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Append standard variables to project after finding package

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Normally a package returns a set of standard variables such as
Xxx_INCLUDE_DIRS. Adding this to a list that is collected for the
project amounts to a bunch of boilerplate which can rather be
encapsulated in a macro.
This commit is contained in:
Roland Kaufmann 2012-11-28 10:36:27 +01:00
parent 644fc9f5cf
commit 4dd3f9ec96
1 changed files with 62 additions and 0 deletions
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62
cmake/Modules/UseOpmFind.cmake Normal file
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# - Generic inclusion of packages
#
# Synopsis:
#
# find_and_append (name args)
#
# where
#
# name Name of the package, e.g. Boost
# args Other arguments, e.g. COMPONENTS, REQUIRED, QUIET etc.
#
# This macro will append the list of standard variables found by the
# package to this project's standard variables
#
########################################################################
#
# - Remove duplicate library declarations
#
# Synopsis:
#
# remove_duplicate_libraries (module)
#
# where
# module Name of the module whose libraries should be pruned
# list of suffixes for all the project variables
set (_opm_proj_vars
LINKER_FLAGS
LIBRARIES
DEFINITIONS
INCLUDE_DIRS
CONFIG_VARS
)
# ensure that they are at least the empty list after we're done
foreach (name IN LISTS _opm_proj_vars)
if (NOT DEFINED ${CMAKE_PROJECT_NAME}_${name})
set (${CMAKE_PROJECT_NAME}_${name} "")
endif (NOT DEFINED ${CMAKE_PROJECT_NAME}_${name})
endforeach (name)
# insert this boilerplate whenever we are going to find a new package
macro (find_and_append_package name)
find_package (${name} ${ARGN})
if (${name}_FOUND)
foreach (var IN LISTS _opm_proj_vars)
if (DEFINED ${name}_${var})
list (APPEND ${CMAKE_PROJECT_NAME}_${var} ${${name}_${var}})
endif (DEFINED ${name}_${var})
endforeach (var)
endif (${name}_FOUND)
endmacro (find_and_append_package name)
# libraries should always be trimmed from the beginning, so that also
# missing functions in those later in the list will be resolved
macro (remove_duplicate_libraries module)
if (DEFINED ${module}_LIBRARIES)
list (REVERSE ${module}_LIBRARIES)
list (REMOVE_DUPLICATES ${module}_LIBRARIES)
list (REVERSE ${module}_LIBRARIES)
endif (DEFINED ${module}_LIBRARIES)
endmacro (remove_duplicate_libraries module)