[vtkusers] GCC 4.5 Mac Os X

[Brickle Macho]

I start with a clean empty build tree.  Since Apple do not support gcc
4.5.2 (think they have moved to clang or something) I used Mac Ports to
buld and install gcc 4.5.2.    I used gcc_select, a script that manages
all the symbolic links.   So CMake finds gcc, g++ etc in the appropriate
locations.  I get the same error with 2.8.4 as follows:

bricklemacho-imac-g5:VTK-Clean brickle$ cmake -version
cmake version 2.8.4

bricklemacho-imac-g5:VTK-Clean brickle$ cmake -G "Unix Makefiles"
/Users/brickle/development/source/VTK
-- The C compiler identification is GNU
-- The CXX compiler identification is GNU
-- Checking whether C compiler has -isysroot
-- Checking whether C compiler has -isysroot - yes
-- Checking whether C compiler supports OSX deployment target flag
-- Checking whether C compiler supports OSX deployment target flag - yes
-- Check for working C compiler: /opt/local/bin/gcc
-- Check for working C compiler: /opt/local/bin/gcc -- works
...
...
-- Check if the system is big endian
-- Searching 16 bit integer
-- Check size of unsigned short
-- Check size of unsigned short - failed
-- Check size of unsigned int
-- Check size of unsigned int - failed
-- Check size of unsigned long
-- Check size of unsigned long - failed
CMake Error at /opt/local/share/cmake-2.8/Modules/TestBigEndian.cmake:44
(MESSAGE):
  no suitable type found
Call Stack (most recent call first):
  CMake/CMakeBackwardCompatibilityC.cmake:31 (TEST_BIG_ENDIAN)
  CMakeLists.txt:428 (INCLUDE)





On 1/04/11 9:07 PM, David Cole wrote:
> Did you start with a clean/empty build tree after switching from gcc
> 4.2.1 to gcc 4.5.2?
>
> How do you tell CMake to use gcc 4.5.2? (Is it in the PATH, do you set
> CC and CXX env vars?)
>
> Does the same thing happen with CMake 2.8.4?
>
>
> On Fri, Apr 1, 2011 at 7:46 AM, Brickle Macho <bricklemacho at gmail.com
> <mailto:bricklemacho at gmail.com>> wrote:
>
>     I previously had compiled under GCC 4.2.1 but was required to
>     upgrade to
>     GCC 4.5.2 to allow PCL (Point Cloud Library) compile.  PCL has a
>     dependency on VTK for its visualizer.
>
>     I am now trying to compile VTK on MacOS 10.6.7, GCC 4.5.  Can anyone
>     help with the following error which occurs during the CMake process:
>
>     -------
>     ...
>     Check if the system is big endian
>     Searching 16 bit integer
>     Check size of unsigned short
>     Check size of unsigned short - failed
>     Check size of unsigned int
>     Check size of unsigned int - failed
>     Check size of unsigned long
>     Check size of unsigned long - failed
>     CMake Error at /Applications/CMake
>     2.8-3.app/Contents/share/cmake-2.8/Modules/TestBigEndian.cmake:44
>     (MESSAGE):
>      no suitable type found
>     Call Stack (most recent call first):
>      CMake/CMakeBackwardCompatibilityC.cmake:31 (TEST_BIG_ENDIAN)
>      CMakeLists.txt:428 (INCLUDE)
>
>
>     Configuring incomplete, errors occurred!
>     -------
>
>
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