[CMake] CMake-2.6 CMAKE_TOOLCHAIN_FILE

[Alexander Neundorf]

Hi Andreas,

On Wednesday 14 May 2008, you wrote:
> Hi,
> Thank you for all these hints. Are details like that described in the
> Mastering CMake book?


Yes and no.
The process how the system and the compiler are determined is described, but 
not every implementation detail of the files.

> I tracked it down to:
> CMakeDetermineCCompiler.cmake: line 97:
> IF (NOT _CMAKE_TOOLCHAIN_PREFIX)
>   GET_FILENAME_COMPONENT(COMPILER_BASENAME "${CMAKE_C_COMPILER}" NAME_WE)
>   MESSAGE(STATUS "CMAKE_C_COMPILER: ${CMAKE_C_COMPILER}")
>   MESSAGE(STATUS "COMPILER_BASENAME: ${COMPILER_BASENAME}")
>   IF (COMPILER_BASENAME MATCHES "^(.+-)g?cc")
>     STRING(REGEX REPLACE "^(.+-)g?cc"  "\\1" _CMAKE_TOOLCHAIN_PREFIX
> "${COMPILER _BASENAME}")
>   ENDIF (COMPILER_BASENAME MATCHES "^(.+-)g?cc")
> ENDIF (NOT _CMAKE_TOOLCHAIN_PREFIX)
>
> MESSAGE(STATUS "TOOLCHAIN: ${_CMAKE_TOOLCHAIN_PREFIX}")
>
>
> It prints
> CMAKE_C_COMPILER:
> c:/work/QNX632/host/win32/x86/usr/bin/arm-unknown-nto-qnx6.3.0-gcc.exe
> COMPILER_BASENAME: arm-unknown-nto-qnx6
> TOOLCHAIN:
>
> Seems like get_filename_component takes the first dot to determine the
> extension!

Yes, it does.

Anyway, does the attached patch (against cvs HEAD) work for you ?

Alex
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