Re: configtool for linux building problems.
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Hi David On 22/06/12 19:26, David Fernandez wrote: >>> 2.- Edit the makefile.gnu in ecos/host/tools/configtool/standalone, and >>> add to the line EXTRALDFLAGS, at the end, after leaving a space, -lX11 >>> >> I have not found -lX11 to be necessary. The invocation of wx-config >> within makefile.gnu should return all the flags necessary to link with >> the X window system. Which Linux distro and version are you using? Can >> you forward the link-time error you observe without this change >> (including all the command-line arguments) please? > > This is the "simplified" output: > > c++ -o configtool <lots-of-files.o> -LTCLDIR_use_system/lib -L/usr/local/lib > -l<other-libs>... -ltcl `/usr/local/bin/wx-config --libs std,gizmos` > /usr/bin/ld: /usr/local/lib/libwx_gtk2_core-2.8.a(corelib_utilsx11.o): > undefined reference to symbol 'XGetWindowAttributes' > /usr/bin/ld: note: 'XGetWindowAttributes' is defined in DSO > /usr/lib/libX11.so.6 so try adding it to the linker command line > /usr/lib/libX11.so.6: could not read symbols: Invalid operation > collect2: ld returned 1 exit status > make: *** [/<my-build -folder>] Error 1 > > I compiled this in Fedora14+wxGTK-2.8.12 and Fedora15+wxGTK-2.8.8, and I > get the same problem in both of them (both wxGTK were compiled from > sources and installed in /usr/local, I know that /usr/local/bin is in > the PATH, but my LD_LIBRARY_PATH is empty, as I rely in the config > scripts for wx and tcl). This is almost certainly due to recent Fedora builds of GNU ld using different DSO-linking semanics. Ref: http://fedoraproject.org/wiki/Features/ChangeInImplicitDSOLinking Specifying -lX11 explictly for Linux builds seems reasonable and should be safe for other users. I've attached a patch at: http://bugs.ecos.sourceware.org/show_bug.cgi?id=1001613 Thank you for reporting this. John Dallaway eCos maintainer http://www.dallaway.org.uk/john -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss