Support for 32-bit architectures

src/lib/asn/ngap.cpp

@@ -8,9 +8,12 @@
 
 #include "ngap.hpp"
 #include "utils.hpp"
+#include "utils/common.hpp"
 
 #include <algorithm>
 #include <functional>
+#include <exception>
+#include <stdexcept>
 
 #include <asn/ngap/ASN_NGAP_AMFConfigurationUpdate.h>
 #include <asn/ngap/ASN_NGAP_AMFConfigurationUpdateAcknowledge.h>
@@ -858,9 +861,8 @@ static bool GetProtocolIeInfo(const ASN_NGAP_NGAP_PDU &pdu, const asn_TYPE_descr
     // Therefore no problem is expected since the structs are already standard layout.
 
     // Assert that the machine is Little Endian. (This assumption is used for presentEnumSize and related)
-#if 'ABCD' != 0x41424344
-#error "Big Endian architecture is not supported"
-#endif
+    if (!utils::IsLittleEndian())
+        throw std::runtime_error("Big Endian architecture is not supported");
 
     asn_TYPE_descriptor_t *desc;
     void *ptr;

src/utils/common.cpp

@@ -18,6 +18,7 @@
 #include <stdexcept>
 #include <thread>
 
+#include <arpa/inet.h>
 #include <unistd.h>
 
 static_assert(sizeof(char) == sizeof(uint8_t));
@@ -324,3 +325,8 @@ void utils::Trim(std::stringstream &s)
     Trim(str);
     s.str(str);
 }
+
+bool utils::IsLittleEndian()
+{
+    return htonl(1453) != 1453;
+}

src/utils/common.hpp

@@ -40,6 +40,7 @@ bool IsNumeric(const std::string &str);
 void AssertNodeName(const std::string &str);
 void Trim(std::string &str);
 void Trim(std::stringstream &str);
+bool IsLittleEndian();
 
 template <typename T>
 inline void ClearAndDelete(std::vector<T *> &vector)