On Dec 16, 2007, at 10:21 PM, Zhongxing Xu wrote:
> The following code fails compile.
>
> #include <stddef.h>
>
> void foo()
> {
> int *p = NULL;
> }
>
> $ clang -fsyntax-only 1.c
> 1.c:1:10: error: 'stddef.h' file not found
> #include <stddef.h >
> ^
> 1.c:5:12: error: use of undeclared identifier 'NULL'
> int *p = NULL;
> ^
> 2 diagnostics generated.
>
> clang should provide its own stddef.h as gcc does. Where should this
> header go in the directory?
clang currently uses the GCC versions of these files. I'd wager that
'clang -v 1.c' does not list the gcc include directory. To handle
this, you have to hack the clang driver to know where to look
currently. Search for "FIXME: temporary hack: hard-coded paths" on
this page:
http://clang.llvm.org/get_started.html
-Chris
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