Re: Duplicate symbols due to <emacs dir>/src/termcap.c

[ken <gebser@mousecar.com>]

On 01/03/2018 05:39 PM, Jeffrey Walton wrote:
> I'm building Emacs from sources. Termcap, Ncurses, GetText and friends
> are already installed.
>
> As the build finishes I see:
>
>      ...
>      /usr/local/lib64/libtermcap.a(tparam.o): In function `tparam':
>      /home/scripts/termcap-1.3.1/tparam.c:101: multiple definition of `tparam'
>      terminfo.o:terminfo.c:(.text+0x0): first defined here
>      terminfo.o: In function `tparam':
>      terminfo.c:(.text+0x4a): undefined reference to `tparm'
>      collect2: error: ld returned 1 exit status
>
> It looks like it is due to a local copy of termcap.c:
>
>      $ find . -name termcap.c
>      ./emacs-24.5/src/termcap.c
>
> How do I tell Emacs to avoid its copy of Termcap, and use the one
> already built and installed
>
> ******************************
>
> Here is how Emacs was configured:
>
>     PKG_CONFIG_PATH="${BUILD_PKGCONFIG[*]}" \
>     CPPFLAGS="${BUILD_CPPFLAGS[*]}" \
>     CFLAGS="${BUILD_CFLAGS[*]}" CXXFLAGS="${BUILD_CXXFLAGS[*]}" \
>     LDFLAGS="${BUILD_LDFLAGS[*]}" LIBS="${BUILD_LIBS[*]}" \
> ./configure --prefix="$INSTALL_PREFIX" --libdir="$INSTALL_LIBDIR" \
>     --with-xml2 --without-x --without-sound --without-xpm \
>     --without-jpeg --without-tiff --without-gif --without-png --without-rsvg \
>     --without-imagemagick --without-xft --without-libotf --without-m17n-flt \
>     --without-xaw3d --without-toolkit-scroll-bars --without-gpm --without-dbus \
>     --without-gconf --without-gsettings --without-makeinfo \
>     --without-compress-install
>
> And here are the variables it was asked to use:
>
>   INSTALL_PREFIX: /usr/local
>   INSTALL_LIBDIR: /usr/local/lib64
>
>        PKGCONFIG: /usr/local/lib64/pkgconfig
>         CPPFLAGS: -I/usr/local/include -DNDEBUG
>           CFLAGS: -m64 -march=native -fPIC
>         CXXFLAGS: -m64 -march=native -fPIC
>          LDFLAGS: -L/usr/local/lib64 -m64 -Wl,-R,/usr/local/lib64
> -Wl,--enable-new-dtags
>           LDLIBS: -ldl -lpthread
>
> ******************************
>
> gcc -Demacs  -I. -I. -I../lib -I./../lib -MMD -MF deps/.d -MP -m64
> -march=native -fPIC  -Wl,-znocombreloc  -L/usr/local/lib64 -m64
> -Wl,-R,/usr/local/lib64 -Wl,--enable-new-dtags \
>    -o temacs  vm-limit.o dispnew.o frame.o scroll.o xdisp.o menu.o
> window.o charset.o coding.o category.o ccl.o character.o chartab.o
> bidi.o cm.o term.o terminal.o xfaces.o    emacs.o keyboard.o macros.o
> keymap.o sysdep.o buffer.o filelock.o insdel.o marker.o minibuf.o
> fileio.o dired.o cmds.o casetab.o casefiddle.o indent.o search.o
> regex.o undo.o alloc.o data.o doc.o editfns.o callint.o eval.o
> floatfns.o fns.o font.o print.o lread.o syntax.o unexelf.o bytecode.o
> process.o gnutls.o callproc.o region-cache.o sound.o atimer.o doprnt.o
> intervals.o textprop.o composite.o xml.o inotify.o profiler.o
> decompress.o          terminfo.o lastfile.o gmalloc.o ralloc.o
> ../lib/libgnu.a                -lrt          -ltermcap
> -lpthread   -lm -lz
> /usr/local/lib64/libtermcap.a(tparam.o): In function `tparam':
> /home/scripts/termcap-1.3.1/tparam.c:101: multiple definition of `tparam'
> terminfo.o:terminfo.c:(.text+0x0): first defined here
> terminfo.o: In function `tparam':
> terminfo.c:(.text+0x4a): undefined reference to `tparm'
> collect2: error: ld returned 1 exit status
> gmake[1]: *** [Makefile:664: temacs] Error 1
> gmake[1]: Leaving directory '/home/scripts/emacs-24.5/src'
> gmake: *** [Makefile:387: src] Error 2
>
This hasn't been my wheelhouse for a long time, but it used to be that a 
make (now gmake) would resolve such a conflict by using the most recent 
file... so here doing a "touch termcap.c" on your preferred version 
would be a fix.

But that fix would actually depend upon the contents of your Makefile.  
So if the above doesn't work (and absent documentation telling you), 
look into that Makefile to see if its code specify more recent files 
gain priority or, alternatively, if some particular directory or 
directory tree endows preference when there are duplicate files.

But before all that, I think what I would do would be "gcc [relevant 
flags] /home/scripts/termcap-1.3.1/tparam.c" just to check if that by 
itself compiles properly.

Happy hacking!