Am Tue, 5 May 2020 09:15:50 +0200 schrieb Kornel Benko <kor...@lyx.org>:
> Am Tue, 5 May 2020 08:34:48 +0200
> schrieb Yu Jin <technikma...@gmail.com>:
>
> > > Eugene, could you please test the patch?
> > > Hmm, patch does not work for me, I get these errors:
>
> Thanks Eugene. Please try the next patch.
> If it also does not work, we have to decide on the msvc version
> what to do.
>
> Could you also check the msvc-version (somewhere in the CMakeLists.txt)
>
> message(STATUS "MSVC_VERSION = ${MSVC_VERSION}")
>
> Kornel
Forgot to attach.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2a123e7c34..a59faf89c8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -655,11 +655,16 @@ if(LYX_SHARED_LIBRARIES)
set(library_type SHARED)
else()
set(library_type STATIC)
endif()
-if(NOT MSVC)
+if(MSVC)
+ if (CXX11_FLAG MATCHES "\\+\\+(14|17|20)")
+ set(CMAKE_CXX_STANDARD ${CMAKE_MATCH_1})
+ message(STATUS "CMAKE_CXX_STANDARD set to ${CMAKE_CXX_STANDARD}")
+ endif()
+else()
if(NOT LYX_QUIET)
set(CMAKE_VERBOSE_MAKEFILE ON)
endif()
set(LYX_CXX_FLAGS "-Wall -Wunused-parameter ${LYX_GCC11_MODE}")
if(LYX_CXX_FLAGS MATCHES "\\+\\+(14|11|98)")
diff --git a/development/cmake/modules/FindCXX11Compiler.cmake b/development/cmake/modules/FindCXX11Compiler.cmake
index 739d267bf0..1470a64bb2 100644
--- a/development/cmake/modules/FindCXX11Compiler.cmake
+++ b/development/cmake/modules/FindCXX11Compiler.cmake
@@ -42,11 +42,15 @@ else()
else()
if (MSVC)
# MSVC does not have a general C++11 flag, one can only switch off
# MS extensions with /Za in general or by extension with /Zc.
# Use an empty flag to ensure that CXX11_STD_REGEX is correctly set.
- set(CXX11_FLAG_CANDIDATES "noflagneeded")
+ set(CXX11_FLAG_CANDIDATES
+ "/std:c++20"
+ "/std:c++17"
+ "/std:c++14"
+ "noflagneeded")
else()
set(CXX11_FLAG_CANDIDATES
"--std=c++14"
"--std=c++11"
"--std=gnu++11"
@@ -111,11 +115,13 @@ int main()
# check c compiler
set(SAFE_CMAKE_REQUIRED_QUIET ${CMAKE_REQUIRED_QUIET})
set(CMAKE_REQUIRED_QUIET ON)
SET(SAFE_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
FOREACH(FLAG ${CXX11_FLAG_CANDIDATES})
- IF(NOT "${FLAG}" STREQUAL "noflagneeded")
+ IF("${FLAG}" STREQUAL "noflagneeded")
+ UNSET(CMAKE_REQUIRED_FLAGS)
+ ELSE()
SET(CMAKE_REQUIRED_FLAGS "${FLAG}")
ENDIF()
UNSET(CXX11_FLAG_DETECTED CACHE)
CHECK_CXX_SOURCE_COMPILES("${CXX11_TEST_SOURCE}" CXX11_FLAG_DETECTED)
IF(CXX11_FLAG_DETECTED)
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