Den 2009-03-12 18:01 skrev Dave Korn:
Dave Korn wrote:
Why is a -D for _DLL present? That is a reserved definition in the
implementation's namespace,
Hmmm, I may have misunderstood that. Does -D_DLL mean something special to
MSVC, does anyone know?
When you compile with shared libc on MSVC (e.g. -MD), it defines _DLL for you.
$ cat << EOF > dll.c
#ifdef _DLL
choke me
#endif
int foo;
EOF
$ cl -MD -c dll.c
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14.00.50727.762 for 80x86
Copyright (C) Microsoft Corporation. All rights reserved.
dll.c
dll.c(2) : error C2061: syntax error : identifier 'me'
dll.c(2) : error C2059: syntax error : ';'
$ cl -c dll.c
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14.00.50727.762 for 80x86
Copyright (C) Microsoft Corporation. All rights reserved.
dll.c
$
Cheers,
Peter
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