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Re: Problems linking program
At 03:40 PM 4/22/2002, Charles Wilson wrote:
>Larry Hall (RFK Partners, Inc) wrote:
>>> ld -shared -o libgd.so.2.0.0 gd.o gd_gd.o gd_gd2.o gd_io.o gd_io_dp.o
>>>gd_io_file.o gd_ss.o gd_io_ss.o gd_png.o gd_jpeg.o gdxpm.o gdfontt.o gdfonts.o
>>>gdfontmb.o gdfontl.o gdfontg.o gdtables.o gdft.o gdcache.o gdkanji.o wbmp.o
>>>gd_wbmp.o gdhelpers.o gd_topal.o -lfreetype -lgd -lz -ljpeg -lpng -lcygwin
>>>/usr/lib/libcygwin.a(_cygwin_crt0_common.o)(.text+0xe6): undefined reference to
>>OK. First, you shouldn't need to list -lcygwin. It gets added automatically.
>>Fortunately now, it should be harmless to list it however. That hasn't always
>>been the case so it's good not to get in the habit of adding it when it's not
>>'GetModuleHandle()' is a Win32 API. You apparently have not installed the w32api package. Rerun setup and do so.
>Nope -- the problem is he's using 'ld' directly to link the DLL. Don't do that. Instead of 'ld -shared', use 'gcc -shared'. If you MUST pass linker specific options to ld, use '-Wl,--my-ld-option' in your gcc command line.
Ouch! Chuck's right with this one. I didn't pay attention to the link
line, just the error. Using 'ld' directly will not automatically pick
up the w32api libraries, even if they are installed. Use 'gcc' as Chuck
>(BTW, naming your dll "foo.so.2.0.0" is a really bad idea. Windows only supports shared libs that end in ".dll".)
Yeah, it still looks to me like Matt is trying to build the GNU C library
for some reason. If it's to use with Cygwin, linking and correct naming
conventions for Windows will be the least of his problems! ;-)
Larry Hall firstname.lastname@example.org
RFK Partners, Inc. http://www.rfk.com
838 Washington Street (508) 893-9779 - RFK Office
Holliston, MA 01746 (508) 893-9889 - FAX
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