[Bug ld/17952] New: confusing undefined reference error message when mixing DSO and .a (and .o?)

[ossman at cendio dot se]

https://sourceware.org/bugzilla/show_bug.cgi?id=17952

            Bug ID: 17952
           Summary: confusing undefined reference error message when
                    mixing DSO and .a (and .o?)
           Product: binutils
           Version: 2.25
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: ossman at cendio dot se

Under some circumstances ld can complain that I haven't fulfilled the
dependencies of a DSO given on the command line. This is of course absolute
nonsense as I should only provide dependencies for my object files, not any
DSOs I happen to use.

The complaint is half right though as one of my object files actually needs
this library. ld is just not telling me this. This is my link attempt:

> /local/home/ossman/devel/tigervnc/builddir/solsparc/vncviewer
> address@hidden cbrun solsparc /usr/bin/sparc-sun-solaris2.10-c++  -v  -pg -g  
>  -nodefaultlibs -Wl,--no-copy-dt-needed-entries 
> CMakeFiles/vncviewer.dir/menukey.cxx.o CMakeFiles/vncviewer.dir/CConn.cxx.o 
> CMakeFiles/vncviewer.dir/DesktopWindow.cxx.o 
> CMakeFiles/vncviewer.dir/FLTKPixelBuffer.cxx.o 
> CMakeFiles/vncviewer.dir/UserDialog.cxx.o 
> CMakeFiles/vncviewer.dir/ServerDialog.cxx.o 
> CMakeFiles/vncviewer.dir/OptionsDialog.cxx.o 
> CMakeFiles/vncviewer.dir/PlatformPixelBuffer.cxx.o 
> CMakeFiles/vncviewer.dir/Viewport.cxx.o 
> CMakeFiles/vncviewer.dir/parameters.cxx.o 
> CMakeFiles/vncviewer.dir/keysym2ucs.c.o 
> CMakeFiles/vncviewer.dir/vncviewer.cxx.o 
> CMakeFiles/vncviewer.dir/X11PixelBuffer.cxx.o  -o vncviewer  
> ../common/rfb/librfb.a ../common/network/libnetwork.a ../common/rdr/librdr.a 
> ../common/os/libos.a ../common/Xregion/libXregion.a -Wl,-Bstatic 
> -lfltk_images -lpng -ljpeg -lfltk -Wl,-Bdynamic -lm -ldl -lXcursor 
> /usr/sparc-sun-solaris2.10/sys-root/usr/sfw/lib/libXfixes.so -Wl,-Bstatic 
> -lXft -Wl,-Bdynamic -lfontconfig -lXext -R/usr/sfw/lib -lX11 -lz -Wl,-Bstatic 
> -ljpeg -Wl,-Bdynamic -lpam -Wl,-Bstatic -lgnutls -ltasn1 -lnettle -lhogweed 
> -lgmp -Wl,-Bdynamic -lrt -lsocket 
> /usr/sparc-sun-solaris2.10/sys-root/usr/lib/libz.so  -Wl,-Bstatic -lstdc++ 
> -Wl,-Bdynamic -lgcc -lgcc_eh -lc
> Using built-in specs.
> COLLECT_GCC=/usr/bin/sparc-sun-solaris2.10-c++
> COLLECT_LTO_WRAPPER=/usr/libexec/gcc/sparc-sun-solaris2.10/4.6.4/lto-wrapper
> Target: sparc-sun-solaris2.10
> Configured with: ../configure --target=sparc-sun-solaris2.10 --prefix=/usr 
> --mandir=/usr/share/man --infodir=/usr/share/info 
> --with-sysroot=/usr/sparc-sun-solaris2.10/sys-root --with-system-zlib 
> --with-gnu-as --with-gnu-ld --disable-nls --disable-multilib 
> --disable-libquadmath --disable-libmudflap --disable-gnu-unique-object 
> --host=i686-pc-linux-gnu --enable-threads=posix --enable-languages=c,c++
> Thread model: posix
> gcc version 4.6.4 (GCC) 
> COMPILER_PATH=/usr/libexec/gcc/sparc-sun-solaris2.10/4.6.4/:/usr/libexec/gcc/sparc-sun-solaris2.10/4.6.4/:/usr/libexec/gcc/sparc-sun-solaris2.10/:/usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/:/usr/lib/gcc/sparc-sun-solaris2.10/:/usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/../../../../sparc-sun-solaris2.10/bin/
