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Approved error messages of FindHinnantDate.cmake

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Also added a documented variable to give hints.
This commit is contained in:
Christian Dávid 2016-05-05 10:09:04 +02:00
parent f41770dbe2
commit 7097d4a325
1 changed files with 18 additions and 5 deletions
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23
cmake/Modules/FindHinnantDate.cmake
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@ -9,11 +9,14 @@
# #
# HinnantDate_FOUND - True if the system has the library # HinnantDate_FOUND - True if the system has the library
# HinnantDate_INCLUDE_DIR - The directory which includes the header # HinnantDate_INCLUDE_DIR - The directory which includes the header
# HinnantDate_ROOT_DIR - The base directory of the library
# #
# and the following imported targets:: # and the following imported targets::
# #
# HinnantDate::Date - The target to use date.h # HinnantDate::Date - The target to use date.h
# #
# You can set HinnantDate_ROOT_DIR as hint to the location of the library.
#
# The target will enable the required C++11 standard in your compiler. You can # The target will enable the required C++11 standard in your compiler. You can
# use any later standard but you have to enable them explicitly. # use any later standard but you have to enable them explicitly.
@ -44,10 +47,16 @@
cmake_minimum_required(VERSION 3.1) cmake_minimum_required(VERSION 3.1)
# ensure cache entry
set(HinnantDate_ROOT_DIR "${HinnantDate_ROOT_DIR}" CACHE PATH "Root directory of Howard Hinnant's date library")
set(HinnantDate_NOT_FOUND_MESSAGE "Could NOT find HinnantDate.
Maybe you need to adjust the search paths or HinnantDate_ROOT_DIR.")
find_file(HinnantDate_INCLUDE_FILE find_file(HinnantDate_INCLUDE_FILE
date.h date.h
HINTS ${HinnantDate_INCLUDE_DIR} HINTS ${HinnantDate_ROOT_DIR}
) )
mark_as_advanced(HinnantDate_INCLUDE_FILE)
if (HinnantDate_INCLUDE_FILE) if (HinnantDate_INCLUDE_FILE)
# Validate that correct file is found # Validate that correct file is found
@ -57,11 +66,15 @@ if (HinnantDate_INCLUDE_FILE)
) )
if("${check_result}" STREQUAL "") if("${check_result}" STREQUAL "")
message(STATUS "FindHinnantDate: Rejecting found '${HinnantDate_INCLUDE_FILE}', it seems to be a name twin.") string(APPEND HinnantDate_NOT_FOUND_MESSAGE "\nRejecting found '${HinnantDate_INCLUDE_FILE}', it seems to be a name twin.")
unset(HinnantDate_INCLUDE_FILE) unset(HinnantDate_INCLUDE_FILE CACHE)
else() else()
# Check succeeded, create target # Check succeeded, create target
get_filename_component(HinnantDate_INCLUDE_DIR "${HinnantDate_INCLUDE_FILE}" DIRECTORY CACHE) get_filename_component(HinnantDate_INCLUDE_DIR "${HinnantDate_INCLUDE_FILE}" DIRECTORY CACHE)
mark_as_advanced(HinnantDate_INCLUDE_DIR)
set(HinnantDate_ROOT_DIR "${HinnantDate_INCLUDE_DIR}")
unset(HinnantDate_NOT_FOUND_MESSAGE)
if(NOT TARGET HinnantDate::Date) if(NOT TARGET HinnantDate::Date)
add_library(HinnantDate::Date INTERFACE IMPORTED) add_library(HinnantDate::Date INTERFACE IMPORTED)
set_target_properties(HinnantDate::Date PROPERTIES set_target_properties(HinnantDate::Date PROPERTIES
@ -78,6 +91,6 @@ endif()
include(FindPackageHandleStandardArgs) include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(HinnantDate find_package_handle_standard_args(HinnantDate
REQUIRED_VARS REQUIRED_VARS HinnantDate_ROOT_DIR HinnantDate_INCLUDE_DIR
HinnantDate_INCLUDE_DIR FAIL_MESSAGE ${HinnantDate_NOT_FOUND_MESSAGE}
) )