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More user friendly (built tree is automatically used).

This commit is contained in:
Sebastien Barre 2002-01-07 17:29:06 -05:00
parent e58632aed3
commit 449564a8e5
1 changed files with 48 additions and 66 deletions
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112
Modules/FindVTK.cmake
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@ -3,15 +3,17 @@
# #
# This module defines: # This module defines:
# #
# VTK_INSTALL_PATH - where is the installed version of VTK. # VTK_INSTALL_PATH - Where is the installed version of VTK.
# USE_BUILT_VTK - should a built-from-source version of VTK be used # USE_BUILT_VTK - Should a built-from-source version of VTK be used.
# #
# VTK_BINARY_PATH - where is (one of) the binary tree(s). # VTK_BINARY_PATH - Where is (one of) the binary tree(s).
# USE_INSTALLED_VTK - should an installed version of VTK be used # USE_INSTALLED_VTK - Should an installed version of VTK be used
# #
# USE_VTK_FILE - the full path and location of the UseVTK.cmake file # USE_VTK_FILE - (internal)
# ONLY SET if ONE of the USE_BUILT_VTK or # Full path and location to the UseVTK.cmake file.
# USE_INSTALLED_VTK is set to ON. # This value changes each time USE_BUILT_VTK or
# USE_INSTALLED_VTK is modified, and only if ONE of
# these setting is set to ON.
# #
# #
@ -36,6 +38,15 @@ FIND_PATH(VTK_BINARY_PATH UseVTK.cmake
$ENV{HOME}/vtkbin $ENV{HOME}/vtkbin
) )
#
# If we found a built tree, USE_BUILT_VTK allows the user to
# use it or not. Defaults to ON.
#
IF (VTK_BINARY_PATH)
SET (USE_BUILT_VTK 1 CACHE BOOL
"Use a built (versus installed) version of VTK. Be sure that VTK_BINARY_PATH is correct.")
ENDIF (VTK_BINARY_PATH)
# #
# Look for an installed tree # Look for an installed tree
# #
@ -49,92 +60,63 @@ FIND_PATH(VTK_INSTALL_PATH include/vtk/UseVTK.cmake
[HKEY_LOCAL_MACHINE\\SOFTWARE\\Kitware\\VTK\\40] [HKEY_LOCAL_MACHINE\\SOFTWARE\\Kitware\\VTK\\40]
) )
#
# If we found a built tree, USE_BUILT_VTK allows the user to
# use it or not.
#
# Important: it *has* to be set to OFF first in order to allow
# the user to change the VTK_BINARY_PATH value *before* the USE_VTK_FILE
# is set (and the cache created).
#
# For example, CMake could have picked-up the wrong VTK binary path, and if
# the related VTK cache was immediately loaded there would not be any way
# to overwrite these cache values (even by changing the binary path or
# USE_VTK_FILE).
#
IF (VTK_BINARY_PATH)
SET (USE_BUILT_VTK 0 CACHE BOOL
"Use a built (versus installed) version of VTK. Be sure VTK_BINARY_PATH is correct before setting it to ON.")
ENDIF (VTK_BINARY_PATH)
# #
# If we found an installed tree, USE_INSTALLED_VTK allows the user to # If we found an installed tree, USE_INSTALLED_VTK allows the user to
# use it or not. # use it or not.
# #
# Important: it *has* to be set to OFF first in order to allow # Defaults to OFF if a built tree was found before (see above), ON otherwise.
# the user to change the VTK_INSTALL_PATH value before the USE_VTK_FILE
# is set (and the cache created).
#
# For example, you might have simultaneously installed different major
# versions like VTK 3.2, 4.0, 5.1, etc.
#
# Moreover, USE_INSTALLED_VTK has to be OFF since USE_BUILT_VTK has to be OFF
# too (see above). If USE_INSTALLED_VTK was ON by default, then USE_VTK_FILE
# would be set immediately (since one of them is ON) in favor of the
# installed tree.
# #
IF (VTK_INSTALL_PATH) IF (VTK_INSTALL_PATH)
IF (USE_BUILT_VTK)
SET (USE_INSTALLED_VTK 0 CACHE BOOL SET (USE_INSTALLED_VTK 0 CACHE BOOL
"Use an installed (versus built from source) version of VTK. Be sure VTK_INSTALL_PATH is correct before setting it to ON.") "Use an installed (versus built from source) version of VTK. Be sure that VTK_INSTALL_PATH is correct.")
ELSE (USE_BUILT_VTK)
SET (USE_INSTALLED_VTK 1 CACHE BOOL
"Use an installed (versus built from source) version of VTK. Be sure that VTK_INSTALL_PATH is correct.")
