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Clang: Record Clang 16.0 C++ modules flags only for GNU-like front-end

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The settings added by commit 3fe8e33f27 (Clang: Record Clang 16.0 flags
for our experimental C++ modules support, 2023-03-03, v3.26.0-rc6~6^2)
work only for the GNU-like `clang++` front-end, and not for the
MSVC-like `clang-cl` on Windows.

Also quote the path to `clang-scan-deps` to support spaces in its path.

Issue: #24611
This commit is contained in:
Brad King
2023-03-16 16:40:17 -04:00
parent 6013227230
commit ffd8537acf
1 changed files with 15 additions and 13 deletions
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4
Modules/Compiler/Clang-CXX.cmake
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@@ -31,8 +31,9 @@ if("x${CMAKE_CXX_COMPILER_FRONTEND_VARIANT}" STREQUAL "xMSVC")
endif()
if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 16.0)
if("x${CMAKE_CXX_COMPILER_FRONTEND_VARIANT}" STREQUAL "xGNU")
string(CONCAT CMAKE_EXPERIMENTAL_CXX_SCANDEP_SOURCE
"${CMAKE_CXX_COMPILER_CLANG_SCAN_DEPS}"
"\"${CMAKE_CXX_COMPILER_CLANG_SCAN_DEPS}\""
" -format=p1689"
" --"
" <CMAKE_CXX_COMPILER> <DEFINES> <INCLUDES> <FLAGS>"
@@ -43,3 +44,4 @@ if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 16.0)
set(CMAKE_EXPERIMENTAL_CXX_MODULE_MAP_FORMAT "clang")
set(CMAKE_EXPERIMENTAL_CXX_MODULE_MAP_FLAG "@<MODULE_MAP_FILE>")
endif()
endif()