Bruno Haible <br...@clisp.org> writes: >> Recently gnulib added some self-tests written in C++ for otherwise >> C-only modules. When imported into libidn (otherwise a strictly C >> library), this leads to an error message: >> >> /bin/bash ../libtool --preserve-dup-deps --mode=link g++ -o >> test-fcntl-h-c++ test-fcntl-h-c++.o libtests.a ../gl/libgnu.la libtests.a >> libtool: link: unable to infer tagged configuration >> libtool: link: specify a tag with `--tag' >> make[4]: *** [test-fcntl-h-c++] Error 1 >> make[4]: Leaving directory `/home/jas/src/libidn/gltests' > > Hmm. When I do > $ ./gnulib-tool --create-testdir --dir=/tmp/testdir --with-tests --libtool > fcntl-h > and configure and build that testdir, everything works fine, including these > commands:
That works fine for me as well. > This is for both --disable-shared and --enable-shared, with or without > --preserve-dup-deps. So I guess you have an older version of libtool? > The version that works for me is 2.2.6. No, I have version '2.2.6b' from debian. I noticed one thing: if I add AC_PROG_CXX to libidn/configure.ac everything works. So I believe this is a bug in gnulib, it is adding C++ files to my project so it should make sure that a C++ compiler is available. I see the ansi-c++-opt module, maybe it is missing some libtool magic? /Simon
