actully I saw it there but then I was not sure if it needs another
condition block for shared_library but before asking you again I
wanted to try to build chrome (hammer app) and see if that works as
you suggested.

Thanks!
Nidhi

On Apr 24, 9:16 am, Craig Schlenter <[email protected]> wrote:
> Hmmm ... actually it seems as if -ldl is present in
> third_party/libxml/libxml.gyp ... so take a look if it's there for you
> and run gclient sync if it isn't. Try running gclient runhooks --force
> if none of the other things work. Perhaps your scons files have not
> been updated properly.
>
> --Craig
>
> On Fri, Apr 24, 2009 at 3:05 PM, Craig Schlenter
>
> <[email protected]> wrote:
> > Hi
>
> > At some point I had used -ldl in the xml gyp file but then I dropped
> > that when I purely
> > targeted chrome and not any of the other targets ... in fact I haven't
> > even tried building
> > the other targets for a while so it's quite possible that they won't
> > build as shared targets.
>
> > Try
> > hammer app
> > and see if that works or add '-ldl' after '-lm' in libxml.gyp near the
> > xmlcatalog stuff.
>
> > Thanks!
>
> > --Craig
>
> > On Fri, Apr 24, 2009 at 2:26 PM, Dean McNamee <[email protected]> wrote:
>
> >> The obvious fix would be to add -ldl, but I don't see why libxml
> >> should be using it...
>
> >> From a quick peek at the code, I saw xmlmodules.c using dlerror / etc
> >> for dynamic module support.  Since libxml is running sandboxed, do we
> >> really want dynamic module support?
>
> >> In specific, it seems like we have LIBXML_MODULES_ENABLED defined in
> >> our xmlversion.h...
>
> >> On Fri, Apr 24, 2009 at 2:18 PM, nshah <[email protected]> wrote:
>
> >>> This group is very impressive, always so quick in reply!
> >>> Thanks for quick reply!
> >>> I did hammer --verbose and here is the command if that helps:
>
> >>> cd /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/src/base
> >>> && ../chrome/tools/build/linux/version.sh
> >>> file_version_info_linux.h.version /home/dev/ProgramFiles/v8/home/
> >>> chrome-svn/tarball/chromium/src/sconsbuild/Debug/obj/
> >>> global_intermediate/base/file_version_info_linux.h
> >>> flock /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/src/
> >>> sconsbuild/Debug/linker.lock gcc -o /home/dev/ProgramFiles/v8/home/
> >>> chrome-svn/tarball/chromium/src/sconsbuild/Debug/xmlcatalog -L/home/
> >>> dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/src/sconsbuild/
> >>> Debug/lib -Wl,-rpath=/home/dev/ProgramFiles/v8/home/chrome-svn/tarball/
> >>> chromium/src/sconsbuild/Debug/lib -m32 -pthread /home/dev/ProgramFiles/
> >>> v8/home/chrome-svn/tarball/chromium/src/sconsbuild/Debug/obj/
> >>> third_party/libxml/xmlcatalog.o -Wl,--start-group -lm -lxml2 -Wl,--end-
> >>> group
> >>> /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/src/
> >>> sconsbuild/Debug/lib/libxml2.so: undefined reference to `dlsym'
> >>> /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/src/
> >>> sconsbuild/Debug/lib/libxml2.so: undefined reference to `dlerror'
> >>> /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/src/
> >>> sconsbuild/Debug/lib/libxml2.so: undefined reference to `dlopen'
> >>> /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/src/
> >>> sconsbuild/Debug/lib/libxml2.so: undefined reference to `dlclose'
> >>> collect2: ld returned 1 exit status
> >>> scons: *** [/home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/
> >>> src/sconsbuild/Debug/xmlcatalog] Error 1
> >>> gcc -o /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/src/
> >>> sconsbuild/Debug/obj/third_party/harfbuzz/src/harfbuzz-tibetan.os -c -
> >>> m32 -pthread -march=pentium4 -fno-exceptions -msse2 -mfpmath=sse -I/
> >>> usr/include/freetype2 -O0 -g -fPIC -DCHROMIUM_BUILD -DTOOLKIT_GTK=1 -
> >>> D_DEBUG -I/home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/
> >>> src/sconsbuild/Debug/obj/third_party/harfbuzz/src -I/home/dev/
> >>> ProgramFiles/v8/home/chrome-svn/tarball/chromium/src/third_party/
> >>> harfbuzz/src /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/
> >>> chromium/src/third_party/harfbuzz/src/harfbuzz-tibetan.c
> >>> scons: building terminated because of errors.
>
> >>> On Apr 24, 7:41 am, Dean McNamee <[email protected]> wrote:
> >>>> Looks like it's missing -ldl, but I haven't looked closely.
