public: add definitions for PowerPC

This doesn't mean we have a port but at least it allows building for ppc64el

public/build.c

@@ -162,6 +162,10 @@ const char *Q_ArchitectureStringByID( const int arch, const uint abi, const int
 		return "e2k";
 	case ARCHITECTURE_JS:
 		return "javascript";
+	case ARCHITECTURE_PPC:
+		return endianness == ENDIANNESS_LITTLE ?
+			( is64 ? "ppc64el" : "ppcel" ):
+			( is64 ? "ppc64" : "ppc" );
 	case ARCHITECTURE_MIPS:
 		return endianness == ENDIANNESS_LITTLE ?
 			( is64 ? "mips64el" : "mipsel" ):

public/build.h

@@ -76,6 +76,7 @@ Then you can use another oneliner to query all variables:
 #undef XASH_NETBSD
 #undef XASH_OPENBSD
 #undef XASH_POSIX
+#undef XASH_PPC
 #undef XASH_RISCV
 #undef XASH_RISCV_DOUBLEFP
 #undef XASH_RISCV_SINGLEFP
@@ -195,6 +196,11 @@ Then you can use another oneliner to query all variables:
 #elif defined __e2k__
 	#define XASH_64BIT 1
 	#define XASH_E2K 1
+#elif defined __PPC__ || defined __powerpc__
+	#define XASH_PPC 1
+	#if defined __PPC64__ || defined __powerpc64__
+		#define XASH_64BIT 1
+	#endif
 #elif defined _M_ARM // msvc
 	#define XASH_ARM 7
 	#define XASH_ARM_HARDFP 1

public/buildenums.h

@@ -89,6 +89,7 @@ GNU General Public License for more details.
 #define ARCHITECTURE_JS      6
 #define ARCHITECTURE_E2K     7
 #define ARCHITECTURE_RISCV   8
+#define ARCHITECTURE_PPC     9
 
 #if XASH_AMD64
 	#define XASH_ARCHITECTURE ARCHITECTURE_AMD64
@@ -104,6 +105,8 @@ GNU General Public License for more details.
 	#define XASH_ARCHITECTURE ARCHITECTURE_E2K
 #elif XASH_RISCV
 	#define XASH_ARCHITECTURE ARCHITECTURE_RISCV
+#elif XASH_PPC
+	#define XASH_ARCHITECTURE ARCHITECTURE_PPC
 #else
 	#error
 #endif

public/tests/test_build.c

@@ -47,6 +47,12 @@ static struct
 { ARCHITECTURE_MIPS, 0, ENDIANNESS_LITTLE, true,  "mips64el" },
 { ARCHITECTURE_MIPS, 0, ENDIANNESS_LITTLE, false, "mipsel" },
 
+// all possible PowerPC names
+{ ARCHITECTURE_PPC, 0, ENDIANNESS_BIG,    true,  "ppc64" },
+{ ARCHITECTURE_PPC, 0, ENDIANNESS_BIG,    false, "ppc" },
+{ ARCHITECTURE_PPC, 0, ENDIANNESS_LITTLE, true,  "ppc64el" },
+{ ARCHITECTURE_PPC, 0, ENDIANNESS_LITTLE, false, "ppcel" },
+
 // All ARM is little endian only (for now?)
 // Arm64 is always arm64, no matter the version (for now)
 // Arm64 don't care about hardfp bit