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| author | Johnathan Corgan <johnathan@corganlabs.com> | 2017-09-22 14:42:05 -0700 |
|---|---|---|
| committer | Johnathan Corgan <johnathan@corganlabs.com> | 2017-09-22 14:42:05 -0700 |
| commit | 7ec1818405e6808c29f1740ecc37d8c53d90afc5 (patch) | |
| tree | 47e5cea19872989e8396a0030b75934bd316eb71 /cmake | |
| parent | d7e875ae67c99eaa26ccb92f8c3a802690694356 (diff) | |
| parent | 4ce146b798771847c1dd955b2ab449a6a4d1ddbf (diff) | |
Merge remote-tracking branch 'github/pr/1447' into maint
Diffstat (limited to 'cmake')
| -rw-r--r-- | cmake/Modules/CMakeOverloads.cmake | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/cmake/Modules/CMakeOverloads.cmake b/cmake/Modules/CMakeOverloads.cmake new file mode 100644 index 0000000000..450d44c95a --- /dev/null +++ b/cmake/Modules/CMakeOverloads.cmake @@ -0,0 +1,69 @@ +# Copyright 2017 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. + +######################################################################## +# This file contains functions that override those provided by CMake. +# We do this to allow for more generic use of these functions than as +# provided by CMake. +######################################################################## + +if(DEFINED __INCLUDED_CMAKE_OVERLOADS) + return() +endif() +set(__INCLUDED_CMAKE_OVERLOADS TRUE) + +# overload INCLUDE_DIRECTORIES to be a little smarter +# +# NOTE: moving all include directories to either BEFORE (internal to +# source or build) or AFTER (external to source or build) will work in +# general. The primary time it could fail is when include ordering is +# required to find a specific version of a header when multiple of the +# same name are available in the various include directories. This +# situation seems like it's unlikely, so we ignore it here. + +macro(INCLUDE_DIRECTORIES) + # for each provided include directory ... + foreach(inc_dir ${ARGN}) + + # is this dir the literal string "BEFORE" or "AFTER"? + string(FIND ${inc_dir} BEFORE IS_BEFORE) + string(FIND ${inc_dir} AFTER IS_AFTER) + if(NOT ${IS_BEFORE} EQUAL 0 AND NOT ${IS_AFTER} EQUAL 0) + + # not "BEFORE" or "AFTER"; a real directory. + # get absolute path of this include directory + get_filename_component(inc_dir_abs ${inc_dir} ABSOLUTE) + + # is this include directory located within the SOURCE or BUILD? + string(FIND ${inc_dir_abs} ${CMAKE_SOURCE_DIR} IS_IN_SOURCE) + string(FIND ${inc_dir_abs} ${CMAKE_BINARY_DIR} IS_IN_BINARY) + if(${IS_IN_SOURCE} EQUAL 0 OR ${IS_IN_BINARY} EQUAL 0) + # yes: local SOURCE or BINARY; internal. + # call the overloaded INCLUDE_DIRECTORIES, + # prepending this internal directory. + _include_directories(BEFORE ${inc_dir_abs}) + else() + # no: not SOURCE or BUILD; must be external. + # call the overloaded INCLUDE_DIRECTORIES, + # appending this external directory. + _include_directories(AFTER ${inc_dir_abs}) + endif() + endif() + endforeach() +endmacro(INCLUDE_DIRECTORIES) |