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# This file is executed via install(SCRIPT).
# This means it is include()d into the cmake_install.cmake file
# Due to this the following variables already have the correct value:
# CMAKE_INSTALL_PREFIX
# CMAKE_CURRENT_BINARY_DIR
#
# Additionally the following two variables have to be set:
# EXPORT_INSTALL_DIR - set it to the install destination
# EXPORT_FILES - the filenames of the exports file
#
# Alex
# put all the code into a function so all variables used here are local
# which makes sure including this file multiple times in a cmake_install.cmake works
function(CHECK_INSTALLED_EXPORTS_FILE _filename)
# get the absolute install directory, consider absolute and relative paths and also DESTDIR
if(IS_ABSOLUTE "${EXPORT_INSTALL_DIR}")
set(installDir "$ENV{DESTDIR}${EXPORT_INSTALL_DIR}")
else()
set(installDir "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/${EXPORT_INSTALL_DIR}")
endif()
set(installedExportsFile "${installDir}/${_filename}")
#message(STATUS "************ bin dir: ${CMAKE_CURRENT_BINARY_DIR}")
#message(STATUS "************ prefix: ${CMAKE_INSTALL_PREFIX}")
#message(STATUS "************ exportsfile: ${installedExportsFile}")
# if the file already exists at the install location, and if we can
# find the exports file in the build dir, read both, and if their contents differ,
# remove all configuration-specific exports files from the install dir, since
# they may create conflicts if the new targets have been added/targets have been
# removed/ targets have been renamed/ the namespace for the exported targets has changed
if(EXISTS "${installedExportsFile}")
if (${EXPORT_INSTALL_DIR} MATCHES "^(/)(.+)$")
set(binaryDirExportFileDir "_${CMAKE_MATCH_2}")
set(binaryDirExportsFile "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/Export/${binaryDirExportFileDir}/${_filename}")
else (${EXPORT_INSTALL_DIR} MATCHES "^(/)(.+)$")
set(binaryDirExportsFile "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/Export/${EXPORT_INSTALL_DIR}/${_filename}")
endif (${EXPORT_INSTALL_DIR} MATCHES "^(/)(.+)$")
# message(STATUS "************* binaryDirExportsFile: ${binaryDirExportsFile}")
if(EXISTS "${binaryDirExportsFile}")
file(READ "${installedExportsFile}" installedExportsFileContents)
file(READ "${binaryDirExportsFile}" binaryDirExportsFileContents)
if(NOT "${installedExportsFileContents}" STREQUAL "${binaryDirExportsFileContents}")
if("${_filename}" MATCHES "^(.+)(\\.cmake)$")
message(STATUS "XXX Installed and new ${_filename} differ, removing installed ${CMAKE_MATCH_1}-*.cmake files")
file(GLOB exportFiles "${installDir}/${CMAKE_MATCH_1}-*.cmake")
# message(STATUS "XXX files: ${exportFiles}")
file(REMOVE ${exportFiles})
endif()
else()
# message(STATUS "XXX FILES ${_filename} are the same")
endif()
endif()
endif()
endfunction(CHECK_INSTALLED_EXPORTS_FILE)
# call the function for each exports file
foreach(_currentExportsFile ${EXPORT_FILES})
check_installed_exports_file("${_currentExportsFile}")
endforeach(_currentExportsFile ${EXPORT_FILES})
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