alan_2: unbreak on gcc 14

  makefile = "Makefile.unix";

  # Add a workarounf for -fno-common tollchains like upstream gcc-10.

  env.NIX_CFLAGS_COMPILE = toString [

    # Add a workaround for -fno-common toolchains like upstream gcc-10.

    # alan-3 is already fixed, but the backport is nontrivial.

  env.NIX_CFLAGS_COMPILE = "-fcommon";

    "-fcommon"

    # smScSema.c:142:11: error: assignment to 'unsigned char *' from incompatible pointer type 'unsigned char **' [-Wincompatible-pointer-types]

    "-Wno-error=incompatible-pointer-types"

    # smScSema.c:183:10: error: implicit declaration of function 'read'; did you mean 'fread'? [-Wimplicit-function-declaration]

    "-Wno-error=implicit-function-declaration"

  ];

  installPhase = ''

    mkdir -p $out/bin $out/share/alan2