Hi People,
Due to some project specific constrains, I need to use cmake within cygwin
but to compile using Visual C++ via nmake.
Since the cygwin cmake doesn't support nmake I must use the windows cmake
binary, but naturally knowing that I am running under cygwin.
I couldn't find any preset variable that could tell me this, so I'm using
the follow code to that effect:
if ( WIN32 )
find_program(CMAKE_UNAME uname /bin /usr/bin /usr/local/bin )
if(CMAKE_UNAME)
exec_program(uname ARGS -s OUTPUT_VARIABLE CMAKE_SYSTEM_NAME2)
if ( CMAKE_SYSTEM_NAME2 MATCHES "CYGWIN" )
message( STATUS "This is the Windows CMake running within the cygwin
platform." )
set( WIN32_CMAKE_ON_CYGWIN TRUE CACHE INTERNAL "This is the cygwin
platform." )
endif()
endif()
endif()
Any crictisim is more than welcome at this point :)
I needed this new WIN32_CMAKE_ON_CYGWIN variable to correctly handle
installation within the cygwin hierarchy.
The follwing code:
if ( WIN32_CMAKE_ON_CYGWIN )
exec_program(cygpath ARGS -w ${CMAKE_INSTALL_PREFIX} OUTPUT_VARIABLE
CMAKE_INSTALL_PREFIX2 )
file ( TO_CMAKE_PATH ${CMAKE_INSTALL_PREFIX2} CMAKE_INSTALL_PREFIX )
endif()
Allows my users to set the install prefix either
as -DCMAKE_INSTALL_PREFIX=/usr/local
or -DCMAKE_INSTALL_PREFIX=C:\MyLibraries\ProjectXYZ.
(NOTE: In Vista the default %PROGRAMFILES% prefix doesn't really work
because of access restrictions which I couldn't get cygwin it to have.)
FYI, that transformation turns "/usr/local" into "C:/cygwin/usr/local",
which I found to be needed by the windows cmake binary as it uses low-level
FILE( INSTALL ) commands to do the actual installation when "nmake install"
is executed.
Best
--
Fernando Cacciola
SciSoft
http://fcacciola.50webs.com
http://groups.google.com/group/cppba
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