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ENH: Adding FIND_AND_IMPORT_CMAKE_PROJECT macro.

This commit is contained in:
Brad King 2003-01-17 17:19:23 -05:00
parent cbda98b151
commit 94a8d00199
1 changed files with 76 additions and 0 deletions
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Modules/FindAndImportCMakeProject.cmake Normal file
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# FIND_AND_IMPORT_CMAKE_PROJECT can be used by projects to find other
# CMake projects.
#
# For example, the author of library FOO would include a file called
# FOOConfig.cmake in the project's distribution. Usually such a file
# would be configured and installed by FOO's CMake code into a
# directory such as PREFIX/lib/foo.
#
# The author of application BAR that uses FOO would include the
# following lines in BAR's CMake code:
#
# INCLUDE("${CMAKE_ROOT}/Modules/FindAndImportCMakeProject.cmake")
# FIND_AND_IMPORT_CMAKE_PROJECT(FOO_DIR FOOConfig.cmake lib/foo)
#
# When CMake is run to build BAR, FOO_DIR will be the only
# CMakeCache.txt entry that is needed for FOO. When FOO_DIR has been
# set correctly, FOOConfig.cmake will automatically be included to
# provide whatever settings are needed to use FOO.
#
MACRO(FIND_AND_IMPORT_CMAKE_PROJECT dir_var config_file rel_path)
IF(NOT ${dir_var})
# Get the system search path as a list.
IF(UNIX)
STRING(REGEX MATCHALL "[^:]+" ${dir_var}_SEARCH1 "$ENV{PATH}")
ELSE(UNIX)
STRING(REGEX REPLACE "\\\\" "/" ${dir_var}_SEARCH1 "$ENV{PATH}")
ENDIF(UNIX)
STRING(REGEX REPLACE "/;" ";" ${dir_var}_SEARCH2 "${${dir_var}_SEARCH1}")
# Construct a set of paths relative to the system search path.
SET(${dir_var}_SEARCH ${${dir_var}_SEARCH_PATH})
FOREACH(dir ${${dir_var}_SEARCH2})
SET(${dir_var}_SEARCH ${${dir_var}_SEARCH} "${dir}/../${rel_path}")
ENDFOREACH(dir)
# Look for the configuration file.
FIND_PATH(${dir_var} ${config_file}
# Search user paths and relative to system search path.
${${dir_var}_SEARCH}
# Look in standard UNIX install locations.
"/usr/local/${rel_path}"
"/usr/${rel_path}"
# Read from the CMakeSetup registry entries. It is likely that
# the project will have been recently built.
"[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild1]"
"[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild2]"
"[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild3]"
"[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild4]"
"[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild5]"
"[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild6]"
"[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild7]"
"[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild8]"
"[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild9]"
"[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild10]"
# Help the user find it if we cannot.
DOC "The directory containing ${config_file}."
)
ENDIF(NOT ${dir_var})
# If the configuration file was found, load it.
IF(${dir_var})
IF(EXISTS "${${dir_var}}/${config_file}")
# We found the configuration file. Load the settings from it.
INCLUDE("${${dir_var}}/${config_file}")
ELSE(EXISTS "${${dir_var}}/${config_file}")
IF(NOT ${dir_var}_NO_COMPLAIN)
MESSAGE(SEND_ERROR "${dir_var} has been set to a directory "
"that does not contain ${config_file}.")
ENDIF(NOT ${dir_var}_NO_COMPLAIN)
ENDIF(EXISTS "${${dir_var}}/${config_file}")
ENDIF(${dir_var})
ENDMACRO(FIND_AND_IMPORT_CMAKE_PROJECT)