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| author | Brad King <brad.king@kitware.com> | 2020-11-19 16:12:01 -0500 |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2020-12-02 11:39:11 -0500 |
| commit | 48aac247e922409b4dfe7189521661df4b0583d1 (patch) | |
| tree | 301bf76353bb9a6c00293163358b272f1b50d317 /Modules/Compiler/Intel-CXX.cmake | |
| parent | 2e67a75acdbdec24a4e14b2550b846f3ca916de0 (diff) | |
| download | cmake-48aac247e922409b4dfe7189521661df4b0583d1.tar.gz | |
Compile with explicit language flag when source LANGUAGE property is set
This change was originally made by commit 74b1c9fc8e (Explicitly specify
language flag when source LANGUAGE property is set, 2020-06-01,
v3.19.0-rc1~722^2), but it was reverted by commit 30aa715fac (Revert
"specify language flag when source LANGUAGE property is set",
2020-11-19) to restore compatibility with pre-3.19 behavior.
Implement the change again, but add policy CMP0119 to make this change
while preserving compatibility with existing projects.
Note that the `Compiler/{Clang,Intel,MSVC}-CXX` modules do not need to
specify `-TP` for their MSVC-like variants because we already use the
flag in `CMAKE_CXX_COMPILE_OBJECT`. Similarly for `Compiler/XL-CXX`
and `Platform/Windows-Embarcadero`.
Note also that this does not seem possible to implement for XL C.
Even with `-qsourcetype=c`, `xlc` complains about an unknown suffix:
`1501-218 (W) file /.../AltExtC.zzz contains an incorrect file suffix`.
It returns non-zero even with `-qsuppress=1501-218`.
Co-Author: Robert Maynard <robert.maynard@kitware.com>
Fixes: #14516, #20716
Diffstat (limited to 'Modules/Compiler/Intel-CXX.cmake')
| -rw-r--r-- | Modules/Compiler/Intel-CXX.cmake | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Modules/Compiler/Intel-CXX.cmake b/Modules/Compiler/Intel-CXX.cmake index dd9681e192..37f339a77d 100644 --- a/Modules/Compiler/Intel-CXX.cmake +++ b/Modules/Compiler/Intel-CXX.cmake @@ -48,6 +48,8 @@ if("x${CMAKE_CXX_SIMULATE_ID}" STREQUAL "xMSVC") else() + set(CMAKE_CXX_COMPILE_OPTIONS_EXPLICIT_LANGUAGE -x c++) + if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.0.0) set(CMAKE_CXX20_STANDARD_COMPILE_OPTION "-std=c++20") set(CMAKE_CXX20_EXTENSION_COMPILE_OPTION "-std=gnu++20") |