[CMake] CMake Error: Error required internal CMake variable not set

[Johan Björk]

Hi,

Make sure you delete the builddirectory if you change the toolchain file, in
the output you sent all the compiler detection/testing results was cached.

/johan
On Feb 4, 2011 10:27 PM, "Enrique Izaguirre" <enrique.izaguirre at gmail.com>
wrote:
> Thanks Alexander,
> Seems that it doesn't have much information but here it is:
>
> # cmake -DCMAKE_TOOLCHAIN_FILE=../Toolchain-linuxcpp.cmake ..
> System name is:
> Linux
> The Top directory is:
> /home/x0148488/omapflash
> Adding subdirectory comdriver...
> Entering comdriver's CMakeLists
> Now trying to find AdbWinApi.lib library
> Adding subdirectory common...
> Adding subdirectory host...
> -- Configuring done
> CMake Error: Error required internal CMake variable not set, cmake may be
> not be built correctly.
> Missing variable is:
> CMAKE_C_LINK_EXECUTABLE
> -- Generating done
> -- Build files have been written to: /home/x0148488/omapflash/cmake_build
>
> Thanks
>
> Enrique
>
>
>
> 2011/2/4 Alexander Neundorf <a.neundorf-work at gmx.net>
>
>> On Friday 04 February 2011, Enrique Izaguirre wrote:
>> > Hello again,
>> >
>> > I am trying to cross-compile from Windows (actually Cygwin) to Linux.
>> > My Toolchain file (Toolchain-linuxcpp.cmake) is as follows:
>> >
>> > SET(CMAKE_SYSTEM_NAME Linux)
>> >
>> > #specify the cross-compiler
>> > set (CMAKE_C_COMPILER /bin/gcc-linux)
>> > set (CMAKE_CXX_COMPILER /bin/g++-linux)
>> >
>> >
>> > After doing the cmake build using cmake
>> > -DCMAKE_TOOLCHAIN_FILE=../Toolchain-linuxcpp.cmake ..
>> >
>> > CMake Error: Error required internal CMake variable not set, cmake may
be
>> > not be built correctly.
>> > Missing variable is:
>> > CMAKE_C_LINK_EXECUTABLE
>> >
>> >
>> > I have using both compilers separately and I didn't have any problem,
but
>> > when I put them together in the Toolchain file is when this problems
>> comes
>> > up.
>> >
>> > What value CMAKE_C_LINK_EXECUTABLE variable should be set? And where?
>>
>> This should be set via CMakeCInformation.cmake, which loads the platform-
>> and
>> compiler specific files, e.g. Modules/Compiler/GNU-C.cmake.
>> Can you please post the output of the cmake run ?
>>
>> Alex
>>
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