1# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
2# file Copyright.txt or https://cmake.org/licensing for details.
3
4#[=======================================================================[.rst:
5TestForANSIForScope
6-------------------
7
8Check for ANSI for scope support
9
10Check if the compiler restricts the scope of variables declared in a
11for-init-statement to the loop body.
12
13::
14
15  CMAKE_NO_ANSI_FOR_SCOPE - holds result
16#]=======================================================================]
17
18if(NOT DEFINED CMAKE_ANSI_FOR_SCOPE)
19  message(CHECK_START "Check for ANSI scope")
20  try_compile(CMAKE_ANSI_FOR_SCOPE  ${CMAKE_BINARY_DIR}
21    ${CMAKE_ROOT}/Modules/TestForAnsiForScope.cxx
22    OUTPUT_VARIABLE OUTPUT)
23  if (CMAKE_ANSI_FOR_SCOPE)
24    message(CHECK_PASS "found")
25    set (CMAKE_NO_ANSI_FOR_SCOPE 0 CACHE INTERNAL
26      "Does the compiler support ansi for scope.")
27    file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
28      "Determining if the CXX compiler understands ansi for scopes passed with "
29      "the following output:\n${OUTPUT}\n\n")
30  else ()
31    message(CHECK_FAIL "not found")
32    set (CMAKE_NO_ANSI_FOR_SCOPE 1 CACHE INTERNAL
33      "Does the compiler support ansi for scope.")
34    file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
35      "Determining if the CXX compiler understands ansi for scopes failed with "
36      "the following output:\n${OUTPUT}\n\n")
37  endif ()
38endif()
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