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Description: Add FindPROJ4.cmake.
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Origin: https://salsa.debian.org/debian/openorienteering-mapper/raw/debian/0.8.4-1/cmake/FindPROJ4.cmake
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--- /dev/null
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+++ b/cmake/Modules/FindPROJ4.cmake
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@@ -0,0 +1,152 @@
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+#.rst:
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+# FindPROJ4
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+# --------
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+#
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+# Find the proj includes and library.
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+#
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+# IMPORTED Targets
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+# ^^^^^^^^^^^^^^^^
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+#
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+# This module defines :prop_tgt:`IMPORTED` target ``PROJ4::proj``,
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+# if Proj.4 has been found.
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+#
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+# Result Variables
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+# ^^^^^^^^^^^^^^^^
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+#
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+# This module defines the following variables:
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+#
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+# ::
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+#
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+# PROJ4_INCLUDE_DIRS - where to find proj_api.h, etc.
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+# PROJ4_LIBRARIES - List of libraries when using libproj.
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+# PROJ4_FOUND - True if libproj found.
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+#
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+# ::
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+#
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+# PROJ4_VERSION - The version of libproj found (x.y.z)
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+# PROJ4_VERSION_MAJOR - The major version of libproj
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+# PROJ4_VERSION_MINOR - The minor version of libproj
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+# PROJ4_VERSION_PATCH - The patch version of libproj
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+# PROJ4_VERSION_TWEAK - always 0
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+# PROJ4_VERSION_COUNT - The number of version components, always 3
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+#
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+# Hints
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+# ^^^^^
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+#
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+# A user may set ``PROJ4_ROOT`` to a libproj installation root to tell this
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+# module where to look exclusively.
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+
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+#=============================================================================
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+# Copyright 2016 Kai Pastor
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+#
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+#
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+# This file was derived from CMake 3.5's module FindZLIB.cmake
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+# which has the following terms:
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+#
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+# Copyright 2001-2011 Kitware, Inc.
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+#
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+# Redistribution and use in source and binary forms, with or without
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+# modification, are permitted provided that the following conditions are
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+# met:
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+#
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+# * Redistributions of source code must retain the above copyright notice,
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+# this list of conditions and the following disclaimer.
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+#
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+# * Redistributions in binary form must reproduce the above copyright notice,
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+# this list of conditions and the following disclaimer in the documentation
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+# and/or other materials provided with the distribution.
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+#
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+# * The names of Kitware, Inc., the Insight Consortium, or the names of
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+# any consortium members, or of any contributors, may not be used to
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+# endorse or promote products derived from this software without
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+# specific prior written permission.
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+#
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+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS ``AS IS''
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+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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+# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
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+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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+#=============================================================================
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+
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+# Search PROJ4_ROOT exclusively if it is set.
