From: khan@xraylith.wisc.edu (Mumit Khan) Subject: Re: [egon.schaal@cad-consulting.wn.eunet.de: gnuwin32, ld] 20 Jul 1997 16:01:55 -0700 Approved: cygnus.gnu-win32@cygnus.com Distribution: cygnus Message-ID: <9707202134.AA07052.cygnus.gnu-win32@modi.xraylith.wisc.edu> Original-To: Ian Lance Taylor , gnu-win32@cygnus.com In-Reply-To: Your message of "Sun, 20 Jul 1997 10:37:21 PDT." <199707201737.KAA03678@rtl.cygnus.com> Original-Sender: owner-gnu-win32@cygnus.com Ian Lance Taylor writes: > What's the magic option or code to use to avoid this problem? > > Ian [ multiple defs of STL allocator fns problem with gnu-win32 gcc ] This problem arises when you let gcc instantiate everything statically in your program units (ie., -fimplicit-templates). This is usually a bad thing anyway for anything other than tiny toy programs, since the code bloat is unacceptable in any real software. Two ways to avoid it: 1. Use -fno-implict-templates (explicit instantiation). Currently with gcc (IMO) this is the only viable and portable option. 2. Use -frepo. For some reason, gcc on '95 doesn't do this correctly (collect2/ld doesn't invoke recompilations based on the *.rpo files). I use linux to build win32 apps, and it works find with my x-build environment. Both are documentated (along with the gotchas) in my STL newbie guide (URL after sig). It's quite dated, but gcc related info is quite relevant. Mumit http://www.xraylith.wisc.edu/~khan/ http://www.xraylith.wisc.edu/~khan/software/stl/STL.newbie.html - For help on using this list (especially unsubscribing), send a message to "gnu-win32-request@cygnus.com" with one line of text: "help".