mediastreamer2是开源的网络传输媒体流的库

				#!/usr/local/bin/perl				# VC-32.pl - unified script for Microsoft Visual C++, covering Win32,				# Win64 and WinCE [follow $FLAVOR variable to trace the differences].				#								$ssl=	"ssleay32";				$crypto="libeay32";								$o='\\';				$cp='copy nul+';	# Timestamps get stuffed otherwise				$rm='del';								# C compiler stuff				$cc='cl';				if ($FLAVOR =~ /WIN64/)				    {				    # Note that we currently don't have /WX on Win64! There is a lot of				    # warnings, but only of two types:				    #				    # C4344: conversion from '__int64' to 'int/long', possible loss of data				    # C4267: conversion from 'size_t' to 'int/long', possible loss of data				    #				    # Amount of latter type is minimized by aliasing strlen to function of				    # own desing and limiting its return value to 2GB-1 (see e_os.h). As				    # per 0.9.8 release remaining warnings were explicitly examined and				    # considered safe to ignore.				    # 				    $base_cflags=' /W3 /Gs0 /GF /Gy /nologo -DWIN32_LEAN_AND_MEAN -DL_ENDIAN -DDSO_WIN32 -DOPENSSL_SYSNAME_WIN32 -DOPENSSL_SYSNAME_WINNT -DUNICODE -D_UNICODE';				    $base_cflags.=' -D_CRT_SECURE_NO_DEPRECATE'; # shut up VC8				    $opt_cflags=' /MD /Ox';				    $dbg_cflags=' /MDd /Od -DDEBUG -D_DEBUG';				    $lflags="/nologo /subsystem:console /opt:ref";				    }				elsif ($FLAVOR =~ /CE/)				    {				    # sanity check				    die '%OSVERSION% is not defined'	if (!defined($ENV{'OSVERSION'}));				    die '%PLATFORM% is not defined'	if (!defined($ENV{'PLATFORM'}));				    die '%TARGETCPU% is not defined'	if (!defined($ENV{'TARGETCPU'}));								    #				    # Idea behind this is to mimic flags set by eVC++ IDE...				    #				    $wcevers = $ENV{'OSVERSION'};			# WCENNN				    die '%OSVERSION% value is insane'	if ($wcevers !~ /^WCE([1-9])([0-9]{2})$/);				    $wcecdefs = "-D_WIN32_WCE=$1$2 -DUNDER_CE=$1$2";	# -D_WIN32_WCE=NNN				    $wcelflag = "/subsystem:windowsce,$1.$2";		# ...,N.NN								    $wceplatf =  $ENV{'PLATFORM'};				    $wceplatf =~ tr/a-z0-9 /A-Z0-9_/d;				    $wcecdefs .= " -DWCE_PLATFORM_$wceplatf";								    $wcetgt = $ENV{'TARGETCPU'};	# just shorter name...				    SWITCH: for($wcetgt) {					/^X86/		&& do {	$wcecdefs.=" -Dx86 -D_X86_ -D_i386_ -Di_386_";								$wcelflag.=" /machine:IX86";	last; };					/^ARMV4[IT]/	&& do { $wcecdefs.=" -DARM -D_ARM_ -D$wcetgt";								$wcecdefs.=" -DTHUMB -D_THUMB_" if($wcetgt=~/T$/);								$wcecdefs.=" -QRarch4T -QRinterwork-return";								$wcelflag.=" /machine:THUMB";	last; };					/^ARM/		&& do {	$wcecdefs.=" -DARM -D_ARM_ -D$wcetgt";								$wcelflag.=" /machine:ARM";	last; };					/^MIPSIV/	&& do {	$wcecdefs.=" -DMIPS -D_MIPS_ -DR4000 -D$wcetgt";								$wcecdefs.=" -D_MIPS64 -QMmips4 -QMn32";								$wcelflag.=" /machine:MIPSFPU";	last; };					/^MIPS16/	&& do {	$wcecdefs.=" -DMIPS -D_MIPS_ -DR4000 -D$wcetgt";								$wcecdefs.=" -DMIPSII -QMmips16";								$wcelflag.=" /machine:MIPS16";	last; };					/^MIPSII/	&& do {	$wcecdefs.=" -DMIPS -D_MIPS_ -DR4000 -D$wcetgt";								$wcecdefs.=" -QMmips2";								$wcelflag.=" /machine:MIPS";	last; };					/^R4[0-9]{3}/	&& do {	$wcecdefs.