>
> >>>> On Fri, Apr 24, 2009 at 12:57 PM, nshah <[email protected]> wrote:
>
> >>>> > hi there,
>
> >>>> > thanks for working on getting the shared lib of libraries! I was
> >>>> > pointed to this work by Evan Martin as well and he pointed me to this
> >>>> > (http://codereview.chromium.org/88058). However I am having some
> >>>> > difficulty getting it to build and it errors out while building
> >>>> > libxml.
>
> >>>> > ==================================================
> >>>> > ...
> >>>> > Compiling /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/
> >>>> > src/sconsbuild/Debug/obj/third_party/harfbuzz/src/harfbuzz-gsub.os
> >>>> > Linking /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/src/
> >>>> > sconsbuild/Debug/lib/libxml2.so
> >>>> > Linking /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/src/
> >>>> > sconsbuild/Debug/xmlcatalog
> >>>> > Compiling /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/
> >>>> > src/sconsbuild/Debug/obj/third_party/harfbuzz/src/harfbuzz-impl.os
> >>>> > Compiling /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/
> >>>> > src/sconsbuild/Debug/obj/third_party/harfbuzz/src/harfbuzz-open.os
> >>>> > Compiling /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/
> >>>> > src/sconsbuild/Debug/obj/third_party/harfbuzz/src/harfbuzz-shaper.os
> >>>> > /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/src/
> >>>> > sconsbuild/Debug/lib/libxml2.so: undefined reference to `dlsym'
> >>>> > /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/src/
> >>>> > sconsbuild/Debug/lib/libxml2.so: undefined reference to `dlerror'
> >>>> > /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/src/
> >>>> > sconsbuild/Debug/lib/libxml2.so: undefined reference to `dlopen'
> >>>> > /home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/src/
> >>>> > sconsbuild/Debug/lib/libxml2.so: undefined reference to `dlclose'
> >>>> > collect2: ld returned 1 exit status
> >>>> > scons: *** [/home/dev/ProgramFiles/v8/home/chrome-svn/tarball/chromium/
> >>>> > src/sconsbuild/Debug/xmlcatalog] Error 1
> >>>> > scons: building terminated because of errors.
> >>>> > ===============================================
>
> >>>> >  Here are the steps that I tried:
>
> >>>> > a) first I tried to download each patch from patch set 4 and patched
> >>>> > the corresponding files  manually. Removed sconsbuild directory and
> >>>> > rebuilt. it had the same errors.
>
> >>>> > I read your instructions in Description section but I did not
> >>>> > understand where exactly I need to make changes to exclude and include
> >>>> > those files. I looked at all_main.scons and common.gypi. it would be
> >>>> > really helpful if you can elaborate on those instructions.
>
> >>>> > b) I did a get latest with revision 14166 by using following command:
> >>>> > CHROMIUM_ROOT$ gclient sync --revision s...@14166
>
> >>>> > (chromium root = directory that has src directory in it).
>
> >>>> > Let me know what steps I might be missing. Another point I want to add
> >>>> > is that I have followed the instructions in 'Staying Green more of the
> >>>> > time' section of getting code on chrome wiki for linux developers, if
> >>>> > that matters any.
>
> >>>> > Thanks,
>
> >>>> > On Apr 21, 8:21 pm, Steven Knight <[email protected]> wrote:
> >>>> >> The gyp build can generate shared libraries on Linux (as of r14166).
>
> >>>> >> You can set up to use shared libraries by setting the GYP_DEFINES 
> >>>> >> variable
> >>>> >> as follows:
>
> >>>> >> $ export GYP_DEFINES='library=shared_library'
> >>>> >> $ gclient runhooks --force
>
> >>>> >> If it's not set when you run "gclient", it will silently generate 
> >>>> >> .scons
> >>>> >> files that build with static libraries, of course, so put it in your
> >>>> >> .profile or .bashrc or whatever suits.
>
> >>>> >> As an alternative to an environment variable, put the following text 
> >>>> >> in the
> >>>> >> ~/.gyp/include.gypi startup file in your home directory:
>
> >>>> >> {
> >>>> >>   'variables': {
> >>>> >>     'library': 'shared_library',
> >>>> >>   },
>
> >>>> >> }
>
> >>>> >> Note that you *can* build shared and static in the same tree by 
> >>>> >> switching
> >>>> >> back and forth (the shared object files will have a different 
> >>>> >> suffix), but
> >>>> >> the .a and .so files get built in the same 
> >>>> >> sconsbuild/{Debug,Release}/lib
> >>>> >> directory.  This can throw you for a loop if the linker decides to 
> >>>> >> use an
> >>>> >> old .so in preference to the new .a you just built, so it's safer to 
> >>>> >> clean
> >>>> >> things out (at least the lib/ subdirectory, anyway).
>
> >>>> >>         --SK
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