Re: [CMake] How pass a -spec parameter to FindQt4.cmake?

2011-07-22 Thread Clinton Stimpson 
On Thursday, July 21, 2011 11:48:04 pm Daniel Näslund wrote:
 On Thu, Jul 21, 2011 at 7:00 PM,  clin...@elemtech.com wrote:
  Managed to compile and link when I added the following snippet to the
  toolchain file:
  
  set(QT_HEADERS_DIR /opt/env/lenny-ppc/usr/lib)
  set(QT_LIBRARY_DIR /opt/env/lenny-ppc/usr/include/qt4)
  
  set(QT_QTCORE_LIBRARY /opt/env/lenny-ppc/usr/lib/libQtCore.so)
  set(QT_QTCORE_LIBRARY_RELEASE
  /opt/env/lenny-ppc/usr/lib/libQtCore.so)
  set(QT_QTCORE_INCLUDE_DIR /opt/env/lenny-ppc/usr/include/qt4)
  
  set(QT_QTDBUS_LIBRARY /opt/env/lenny-ppc/usr/lib/libQtDBus.so)
  set(QT_QTDBUS_LIBRARY_RELEASE
  /opt/env/lenny-ppc/usr/lib/libQtDBus.so)
  set(QT_QTDBUS_INCLUDE_DIR /opt/env/lenny-ppc/usr/include/qt4)
  
  set(QT_QTXML_LIBRARY /opt/env/lenny-ppc/usr/lib/libQtXml.so)
  set(QT_QTXML_LIBRARY_RELEASE
  /opt/env/lenny-ppc/usr/lib/libQtXml.so)
  set(QT_QTXML_INCLUDE_DIR /opt/env/lenny-ppc/usr/include/qt4)
  
  Would have been nice if I didn't have to set those paths explicitely.
  Will continue the digging.
  
  Does it work if you only specify just this:
 set(QT_HEADERS_DIR /opt/env/lenny-ppc/usr/include/qt4)
 set(QT_QTCORE_LIBRARY_RELEASE
   /opt/env/lenny-ppc/usr/lib/libQtCore.so)
 
 Unfortunately no. I get:
 
 Warning: QT_QMAKE_EXECUTABLE reported QT_INSTALL_LIBS as /usr/lib
 Warning: But QtCore couldn't be found.  Qt must NOT be installed
 correctly, or it wasn't found for cross compiling.
 CMake Error at /usr/share/cmake-2.8/Modules/FindQt4.cmake:642
 (MESSAGE): Could NOT find QtCore.  Check
 /tmp/tmpMm5uhv/CMakeFiles/CMakeError.log for more details.

Ok then perhaps you'll need a newer cmake for it to work.
I looked again and it should actually be as simple as:
set(QT_QTCORE_INCLUDE_DIR /opt/env/lenny-ppc/usr/include/qt4)
set(QT_QTCORE_LIBRARY_RELEASE /opt/env/lenny-ppc/usr/lib/libQtCore.so)
and the others should be found based on that.

 
  And I would have thought it can find QtCore if /opt/env/lenny-ppc/usr
  was given as a find root.  No?
 
 Adding /opt/env/lenny-ppc/usr causes Pkg-config to choke:
 
 -- checking for module 'ecco-sqlite-1.12'
 /opt/env/lenny-ppc/usr/bin/pkg-config: 1: Syntax error: ( unexpected
 --   package 'ecco-sqlite-1.12' not found
 CMake Error at
 /usr/share/cmake-2.8/Modules/FindPkgConfig.cmake:266 (message):
   A required package was not found
 Call Stack (most recent call first):
   /usr/share/cmake-2.8/Modules/FindPkgConfig.cmake:320
 (_pkg_check_modules_internal)
   CMakeLists.txt:51 (pkg_check_modules)
 
 This happens for each of the libraries we're trying to detect with
 PkgConfig.

Ok, then it looks like the PkgConfig stuff needs fixed as well.

 
 Adding /opt/env/lenny-ppc/usr/share/qt4 to CMAKE_FIND_ROOT_PATH gives:
 
 -- Found Qt-Version 4.6.3 (using /usr/bin/qmake)
 CMake Error: The following variables are used in this project, but
 they are set to NOTFOUND.
 Please set them or make sure they are set and tested correctly in the
 CMake files:
 QT_QTCORE_INCLUDE_DIR (ADVANCED)
used as include directory in directory /home/dannas/bigsister_775
 
 Trying to prefix the PATH enviroment variable with
 /opt/env/lenny-ppc/usr/share/qt4 gives the same result.

Ok, I think the following will fix that by automatically finding the headers if 
Qt was configured with -headerdir include/qt4

--- a/Modules/FindQt4.cmake
+++ b/Modules/FindQt4.cmake
@@ -620,7 +620,7 @@ IF (QT_QMAKE_EXECUTABLE AND QTVERSION)
   SET(QT_QTCORE_INCLUDE_DIR NOTFOUND)
   FIND_PATH(QT_QTCORE_INCLUDE_DIR QtCore
 HINTS ${qt_headers} ${QT_LIBRARY_DIR}
-PATH_SUFFIXES QtCore
+PATH_SUFFIXES QtCore qt4/QtCore
 )

With that patch, and you adding /opt/env/lenny-ppc/usr to 
CMAKE_FIND_ROOT_PATH, then Qt will be found without you helping it (that is if 
the PkgConfig thing gets fixed too).

-- 
Clinton Stimpson
Elemental Technologies, Inc
Computational Simulation Software, LLC
www.csimsoft.com
___
Powered by www.kitware.com

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the CMake FAQ at: 
http://www.cmake.org/Wiki/CMake_FAQ

Follow this link to subscribe/unsubscribe:
http://www.cmake.org/mailman/listinfo/cmake

Re: [CMake] How pass a -spec parameter to FindQt4.cmake?

2011-07-21 Thread clinton 


- Original Message -
 Hi Clint and thanks for your advices (sorry about the delayed
 answer),
 
 On Tue, Jul 19, 2011 at 1:33 AM, clin...@elemtech.com
 clin...@elemtech.com wrote:
  When cross compiling, only some the qmake queries are actually
  used.
 
  Finding the rest just works if subdirs in the Qt installation
  weren't given
  different values when running Qt's configure script (e.g.
  --libdir=mylib or
  --libdir=lib/qt4).
 
  So, the root of the Qt installation needs to be given in the
  toolchain file.
   Is /opt/env/lenny-ppc/usr/lib/qt4 the root of the installation, or
  the
  location of the libraries?
 
  In either case, it won't be searched unless you put that in your
 toolchain
  file.  The standard cross compile find variables are the global
  variables you
  can setto help find Qt.
 
 I included /opt/env/lenny-ppc/usr/share/qt4 (which I belive to be the
 root of
 the Qt installation) in CMAKE_FIND_ROOT_PATH but the Qt libraries
 still wasn't
 detected.
 
  Then, if you need to help it some more, you may set the path to the
  QtCore
  library manually, or other variables manually.
 
 Managed to compile and link when I added the following snippet to the
 toolchain file:
 
 set(QT_HEADERS_DIR /opt/env/lenny-ppc/usr/lib)
 set(QT_LIBRARY_DIR /opt/env/lenny-ppc/usr/include/qt4)
 
 set(QT_QTCORE_LIBRARY /opt/env/lenny-ppc/usr/lib/libQtCore.so)
 set(QT_QTCORE_LIBRARY_RELEASE
 /opt/env/lenny-ppc/usr/lib/libQtCore.so)
 set(QT_QTCORE_INCLUDE_DIR /opt/env/lenny-ppc/usr/include/qt4)
 
