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-rw-r--r--pkgs/development/pharo/vm/build-vm-legacy.nix6
1 files changed, 6 insertions, 0 deletions
diff --git a/pkgs/development/pharo/vm/build-vm-legacy.nix b/pkgs/development/pharo/vm/build-vm-legacy.nix
index 88ef9f9efde89..6e00aa5f789ef 100644
--- a/pkgs/development/pharo/vm/build-vm-legacy.nix
+++ b/pkgs/development/pharo/vm/build-vm-legacy.nix
@@ -40,6 +40,12 @@ stdenv.mkDerivation rec {
     cd build/
   '';
 
+  # -fcommon is a workaround build failure on -fno-common toolchains like upstream
+  # gcc-10. Otherwise build fails as:
+  #   ld: CMakeFiles/pharo.dir/build/pharo-vm-2016.02.18/src/vm/gcc3x-cointerp.c.o:(.bss+0x88): multiple definition of
+  #     `sendTrace'; CMakeFiles/pharo.dir/build/pharo-vm-2016.02.18/src/vm/cogit.c.o:(.bss+0x84): first defined here
+  NIX_CFLAGS_COMPILE = "-fcommon";
+
   installPhase = ''
     mkdir -p "$prefix/lib/$name"