=" -DMIPS -D_MIPS_ -DR4000";								$wcelflag.=" /machine:MIPS";	last; };					/^SH[0-9]/	&& do {	$wcecdefs.=" -D$wcetgt -D_$wcetgt_ -DSHx";								$wcecdefs.=" -Qsh4" if ($wcetgt =~ /^SH4/);								$wcelflag.=" /machine:$wcetgt";	last; };					{ $wcecdefs.=" -D$wcetgt -D_$wcetgt_";					  $wcelflag.=" /machine:$wcetgt";			last; };				    }								    $cc='$(CC)';				    $base_cflags=' /W3 /WX /GF /Gy /nologo -DUNICODE -D_UNICODE -DOPENSSL_SYSNAME_WINCE -DWIN32_LEAN_AND_MEAN -DL_ENDIAN -DDSO_WIN32 -DNO_CHMOD -I$(WCECOMPAT)/include -DOPENSSL_SMALL_FOOTPRINT';				    $base_cflags.=" $wcecdefs";				    $opt_cflags=' /MC /O1i';	# optimize for space, but with intrinsics...				    $dbg_clfags=' /MC /Od -DDEBUG -D_DEBUG';				    $lflags="/nologo /opt:ref $wcelflag";				    }				else	# Win32				    {				    $base_cflags=' /W3 /WX /Gs0 /GF /Gy /nologo -DOPENSSL_SYSNAME_WIN32 -DWIN32_LEAN_AND_MEAN -DL_ENDIAN -DDSO_WIN32';				    $base_cflags.=' -D_CRT_SECURE_NO_DEPRECATE';	# shut up VC8				    $opt_cflags=' /MD /Ox /O2 /Ob2';				    $dbg_cflags=' /MDd /Od -DDEBUG -D_DEBUG';				    $lflags="/nologo /subsystem:console /machine:I386 /opt:ref";				    }				$mlflags='';								$out_def="out32"; $out_def.='_$(TARGETCPU)' if ($FLAVOR =~ /CE/);				$tmp_def="tmp32"; $tmp_def.='_$(TARGETCPU)' if ($FLAVOR =~ /CE/);				$inc_def="inc32";								if ($debug)					{					$cflags=$dbg_cflags.$base_cflags;					$lflags.=" /debug";					$mlflags.=' /debug';					}				else					{					$cflags=$opt_cflags.$base_cflags;					}								$obj='.obj';				$ofile="/Fo";								# EXE linking stuff				$link="link";				$rsc="rc";				$efile="/out:";				$exep='.exe';				if ($no_sock)		{ $ex_libs=''; }				elsif ($FLAVOR =~ /CE/)	{ $ex_libs='winsock.lib'; }				else			{ $ex_libs='wsock32.lib'; }								if ($FLAVOR =~ /CE/)					{					$ex_libs.=' $(WCECOMPAT)/lib/wcecompatex.lib';					$ex_libs.=' /nodefaultlib:oldnames.lib coredll.lib corelibc.lib' if ($ENV{'TARGETCPU'} eq "X86");					}				else					{					$ex_libs.=' gdi32.lib advapi32.lib user32.lib';					$ex_libs.=' bufferoverflowu.lib' if ($FLAVOR =~ /WIN64/);					}								# As native NT API is pure UNICODE, our WIN-NT build defaults to UNICODE,				# but gets linked with unicows.lib to ensure backward compatibility.				if ($FLAVOR =~ /NT/)					{					$cflags.=" -DOPENSSL_SYSNAME_WINNT -DUNICODE -D_UNICODE";					$ex_libs="unicows.lib $ex_libs";					}								# static library stuff				$mklib='lib';				$ranlib='';				$plib="";				$libp=".lib";				$shlibp=($shlib)?".dll":".lib";				$lfile='/out:';								$shlib_ex_obj="";				$app_ex_obj="setargv.obj" if ($FLAVOR !~ /CE/);				if ($nasm) {					$asm='nasmw -f win32';					$afile='-o ';				} else {					$asm='ml /Cp /coff /c /Cx';					$asm.=" /Zi" if $debug;					$afile='/Fo';				}								$bn_asm_obj='';				$bn_asm_src='';				$des_enc_obj='';				$des_enc_src='';				$bf_enc_obj='';				$bf_enc_src='';								if (!