Earnie Boyd <[EMAIL PROTECTED]> writes:
> > On a related note, I have been having to add a "main" function to the
> > DLL's like so:
> >
> > #if defined(__MINGW32__) && defined(DLL_EXPORT)
> > int
> > main(int argc, char* argv[])
> > {
> > return 0;
> > }
> > #endif
> >
>
> You shouldn't do this. I posted on the libtool list a
> mingwlibsample.tar.gz under the heading of "Simple dll and static
> library creation for MinGW" dated 9/19/2002.
<http://www.soggytrousers.net/repository/mingwlibsample.tar.gz>
> > If I do not add this, it does not build the DLL. I'm concerned about
> > the export of this function, however - if more than one DLL uses this
> > method, could there be some kind of conflict and/or is there a better
> > way to deal with this?
> >
>
> The -shared switch is required to build the dll.
If anyone is interested in this, libtool made the dll fine without the
main function mentioned above by adding -shared after the $CC:
--BEGIN--
# Commands used to build and install a shared archive.
archive_cmds=""
archive_expsym_cmds="if test \\\"x\\\`sed 1q \$export_symbols\\\`\\\" = xEXPORTS; then
cp \$export_symbols \$output_objdir/\$soname-def;
else
echo EXPORTS > \$output_objdir/\$soname-def;
_lt_hint=1;
cat \$export_symbols | while read symbol; do
set dummy \\\$symbol;
case \\\$# in
2) echo \\\" \\\$2 @ \\\$_lt_hint ; \\\" >>
\$output_objdir/\$soname-def;;
4) echo \\\" \\\$2 \\\$3 \\\$4 ; \\\" >> \$output_objdir/\$soname-def;
_lt_hint=\\\`expr \\\$_lt_hint - 1\\\`;;
*) echo \\\" \\\$2 @ \\\$_lt_hint \\\$3 ; \\\" >>
\$output_objdir/\$soname-def;;
esac;
_lt_hint=\\\`expr 1 + \\\$_lt_hint\\\`;
done;
fi~
\$CC -shared -Wl,--base-file,\$output_objdir/\$soname-base
-Wl,-e,_DllMainCRTStartup@12 -o \$output_objdir/\$soname \$libobjs \$deplibs
\$compiler_flags~
\$DLLTOOL --as=\$AS --dllname \$soname --exclude-symbols
DllMain@12,_cygwin_dll_entry@12,_cygwin_noncygwin_dll_entry@12,DllMainCRTStartup@12,DllEntryPoint@12
--def \$output_objdir/\$soname-def --base-file \$output_objdir/\$soname-base
--output-exp \$output_objdir/\$soname-exp~
\$CC -shared -Wl,--base-file,\$output_objdir/\$soname-base
\$output_objdir/\$soname-exp -Wl,-e,_DllMainCRTStartup@12 -o \$output_objdir/\$soname
\$libobjs \$deplibs \$compiler_flags~
\$DLLTOOL --as=\$AS --dllname \$soname --exclude-symbols
DllMain@12,_cygwin_dll_entry@12,_cygwin_noncygwin_dll_entry@12,DllMainCRTStartup@12,DllEntryPoint@12
--def \$output_objdir/\$soname-def --base-file \$output_objdir/\$soname-base
--output-exp \$output_objdir/\$soname-exp --output-lib \$output_objdir/\$libname.dll.a~
\$CC -shared \$output_objdir/\$soname-exp -Wl,-e,_DllMainCRTStartup@12 -o
\$output_objdir/\$soname \$libobjs \$deplibs \$compiler_flags"
postinstall_cmds=""
postuninstall_cmds=""
--END--
Note the addition of "-shared" after the \$CC. Similar lines may be
found in libtool.m4 v. 1.264 at 4700, 4702 and 4704.
Elizabeth
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