cross compiler disrupting xlib and gl links..

[Keith Kyzivat <kkyzivat at physiometrix dot com>]

Ok, this started me off on this whole tangent of canadian crossing.

My problem:
when I use a native toolchain + pre-built qt 3.3.5 to compile and link a 
simple x11 app, things work fine.
when I use a cross-compiled toolchain (same host & target as native 
toolchain) + the same pre-built qt 3.3.5 to compile and link a simple 
x11 app, I get quite a few undefined references to X11 symbols 
(primarily openGL).
Output seems to indicate it can't find libGL.so.1, and others, but a 
verification of the directory indicates that all the files are there, 
and symlinks are correct.

build platform is i686 in this case (will be x86_64 later once I can 
nail this down), with host and target also i686.

All the libraries are there for it to link to, specified with -L, but 
alas it just doesn't seem to get it.
Is this an issue of magic gnu things happening if a compiler is native 
and not cross-compiled?

eventual compile and link lines:
i686-unknown-linux-gnu-g++ -c -pipe -Wall -W -O2  -DQT_NO_DEBUG 
-DQT_SHARED -DQT_THREAD_SUPPORT 
-I/data/PSA5000/qt-builds/qt-x11/mkspecs/test-xlibcopy -I. 
-I/data/PSA5000/qt-builds/qt-x11/include -I/usr/X11R6/include -o main.o 
main.cpp
i686-unknown-linux-gnu-g++ -Wl,-rpath,/data/PSA5000/qt-builds/qt-x11/lib 
-o helloworld-i18n-simple main.o    -L/data/PSA5000/qt-builds/qt-x11/lib 
-L/usr/X11R6/lib -lqt-mt -lXext -lX11 -lm

