Move CUDA array into function

Author: mborland

include/boost/crypt/hash/sha256.hpp

@@ -78,9 +78,6 @@ namespace sha256_detail {
 
 #ifndef BOOST_CRYPT_HAS_CUDA
 BOOST_CRYPT_INLINE_CONSTEXPR boost::crypt::array<boost::crypt::uint32_t, 64> sha256_k = {
-#else
-__constant__ boost::crypt::uint32_t sha256_k[64] = {
-#endif
     0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b,
     0x59f111f1, 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01,
     0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7,
@@ -95,7 +92,7 @@ __constant__ boost::crypt::uint32_t sha256_k[64] = {
     0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
     0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
 };
-
+#endif
 
 // https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf
 // See section 4.1.2
@@ -134,6 +131,27 @@ BOOST_CRYPT_GPU_ENABLED constexpr auto sha_maj(const boost::crypt::uint32_t x, c
 // See definitions from the RFC on the rounds
 constexpr auto sha256_hasher::sha256_process_message_block() -> void
 {
+    // On host we prefer this array to be static but,
+    // in a CUDA environment it solves linking problems to move into the function
+
+    #ifdef BOOST_CRYPT_HAS_CUDA
+    constexpr boost::crypt::uint32_t sha256_k[64] = {
+    0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b,
+    0x59f111f1, 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01,
+    0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7,
+    0xc19bf174, 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
+    0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, 0x983e5152,
+    0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
+    0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc,
+    0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
+    0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819,
+    0xd6990624, 0xf40e3585, 0x106aa070, 0x19a4c116, 0x1e376c08,
+    0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f,
+    0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
+    0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
+    };
+    #endif
+
     using namespace sha256_detail;
     boost::crypt::array<boost::crypt::uint32_t, 64> W {};