> LIBRARY_PATH=/usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/:/usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/../../../../sparc-sun-solaris2.10/lib/:/usr/sparc-sun-solaris2.10/sys-root/lib/:/usr/sparc-sun-solaris2.10/sys-root/usr/lib/
> COLLECT_GCC_OPTIONS='-v' '-pg' '-g' '-nodefaultlibs' '-o' 'vncviewer' '-R' 
> '/usr/sfw/lib' '-shared-libgcc' '-mcpu=v9'
>  /usr/libexec/gcc/sparc-sun-solaris2.10/4.6.4/collect2 
> --sysroot=/usr/sparc-sun-solaris2.10/sys-root -V -R /usr/sfw/lib -Y 
> P,/usr/sparc-sun-solaris2.10/sys-root/usr/ccs/lib/libp:/usr/sparc-sun-solaris2.10/sys-root/usr/lib/libp:/usr/sparc-sun-solaris2.10/sys-root/usr/ccs/lib:/usr/sparc-sun-solaris2.10/sys-root/usr/lib:/usr/sparc-sun-solaris2.10/sys-root/lib
>  -rpath-link /usr/sparc-sun-solaris2.10/sys-root/usr/lib -Qy -o vncviewer 
> /usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/gcrt1.o 
> /usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/gmon.o 
> /usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/crti.o 
> /usr/sparc-sun-solaris2.10/sys-root/usr/lib/values-Xa.o 
> /usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/crtbegin.o 
> -L/usr/lib/gcc/sparc-sun-solaris2.10/4.6.4 
> -L/usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/../../../../sparc-sun-solaris2.10/lib
>  -L/usr/sparc-sun-solaris2.10/sys-root/lib 
> -L/usr/sparc-sun-solaris2.10/sys-root/usr/lib --no-copy-dt-needed-entries 
> CMakeFiles/vncviewer.dir/menukey.cxx.o CMakeFiles/vncviewer.dir/CConn.cxx.o 
> CMakeFiles/vncviewer.dir/DesktopWindow.cxx.o 
> CMakeFiles/vncviewer.dir/FLTKPixelBuffer.cxx.o 
> CMakeFiles/vncviewer.dir/UserDialog.cxx.o 
> CMakeFiles/vncviewer.dir/ServerDialog.cxx.o 
> CMakeFiles/vncviewer.dir/OptionsDialog.cxx.o 
> CMakeFiles/vncviewer.dir/PlatformPixelBuffer.cxx.o 
> CMakeFiles/vncviewer.dir/Viewport.cxx.o 
> CMakeFiles/vncviewer.dir/parameters.cxx.o 
> CMakeFiles/vncviewer.dir/keysym2ucs.c.o 
> CMakeFiles/vncviewer.dir/vncviewer.cxx.o 
> CMakeFiles/vncviewer.dir/X11PixelBuffer.cxx.o ../common/rfb/librfb.a 
> ../common/network/libnetwork.a ../common/rdr/librdr.a ../common/os/libos.a 
> ../common/Xregion/libXregion.a -Bstatic -lfltk_images -lpng -ljpeg -lfltk 
> -Bdynamic -lm -ldl -lXcursor 
> /usr/sparc-sun-solaris2.10/sys-root/usr/sfw/lib/libXfixes.so -Bstatic -lXft 
> -Bdynamic -lfontconfig -lXext -lX11 -lz -Bstatic -ljpeg -Bdynamic -lpam 
> -Bstatic -lgnutls -ltasn1 -lnettle -lhogweed -lgmp -Bdynamic -lrt -lsocket 
> /usr/sparc-sun-solaris2.10/sys-root/usr/lib/libz.so -Bstatic -lstdc++ 
> -Bdynamic -lgcc -lgcc_eh -lc 
> /usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/crtend.o 
> /usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/crtn.o
> GNU ld (GNU Binutils) 2.25
>   Supported emulations:
>    elf32_sparc_sol2
>    elf32_sparc
>    elf64_sparc_sol2
>    elf64_sparc
> /usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/../../../../sparc-sun-solaris2.10/bin/ld:
>  /usr/sparc-sun-solaris2.10/sys-root/usr/lib/libXcursor.so: undefined 
> reference to symbol 'XRenderFindStandardFormat@@RENDER_0.5'
> /usr/sparc-sun-solaris2.10/sys-root/usr/openwin/sfw/lib/libXrender.so.1: 
> error adding symbols: DSO missing from command line
> collect2: ld returned 1 exit status

Absolutely confusing.