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+if(PROJ4_ROOT)
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+ set(_PROJ4_SEARCH PATHS ${PROJ4_ROOT} NO_DEFAULT_PATH)
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+else()
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+ set(_PROJ4_SEARCH)
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+endif()
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+
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+find_path(PROJ4_INCLUDE_DIR NAMES proj_api.h ${_PROJ4_SEARCH} PATH_SUFFIXES include)
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+mark_as_advanced(PROJ4_INCLUDE_DIR)
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+
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+if(PROJ4_INCLUDE_DIR AND EXISTS "${PROJ4_INCLUDE_DIR}/proj_api.h")
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+ file(STRINGS "${PROJ4_INCLUDE_DIR}/proj_api.h" PROJ4_H REGEX "^#define PJ_VERSION [0-9]+$")
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+
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+ string(REGEX REPLACE "^.*PJ_VERSION ([0-9]).*$" "\\1" PROJ4_VERSION_MAJOR "${PROJ4_H}")
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+ string(REGEX REPLACE "^.*PJ_VERSION [0-9]([0-9]).*$" "\\1" PROJ4_VERSION_MINOR "${PROJ4_H}")
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+ string(REGEX REPLACE "^.*PJ_VERSION [0-9][0-9]([0-9]).*$" "\\1" PROJ4_VERSION_PATCH "${PROJ4_H}")
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+ set(PROJ4_VERSION "${PROJ4_VERSION_MAJOR}.${PROJ4_VERSION_MINOR}.${PROJ4_VERSION_PATCH}")
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+ set(PROJ4_VERSION_COUNT 3)
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+endif()
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+
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+# Allow PROJ4_LIBRARY to be set manually, as the location of the proj library
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+if(NOT PROJ4_LIBRARY)
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+ set(PROJ4_NAMES proj)
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+ set(PROJ4_NAMES_DEBUG projd)
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+ if(WIN32 AND DEFINED PROJ4_VERSION_MAJOR AND DEFINED PROJ4_VERSION_MINOR)
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+ list(APPEND PROJ4_NAMES proj_${PROJ4_VERSION_MAJOR}_${PROJ4_VERSION_MINOR})
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+ list(APPEND PROJ4_NAMES projd_${PROJ4_VERSION_MAJOR}_${PROJ4_VERSION_MINOR})
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+ endif()
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+ find_library(PROJ4_LIBRARY_RELEASE NAMES ${PROJ4_NAMES} ${_PROJ4_SEARCH} PATH_SUFFIXES lib)
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+ find_library(PROJ4_LIBRARY_DEBUG NAMES ${PROJ4_NAMES_DEBUG} ${_PROJ4_SEARCH} PATH_SUFFIXES lib)
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+ include(SelectLibraryConfigurations)
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+ select_library_configurations(PROJ4)
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+endif()
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+
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+# handle the QUIETLY and REQUIRED arguments and set PROJ4_FOUND to TRUE if
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+# all listed variables are TRUE
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+include(FindPackageHandleStandardArgs)
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+find_package_handle_standard_args(PROJ4
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+ REQUIRED_VARS
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+ PROJ4_LIBRARY
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+ PROJ4_INCLUDE_DIR
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+ VERSION_VAR
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+ PROJ4_VERSION
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+)
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+
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+if(PROJ4_FOUND)
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+ set(PROJ4_INCLUDE_DIRS ${PROJ4_INCLUDE_DIR})
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+
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+ if(NOT PROJ4_LIBRARIES)
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+ set(PROJ4_LIBRARIES ${PROJ4_LIBRARY})
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+ endif()
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+
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+ if(NOT TARGET PROJ4::proj)
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+ add_library(PROJ4::proj UNKNOWN IMPORTED)
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+ set_target_properties(PROJ4::proj PROPERTIES
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+ INTERFACE_INCLUDE_DIRECTORIES "${PROJ4_INCLUDE_DIRS}")
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+
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+ if(PROJ4_LIBRARY_RELEASE)
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+ set_property(TARGET PROJ4::proj APPEND PROPERTY
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+ IMPORTED_CONFIGURATIONS RELEASE)
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+ set_target_properties(PROJ4::proj PROPERTIES
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+ IMPORTED_LOCATION_RELEASE "${PROJ4_LIBRARY_RELEASE}")
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+ endif()
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+
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+ if(PROJ4_LIBRARY_DEBUG)
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+ set_property(TARGET PROJ4::proj APPEND PROPERTY
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+ IMPORTED_CONFIGURATIONS DEBUG)
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+ set_target_properties(PROJ4::proj PROPERTIES
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+ IMPORTED_LOCATION_DEBUG "${PROJ4_LIBRARY_DEBUG}")
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+ endif()
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+
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+ if(NOT PROJ4_LIBRARY_RELEASE AND NOT PROJ4_LIBRARY_DEBUG)
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+ set_property(TARGET PROJ4::proj APPEND PROPERTY
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+ IMPORTED_LOCATION "${PROJ4_LIBRARY}")
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+ endif()
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+ endif()
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+endif()
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