g++ output from link:
/home/kkyzivat/gcc-3.3.6-glibc-2.3.5/i686-unknown-linux-gnu/bin/../lib/gcc-lib/i686-unknown-linux-gnu/3.3.6/../../../../i686-unknown-linux-gnu/bin/ld: 
warning: libGL.so.1, needed by 
/data/PSA5000/qt-builds/qt-x11/lib/libqt-mt.so, not found (try using 
-rpath or -rpath-link)
/home/kkyzivat/gcc-3.3.6-glibc-2.3.5/i686-unknown-linux-gnu/bin/../lib/gcc-lib/i686-unknown-linux-gnu/3.3.6/../../../../i686-unknown-linux-gnu/bin/ld: 
warning: libXmu.so.6, needed by 
/data/PSA5000/qt-builds/qt-x11/lib/libqt-mt.so, not found (try using 
-rpath or -rpath-link)
/home/kkyzivat/gcc-3.3.6-glibc-2.3.5/i686-unknown-linux-gnu/bin/../lib/gcc-lib/i686-unknown-linux-gnu/3.3.6/../../../../i686-unknown-linux-gnu/bin/ld: 
warning: libXrender.so.1, needed by 
/data/PSA5000/qt-builds/qt-x11/lib/libqt-mt.so, not found (try using 
-rpath or -rpath-link)
/home/kkyzivat/gcc-3.3.6-glibc-2.3.5/i686-unknown-linux-gnu/bin/../lib/gcc-lib/i686-unknown-linux-gnu/3.3.6/../../../../i686-unknown-linux-gnu/bin/ld: 
warning: libXrandr.so.2, needed by 
/data/PSA5000/qt-builds/qt-x11/lib/libqt-mt.so, not found (try using 
-rpath or -rpath-link)
/home/kkyzivat/gcc-3.3.6-glibc-2.3.5/i686-unknown-linux-gnu/bin/../lib/gcc-lib/i686-unknown-linux-gnu/3.3.6/../../../../i686-unknown-linux-gnu/bin/ld: 
warning: libXcursor.so.1, needed by 
/data/PSA5000/qt-builds/qt-x11/lib/libqt-mt.so, not found (try using 
-rpath or -rpath-link)
/home/kkyzivat/gcc-3.3.6-glibc-2.3.5/i686-unknown-linux-gnu/bin/../lib/gcc-lib/i686-unknown-linux-gnu/3.3.6/../../../../i686-unknown-linux-gnu/bin/ld: 
warning: libXinerama.so.1, needed by 
/data/PSA5000/qt-builds/qt-x11/lib/libqt-mt.so, not found (try using 
-rpath or -rpath-link)
/home/kkyzivat/gcc-3.3.6-glibc-2.3.5/i686-unknown-linux-gnu/bin/../lib/gcc-lib/i686-unknown-linux-gnu/3.3.6/../../../../i686-unknown-linux-gnu/bin/ld: 
warning: libXft.so.2, needed by 
/data/PSA5000/qt-builds/qt-x11/lib/libqt-mt.so, not found (try using 
-rpath or -rpath-link)
/home/kkyzivat/gcc-3.3.6-glibc-2.3.5/i686-unknown-linux-gnu/bin/../lib/gcc-lib/i686-unknown-linux-gnu/3.3.6/../../../../i686-unknown-linux-gnu/bin/ld: 
warning: libfreetype.so.6, needed by 
/data/PSA5000/qt-builds/qt-x11/lib/libqt-mt.so, not found (try using 
-rpath or -rpath-link)
/home/kkyzivat/gcc-3.3.6-glibc-2.3.5/i686-unknown-linux-gnu/bin/../lib/gcc-lib/i686-unknown-linux-gnu/3.3.6/../../../../i686-unknown-linux-gnu/bin/ld: 
warning: libfontconfig.so.1, needed by 
/data/PSA5000/qt-builds/qt-x11/lib/libqt-mt.so, not found (try using 
-rpath or -rpath-link)
/home/kkyzivat/gcc-3.3.6-glibc-2.3.5/i686-unknown-linux-gnu/bin/../lib/gcc-lib/i686-unknown-linux-gnu/3.3.6/../../../../i686-unknown-linux-gnu/bin/ld: 
warning: libSM.so.6, needed by 
/data/PSA5000/qt-builds/qt-x11/lib/libqt-mt.so, not found (try using 
-rpath or -rpath-link)
/home/kkyzivat/gcc-3.3.6-glibc-2.3.5/i686-unknown-linux-gnu/bin/../lib/gcc-lib/i686-unknown-linux-gnu/3.3.6/../../../../i686-unknown-linux-gnu/bin/ld: 
warning: libICE.so.6, needed by 
/data/PSA5000/qt-builds/qt-x11/lib/libqt-mt.so, not found (try using 
-rpath or -rpath-link)
/data/PSA5000/qt-builds/qt-x11/lib/libqt-mt.so: undefined reference to 
`glXQueryServerString'
[... - chopped out repetitive stuff -- ]
`glColor3ub' `FT_Realloc' `glIndexi' `XftGlyphExtents' `glPixelStorei' 
`XftCharIndex' `FcPatternAddInteger' `glBitmap' `SmcSaveYourselfDone' 
`XftDrawSetClip' `XftDrawSetClipRectangles' `glPopAttrib' `glReadPixels' 
`FT_Stream_GetShort' `FcPatternAddBool' `FcPatternGetBool' `XftInit' 
`FT_Load_Glyph' `IceConnectionNumber' `SmcDeleteProperties' 
`XRenderQueryExtension' `FT_Render_Glyph' `glXUseXFont' `glFlush' 
`FcPatternDuplicate' `glListBase' `FT_Get_Char_Index' `FcCharSetHasChar' 
`FT_Stream_ExitFrame' `glXQueryExtension' `FT_Set_Charmap' 
`FT_Stream_GetLong' `FcPatternAddWeak' `FT_Stream_Seek' 
`FcPatternGetDouble' `XftDrawGlyphs' `FcMatrixScale' `FcCharSetAddChar' 
`XcursorLibraryLoadCursor' `IceProcessMessages' `XftDrawDestroy' 
`glMatrixMode' `XftDrawCreateBitmap' `FcMatrixMultiply' `glNewList' 
`FcPatternGetString' `XineramaIsActive' `XineramaQueryScreens' 
`glViewport' `glXDestroyGLXPixmap' `FcPatternGetInteger' `FcFontSort' 
`glDrawBuffer' `glXMakeCurrent' `XRenderComposite' 
`glXQueryExtensionsString' `XRenderFindVisualFormat' 
`XftDrawSetSubwindowMode' `FcPatternGetCharSet' `FcPatternCreate' 
`XRRRootToScreen' `FcPatternAddString' `FcPatternDel' `glGetFloatv' 
`FcPatternAddMatrix' `FcPatternAddDouble' `glRasterPos2i' 
`glXChooseVisual' `XRRQueryExtension' `XftDrawCreateAlpha' 
`XftListFonts' `SmcRequestSaveYourselfPhase2' `FcConfigSubstitute' 
`FcPatternDestroy' `glGetIntegerv' `FcCharSetCount' 
`FT_Stream_EnterFrame' `glPushAttrib' `glCallLists' `glXDestroyContext' 
`glLoadIdentity' `glPopMatrix' `SmcInteractDone' `SmcCloseConnection' 
`glXWaitX' `FcPatternAddCharSet' `glOrtho' `SmcSetProperties' 
`glClearColor' `glRasterPos3d' `FT_Free' `glClearIndex' 
`XftFontOpenPattern' `glEndList' `glXGetClientString' `XftLockFace' 
`XRenderChangePicture' `glPushMatrix' `XineramaQueryExtension' 
`XftDrawCreate' `FcPatternGetMatrix' `XmuLookupStandardColormap' 
`FcCharSetCreate' `XftUnlockFace' `SmcOpenConnection' `FcMatrixShear' 
`XRRSelectInput' `SmcInteractRequest' `XftInitFtLibrary' `glXIsDirect' 
`glXSwapBuffers' `glXCreateContext' `XRRUpdateConfiguration' 
`glXGetConfig' `XftFontMatch' `FT_Stream_Pos' `XftCharExists' 
`XftFontClose' `FT_Alloc' `FcCharSetDestroy' `SmcGetIceConnection' 
`FcFontSetDestroy' `glXCreateGLXPixmap'
[... -- ]
/data/PSA5000/qt-builds/qt-x11/lib/libqt-mt.so: undefined reference to 
`XftDrawPicture'
collect2: ld returned 1 exit status
gmake: *** [helloworld-i18n-simple] Error 1

