newlib 1.12.0 compiled under different cygwin versions
Craig Edwards
craig@haenterprises.com.au
Mon Dec 13 20:20:00 GMT 2004
When mallocr.c gets compiled using the current cygwin devel base (gcc
3.3.3), the following symbols are undefined (presumably linked in from a
Win32 DLL):
U __imp__LocalAlloc@8
U __imp__LocalFree@4
U __imp__VirtualAlloc@16
U __imp__VirtualFree@12
U __imp__VirtualQuery@12
However, in a slightly older cygwin (using gcc 3.3.1), the undefined
symbols are:
U _LocalAlloc@8
U _LocalFree@4
U _VirtualAlloc@16
U _VirtualFree@12
U _VirtualQuery@12
Now, these functions are declared in winbase.h (included indirectly by
mallocr.c) as follows:
#ifndef WINBASEAPI
#ifdef __INSIDE_CYGWIN__
#define WINBASEAPI
#else
#define WINBASEAPI DECLSPEC_IMPORT
#endif
WINBASEAPI PVOID WINAPI VirtualAlloc(PVOID,DWORD,DWORD,DWORD);
...
I can see that currently it thinks these functions are to be imported from
a DLL, but why did it used to behave differently? The reason I care is
that my XBOX port of newlib provides its own implementation of those
functions that get *statically* linked in to libc.a (which used to work
just fine until I upgraded to a later version of cygwin). Does anyone
have any theories?
Many thanks.
--
Craig Edwards
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