Hi David, On Tue, Nov 29, 2005 at 08:31:20AM -0500, David Roundy wrote: > On Mon, Nov 28, 2005 at 11:55:46PM -0800, Steve Langasek wrote: > > Yes, curl-config is messed up in the sense that curl-config is *always* > > messed up for purposes of dynamic linking on GNU systems. In the present > > case, curl-config spits out -lkrb5 and other library options, but is > > missing a dependency on libkrb5-dev. This is bug #340784, and should be > > fixed reasonably soon.
> > On the darcs side, this is fixable by changing the Debian package to not > > use curl-config -- as described at > > <http://lists.debian.org/debian-devel-announce/2005/11/msg00016.html>. > > It's understandable that upstream would not want to accept such a patch, > > since it's not portable to platforms which use non-GNU linkers; but for > > Debian's purposes, until curl-config adds a --static option to split > > these other garbage linker options out, it's far better to replace > > `curl-config --libs` with -lcurl as this is much less likely to lead to > > future build failures as a result of curl bugs. > Is there some sort of autoconf trickery we could use upstream to check if > the gnu linker is present and fall back on curl-config if it isn't? Hmm, interesting question. Following the autoconf principle of "test for features, not for platforms", I would probably do something like this: AC_DEFUN([CHECK_SHARED_LIBS],[ AC_LANG_PUSH([C]) AC_LANG_CONFTEST([ int liba_dosomething() { return 0; } ]) if $CC -shared -o libconftest-a.so conftest.$ac_ext then [AC_LANG_CONFTEST([ extern int liba_dosomething(); int libb_dosomething() { return liba_dosomething(); } ]) if $CC -shared -o libconftest-b.so conftest.$ac_ext -L. -lconftest-a then save_LDFLAGS="$LDFLAGS" LDFLAGS="$LDFLAGS -L." save_LIBS="$LIBS" LIBS="-lconftest-b" AC_LINK_IFELSE([ AC_LANG_PROGRAM([extern int libb_dosomething();], [return libb_dosomething();]) ],[ac_gnu_style_elf=yes],[ac_gnu_style_elf=no]) LIBS="$save_LIBS" LDFLAGS="$save_LDFLAGS" else ac_gnu_style_elf=no fi else ac_gnu_style_elf=no fi rm conftest* libconftest* AC_LANG_POP ]) And then you could add CHECK_SHARED_LIBS to configure.in and check the value of $ac_gnu_style_elf afterwards; but there are some problems with this approach, such as losing any -L options provided by curl-config. If I were you, I would just put pressure on curl upstream to split the curl-config output between --libs and --libs --static, so you can make it their problem to sort out what the correct flags are for a given platform. :) Cheers, -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. [EMAIL PROTECTED] http://www.debian.org/
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