ENDIF (USE_BUILT_VTK)
ENDIF (VTK_INSTALL_PATH) ENDIF (VTK_INSTALL_PATH)
# #
# Set the USE_VTK_FILE only if one of USE_BUILT_VTK or USE_INSTALLED_VTK # Set the USE_VTK_FILE only if one of USE_BUILT_VTK or USE_INSTALLED_VTK
# is ON, i.e. if the user has decided if he wants to use either the built # is ON.
# or the installed VTK. Even if only one of the VTK flavor was found,
# this also enable the user to change the path to his VTK (in case the
# wrong installed or built VTK was automatically found).
#
# Once this decision has been made, there is no way to go back except by
# erasing the cache. Mark these useless vars as ADVANCED to reflect this.
# #
IF (USE_BUILT_VTK) IF (USE_BUILT_VTK)
IF (NOT USE_INSTALLED_VTK) IF (NOT USE_INSTALLED_VTK)
FIND_FILE(USE_VTK_FILE UseVTK.cmake ${VTK_BINARY_PATH}) IF (EXISTS "${VTK_BINARY_PATH}/UseVTK.cmake")
MARK_AS_ADVANCED( SET (USE_VTK_FILE "${VTK_BINARY_PATH}/UseVTK.cmake")
USE_BUILT_VTK ENDIF (EXISTS "${VTK_BINARY_PATH}/UseVTK.cmake")
USE_INSTALLED_VTK
USE_VTK_FILE
VTK_INSTALL_PATH
)
ENDIF (NOT USE_INSTALLED_VTK) ENDIF (NOT USE_INSTALLED_VTK)
ELSE (USE_BUILT_VTK) ELSE (USE_BUILT_VTK)
IF (USE_INSTALLED_VTK) IF (USE_INSTALLED_VTK)
SET (USE_VTK_FILE ${VTK_INSTALL_PATH}/include/vtk/UseVTK.cmake) IF (EXISTS "${VTK_INSTALL_PATH}/include/vtk/UseVTK.cmake")
MARK_AS_ADVANCED( SET (USE_VTK_FILE "${VTK_INSTALL_PATH}/include/vtk/UseVTK.cmake")
USE_BUILT_VTK ENDIF (EXISTS "${VTK_INSTALL_PATH}/include/vtk/UseVTK.cmake")
USE_INSTALLED_VTK
USE_VTK_FILE
VTK_BINARY_PATH
)
ENDIF (USE_INSTALLED_VTK) ENDIF (USE_INSTALLED_VTK)
ENDIF (USE_BUILT_VTK) ENDIF (USE_BUILT_VTK)
#
# Display a warning if both settings are set to ON.
# Otherwise display a warning if VTK was not found.
#
IF (USE_BUILT_VTK AND USE_INSTALLED_VTK)
MESSAGE ("Warning. Please make sure that only ONE of the USE_INSTALLED_VTK or USE_BUILT_VTK setting is set to ON.")
ELSE (USE_BUILT_VTK AND USE_INSTALLED_VTK)
IF (NOT USE_VTK_FILE)
MESSAGE ("Warning. VTK might be found on your system as different flavours: installed VTK or built VTK. Please make sure that the VTK_INSTALL_PATH or VTK_BINARY_PATH setting reflects which VTK you are planning to use, then set ONE of the USE_INSTALLED_VTK or USE_BUILT_VTK setting to ON.")
ENDIF (NOT USE_VTK_FILE)
ENDIF (USE_BUILT_VTK AND USE_INSTALLED_VTK)
# Note: # Note:
# #
# If you use that module then you are probably relying on VTK to be found # If you use that module then you are probably relying on VTK to be found
# on your system. As said before, it might be found as different flavours: # on your system. Here is the CMake code you might probably want to use to
# installed VTK, or (multiple) built VTK. Moreover, even if it is found # work hand-in-hand with that module (in that example CAN_BUILD is a var
# automatically, CMake might have picked the wrong path/version. # that is set to 0 if your project can not be build):
#
# Here is the CMake code you might probably want to use to work hand-in-hand
# with that module:
# #
# INCLUDE (${CMAKE_ROOT}/Modules/FindVTK.cmake) # INCLUDE (${CMAKE_ROOT}/Modules/FindVTK.cmake)
# #
# IF (USE_VTK_FILE) # IF (USE_VTK_FILE)
# INCLUDE (${USE_VTK_FILE}) # INCLUDE (${USE_VTK_FILE})
# ELSE (USE_VTK_FILE) # ELSE (USE_VTK_FILE)
# MESSAGE("Warning. This project is supposed to work with VTK, which might be found on your system as different flavours: installed VTK, or (multiple) built VTK. Please, make sure that the VTK_INSTALL_PATH or VTK_BINARY_PATH setting reflect which VTK you are planning to use, then set one of the USE_INSTALLED_VTK or USE_BUILT_VTK to ON.")
# SET (CAN_BUILD 0) # SET (CAN_BUILD 0)
# ENDIF (USE_VTK_FILE) # ENDIF (USE_VTK_FILE)