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
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