But if I shuffle things around a bit I get at the real reason that things are
failing:

> /local/home/ossman/devel/tigervnc/builddir/solsparc/vncviewer
> address@hidden cbrun solsparc /usr/bin/sparc-sun-solaris2.10-c++  -v  -pg -g  
>  -nodefaultlibs -Wl,--no-copy-dt-needed-entries 
> CMakeFiles/vncviewer.dir/menukey.cxx.o CMakeFiles/vncviewer.dir/CConn.cxx.o 
> CMakeFiles/vncviewer.dir/DesktopWindow.cxx.o 
> CMakeFiles/vncviewer.dir/FLTKPixelBuffer.cxx.o 
> CMakeFiles/vncviewer.dir/UserDialog.cxx.o 
> CMakeFiles/vncviewer.dir/ServerDialog.cxx.o 
> CMakeFiles/vncviewer.dir/OptionsDialog.cxx.o 
> CMakeFiles/vncviewer.dir/PlatformPixelBuffer.cxx.o 
> CMakeFiles/vncviewer.dir/Viewport.cxx.o 
> CMakeFiles/vncviewer.dir/parameters.cxx.o 
> CMakeFiles/vncviewer.dir/keysym2ucs.c.o 
> CMakeFiles/vncviewer.dir/vncviewer.cxx.o 
> CMakeFiles/vncviewer.dir/X11PixelBuffer.cxx.o  -o vncviewer  
> ../common/rfb/librfb.a ../common/network/libnetwork.a ../common/rdr/librdr.a 
> ../common/os/libos.a ../common/Xregion/libXregion.a -Wl,-Bstatic 
> -lfltk_images -lpng -ljpeg -lfltk -Wl,-Bdynamic -lm -ldl -Wl,-Bstatic -lXft 
> -Wl,-Bdynamic -lXcursor 
> /usr/sparc-sun-solaris2.10/sys-root/usr/sfw/lib/libXfixes.so  -lfontconfig 
> -lXext -R/usr/sfw/lib -lX11 -lz -Wl,-Bstatic -ljpeg -Wl,-Bdynamic -lpam 
> -Wl,-Bstatic -lgnutls -ltasn1 -lnettle -lhogweed -lgmp -Wl,-Bdynamic -lrt 
> -lsocket /usr/sparc-sun-solaris2.10/sys-root/usr/lib/libz.so  -Wl,-Bstatic 
> -lstdc++ -Wl,-Bdynamic -lgcc -lgcc_eh -lc
> Using built-in specs.
> COLLECT_GCC=/usr/bin/sparc-sun-solaris2.10-c++
> COLLECT_LTO_WRAPPER=/usr/libexec/gcc/sparc-sun-solaris2.10/4.6.4/lto-wrapper
> Target: sparc-sun-solaris2.10
> Configured with: ../configure --target=sparc-sun-solaris2.10 --prefix=/usr 
> --mandir=/usr/share/man --infodir=/usr/share/info 
> --with-sysroot=/usr/sparc-sun-solaris2.10/sys-root --with-system-zlib 
> --with-gnu-as --with-gnu-ld --disable-nls --disable-multilib 
> --disable-libquadmath --disable-libmudflap --disable-gnu-unique-object 
> --host=i686-pc-linux-gnu --enable-threads=posix --enable-languages=c,c++
> Thread model: posix
> gcc version 4.6.4 (GCC) 
> COMPILER_PATH=/usr/libexec/gcc/sparc-sun-solaris2.10/4.6.4/:/usr/libexec/gcc/sparc-sun-solaris2.10/4.6.4/:/usr/libexec/gcc/sparc-sun-solaris2.10/:/usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/:/usr/lib/gcc/sparc-sun-solaris2.10/:/usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/../../../../sparc-sun-solaris2.10/bin/
> LIBRARY_PATH=/usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/:/usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/../../../../sparc-sun-solaris2.10/lib/:/usr/sparc-sun-solaris2.10/sys-root/lib/:/usr/sparc-sun-solaris2.10/sys-root/usr/lib/
> COLLECT_GCC_OPTIONS='-v' '-pg' '-g' '-nodefaultlibs' '-o' 'vncviewer' '-R' 
> '/usr/sfw/lib' '-shared-libgcc' '-mcpu=v9'
>  /usr/libexec/gcc/sparc-sun-solaris2.10/4.6.4/collect2 