$no_asm)					{					$bn_asm_obj='crypto\bn\asm\bn_win32.obj';					$bn_asm_src='crypto\bn\asm\bn_win32.asm';					$des_enc_obj='crypto\des\asm\d_win32.obj crypto\des\asm\y_win32.obj';					$des_enc_src='crypto\des\asm\d_win32.asm crypto\des\asm\y_win32.asm';					$bf_enc_obj='crypto\bf\asm\b_win32.obj';					$bf_enc_src='crypto\bf\asm\b_win32.asm';					$cast_enc_obj='crypto\cast\asm\c_win32.obj';					$cast_enc_src='crypto\cast\asm\c_win32.asm';					$rc4_enc_obj='crypto\rc4\asm\r4_win32.obj';					$rc4_enc_src='crypto\rc4\asm\r4_win32.asm';					$rc5_enc_obj='crypto\rc5\asm\r5_win32.obj';					$rc5_enc_src='crypto\rc5\asm\r5_win32.asm';					$md5_asm_obj='crypto\md5\asm\m5_win32.obj';					$md5_asm_src='crypto\md5\asm\m5_win32.asm';					$sha1_asm_obj='crypto\sha\asm\s1_win32.obj';					$sha1_asm_src='crypto\sha\asm\s1_win32.asm';					$rmd160_asm_obj='crypto\ripemd\asm\rm_win32.obj';					$rmd160_asm_src='crypto\ripemd\asm\rm_win32.asm';					$cflags.=" -DBN_ASM -DMD5_ASM -DSHA1_ASM -DRMD160_ASM";					}								if ($shlib && $FLAVOR !~ /CE/)					{					$mlflags.=" $lflags /dll";				#	$cflags =~ s| /MD| /MT|;					$lib_cflag=" -D_WINDLL";					$out_def="out32dll";					$tmp_def="tmp32dll";					#					# Engage Applink...					#					$app_ex_obj.=" \$(OBJ_D)\\applink.obj /implib:\$(TMP_D)\\junk.lib";					$cflags.=" -DOPENSSL_USE_APPLINK -I.";					# I'm open for better suggestions than overriding $banner...					$banner=					@echo Building OpenSSL								$(OBJ_D)\applink.obj:	ms\applink.c					$(CC) /Fo$(OBJ_D)\applink.obj $(APP_CFLAGS) -c ms\applink.c				$(OBJ_D)\uplink.obj:	ms\uplink.c ms\applink.c					$(CC) /Fo$(OBJ_D)\uplink.obj $(SHLIB_CFLAGS) -c ms\uplink.c				$(INCO_D)\applink.c:	ms\applink.c					$(CP) ms\applink.c $(INCO_D)\applink.c								EXHEADER= $(EXHEADER) $(INCO_D)\applink.c								LIBS_DEP=$(LIBS_DEP) $(OBJ_D)\applink.obj				CRYPTOOBJ=$(OBJ_D)\uplink.obj $(CRYPTOOBJ)				___					$banner.=				CRYPTOOBJ=ms\uptable.obj $(CRYPTOOBJ)				___					}				elsif ($shlib && $FLAVOR =~ /CE/)					{					$mlflags.=" $lflags /dll";					$lib_cflag=" -D_WINDLL -D_DLL";					$out_def='out32dll_$(TARGETCPU)';					$tmp_def='tmp32dll_$(TARGETCPU)';					}								$cflags.=" /Fd$out_def";								sub do_lib_rule					{					local($objs,$target,$name,$shlib)=@_;					local($ret,$Name);									$taget =~ s/\//$o/g if $o ne '/';					($Name=$name) =~ tr/a-z/A-Z/;								#	$target="\$(LIB_D)$o$target";					$ret.="$target: $objs\n";					if (!$shlib)						{				#		$ret.="\t\$(RM) \$(O_$Name)\n";						$ex =' ';						$ret.="\t\$(MKLIB) $lfile$target @						}					else						{						local($ex)=($target =~ /O_SSL/)?' $(L_CRYPTO)':'';						if ($FLAVOR =~ /CE/)							{							$ex.=' winsock.lib $(WCECOMPAT)/lib/wcecompatex.lib';							}						else							{							$ex.=' unicows.lib' if ($FLAVOR =~ /NT/);							$ex.=' wsock32.lib gdi32.lib advapi32.lib user32.lib';							$ex.=' bufferoverflowu.lib' if ($FLAVOR =~ /WIN64/);							}						$ret.="\t\$(LINK) \$(MLFLAGS) $efile$target /def:ms/${Name}.def @						}					$ret.="\n";					return($ret);					}								sub do_link_rule					{					local($target,$files,$dep_libs,$libs)=@_;					local($ret,$_);										$file =~ s/\//$o/g if $o ne '/';					$n=&bname($targer);					$ret.="$target: $files $dep_libs\n";					$ret.="  \$(LINK) \$(LFLAGS) $efile$target @					$ret.="  \$(APP_EX_OBJ) $files $libs\n					return($ret);					}								1;