[CMake] Turning on warnings when compiling.

[Andrew Maclean]

I do something like this (I think it was taken from the VTK CmakeLists.txtfile):

#-----------------------------------------------------------------------------
# Let's use the highest warning level.
#-----------------------------------------------------------------------------
IF(CMAKE_BUILD_TOOL MATCHES "(msdev|devenv|nmake)")
  # Use the highest warning level for visual studio.
  IF(CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
    STRING(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_CXX_FLAGS
"${CMAKE_CXX_FLAGS}")
  ELSE(CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4")
  ENDIF(CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
  IF(CMAKE_C_FLAGS MATCHES "/W[0-4]")
    STRING(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
  ELSE(CMAKE_C_FLAGS MATCHES "/W[0-4]")
    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W4")
  ENDIF(CMAKE_C_FLAGS MATCHES "/W[0-4]")
  # Disable deprecation warnings for standard C functions in VS2005 and
later
  IF(CMAKE_COMPILER_2005)
    ADD_DEFINITIONS(-D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE)
  ENDIF(CMAKE_COMPILER_2005)
ENDIF(CMAKE_BUILD_TOOL MATCHES "(msdev|devenv|nmake)")
IF(CMAKE_BUILD_TOOL MATCHES "make")
  IF(NOT CMAKE_CXX_FLAGS MATCHES "-Wall")
    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
  ENDIF(NOT CMAKE_CXX_FLAGS MATCHES "-Wall")
  IF(NOT CMAKE_C_FLAGS MATCHES "-Wall")
    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall")
  ENDIF(NOT CMAKE_C_FLAGS MATCHES "-Wall")
ENDIF(CMAKE_BUILD_TOOL MATCHES "make")


Andrew




On 8/28/07, Michael Wagner <michael.wagner at pluto.uni-freiburg.de> wrote:
>
> Hi,
>
> Whenever I'm compiling, there are no warnings shown.
> Is there a command or variable that can be used to turn on warnings?
>
> When searching the wiki, the only information I found was this page:
> http://www.cmake.org/Wiki/CMake_Platform_Dependent_Issues
> which tells me the right flags for all the different compilers. That is
> wonderfull, I just need to know how to turn that stuff on!
>
> Maybe somebody out there knows how to turn on warnings. (Hopefully you
> are not all fearless coders that laugh in the face of warnings... ;-)
>
> cheers,
>
> Michael
> _______________________________________________
> CMake mailing list
> CMake at cmake.org
> http://www.cmake.org/mailman/listinfo/cmake
>



-- 
___________________________________________
Andrew J. P. Maclean
Centre for Autonomous Systems
The Rose Street Building J04
The University of Sydney  2006  NSW
AUSTRALIA
Ph: +61 2 9351 3283
Fax: +61 2 9351 7474
URL: http://www.acfr.usyd.edu.au/
___________________________________________
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