[CMake] CMake-2.6 CMAKE_TOOLCHAIN_FILE

[Andreas Pokorny]

Hello,
I currently try to replace my cmake-2.4 cross compile workarounds with
proper cmake-2.6 toolchain files.
The first one I tried was my ARM QNX Neutrino 6.3 file:

########################
SET(CMAKE_SYSTEM_NAME QNX)
SET(CMAKE_SYSTEM_VERSION 6.3)

SET(QNX_TARGET $ENV{QNX_TARGET} CACHE PATH "Path to QNX Target env")
SET(QNX_HOST $ENV{QNX_HOST} CACHE PATH "Path to QNX host tool chain")

## This one looks ugly -- the env vars above have to be correct unix
paths, that means on cygwin
## we need to set /cygdrive/c/work/qnx/, otherwise gcc will not find
any headers or libraries or
## even "ld".
## When executing the Native Win32 CMake then the cygwin path will not
work for cmake, i believe.
## Hence we try to replace /cygdrive with a Windows drive letter...
STRING(REGEX REPLACE "/cygdrive/\(.\)" "\\1:" QNX_HOST_WIN_PATH ${QNX_HOST})
STRING(REGEX REPLACE "/cygdrive/\(.\)" "\\1:" QNX_TARGET_WIN_PATH ${QNX_HOST})

MESSAGE(STATUS "Compiling for QNX 6.3 ARM")

SET(CMAKE_CXX_COMPILER
"${QNX_HOST_WIN_PATH}/usr/bin/arm-unknown-nto-qnx6.3.0-gcc.exe")
SET(CMAKE_C_COMPILER
"${QNX_HOST_WIN_PATH}/usr/bin/arm-unknown-nto-qnx6.3.0-gcc.exe")
SET(CMAKE_AR "${QNX_HOST_WIN_PATH}/usr/bin/arm-unknown-nto-qnx6.3.0-ar.exe")
SET(CMAKE_RANLIB
"${QNX_HOST_WIN_PATH}/usr/bin/arm-unknown-nto-qnx6.3.0-ranlib.exe")

SET(CMAKE_FIND_ROOT_PATH ${QNX_HOST_WIN_PATH} ${QNX_TARGET_WIN_PATH})
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
######################## EOF

Now when running with the "Unix Makefile" generator the CMAKE_AR seems
to be empty or undefined.
The shell complains that "cr" cannot be found, cr as in <CMAKE_AR> cr
LIB OBJECTS.

Any ideas what is wrong here?

kind regards
Andreas Pokorny