 set(QT_QTDBUS_LIBRARY /opt/env/lenny-ppc/usr/lib/libQtDBus.so)
 set(QT_QTDBUS_LIBRARY_RELEASE
 /opt/env/lenny-ppc/usr/lib/libQtDBus.so)
 set(QT_QTDBUS_INCLUDE_DIR /opt/env/lenny-ppc/usr/include/qt4)
 
 set(QT_QTXML_LIBRARY /opt/env/lenny-ppc/usr/lib/libQtXml.so)
 set(QT_QTXML_LIBRARY_RELEASE
 /opt/env/lenny-ppc/usr/lib/libQtXml.so)
 set(QT_QTXML_INCLUDE_DIR /opt/env/lenny-ppc/usr/include/qt4)
 
 Would have been nice if I didn't have to set those paths explicitely.
 Will continue the digging.

Does it work if you only specify just this:
set(QT_HEADERS_DIR /opt/env/lenny-ppc/usr/include/qt4)
set(QT_QTCORE_LIBRARY_RELEASE  /opt/env/lenny-ppc/usr/lib/libQtCore.so)

And I would have thought it can find QtCore if /opt/env/lenny-ppc/usr was given 
as a find root.
No?

Clint
___
Powered by www.kitware.com

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the CMake FAQ at: 
http://www.cmake.org/Wiki/CMake_FAQ

Follow this link to subscribe/unsubscribe:
http://www.cmake.org/mailman/listinfo/cmake

Re: [CMake] How pass a -spec parameter to FindQt4.cmake?

2011-07-21 Thread Daniel Näslund 
On Thu, Jul 21, 2011 at 7:00 PM,  clin...@elemtech.com wrote:
 Managed to compile and link when I added the following snippet to the
 toolchain file:

     set(QT_HEADERS_DIR /opt/env/lenny-ppc/usr/lib)
     set(QT_LIBRARY_DIR /opt/env/lenny-ppc/usr/include/qt4)

     set(QT_QTCORE_LIBRARY /opt/env/lenny-ppc/usr/lib/libQtCore.so)
     set(QT_QTCORE_LIBRARY_RELEASE
     /opt/env/lenny-ppc/usr/lib/libQtCore.so)
     set(QT_QTCORE_INCLUDE_DIR /opt/env/lenny-ppc/usr/include/qt4)

     set(QT_QTDBUS_LIBRARY /opt/env/lenny-ppc/usr/lib/libQtDBus.so)
     set(QT_QTDBUS_LIBRARY_RELEASE
     /opt/env/lenny-ppc/usr/lib/libQtDBus.so)
     set(QT_QTDBUS_INCLUDE_DIR /opt/env/lenny-ppc/usr/include/qt4)

     set(QT_QTXML_LIBRARY /opt/env/lenny-ppc/usr/lib/libQtXml.so)
     set(QT_QTXML_LIBRARY_RELEASE
     /opt/env/lenny-ppc/usr/lib/libQtXml.so)
     set(QT_QTXML_INCLUDE_DIR /opt/env/lenny-ppc/usr/include/qt4)

 Would have been nice if I didn't have to set those paths explicitely.
 Will continue the digging.

 Does it work if you only specify just this:
    set(QT_HEADERS_DIR /opt/env/lenny-ppc/usr/include/qt4)
    set(QT_QTCORE_LIBRARY_RELEASE  /opt/env/lenny-ppc/usr/lib/libQtCore.so)

Unfortunately no. I get:

Warning: QT_QMAKE_EXECUTABLE reported QT_INSTALL_LIBS as /usr/lib
Warning: But QtCore couldn't be found.  Qt must NOT be installed
correctly, or it wasn't found for cross compiling.
CMake Error at /usr/share/cmake-2.8/Modules/FindQt4.cmake:642 (MESSAGE):
  Could NOT find QtCore.  Check /tmp/tmpMm5uhv/CMakeFiles/CMakeError.log for
  more details.

 And I would have thought it can find QtCore if /opt/env/lenny-ppc/usr
 was given as a find root.  No?

