FindBoost: Simplify search in lists

Instead of `list(FIND...)` and then checking result for `-1`
(found/not-found), nowadays `if` command has the `IN_LIST` test for
that.

This change was originally made by commit v3.9.0-rc1~41^2 (FindBoost:
Simplify search in lists, 2017-04-23) but then had to be reverted by
commit v3.9.2~3^2 (FindBoost: Revert "Simplify search in lists.",
2017-09-05) due to problems related to using `find_dependency`.  Those
problems were addressed by commit 3080a0a611 (FindBoost: Improve
behavior when thread dependency is missing, 2017-09-15), so now we can
restore the original change.

Issue: #17252
This commit is contained in:
Alex Turbov 2017-04-23 21:30:31 +07:00 committed by Brad King
parent a1cdf537ff
commit a929dd166e

View File

@ -214,6 +214,10 @@
#
# Set Boost_NO_BOOST_CMAKE to ON to disable the search for boost-cmake.
# Save project's policies
cmake_policy(PUSH)
cmake_policy(SET CMP0057 NEW) # if IN_LIST
#-------------------------------------------------------------------------------
# Before we go searching, check whether boost-cmake is available, unless the
# user specifically asked NOT to search for boost-cmake.
@ -905,9 +909,7 @@ function(_Boost_MISSING_DEPENDENCIES componentvar extravar)
set(_Boost_${uppercomponent}_DEPENDENCIES ${_Boost_${uppercomponent}_DEPENDENCIES} PARENT_SCOPE)
set(_Boost_IMPORTED_TARGETS ${_Boost_IMPORTED_TARGETS} PARENT_SCOPE)
foreach(componentdep ${_Boost_${uppercomponent}_DEPENDENCIES})
list(FIND _boost_processed_components "${componentdep}" _boost_component_found)
list(FIND _boost_new_components "${componentdep}" _boost_component_new)
if (_boost_component_found EQUAL -1 AND _boost_component_new EQUAL -1)
if (NOT ("${componentdep}" IN_LIST _boost_processed_components OR "${componentdep}" IN_LIST _boost_new_components))
list(APPEND _boost_new_components ${componentdep})
endif()
endforeach()
@ -1541,8 +1543,7 @@ endif()
_Boost_MISSING_DEPENDENCIES(Boost_FIND_COMPONENTS _Boost_EXTRA_FIND_COMPONENTS)
# If thread is required, get the thread libs as a dependency
list(FIND Boost_FIND_COMPONENTS thread _Boost_THREAD_DEPENDENCY_LIBS)
if(NOT _Boost_THREAD_DEPENDENCY_LIBS EQUAL -1)
if("thread" IN_LIST Boost_FIND_COMPONENTS)
if(Boost_FIND_QUIETLY)
set(_Boost_find_quiet QUIET)
else()
@ -1977,3 +1978,6 @@ list(REMOVE_DUPLICATES _Boost_COMPONENTS_SEARCHED)
list(SORT _Boost_COMPONENTS_SEARCHED)
set(_Boost_COMPONENTS_SEARCHED "${_Boost_COMPONENTS_SEARCHED}"
CACHE INTERNAL "Components requested for this build tree.")
# Restore project's policies
cmake_policy(POP)