typedef unsigned char byte; causes syntax error C2144

[Asif Hirai]

I am using a library crypto++ in my current program, and whenever I use any of the header files in the library, it throws this syntax error at compile time:
1>c:\users\**\documents\visual studio 2008\projects\libertus\dependencies\sources\cryptopp\config.h(100) : error C2144: syntax error : 'unsigned char' should be preceded by ';'
Well, I find the offending file and look to see that there is no reason to put a semi-colin there, because here is the code at line 100 of config.h:
typedef unsigned char byte; // put in global namespace to avoid ambiguity with other byte typedefs
There are no lines of c code before that one in the file, everything before that is define statements. Maybe this is a rookie mistake, but could you please at least point me in the right direction to fix this?

[freddy92]

Errors like this are pretty much always caused by the code around the line rather than the line itself. In this case it must be from one of the 99 lines before this one. Posting those would probably help.

[Asif Hirai]

Here you go.

#ifndef CRYPTOPP_CONFIG_H
#define CRYPTOPP_CONFIG_H

// ***************** Important Settings ********************

// define this if running on a big-endian CPU
#if !defined(IS_LITTLE_ENDIAN) && (defined(__BIG_ENDIAN__) || defined(__sparc) || defined(__sparc__) || defined(__hppa__) || defined(__MIPSEB__) || defined(__ARMEB__) || (defined(__MWERKS__) && !defined(__INTEL__)))
#	define IS_BIG_ENDIAN
#endif

// define this if running on a little-endian CPU
// big endian will be assumed if IS_LITTLE_ENDIAN is not defined
#ifndef IS_BIG_ENDIAN
#	define IS_LITTLE_ENDIAN
#endif

// define this if you want to disable all OS-dependent features,
// such as sockets and OS-provided random number generators
// #define NO_OS_DEPENDENCE

// Define this to use features provided by Microsoft's CryptoAPI.
// Currently the only feature used is random number generation.
// This macro will be ignored if NO_OS_DEPENDENCE is defined.
#define USE_MS_CRYPTOAPI

// Define this to 1 to enforce the requirement in FIPS 186-2 Change Notice 1 that only 1024 bit moduli be used
#ifndef DSA_1024_BIT_MODULUS_ONLY
#	define DSA_1024_BIT_MODULUS_ONLY 1
#endif

// ***************** Less Important Settings ***************

// define this to retain (as much as possible) old deprecated function and class names
// #define CRYPTOPP_MAINTAIN_BACKWARDS_COMPATIBILITY

#define GZIP_OS_CODE 0

// Try this if your CPU has 256K internal cache or a slow multiply instruction
// and you want a (possibly) faster IDEA implementation using log tables
// #define IDEA_LARGECACHE

// Define this if, for the linear congruential RNG, you want to use
// the original constants as specified in S.K. Park and K.W. Miller's
// CACM paper.
// #define LCRNG_ORIGINAL_NUMBERS

// choose which style of sockets to wrap (mostly useful for cygwin which has both)
#define PREFER_BERKELEY_STYLE_SOCKETS
// #define PREFER_WINDOWS_STYLE_SOCKETS

// set the name of Rijndael cipher, was "Rijndael" before version 5.3
#define CRYPTOPP_RIJNDAEL_NAME "AES"

// ***************** Important Settings Again ********************
// But the defaults should be ok.

// namespace support is now required
#ifdef NO_NAMESPACE
#	error namespace support is now required
#endif

// Define this to workaround a Microsoft CryptoAPI bug where
// each call to CryptAcquireContext causes a 100 KB memory leak.
// Defining this will cause Crypto++ to make only one call to CryptAcquireContext.
#define WORKAROUND_MS_BUG_Q258000

#ifdef CRYPTOPP_DOXYGEN_PROCESSING
// Avoid putting "CryptoPP::" in front of everything in Doxygen output
#	define CryptoPP
#	define NAMESPACE_BEGIN(x)
#	define NAMESPACE_END
// Get Doxygen to generate better documentation for these typedefs
#	define DOCUMENTED_TYPEDEF(x, y) class y : public x {};
#else
#	define NAMESPACE_BEGIN(x) namespace x {
#	define NAMESPACE_END }
#	define DOCUMENTED_TYPEDEF(x, y) typedef x y;
#endif
#define ANONYMOUS_NAMESPACE_BEGIN namespace {
#define USING_NAMESPACE(x) using namespace x;
#define DOCUMENTED_NAMESPACE_BEGIN(x) namespace x {
#define DOCUMENTED_NAMESPACE_END }

// What is the type of the third parameter to bind?
// For Unix, the new standard is ::socklen_t (typically unsigned int), and the old standard is int.
// Unfortunately there is no way to tell whether or not socklen_t is defined.
// To work around this, TYPE_OF_SOCKLEN_T is a macro so that you can change it from the makefile.
#ifndef TYPE_OF_SOCKLEN_T
#	if defined(_WIN32) || defined(__CYGWIN__)
#		define TYPE_OF_SOCKLEN_T int
#	else
#		define TYPE_OF_SOCKLEN_T ::socklen_t
#	endif
#endif

#if defined(__CYGWIN__) && defined(PREFER_WINDOWS_STYLE_SOCKETS)
#	define __USE_W32_SOCKETS
#endif