Adding /opt/env/lenny-ppc/usr causes Pkg-config to choke:

-- checking for module 'ecco-sqlite-1.12'
/opt/env/lenny-ppc/usr/bin/pkg-config: 1: Syntax error: ( unexpected
--   package 'ecco-sqlite-1.12' not found
CMake Error at
/usr/share/cmake-2.8/Modules/FindPkgConfig.cmake:266 (message):
  A required package was not found
Call Stack (most recent call first):
  /usr/share/cmake-2.8/Modules/FindPkgConfig.cmake:320
(_pkg_check_modules_internal)
  CMakeLists.txt:51 (pkg_check_modules)

This happens for each of the libraries we're trying to detect with
PkgConfig.

Adding /opt/env/lenny-ppc/usr/share/qt4 to CMAKE_FIND_ROOT_PATH gives:

-- Found Qt-Version 4.6.3 (using /usr/bin/qmake)
CMake Error: The following variables are used in this project, but
they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the
CMake files:
QT_QTCORE_INCLUDE_DIR (ADVANCED)
   used as include directory in directory /home/dannas/bigsister_775

Trying to prefix the PATH enviroment variable with
/opt/env/lenny-ppc/usr/share/qt4 gives the same result.

Daniel
___
Powered by www.kitware.com

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the CMake FAQ at: 
http://www.cmake.org/Wiki/CMake_FAQ

Follow this link to subscribe/unsubscribe:
http://www.cmake.org/mailman/listinfo/cmake

Re: [CMake] How pass a -spec parameter to FindQt4.cmake?

2011-07-18 Thread clin...@elemtech.com 
What version of cmake are you using? And since you are cross-compiling, what 
does your toolchain file for cmake look like?  Did you add a find path in that 
file for your powerpc libs?
The spec file only applies on qmake generated makefiles, which is not happening 
when using cmake.
And you do not need to build your own qmake.

Clint

- Reply message -
From: Daniel Näslund dan...@dannas.name
Date: Mon, Jul 18, 2011 12:12 am
Subject: [CMake] How pass a -spec parameter to FindQt4.cmake?
To: cmake@cmake.org

Hi!

I'm trying to cross-compile a Qt-application for the powerpc platform.
CMake looks for the Qt libraries in the wrong place - it finds the host
libraries instead of the target libraries:

Warning: QT_QMAKE_EXECUTABLE reported QT_INSTALL_LIBS as /usr/lib
Warning: But QtCore couldn't be found.  Qt must NOT be installed
correctly, or it wasn't found for cross compiling.
CMake Error at /usr/share/cmake-2.8/Modules/FindQt4.cmake:642 (MESSAGE):
  Could NOT find QtCore.  Check /tmp/tmp8VJ3jw/CMakeFiles/CMakeError.log for
  more details.
Call Stack (most recent call first):
  CMakeLists.txt:60 (find_package)

My powerpc libs are located in /opt/env/ppc/usr/lib.

When I read FindQt4.cmake I see that CMake uses QMake for finding out
where the Qt libs reside using qmake -query.

Is there an easy way to let CMake tell QMake about what platform we want
to build for? I've tried...

...Using an environment variable
$ QMAKESPEC=qws/linux-powerpc-g++ cmake

...Using a shell wrappper
$ cat END  ~/bin/qmake
#!/bin/sh

qmake -spec qws/linux-ppc-g++ -query $*
END
$ cmake

The environment variable didn't make any difference and the shell wrapper
failed since qmake didn't allow the -spec and -query flag to be passed
simultaneously.

