Re: List of FTBFS in Ubuntu

[Russ Allbery <rra@debian.org>]

Stefano Rivera <stefano@rivera.za.net> writes:

> gcc argument order:
> g++ -o conftest -pthread -g -O2 -Wall -O2 -DNDEBUG -pthread -g -O2 -g -Wall -O2 -O2 -DNDEBUG    -L/usr/lib -llog4cpp -lnsl -Wl,-Bsymbolic-functions conftest.cpp -lz   >&5
> /tmp/ccnWkLI6.o: In function `main':
> /tmp/buildd/opensaml2-2.3/conftest.cpp:35: undefined reference to `log4cpp::Category::getInstance(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /tmp/buildd/opensaml2-2.3/conftest.cpp:36: undefined reference to `log4cpp::eol(log4cpp::CategoryStream&)'
> /tmp/buildd/opensaml2-2.3/conftest.cpp:36: undefined reference to `log4cpp::CategoryStream::operator<<(log4cpp::CategoryStream& (*)(log4cpp::CategoryStream&))'
> /tmp/buildd/opensaml2-2.3/conftest.cpp:35: undefined reference to `log4cpp::CategoryStream::~CategoryStream()'
> /tmp/buildd/opensaml2-2.3/conftest.cpp:35: undefined reference to `log4cpp::CategoryStream::~CategoryStream()'
> collect2: ld returned 1 exit status

> This will work:
> g++ -o conftest -pthread -g -O2 -Wall -O2 -DNDEBUG -pthread -g -O2 -g -Wall -O2 -O2 -DNDEBUG conftest.cpp   -L/usr/lib -llog4cpp -lnsl -Wl,-Bsymbolic-functions -lz

> Looks like autoconf's fault.

Hm, yeah, the code in the package is just:

    AC_TRY_LINK(
            [#include <log4cpp/Category.hh>
#include <log4cpp/CategoryStream.hh>],
            [log4cpp::Category::getInstance("foo").errorStream() << log4cpp::eol],
            [AC_DEFINE(SHIBSP_LOG4CPP,1,[Define if log4cpp library is used.])],
            [AC_MSG_ERROR([unable to link with log4cpp, need version 1.0 or later])])

so I don't see anything obvious that I can do to fix this in the package.
Autoconf doesn't seem to like the way that Ubuntu is adding the additional
linker flag.

-- 
Russ Allbery (rra@debian.org)               <http://www.eyrie.org/~eagle/>