custom qt makespec - important (changed/added) lines for those 
interested (modelled after linux-g++ mkspec):
PQMAKE_TCHAIN_PREFIX    = i686-unknown-linux-gnu-
#PQMAKE_X11DIR           = 
/data/PSA5000/qt-builds/X11-libs-includes/i386-linux-XFree-4.3.0.1
PQMAKE_X11DIR           = /usr/X11R6
QMAKE_CC        = $${PQMAKE_TCHAIN_PREFIX}gcc
QMAKE_CXX        = $${PQMAKE_TCHAIN_PREFIX}g++
QMAKE_INCDIR_X11    = $${PQMAKE_X11DIR}/include
QMAKE_LIBDIR_X11    = $${PQMAKE_X11DIR}/lib
MAKE_INCDIR_OPENGL    = $${PQMAKE_X11DIR}/include
QMAKE_LIBDIR_OPENGL    = $${PQMAKE_X11DIR}/lib
QMAKE_LINK        = $${PQMAKE_TCHAIN_PREFIX}g++
QMAKE_LINK_SHLIB    = $${PQMAKE_TCHAIN_PREFIX}g++
QMAKE_AR        = $${PQMAKE_TCHAIN_PREFIX}ar cqs
QMAKE_STRIP             = $${PQMAKE_TCHAIN_PREFIX}strip

~Keith Kyzivat
Embedded Linux Software Engineer
Hospira

Attachment: smime.p7s
Description: S/MIME Cryptographic Signature