All of the three resources below suggests that compiling my own version
of qmake is the way to go but to me it sounds a bit counter-intuitive;
why would cmake not allow me to pass a -spec parameter to qmake?

http://www.linuxjournal.com/content/cross-compiling-qt
http://www.cmake.org/pipermail/cmake/2010-June/037239.html
http://www.trinitydesktop.org/docs/qt4/qt-embedded-crosscompiling.html

--

Thanks,
Daniel Näslund
___
Powered by www.kitware.com

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the CMake FAQ at: 
http://www.cmake.org/Wiki/CMake_FAQ

Follow this link to subscribe/unsubscribe:
http://www.cmake.org/mailman/listinfo/cmake
___
Powered by www.kitware.com

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the CMake FAQ at: 
http://www.cmake.org/Wiki/CMake_FAQ

Follow this link to subscribe/unsubscribe:
http://www.cmake.org/mailman/listinfo/cmake

Re: [CMake] How pass a -spec parameter to FindQt4.cmake?

2011-07-18 Thread Daniel Näslund 
On Mon, Jul 18, 2011 at 07:23:26AM -0700, clin...@elemtech.com wrote:
 What version of cmake are you using? 

$ cmake --version
cmake version 2.8.4

 And since you are cross-compiling, what does your toolchain file for
 cmake look like?  

The contents of my toolchain.cmake file:

set(CMAKE_SYSTEM_NAME Linux)
set(CROSSPREFIX /opt/crosstool/gcc-4.2.0-glibc-2.5/powerpc-603-linux-gnu)

set(CMAKE_C_COMPILER   ${CROSSPREFIX}/bin/powerpc-603-linux-gnu-gcc)
set(CMAKE_CXX_COMPILER ${CROSSPREFIX}/bin/powerpc-603-linux-gnu-g++)
set(CMAKE_LINKER   ${CROSSPREFIX}/bin/powerpc-603-linux-gnu-ld)

set(CMAKE_FIND_ROOT_PATH ${CROSSPREFIX}/lib
 /opt/env/lenny-ppc/lib
 /opt/env/lenny-ppc/usr/lib)

set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

The part of my CMakeLists.txt that tries to find a Qt installation:

if (USE_QT)
message(STATUS Build support for QT is enabled.)
find_package(Qt4 4.4 COMPONENTS QtCore QtDbus REQUIRED)
set(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} -DHAS_QT)
include(${QT_USE_FILE})
else()
message(STATUS Build support for QT is disabled.)
endif (HAS_QT)

 Did you add a find path in that file for your powerpc libs?  

Since the libs are located in /opt/env/lenny-ppc/usr/lib/qt4 I expect
that this line taken from the toolchain file above is sufficient:

set(CMAKE_FIND_ROOT_PATH ${CROSSPREFIX}/lib
 /opt/env/lenny-ppc/lib
 /opt/env/lenny-ppc/usr/lib)

 The spec file only applies on qmake generated makefiles, which is not
 happening when using cmake.  

Ah, 

 And you do not need to build your own qmake.

Ok. But I don't see how I can make qmake return the right information.
Here's the function in FindQt4.cmake that is used for querying qmake:

function(_QT4_QUERY_QMAKE VAR RESULT)
  exec_program(${QT_QMAKE_EXECUTABLE} ARGS -query ${VAR} RETURN_VALUE 
return_code OUTPUT_VARIABLE output )
  if(NOT return_code)
file(TO_CMAKE_PATH ${output} output)
set(${RESULT} ${output} PARENT_SCOPE)
  endif(NOT return_code)
endfunction(_QT4_QUERY_QMAKE)

I don't see anywhere that it relies upon some variable that I can change
in order to have it point at the target Qt4 installation. Is there some
global variable involved for setting the base directory or something
similar?

Daniel
___
Powered by www.kitware.com

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the CMake FAQ at: 
http://www.cmake.org/Wiki/CMake_FAQ

Follow this link to subscribe/unsubscribe:
http://www.cmake.org/mailman/listinfo/cmake

Re: [CMake] How pass a -spec parameter to FindQt4.cmake?

2011-07-18 Thread clin...@elemtech.com 
When cross compiling, only some the qmake queries are actually used.  

Finding the rest just works if subdirs in the Qt installation weren't given 
different values when running Qt's configure script (e.g. --libdir=mylib or 
--libdir=lib/qt4).

