix
+++ b/pkgs/development/tools/build-managers/jam/default.nix
@@ -7,6 +7,9 @@ let
     depsBuildBuild = [ buildPackages.stdenv.cc ];
     nativeBuildInputs = [ bison ];
 
+    # Jam uses c89 conventions
+    env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-std=c89";
+
     # Jambase expects ar to have flags.
     preConfigure = ''
       export AR="$AR rc"