-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I'm compiling a DLL (say foo.dll) on Windows/mingw32 that links to the ltdl-DLL as well. To get automake-1.9.6 and libtool-1.5.22 to create my foo.dll as DLL, I specify the LDFLAGS="-no-undefined". One of the things that will happen because of this is that libtool adds -DDLL_EXPORT to the compiler command line. But because I use the libtool dll, I also need to define LIBLTDL_DLL_IMPORT as otherwise I don't import libtool's function and variables properly and get a bunch of linker errors.
Here's the deal: If I have both DLL_EXPORT and LIBLTDL_DLL_IMPORT defined when including <ltdl.h>, I get In file included from foo.c:1: /usr/local/mingw/include/ltdl.h:134: warning: `LT_SCOPE' redefined /usr/local/mingw/include/ltdl.h:131: warning: this is the location of the previous definition This will stop every build that wants to compile with -Werror enabled. And for my DLL, there is absolutely no way around it to avoid this warning. What is your proposed way to avoid this warning? The documentation doesn't say anything about DLL_EXPORT or LT_SCOPE or LTDL_DLL_IMPORT. Funny enough this has already been discussed in 2001 [1] but the problem with the created warning still persists in libtool-1.5.22 and obviously even in the most recent CVS version [2]. As for an actual resolution, I can imagine several of them and none of them is particularly difficult. IMHO it's just a matter of properly distinguishing whether the dllexport/import are used when compiling libtool itself, compared to compiling some external application/software. Is everyone simply ignoring the warning and effectively never compiling with -Werror? Christian Stimming (by way of the GnuCash porting to Windows) [1] http://lists.gnu.org/archive/html/libtool/2001-12/msg00040.html [2] http://cvs.savannah.gnu.org/viewcvs/libtool/libltdl/libltdl/lt_system.h?rev=1.2&root=libtool&view=auto -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.1 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iQCVAwUBRPQWXmXAi+BfhivFAQL9OAQApdM9DeVi9iUz+QKjq0BmTl9mU1vX0rh2 Jp8HN4o15s786kiLHZ4Jd1FgBo8x9Pkrxmm3NHwiih23uEetO1foNP/REW6cZAvo ylExzrrh3FwwNKNgF3vpix91x0ADza/fqZkYWrWAR4eL5rL0Vfqz7UHtgqG5Lc1L DQQ8vVGeaaU= =Ad11 -----END PGP SIGNATURE----- _______________________________________________ http://lists.gnu.org/mailman/listinfo/libtool