So, the root of the Qt installation needs to be given in the toolchain file.  
Is /opt/env/lenny-ppc/usr/lib/qt4 the root of the installation, or the location 
of the libraries?  In either case, it won't be searched unless you put that in 
your toolchain file.  The standard cross compile find variables are the global 
variables you can setto help find Qt.

Then, if you need to help it some more, you may set the path to the QtCore 
library manually, or other variables manually.

If lib/qt4 is another path that should be searched automatically, let us know, 
and we can add it to FindQt4.cmake.

Clint

- Reply message -
From: Daniel Näslund dan...@dannas.name
Date: Mon, Jul 18, 2011 11:50 am
Subject: [CMake] How pass a -spec parameter to FindQt4.cmake?
To: clin...@elemtech.com clin...@elemtech.com
Cc: cmake@cmake.org


On Mon, Jul 18, 2011 at 07:23:26AM -0700, clin...@elemtech.com wrote:
 What version of cmake are you using? 

$ cmake --version
cmake version 2.8.4

 And since you are cross-compiling, what does your toolchain file for
 cmake look like?  

The contents of my toolchain.cmake file:

set(CMAKE_SYSTEM_NAME Linux)
set(CROSSPREFIX /opt/crosstool/gcc-4.2.0-glibc-2.5/powerpc-603-linux-gnu)

set(CMAKE_C_COMPILER   ${CROSSPREFIX}/bin/powerpc-603-linux-gnu-gcc)
set(CMAKE_CXX_COMPILER ${CROSSPREFIX}/bin/powerpc-603-linux-gnu-g++)
set(CMAKE_LINKER   ${CROSSPREFIX}/bin/powerpc-603-linux-gnu-ld)

set(CMAKE_FIND_ROOT_PATH ${CROSSPREFIX}/lib
 /opt/env/lenny-ppc/lib
 /opt/env/lenny-ppc/usr/lib)

set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

The part of my CMakeLists.txt that tries to find a Qt installation:

if (USE_QT)
message(STATUS Build support for QT is enabled.)
find_package(Qt4 4.4 COMPONENTS QtCore QtDbus REQUIRED)
set(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} -DHAS_QT)
include(${QT_USE_FILE})
else()
message(STATUS Build support for QT is disabled.)
endif (HAS_QT)

 Did you add a find path in that file for your powerpc libs?  

Since the libs are located in /opt/env/lenny-ppc/usr/lib/qt4 I expect
that this line taken from the toolchain file above is sufficient:

set(CMAKE_FIND_ROOT_PATH ${CROSSPREFIX}/lib
 /opt/env/lenny-ppc/lib
 /opt/env/lenny-ppc/usr/lib)

 The spec file only applies on qmake generated makefiles, which is not
 happening when using cmake.  

Ah, 

 And you do not need to build your own qmake.

Ok. But I don't see how I can make qmake return the right information.
Here's the function in FindQt4.cmake that is used for querying qmake:

function(_QT4_QUERY_QMAKE VAR RESULT)
  exec_program(${QT_QMAKE_EXECUTABLE} ARGS -query ${VAR} RETURN_VALUE 
return_code OUTPUT_VARIABLE output )
  if(NOT return_code)
file(TO_CMAKE_PATH ${output} output)
set(${RESULT} ${output} PARENT_SCOPE)
  endif(NOT return_code)
endfunction(_QT4_QUERY_QMAKE)

I don't see anywhere that it relies upon some variable that I can change
in order to have it point at the target Qt4 installation. Is there some
global variable involved for setting the base directory or something
similar?

Daniel
___
Powered by www.kitware.com

Visit other Kitware open-source projects at 
http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the CMake FAQ at: 
http://www.cmake.org/Wiki/CMake_FAQ

Follow this link to subscribe/unsubscribe:
http://www.cmake.org/mailman/listinfo/cmake