zydis: build static lib

* for GCC2 build with a modern GCC as suggested by waddlesplash
* make the headers compatible with GCC2

Change-Id: Ice74eeddbe10bc8f9cf9ae90baa833a46bb3c676
Reviewed-on: https://review.haiku-os.org/c/haiku/+/7848
Reviewed-by: waddlesplash <[email protected]>

headers/libs/zydis/Zycore/Format.h

@@ -61,10 +61,12 @@ ZYAN_INLINE ZyanU64 ZyanAbsI64(ZyanI64 x)
     // INT_MIN special case. Can't use the value directly because GCC thinks
     // it's too big for an INT64 literal, however is perfectly happy to accept
     // this expression. This is also hit INT64_MIN is defined in `stdint.h`.
+#if defined(__GNUC__) && (__GNUC__ >= 4)
     if (x == (-0x7fffffffffffffff - 1))
     {
         return 0x8000000000000000u;
     }
+#endif
 
     return (ZyanU64)(x < 0 ? -x : x);
 }

headers/libs/zydis/Zydis/FormatterBuffer.h

@@ -127,7 +127,9 @@ typedef ZyanU8 ZydisTokenType;
 /* Token                                                                                          */
 /* ---------------------------------------------------------------------------------------------- */
 
+#if !defined(__HAIKU__) || (defined(__GNUC__) && (__GNUC__ >= 4))
 #pragma pack(push, 1)
+#endif
 
 /**
  * Defines the `ZydisFormatterToken` struct.
@@ -147,7 +149,9 @@ typedef struct ZydisFormatterToken_
     ZyanU8 next;
 } ZydisFormatterToken;
 
+#if !defined(__HAIKU__) || (defined(__GNUC__) && (__GNUC__ >= 4))
 #pragma pack(pop)
+#endif
 
 /**
  * Defines the `ZydisFormatterTokenConst` data-type.

headers/libs/zydis/Zydis/ShortString.h

@@ -44,7 +44,7 @@ extern "C" {
 /* Enums and types                                                                                */
 /* ============================================================================================== */
 
-#if !defined(ZYAN_APPLE)
+#if !defined(ZYAN_APPLE) && (!defined(__HAIKU__) || (defined(__GNUC__) && (__GNUC__ >= 4)))
 #   pragma pack(push, 1)
 #endif
 
@@ -68,7 +68,7 @@ typedef struct ZydisShortString_
     ZyanU8 size;
 } ZydisShortString;
 
-#if !defined(ZYAN_APPLE)
+#if !defined(ZYAN_APPLE) && (!defined(__HAIKU__) || (defined(__GNUC__) && (__GNUC__ >= 4)))
 #   pragma pack(pop)
 #endif