On Fri, 2007-08-17 at 13:17 +0200, [EMAIL PROTECTED] wrote: > I'm trying to compile pocketgpsmap using > mandriva-cegcc-mingw32ce-0.50.tar.gz . I got stuck in this: > > lib_z/gzio.o:gzio.c:(.text+0xf64): undefined reference to `_errno' > lib_z/gzio.o:gzio.c:(.text+0x1c60): undefined reference to `rewind' > lib_jpeg/jmemmgr.o:jmemmgr.c:(.text+0x1d68): undefined reference to `getenv' > collect2: ld returned 1 exit status > Where is library which defines these funcions. Checking > /opt/mingw32ce/arm-wince-mingw32ce/lib/*.a with nm > gave no results.
Windows CE doesn't support some of the unix-like API's you are referring
to. That's because the library in lib_z was not written for CE. I've
tried compiling pocketgpsmap myself, and did the trivial changes to work
around these problems, like
#ifdef _WIN32_WCE
SetLastError(0);
#else
errno = 0;
#endif
or
#ifdef _WIN32_WCE
m = (char *)(*errnum == Z_ERRNO ? "no errno on WinCE" :
s->stream.msg);
#else
m = (char*)(*errnum == Z_ERRNO ? zstrerror(errno) : s->stream.msg);
#endif
Also the linux documentation for rewind says
The rewind() function sets the file position indicator for the
stream pointed to by stream to the beginning of the file. It
is equivalent to:
(void)fseek(stream, 0L, SEEK_SET)
Doing a trivial change got around that too.
I didn't see the getenv message, we may be using different versions of
the pocketgpsmap source. I got it from svn, revision 52.
Our arm-wince-cegcc toolset would normally work to get around these
things, but it doesn't appear to like the C++ I'm feeding it. Don't feel
like looking into this now.
Danny
--
Danny Backx ; danny.backx - at - scarlet.be ; http://danny.backx.info
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