Generalize target.h to support more targets automatically.

include/ring-core/target.h

@@ -34,12 +34,6 @@
 #elif defined(__ARMEL__) || defined(_M_ARM)
 #define OPENSSL_32_BIT
 #define OPENSSL_ARM
-#elif defined(__loongarch_lp64)
-#define OPENSSL_64_BIT
-#elif defined(__riscv) && __SIZEOF_POINTER__ == 8
-#define OPENSSL_64_BIT
-#elif defined(__wasm__)
-#define OPENSSL_32_BIT
 // All of following architectures are only supported when `__BYTE_ORDER__` can be used to detect
 // endianness (in crypto/internal.h).
 #elif !defined(__BYTE_ORDER__)
@@ -48,20 +42,13 @@
 #elif !(defined(__ORDER_LITTLE_ENDIAN__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)) && \
       !(defined(__ORDER_BIG_ENDIAN__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
 #error "Unsupported endianness"
-#elif defined(__MIPSEL__) && !defined(__LP64__)
-#define OPENSSL_32_BIT
-#elif defined(__MIPSEL__) && defined(__LP64__)
+#elif defined(__LP64__)
 #define OPENSSL_64_BIT
-#elif defined(__MIPSEB__) && !defined(__LP64__)
+#elif defined(__ILP32__)
 #define OPENSSL_32_BIT
-#elif defined(__PPC64__) || defined(__powerpc64__)
-#define OPENSSL_64_BIT
-#elif (defined(__PPC__) || defined(__powerpc__)) && defined(_BIG_ENDIAN)
+// Versions of GCC before 10.0 didn't define `__ILP32__` for all 32-bit targets.
+#elif defined(__MIPSEL__) || defined(__MIPSEB__) || defined(__PPC__) || defined(__powerpc__)
 #define OPENSSL_32_BIT
-#elif defined(__s390x__)
-#define OPENSSL_64_BIT
-#elif defined(__sparc_v9__) && defined(__LP64__)
-#define OPENSSL_64_BIT
 #else
 #error "Unknown target CPU"
 #endif