Fix lua bindings for 64-bit compilation

Tested on swig 4.0.1 and lua 5.3.5

README.developer

@@ -333,6 +333,11 @@ Additionally, you may want to add the '--with-perl-binding' or
 '--with-python-binding' or '--with-tcl-binding' or '--with-lua-binding' if you are
 interested in SWIG binding support for those scripting languages.
 
+For LUA bindinds if you run "lua luatest.lua" and see this error message:
+luatest.lua:44: Error in Rig::set_mode (arg 2), expected 'rmode_t' got 'string'
+This means you need to upgrade both swig and lua for 64-bit lua support
+This is known to work on swig 4.0.1 and lua 5.3.5
+
 NOTE: The bootstrap script has only to be run the first time after a fresh
 checkout or when a Makefile.am or other build file is modified or added.
 

bindings/luatest.lua

@@ -112,6 +112,9 @@ function doStartup()
 
     if sw2 > 0 then D = 'S' else D = 'N' end
     print(string.format("Latitude:\t%4.4f, %4.0f° %.0f' %2.0f\" %1s\trecoded: %9.4f", lat1, deg2, mins2, sec2, D, lat3))
+    print(string.format("The next two lines should show 0x8000000000000000"));
+    print(string.format("RIG_MODE_TESTS_MAX: 0x%08x", Hamlib.RIG_MODE_TESTS_MAX));
+    print(string.format("RIG_FUNC_BIT63: 0x%08x", Hamlib.RIG_FUNC_BIT63));
 
 end
 

include/hamlib/rig.h

@@ -85,11 +85,13 @@
    double-precision floating point type internally for number
    representations (max 53 bits of precision) so makes a string
    constant from a constant number literal using ull */
-/* #define CONSTANT_64BIT_FLAG(BIT) (1 << (BIT)) */
+// #define CONSTANT_64BIT_FLAG(BIT) (1 << (BIT))
+// #define SWIGLUAHIDE
 /* But this appears to have been fixed so we'll use the correct one now 
    If you have the older version of SWIG comment out this line and use
-   the one above */
-#define CONSTANT_64BIT_FLAG(BIT) (1ull << (BIT))
+   the two above */
+// This 1ul definition works on swig 4.0.1 and lua 5.3.5
+#define CONSTANT_64BIT_FLAG(BIT) (1ul << (BIT))
 #endif
 
 __BEGIN_DECLS
@@ -872,8 +874,8 @@ typedef uint64_t setting_t;
 #define RIG_FUNC_TBURST     CONSTANT_64BIT_FLAG (29)   /*!< \c TBURST -- 1750 Hz tone burst */
 #define RIG_FUNC_TUNER      CONSTANT_64BIT_FLAG (30)   /*!< \c TUNER -- Enable automatic tuner */
 #define RIG_FUNC_XIT        CONSTANT_64BIT_FLAG (31)   /*!< \c XIT -- Transmitter Incremental Tuning */
-#ifndef SWIGLUA
-/* Hide the top 32 bits from the Lua binding as they can't be represented */
+#ifndef SWIGLUAHIDE
+/* Hide the top 32 bits from the old Lua binding as they can't be represented */
 #define RIG_FUNC_NB2        CONSTANT_64BIT_FLAG (32)   /*!< \c NB2 -- 2nd Noise Blanker */
 #define RIG_FUNC_CSQL       CONSTANT_64BIT_FLAG (33)   /*!< \c CSQL -- DCS Squelch setting */
 #define RIG_FUNC_AFLT       CONSTANT_64BIT_FLAG (34)   /*!< \c AFLT -- AF Filter setting */
@@ -964,7 +966,7 @@ typedef uint64_t rmode_t;
 #define    RIG_MODE_AMN       CONSTANT_64BIT_FLAG (29)  /*!< \c AM-N -- Narrow band AM mode IC-R30 */
 #define    RIG_MODE_PSK       CONSTANT_64BIT_FLAG (30)  /*!< \c PSK - Kenwood PSK and others */
 #define    RIG_MODE_PSKR      CONSTANT_64BIT_FLAG (31)  /*!< \c PSKR - Kenwood PSKR and others */
-#ifndef SWIGLUA
+#ifndef SWIGLUAHIDE
 /* hide the top 32 bits from the Lua binding as they will not work */
 #define    RIG_MODE_DD        CONSTANT_64BIT_FLAG (32)  /*!< \c DD Mode IC-9700 */
 #define    RIG_MODE_C4FM      CONSTANT_64BIT_FLAG (33)  /*!< \c Yaesu C4FM mode */