Fix warnings

Makefile.am

@@ -45,7 +45,7 @@ secure_enclave.edl: secure_enclave/secure_enclave.edl
 ## AM_CFLAGS = 
 ## AM_CXXFLAGS = 
 
-AM_CPPFLAGS += -DSKALE_SGX=1 -DBINARY_OUTPUT=1  -Ileveldb/include -IlibBLS/bls -IlibBLS/libff -IlibBLS -fno-builtin-memset $(GMP_CPPFLAGS)
+AM_CPPFLAGS += -Wall -DSKALE_SGX=1 -DBINARY_OUTPUT=1  -Ileveldb/include -IlibBLS/bls -IlibBLS/libff -IlibBLS -fno-builtin-memset $(GMP_CPPFLAGS)
 
 ## Additional targets to remove with 'make clean'. You must list
 ## any edger8r generated files here.

secure_enclave/Makefile.am

@@ -63,7 +63,7 @@ ENCLAVE_KEY=$(ENCLAVE)_private.pem
 ## Additional Automake flags needed to build the enclave.
 ##
 
-AM_CPPFLAGS += $(TGMP_CPPFLAGS) -I../trusted_libff  -I../sgx-sdk-build/sgxsdk/include/libcxx \
+AM_CPPFLAGS +=  -Wall $(TGMP_CPPFLAGS) -I../trusted_libff  -I../sgx-sdk-build/sgxsdk/include/libcxx \
               -I../intel-sgx-ssl/Linux/package/include
 AM_CXXFLAGS += -fno-builtin
 

sgxd.c

@@ -73,7 +73,7 @@ unsigned char *carray2Hex(const uint8_t *d, int _len) {
 
 uint8_t* hex2carray(unsigned char * _hex, uint64_t *_bin_len) {
 
-  uint64_t len = strlen(_hex);
+  uint64_t len = strlen((char*)_hex);
 
 
   if (len == 0 && len % 2 == 1)
@@ -182,7 +182,7 @@ int main(int argc, char *argv[]) {
 
   unsigned char* errMsg = calloc(1024,1);
 
-  strncpy(keyArray, key, 128);
+  strncpy((char)*keyArray, (char*)key, 128);
 
   int err_status = 0;