> --sysroot=/usr/sparc-sun-solaris2.10/sys-root -V -R /usr/sfw/lib -Y 
> P,/usr/sparc-sun-solaris2.10/sys-root/usr/ccs/lib/libp:/usr/sparc-sun-solaris2.10/sys-root/usr/lib/libp:/usr/sparc-sun-solaris2.10/sys-root/usr/ccs/lib:/usr/sparc-sun-solaris2.10/sys-root/usr/lib:/usr/sparc-sun-solaris2.10/sys-root/lib
>  -rpath-link /usr/sparc-sun-solaris2.10/sys-root/usr/lib -Qy -o vncviewer 
> /usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/gcrt1.o 
> /usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/gmon.o 
> /usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/crti.o 
> /usr/sparc-sun-solaris2.10/sys-root/usr/lib/values-Xa.o 
> /usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/crtbegin.o 
> -L/usr/lib/gcc/sparc-sun-solaris2.10/4.6.4 
> -L/usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/../../../../sparc-sun-solaris2.10/lib
>  -L/usr/sparc-sun-solaris2.10/sys-root/lib 
> -L/usr/sparc-sun-solaris2.10/sys-root/usr/lib --no-copy-dt-needed-entries 
> CMakeFiles/vncviewer.dir/menukey.cxx.o CMakeFiles/vncviewer.dir/CConn.cxx.o 
> CMakeFiles/vncviewer.dir/DesktopWindow.cxx.o 
> CMakeFiles/vncviewer.dir/FLTKPixelBuffer.cxx.o 
> CMakeFiles/vncviewer.dir/UserDialog.cxx.o 
> CMakeFiles/vncviewer.dir/ServerDialog.cxx.o 
> CMakeFiles/vncviewer.dir/OptionsDialog.cxx.o 
> CMakeFiles/vncviewer.dir/PlatformPixelBuffer.cxx.o 
> CMakeFiles/vncviewer.dir/Viewport.cxx.o 
> CMakeFiles/vncviewer.dir/parameters.cxx.o 
> CMakeFiles/vncviewer.dir/keysym2ucs.c.o 
> CMakeFiles/vncviewer.dir/vncviewer.cxx.o 
> CMakeFiles/vncviewer.dir/X11PixelBuffer.cxx.o ../common/rfb/librfb.a 
> ../common/network/libnetwork.a ../common/rdr/librdr.a ../common/os/libos.a 
> ../common/Xregion/libXregion.a -Bstatic -lfltk_images -lpng -ljpeg -lfltk 
> -Bdynamic -lm -ldl -Bstatic -lXft -Bdynamic -lXcursor 
> /usr/sparc-sun-solaris2.10/sys-root/usr/sfw/lib/libXfixes.so -lfontconfig 
> -lXext -lX11 -lz -Bstatic -ljpeg -Bdynamic -lpam -Bstatic -lgnutls -ltasn1 
> -lnettle -lhogweed -lgmp -Bdynamic -lrt -lsocket 
> /usr/sparc-sun-solaris2.10/sys-root/usr/lib/libz.so -Bstatic -lstdc++ 
> -Bdynamic -lgcc -lgcc_eh -lc 
> /usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/crtend.o 
> /usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/crtn.o
> GNU ld (GNU Binutils) 2.25
>   Supported emulations:
>    elf32_sparc_sol2
>    elf32_sparc
>    elf64_sparc_sol2
>    elf64_sparc
> /usr/lib/gcc/sparc-sun-solaris2.10/4.6.4/../../../../sparc-sun-solaris2.10/bin/ld:
>  /usr/sparc-sun-solaris2.10/sys-root/usr/lib/libXft.a(xftfreetype.o): 
> undefined reference to symbol 'XRenderFindStandardFormat@@RENDER_0.5'
> /usr/sparc-sun-solaris2.10/sys-root/usr/openwin/sfw/lib/libXrender.so.1: 
> error adding symbols: DSO missing from command line
> collect2: ld returned 1 exit status

Hopefully you can fix this error message so it is easier to figure out what's
going on.

Thanks.

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