Checking if your kit is complete... Looks good Writing cdecl.h Testing how to compile and run a program... cl -nologo -GF -W3 -MD -Zi -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DUSE_SITECUSTOMIZE -DPRIVLIB_LAST_IN_INC -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFIX -DNARF -IC:\cpanrun\build\5-10-0\lib\CORE testtest.c -o testtest.exe testtest.c testtest.exe Testing how to pass args to a function... cl -nologo -GF -W3 -MD -Zi -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DUSE_SITECUSTOMIZE -DPRIVLIB_LAST_IN_INC -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFIX -DINCLUDE_ALLOCA -IC:\cpanrun\build\5-10-0\lib\CORE testcall.c -o testcall.exe testcall.c testcall.c(17) : fatal error C1083: Cannot open include file: 'alloca.h': No such file or directory cl -nologo -GF -W3 -MD -Zi -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DUSE_SITECUSTOMIZE -DPRIVLIB_LAST_IN_INC -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFIX -IC:\cpanrun\build\5-10-0\lib\CORE testcall.c -o testcall.exe testcall.c testcall.c(88) : warning C4013: 'alloca' undefined; assuming extern returning int testcall.obj : error LNK2001: unresolved external symbol _alloca testcall.exe : fatal error LNK1120: 1 unresolved externals cl -nologo -GF -W3 -MD -Zi -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DUSE_SITECUSTOMIZE -DPRIVLIB_LAST_IN_INC -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFIX -DINCLUDE_MALLOC -IC:\cpanrun\build\5-10-0\lib\CORE testcall.c -o testcall.exe testcall.c testcall.exe Succeeded. Using calling convention(s): cdecl Default calling convention: cdecl Maximum number of callbacks: 4 Writing conv.xsi Writing cbfunc.c Writing Makefile for C::DynaLib Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cp DynaLib.pm blib\lib\C\DynaLib.pm cp lib/C/DynaLib/Struct.pm blib\lib\C\DynaLib\Struct.pm cp lib/C/DynaLib/Makefile.PL blib\lib\C\DynaLib\Makefile.PL C:\cpanrun\build\5-10-0\bin\perl.exe C:\cpanrun\build\5-10-0\lib\ExtUtils\xsubpp -typemap C:\cpanrun\build\5-10-0\lib\ExtUtils\typemap DynaLib.xs > DynaLib.xsc && C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e mv DynaLib.xsc DynaLib.c cl -c -I. -nologo -GF -W3 -MD -Zi -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DUSE_SITECUSTOMIZE -DPRIVLIB_LAST_IN_INC -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFIX /Od -DVERSION=\"0.56\" -DXS_VERSION=\"0.56\" "-IC:\cpanrun\build\5-10-0\lib\CORE" -DDYNALIB_DEFAULT_CONV=\"cdecl\" -DDYNALIB_NUM_CALLBACKS=4 -DDYNALIB_USE_cdecl DynaLib.c Command line warning D4025 : overriding '/O1' with '/Od' DynaLib.c C:\PROGRA~1\MICROS~3\VC98\INCLUDE\malloc.h(109) : error C2059: syntax error : '(' C:\PROGRA~1\MICROS~3\VC98\INCLUDE\malloc.h(110) : error C2059: syntax error : '(' C:\PROGRA~1\MICROS~3\VC98\INCLUDE\malloc.h(111) : error C2059: syntax error : '(' NMAKE : fatal error U1077: 'cl' : return code '0x2' Stop.