Squashed 'third_party/ceres/' content from commit e51e9b4
Change-Id: I763587619d57e594d3fa158dc3a7fe0b89a1743b
git-subtree-dir: third_party/ceres
git-subtree-split: e51e9b46f6ca88ab8b2266d0e362771db6d98067
diff --git a/cmake/AppendTargetProperty.cmake b/cmake/AppendTargetProperty.cmake
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+# Ceres Solver - A fast non-linear least squares minimizer
+# Copyright 2015 Google Inc. All rights reserved.
+# http://ceres-solver.org/
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice,
+# this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright notice,
+# this list of conditions and the following disclaimer in the documentation
+# and/or other materials provided with the distribution.
+# * Neither the name of Google Inc. nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+# Author: alexs.mac@gmail.com (Alex Stewart)
+
+# Append item(s) to a property on a declared CMake target:
+#
+# append_target_property(target property item_to_append1
+# [... item_to_appendN])
+#
+# The set_target_properties() CMake function will overwrite the contents of the
+# specified target property. This function instead appends to it, so can
+# be called multiple times with the same target & property to iteratively
+# populate it.
+function(append_target_property TARGET PROPERTY)
+ if (NOT TARGET ${TARGET})
+ message(FATAL_ERROR "Invalid target: ${TARGET} cannot append: ${ARGN} "
+ "to property: ${PROPERTY}")
+ endif()
+ if (NOT PROPERTY)
+ message(FATAL_ERROR "Invalid property to update for target: ${TARGET}")
+ endif()
+ # Get the initial state of the specified property for the target s/t
+ # we can append to it (not overwrite it).
+ get_target_property(INITIAL_PROPERTY_STATE ${TARGET} ${PROPERTY})
+ if (NOT INITIAL_PROPERTY_STATE)
+ # Ensure that if the state is unset, we do not insert the XXX-NOTFOUND
+ # returned by CMake into the property.
+ set(INITIAL_PROPERTY_STATE "")
+ endif()
+ # Delistify (remove ; separators) the potentially set of items to append
+ # to the specified target property.
+ string(REPLACE ";" " " ITEMS_TO_APPEND "${ARGN}")
+ set_target_properties(${TARGET} PROPERTIES ${PROPERTY}
+ "${INITIAL_PROPERTY_STATE} ${ITEMS_TO_APPEND}")
+endfunction()