commit b668fe879621640bc60f89b3aaefce69781a2a48 · pyrox.dev/nixpkgs

+19 -9
pkgs/development/compilers/gcc/common/configure-flags.nix
···

       27
       27
        
       assert cloog != null -> stdenv.lib.versionOlder version "5";

     

       28
       28
        
       assert langJava -> stdenv.lib.versionOlder version "7";

     

       29
       29
        
       

     

       30
       30
       +
       # Note [Windows Exception Handling]

     

       31
       31
       +
       # sjlj (short jump long jump) exception handling makes no sense on x86_64,

     

       32
       32
       +
       # it's forcably slowing programs down as it produces a constant overhead.

     

       33
       33
       +
       # On x86_64 we have SEH (Structured Exception Handling) and we should use

     

       34
       34
       +
       # that. On i686, we do not have SEH, and have to use sjlj with dwarf2.

     

       35
       35
       +
       # Hence it's now conditional on x86_32 (i686 is 32bit).

     

       36
       36
       +
       #

     

       37
       37
       +
       # ref: https://stackoverflow.com/questions/15670169/what-is-difference-between-sjlj-vs-dwarf-vs-seh

     

       38
       38
       +
       

     

       39
       39
       +
       

     

       30
       40
        
       let

     

       31
       41
        
         inherit (stdenv)

     

       32
       42
        
           buildPlatform hostPlatform targetPlatform

     
···

       58
       68
        
             "--with-gnu-as"

     

       59
       69
        
             "--with-gnu-ld"

     

       60
       70
        
             "--disable-debug"

     

       61
       61
       -
             "--enable-sjlj-exceptions"

     

       62
       71
        
             "--disable-win32-registry"

     

       72
       72
       +
             "--enable-hash-synchronization"

     

       73
       73
       +
             "--enable-libssp"

     

       74
       74
       +
             "--disable-nls"

     

       75
       75
       +
             # To keep ABI compatibility with upstream mingw-w64

     

       76
       76
       +
             "--enable-fully-dynamic-string"      

     

       77
       77
       +
           ] ++ lib.optionals (crossMingw && targetPlatform.isx86_32) [

     

       78
       78
       +
             # See Note [Windows Exception Handling]

     

       79
       79
       +
             "--enable-sjlj-exceptions"

     

       80
       80
       +
             "--with-dwarf2"

     

       63
       81
        
           ] else [

     

       64
       82
        
             (if crossDarwin then "--with-sysroot=${lib.getLib libcCross}/share/sysroot"

     

       65
       83
        
              else                "--with-headers=${lib.getDev libcCross}${libcCross.incdir or "/include"}")

     
···

       80
       98
        
           ] ++ lib.optionals (targetPlatform.libc == "musl") [

     

       81
       99
        
             # musl at least, disable: https://git.buildroot.net/buildroot/commit/?id=873d4019f7fb00f6a80592224236b3ba7d657865

     

       82
       100
        
             "--disable-libmpx"

     

       83
       83
       -
           ] ++ lib.optionals crossMingw [

     

       84
       84
       -
             "--enable-sjlj-exceptions"

     

       85
       85
       -
             "--enable-hash-synchronization"

     

       86
       86
       -
             "--enable-libssp"

     

       87
       87
       -
             "--disable-nls"

     

       88
       88
       -
             "--with-dwarf2"

     

       89
       89
       -
             # To keep ABI compatibility with upstream mingw-w64

     

       90
       90
       -
             "--enable-fully-dynamic-string"

     

       91
       101
        
           ] ++ lib.optional (targetPlatform.libc == "newlib") "--with-newlib"

     

       92
       102
        
             ++ lib.optional (targetPlatform.libc == "avrlibc") "--with-avrlibc"

     

       93
       103
        
           );